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Search results “Output ripple and noise measurement db”
#136: What is a dB, dBm, dBu, dBc, etc. on a Spectrum Analyzer?
 
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This tutorial video gives the basics of the typical amplitude units used on a spectrum analyzer. It gives a basic description of the electronic definition of the decibel (dB), some of the properties of the dB, why it is used. It describes that the dB is a relative measurement. These relative measurements can be expressed as absolute measurements when a known reference is used/implied. This is where the terms dBm, dBu, dBmv, etc. come from. Finally, the term dBc is described. Each of the descriptions is followed with practical examples and demonstrations on an oscilloscope and spectrum analyzer. Notes from the video are here: http://www.qsl.net/w/w2aew//youtube/What_is_dBm_dB_dBc_etc.pdf
Views: 156712 w2aew
EEVBlog #1116 - How to Remove Power Supply Ripple
 
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Circuit building block time. The capacitance multiplier and how it gives almost negligible power supply ripple compared to a voltage regulator. Whiteboard theory and then some bench demonstrations and experiments. Plus a twist at the end that proves that the "Capacitance multiplier" is perhaps one of the most mis-named circuits of all time. Forum: http://www.eevblog.com/forum/blog/eevblog-1116-the-capacitance-multiplier/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog Stuff I recommend: https://kit.com/EEVblog/ Donate With Bitcoin & Other Crypto Currencies! https://www.eevblog.com/crypto-currency/ T-Shirts: http://teespring.com/stores/eevblog Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3 💗 Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3
Views: 71254 EEVblog
Measure Period, Frequency, & Amplitude on Oscilloscope | Scopes 3 of 5 | Doc Physics
 
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I'll measure the period, frequency, and voltage amplitude of the signal put out by a vintage NES power supply (wall wart transformer). We'll even mention RMS voltage! And Cody is back!
Views: 48630 Doc Schuster
Calculating RMS Noise to Peak-to-Peak Noise
 
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Analog Devices' Matt Duff describes how to convert RMS noise into Peak-to-Peak noise. Distributed by Tubemogul.
Views: 60009 Analog Devices, Inc.
EEVblog #49 - Decibels (dB's) for Engineers - A Tutorial
 
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Are you a pessimist or an optimist? Dave explains dB's and how they are useful for us engineering types.
Views: 147054 EEVblog
Frequency Response Analysis using Oscilloscopes
 
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Bode gain & phase, power supply control loop response Get the Power Supply Testing Toolkit ► http://bit.ly/2bRwmcW Click to subscribe! ► http://bit.ly/Scopes_Sub Application note: http://bit.ly/ScopesBode Thanks for watching the Keysight Oscilloscopes Webcast Series! Learn more about using digital storage oscilloscopes: http://oscilloscopelearningcenter.com Check out our blog: http://keysightoscilloscopeblog.com Like our Facebook page: https://www.facebook.com/keysightbench/ More about Keysight scopes: http://www.keysight.com/find/scopes Agenda: Power Supply Design Trends 2:08 Output Ripple 3:11 (output noise, PARD, Power Integrity) -common probes used 4:10 -Probing techniques & example measurements 6:39 --10:1 passive probe 7:56 --10:1 passive probe with probe socket 9:06 -Using FFT analysis to measure ripple 10:31 --10:1 vs 1:1 probe 13:29 --Use a Power Rail Probe (N7020A) 14:10 Power Supply Rejection Ration 18:58 (Power Supply Ripple Rejection) -Physical Setup 21:21 -Setting up a PSRR measurement 22:47 -Measuring PSRR 24:40 -Oscilloscope vs Network Analyzer (VNA) 26:08 Control Loop response measurements 27:02 -Power supply transient response analysis 28:02 -DC-DC converter block diagram 28:19 -Typical Loop Gain Measurement 29:40 -Control loop response measurement configuration 31:42 -Control loop response physical test setup 34:00 -Setting up a control loop response measurement on the oscilloscope 34:46 -Control Loop Response (Bode plot) - Gain plot 36:17 -Control Loop Response (Bode plot) - Phase plot 37:47 -Manual phase margin measurement 38:52 -Oscilloscope vs Network Analyzer (VNA) 39:36 Oscilloscope vs Network Analyzer overview 40:30 Review & summary 44:31 Keysight Oscilloscope Portfolio 45:18 Recommended probes for power supply measurements 47:05 Additional Technical Resources 49:13 Live Q&A 50:28 2-Minute Guru playlist: https://www.youtube.com/playlist?list=PLzHyxysSubUkc5nurngzgkd2ZxJsHdJAb Download free 30-day trials of Keysight's design & test software at http://www.keysight.com/find/free_trials
Views: 3516 Keysight Labs
switching power supply  Noise and Birdie Gone !! MeanWell supply
 
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Help, need 14.5 to 15 volts on these
DC Voltage Measurement using Oscilloscope
 
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When DMM (Digital Multi-Meter) or voltmeter is not available, the oscilloscope can be used for measuring DC voltage. Even after calibration and warm-up of the device, there may be a DC offset. Instead of using the builtin measurements, the cursor may be more accurate for measurement. Note for limits of the device which may cause damage of the oscilloscope and injury, so work within the specs of the device.
Views: 25493 ShellWave
Calculating Spectral Noise Density to RMS Noise
 
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http://www/analog.com NOTE: the equation in the video should be: 40 nV/rt(Hz) * sqrt(10k * 1.57) = 5 uVrms. Analog Devices' Matt Duff describes how to convert spectral noise density (nanoVolts per root Hertz) into RMS noise (microVolts rms).
Views: 46517 Analog Devices, Inc.
Measuring a buck converter's loop gain and phase using a PicoScope
 
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Roland van Roy, Senior FAE Manager, Richtek, shows how to measure loop gain and phase in a buck converter using a PicoScope 5000 Series PC oscilloscope. The gain and phase of the feedback loop need to be well controlled to optimize speed and ensure stability of the converter. Roland also explains how to make the signal injection transformer needed for the measurement. The additional software shown, a Frequency Response Analyzer utility for PicoScopes, is available free of charge here: https://bitbucket.org/hexamer/fra4picoscope/
Views: 1299 Pico Technology
LTspice IV:  Noise Simulations
 
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Tyler Hutchison, Applications Engineer LTspice IV (http://www.linear.com/ltspice) can perform frequency domain noise analysis which takes into account shot, thermal and flicker (1/f) noise. The resulting noise density (in units of volts per square root hertz) can then be plotted to aid in circuit analysis and understanding. This video covers how to setup a .noise simulation in LTspice to view both input and output referred voltage noise and discusses a couple of tricks to learn more about noise contributors.
Views: 24555 LinearTechnology
#67: Basics of Common Emitter Amplifier Gain and Frequency Response with Measurements
 
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This video shows a simple common emitter amplifier based on a 2N2222 NPN transistor, and reviews how to calculate the gain and frequency response of the circuit. The video is NOT intended to take a deep dive into the design considerations for the amplifier (The Signal Path Blog site already did a fine video on that). I discuss the basic equations for calculating the the in-band gain, as well as the low- and high- corner frequencies of the frequency response. All of these parameters - DC bias levels, bias currents, in-band gain and frequency response are then measured and shown. Notes in the video can be found here: http://www.qsl.net/w/w2aew//youtube/Freq_response_common_emitter_amplifier.pdf
Views: 116993 w2aew
How to use FFT to measure power supply voltage ripple
 
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Demonstrates how to use an oscilloscope to measure power supply voltage ripple with several methods including FFT. #1: Siglent SDS1102CML+ https://amzn.to/2JAyVQv #2: Hantek DSO5102P https://amzn.to/2JBU9gK #3: Hantek DSO5072P https://amzn.to/2JBSzLQ #4: Rigol DS1102E https://amzn.to/2F0B0q1 #5: Rigol DS1052E https://amzn.to/2SIjSs3 #6: Siglent SDS1052DL+ https://amzn.to/2Dl9C4C #7: Owon SDS5032E-V https://amzn.to/2yNB4UQ #8: Uni-T UTD2052CEX https://amzn.to/2SKKj0q #9: UTD2025CL https://amzn.to/2D3sBiW #10 GW Instek GDS-1102-U https://amzn.to/2SFnET0
Views: 1 Kiss Analog
Talk 1: Thermal Noise Limits in Radio Measurements
 
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This talk explains the most fundamental limits on all radio receivers and measurement systems. Have you ever wondered how a spectrum analyzer works, how to properly adjust all of the analyzer's parameters, or why a stair-step pattern initially appears on a spectrum analyzer screen when you turn it on? Do you know how to precisely calculate the analyzer's sensitivity in your head, merely by glancing at the screen display without any signal present? Are you uncertain about how much gain, and how low a noise figure, you ought to specify when you are ordering a low-noise amplifier (LNA) for a radio receiver? Do you want to know the difference between noise figure and noise factor? Do you wonder how to diagnose and solve radio interference problems? If you have questions about how to make good radio spectrum measurements or how to diagnose interference problems, you will find the answers in the NTIA Seminar Series on Spectrum Measurement Theory and Techniques. In this series of talks, an NTIA engineer at the Institute for Telecommunication Sciences (ITS) laboratory in Boulder, CO, discusses the fundamentals of radio spectrum measurements. The speaker, Frank Sanders, who has nearly thirty years of experience in this field, recognizes that even for many engineers who routinely use spectrum analyzers, the fundamentals of how they work and how to use them may be a bit murky; even in university lab classes the instructors do not always understand these machines very well themselves. Most of the talks, which are 80-100 minutes long, are divided into two parts. In the first portion of each video, Sanders explores a particular aspect of radio spectrum measurement technique or theory with a whiteboard lecture. In the second part, the lessons of the whiteboard discussion are implemented with actual measurement hardware and radio signals. A few of the talks, which for example involve large numbers of photographs of radar systems, are videos of his Microsoft Powerpoint presentations. In this series, Sanders explains spectrum analyzer functionality in terms of convolution bandwidth and shows how, when convolution is understood along with the mechanics of analyzer design, spectrum analyzer operations and outputs become easy to understand and use. Other topics include (1) what you need to know to use spectrum analyzers to examine all types of radio signals, including mobile radios, radars, and digital data links; (2) the use of low noise amplifiers and how to specify the right gain and noise figure for your receiver and measurement applications; (3) how radar systems work, and how to understand and interpret the signals that you see coming from radars; (4) the ways that radio interference can occur; (5) a methodical approach for diagnosing and solving radio interference problems; (6) the math needed to convert spectrum analyzer measurements into field strengths of radio signals; and (7) the proper conversions for radiation hazard calculations.
Views: 82 NTIAGov
#135: Measure Capacitor ESR with an Oscilloscope and Function Generator
 
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This video discusses how to measure the ESR (equivalent series resistance) of a capacitor using an oscilloscope and function generator. All of the capacitors tested in this video were 220uF electrolytic caps. In reality, the resistance in the plates of a dried out electrolytic capacitor can't be modeled as a simple series resistor, but for the purposes of identifying good from bad, this simplification works fine. In the video, I show the ESR meter that I made in 2006. The video for that is here: http://www.youtube.com/watch?v=bmYAgat-sOQ A copy of the video notes can be found here: http://www.qsl.net/w/w2aew//youtube/Measuring_capacitor_ESR.pdf
Views: 145306 w2aew
Pink Noise -12db RMS
 
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pink noise -12db RMS
Views: 107 Gordon Gidluck
NI Multisim: AC Analysis frequency response
 
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Set up an AC Analysis to plot the frequency response (both magnitude and phase) of a circuit.
Views: 97883 NTS
Power Supply Rejection Ratio (PSRR) Measurements using an Oscilloscope
 
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Learn how to perform Power Supply Rejection Ratio measurements using an oscilloscope to test your power supply's ability to reject various components of frequency on the input of DC-to-DC converters. Learn more! ► http://www.keysight.com/find/scopes-power Click to subscribe! ► http://bit.ly/Scopes_Sub The mixed signal oscilloscope we used: https://keysight.com/find/3000T Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com Check out our blog: http://keysightoscilloscopeblog.com Like our Facebook page: https://www.facebook.com/keysightbench/ Download free 30-day trials of Keysight's design & test software at http://www.keysight.com/find/free_trials
Views: 2362 Keysight Labs
EEVblog #486 - Does Current Flow Through A Capacitor?
 
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Dave proves he has no fear by opening this can of electronic worms by posing the question - "Does Current Flow Through A Capacitor?" The answer may surprise you, or drive you into a physics induced rage... Turns out you can measure the displacement current: http://personal.rhul.ac.uk/uhap/027/PH2420/PH2420_files/displacement.pdf NOTE: before commenting, please watch and understand that there are TWO types of currents. Vent your rage here: http://www.eevblog.com/forum/blog/eevblog-486-does-current-flow-through-a-capacitor/ Thanks to KedasProbe for pointing out this doco video on Maxwell & the Displacement current!: http://www.youtube.com/watch?v=VdoL8IOwJw0 EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 336383 EEVblog
Power Supply Control Loop Response Measurements using an Oscilloscope
 
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Learn how to perform control loop response measurements (Bode gain and phase plots) to test the stability of closed-loop feedback networks of switch mode power supplies. Learn more! ► http://www.keysight.com/find/scopes-power Click to subscribe! ► http://bit.ly/Scopes_Sub The mixed signal oscilloscope we used: https://keysight.com/find/3000T Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com Check out our blog: http://keysightoscilloscopeblog.com Like our Facebook page: https://www.facebook.com/keysightbench/ Download free 30-day trials of Keysight's design & test software at http://www.keysight.com/find/free_trials
Views: 4251 Keysight Labs
EEVblog #396 - Bode Plotting on Your Osciloscope
 
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Dave shows you a neat trick on how to get a real time frequency response bode plot on your oscilloscope using your function generator. Useful for filter or system response characterisation. Forum Topic: http://www.eevblog.com/forum/blog/eevblog-396-bode-plotting-on-your-osciloscope/ Spectrum Analyser Video: http://www.youtube.com/watch?v=Wg3PNgGW_M4 EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 93677 EEVblog
What is PSOPHOMETRIC WEIGHTING? What does PSOPHOMETRIC WEIGHTING mean?
 
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What is PSOPHOMETRIC WEIGHTING? What does PSOPHOMETRIC WEIGHTING mean? PSOPHOMETRIC WEIGHTING meaning - PSOPHOMETRIC WEIGHTING definition - PSOPHOMETRIC WEIGHTING explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Psophometric weighting refers to any weighting curve used in the measurement of noise. In the field of audio engineering it has a more specific meaning, referring to noise weightings used especially in measuring noise on telecommunications circuits. Key standards are ITU-T O.41 and C-message weighting. A major use of noise weighting is in the measurement of residual noise in audio equipment, usually present as hiss or hum in quiet moments of programme material. The purpose of weighting here is to emphasise the parts of the audible spectrum that ears perceive most readily, and attenuate the parts that contribute less to perception of loudness, in order to get a measured figure that correlates well with subjective effect.
Views: 184 The Audiopedia
Using the Fluke 190-502 Scopemeter to measure electrical noise
 
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The Fluke 190-502 Scopemeter is a battery-powered, handheld oscilloscope with lots of functionality in a small package. In this video we look at its ability to detect electrical noise in the power supply.
Views: 28990 Design World
Measuring and Visualizing High Crest Factor Power Signals with an IntegraVision Power Analyzer
 
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Measuring and Visualizing High Crest Factor Power Signals with an IntegraVision Power Analyzer http://www.keysight.com/find/Integravision Measure high crest factor signals requires an instrument with a high dynamic range. The PA2201A Power Analyzer provides 16 bit dynamic range for greater flexibility and accuracy. In this video, two signals with high crest factors are measured. The first signal simulates a switching power supply with a crest factor of almost 3:1. The second signal is of a full wave bridge rectifier with a high signal to noise ratio. IntegraVision power analyzer is an intuitive combination of accurate power measurements and touch-driven oscilloscope visualization. Within a single instrument, it delivers the dynamic views you need to see, measure and prove the performance of your design. Get your design and validation work done quickly, accurately and confidently with IntegraVision’s ability to address multiple test scenarios with the flexibility of wide-ranging, isolated inputs. Visualize transients, in-rush currents and state changes with a high-speed digitizer that captures voltage, current and power in real time. Analyze power losses in the time and frequency domains using full Nyquist rate-based computations.
EEVblog #471 - Overload Detector Circuit Design
 
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Fundamentals Friday Dave takes you through designing a signal overload detector circuit from scratch and then builds it up on the breadboard. Window comparators, schmitt inverters, capacitor charging, pulse stretching, common mode input range, tongue angle tweaking, it's all here. Forum Topic: http://www.eevblog.com/forum/blog/eevblog-471-overload-detector-circuit-design EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 56758 EEVblog
Texas Instruments ADS127L01 Analog-to-Digital Converter | Digi-Key Daily
 
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Texas Instruments offers its ADS127L01, 24-bit, high-speed, wide-bandwidth analog-to-digital converter with data rates up to 512 kSPS, analog supply of 2.7 V to 3.6 V, and digital supply of 1.7 V to 3.6 V. This device offers a unique combination of excellent DC accuracy and outstanding AC performance . The ADS127L01 provides multiple wideband filters with less than ±0.00004 dB of ripple. The ADS127L01 provides high-precision industrial measurement with excellent DC and AC specifications over a temperature range of -40°C to 125°C. A programmable SPI™ or frame-sync serial interface provides convenient interfacing across isolation barriers to microcontrollers or digital signal processors. http://www.digikey.com/en/product-highlight/t/texas-instruments/ads127l01-analog-to-digital-converter
Views: 270 Digi-Key
EEVblog #820 - Mesh & Nodal Circuit Analysis Tutorial
 
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Dave explains the fundamental DC circuit theorems of Mesh Analysis, Nodal Analysis, and the Superposition Theorem, and how they can be used to analyse circuits using Kirchhoff's Voltage and Current Laws we learned in the previous video here: https://www.youtube.com/watch?v=WBfAEeEzDlg The same circuit is solved using the 3 different methods. Will we get the same answer from each technique? Forum: http://www.eevblog.com/forum/blog/eevblog-820-mesh-nodal-circuit-analysis-tutorial/ EEVblog Main Web Site: http://www.eevblog.com The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2 Support the EEVblog through Patreon! http://www.patreon.com/eevblog EEVblog Amazon Store (Dave gets a cut): http://astore.amazon.com/eevblogstore-20 T-Shirts: http://teespring.com/stores/eevblog Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/ 💗 Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3
Views: 108363 EEVblog
CROWD MACHINE - How Crowd Machine Works? - ICO Review
 
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CROWD MACHINE - How Crowd Machine Works? - ICO Review ★ GO TO ICO WEBSITE ➤ https://www.crowdmachine.com/ ★ TRADE CURRENCIES ➤ http://coinbyte.net/trade ★ CONTACT FOR ADVERTISING ➤ [email protected] ★ DONATE ➤ BTC - 16SjFpNk6P2wxvcNjAHnwmMSLZc8aGKsyC ➤ ETC - 0x0b034ac2447b908e6eefb7d4f9b77f6b8e72ea8b Denholm's successor dislikes the IT department and plans to crowd machine fireplace them. Through the funeral, Roy notices his Dying time is coming and reacts violently when his pimped-up mobile phone goes off at 3pm. Denholm's son Douglas (Matt Berry) storms the funeral wherever it is actually crowd machine blockchain introduced he might be taking over Reynholm Industries crowd machine ico review. Browse the Disclaimer: Buying and selling can be a very risky activity. Do talk to your financial crowd machine advisor before making any conclusions. CoinGecko is just not responsible for crowd machine ico review any buying and selling conclusions. Jen persuades Roy and Moss to affix the social crowd machine networking site Friendface.[b] After reuniting with a successful classmate and needing to make tall tales about her have crowd machine ico review progress, Jen needs to attend her crowd machine highschool reunion wherever she asks Roy after which you can Moss to pretend to get her spouse crowd machine. This attribute is beneficial to learn whether crowd machine blockchain or not the counterparty is dependable or not. In the event that the of any type of dispute crowd machine blockchain in between two functions, then the people will have to make crowd machine ico review clear it by supplying proof for crowd machine verification through the Oracle system. Other than venture supervisors and directors, a solid emphasis is set within the builders and crowd machine programmers responsible for the technological aspect with crowd machine blockchain the challenge, which means they're going to most crowd machine token sale probably produce whatever they promise. Law enforcement in Pittsburgh confirmed off the most up-to-date in crowd Command Thursday as they reportedly crowd machine token sale utilized "sound cannons" to blast crowd machine the ears of protesters close to the Group of twenty Conference of globe economic leaders. Metropolis officials mentioned it had been the first time these kinds of audio blasters, often named sound crowd machine weapons, ended up made use of publicly."There was an assortment of seem amplifiers employed in the course of the demonstration," Lavonnie Bickerstaff on the Pittsburgh Bureau of Police, advised LiveScience, including, "The Poconos police brought the long-range acoustic crowd machine blockchain device with them, but I do not know crowd machine token sale no matter if it had been employed." The extended assortment acoustic system (LRAD) is created for crowd machine prolonged-selection conversation and "unmistakable warning," based on the American Technologies Corporation, which crowd machine token sale develops the devices. "It is a targeted output. What distinguishes it from other crowd machine communications resources available is its power to be heard Obviously and intelligibly at a distance, compared with bullhorns." Its shrill warning tones can be heard at least one,600 feet (500 meters) absent and depending upon the design of LRAD it may blast a optimum seem of a hundred forty five to 151 decibels — equivalent into a gunshot — in just a three-foot (1 meter) range, In keeping with American Technology. But there's a quantity knob, so its output is usually fewer than max DApp advancement has the possible to noticeably get much easier and more rapidly because of the Crowd Machine System and unlike several ICOs, Crowd Machine now has consumers and an item raring to alter the cloud computing landscape. The hunger for economic supremacy has led to varied exploitation steps against consumers and traders in various sectors of the financial system. And with around-dependence... ICO Scores also plays an important job as traders will get an outline and will be able to understand about the top ICOs to invest. Senior Affiliate of Sutton Stone specializing in financial advisory, fiscal modeling and software of praxeological methodology to crypto-financial methods. Crowd Machine is revolutionizing the blockchain and decentralized applications sector. By unifying the whole world’s surplus unit processor capability, Crowd Machine has developed a extremely capable decentralized Cloud. Embedded in just this decentralized cloud is usually a innovative software package application development engineering which enables developers and non-builders alike to develop blockchain and decentralized apps at up to 45x the pace of common advancement ways.
Views: 11169 Crypto Investing
Hack Audio: Peak Amplitude
 
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The peak amplitude (or peak magnitude) is a measurement of the maximum level of a signal. This video demonstrates the process to analyze a signal by taking the magnitude (absolute value) and the max. Check out http://www.hackaudio.com/ for more information.
Views: 92 Hack Audio
Measuring the Power Efficiency of Subthreshold FPGAs
 
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Measuring the Power Efficiency of Subthreshold FPGAs for Implementing Portable Biomedial Applications Power is a significant design constraint for implementing efficient portable biomedical applications. Operating transistors in the subthreshold region can significantly reduce power consumption; it, however, also reduces performance. While this performance reduction can be significant in many applications, the low frequency nature of biosignals makes subthreshold region a good candidate for implementing biomedical applications. In this work, we investigate the feasibility of designing a specialized FPGA for implementing portable biomedical applications. In particular, we perform a case study on the performance of the Burg algorithm, a widely used biomedical signal processing algorithm, to deter- mine the minimum operating frequency required for the processing of biosignals in real time. Based on the requirement, the trade-off between power consumption and performance is measured for FPGA routing resources operating in the subthreshold region. It is found that operating FPGA routing resources in the subthreshold region can significantly reduce power consumption while allowing the Burg algorithm to operate in real time. For the 32 nm Predictive Technology Model studied in this work, we observed a power reduction of 197.7 times (which corresponds to a power-delay-product reduction of 10.78 times) for operating FPGA routing tracks in the subthreshold region under a supply voltage of 0.4 V. Under this voltage, the FPGA can operate at 2.0 MHz while allowing signals to propagate unregistered through 45 routing tracks. Furthermore, the 2.0 MHz operating frequency meets the realtime requirement of the Burg algorithm for processing 20,000 samples per second.
Views: 315 EECG Toronto
How to Select the Right Probe Bandwidth - Probing Pitfalls
 
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What bandwidth oscilloscope probe do you need? 1-Click Subscribe! ► http://bit.ly/KLabs_sub ◄ Learn more about probing: ► https://bit.ly/2pIheVn ◄ If you don’t have enough bandwidth in your probe, you won’t be able to see your true signal. Therefore, any of the measurements you make could be false, leading to errors and poor engineering decisions. In this episode of Probing Pitfalls, Erin explains the dangers of choosing a probe with the wrong bandwidth and walks you through what bandwidth is, how much you need, and the consequences of choosing the wrong bandwidth. She explains: • How the 3dB point determines bandwidth specs • How rise time of your signal determines how much bandwidth you need • Why harmonics determine the bandwidth needed for square waves • Why system bandwidth is the ultimate restriction on your test bandwidth Stay tuned for future Probing Pitfalls episodes covering common probing mistakes and how to avoid them. You’ll be on your way to making more accurate measurements. Ask Erin questions on Instagram: @keysightoscilloscopes Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com Check out the EEs Talk Tech electrical engineering podcast: https://eestalktech.com More about Keysight oscilloscopes: http://bit.ly/SCOPES Check out our blog: http://bit.ly/ScopesBlog Follow us on Twitter: @Keysight_Daniel https://twitter.com/Keysight_Daniel Like our Facebook page: https://www.facebook.com/keysightbench/ Probing Pitfalls is hosted by Erin East and Melissa Spencer. The video series covers common oscilloscope probe pitfalls, the impact they have on your designs and measurements, and how avoiding them can improve your test results. You’ll learn proper probing practices that will save you time in validating and debugging your designs, plus improve your overall knowledge and skill in the test lab. #oscilloscope #oscilloscopes #bandwidth #bandwidthproblems #probing #oscilloscopeprobeing #probe #oscilloscopeprobes
Views: 2644 Keysight Labs
Hantek dso5072p Power Supply Fix
 
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So I came across this oscilloscope at my local charity shop for the grand total of £20. As you may have guessed from the price it does not work. I suspected that it may be a power supply issue but could not be 100% until I opened it up. As you can see in the video it has had very little use but it turned out to be a very easy fix.
Views: 16595 andrew mcneil
Alinco DM330MVE Noise shift test
 
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Teste da fonte de alimentação Alinco DM-330MVE o noise shift é eficaz mas para quem está habituado a fontes convencionais acham isto péssimo...
Views: 2553 Rui Valente
Measuring Global Negative Feed Back (NFB) In The Dynaco Mark III
 
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Documenting the amount of global NFB in a well respected vacuum tube amplifier.
Views: 1527 ElPaso TubeAmps
Frequency meter with reeds
 
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230 Volts 50 Hertz frequency meter in service. Frequency is displayed by means of oscillating reeds.
Views: 2926 RODALCO2007
Precision IoT Power Consumption Measurements Using a Device Current Waveform Analyzer
 
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The new Keysight CX3300A device current waveform analyzer allows unprecedented speed and precision in making accurate characterization and measurement of Current and power consumption in high speed battery operated devices. With the look and feel of an oscilloscope and powerful analysis software built-in, the CX3300A allows designers of both hardware and firmware in IoT devices to precisely correlate the power consumption effects of circuit or firmware design changes right down to the nano-coulomb. This video demonstrates the CX3300A making precision measurements on a wearable fitness band product, measuring the cost of various circuit behaviors. For more information on Keysight’s power consumption test solutions, visit: http://www.keysight.com/find/iot-lowpower
Epcos B84110B Filter
 
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Epcos B84110B FilterWhen you choose which filter to buy, you should take account of key parameters. They include:• the purpose of a system with which a filter will be used (switched power supplies, converters, electric motors or industrial electronic equipment);• the supply voltage type -- either direct or alternate• the mains voltage;• the current absorbed by a end device;• the required noise suppression level; and• The number of phases in the network or in the line.Generally, a single-phase network includes two power lines with or without a grounding circuit. Such network options required double-wire filters.Let me describe V84110-B-A14 filter.This is a double-wire filter for single-phase AC networks with the voltage of 250 Volts, frequency of 50-60 Hz and the current of up to 1.4 A.It contains a compensated current choke and noise suppression X-capacitors that are used to compensate for asymmetric interference that prevails at the frequencies above 1MHz.Key features are as follows:• asymmetric interference suppression level is 40 dB at 100 kHz;• plastic housing;• print board mountingIts prospective applications include:• switch mode power supplies;• TV sets;• Low-power digital systems and industrial electronic equipment.This filter is an autonomous complete unit installed before the receiving device.Note that network filters are subject to special electric safety requirements. To this end, EPS0S filters are produced in strict compliance with the standards adopted by the International Electromechanical Commission (IEC) and are subject to special tests in various national centers, for instance, in Germany, Canada or United States.Filters certified by safety laboratories have respective labels.
Views: 85 ChipDipvideo
Peak and RMS
 
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Video explaining the music production concepts of Peak volume and RMS volume. For more videos like this visit http://www.mxmethod.com
Views: 4320 MrHarryhughes
Understanding Common Mode DMM Specifications
 
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Describes DC and AC common mode specifications (DC CMRR, AC CMR) for Keysight's DMMs and shows how they are calculated. For more information on Keysight Digital and Bench multimeter see: http://www.keysight.com/find/34401a http://www.keysight.com/find/34410a http://www.keysight.com/find/34411a
1932 National SW-58 regenerative receiver restoration
 
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This is the very first peek at this receiver as received. It is a regenerative receiver with tuned RF amplifier, and ganged one-hand tuning. There is an antenna tuning control (left), RF gain control (middle left), the main tuning (middle right), and the regeneration control (right). This allows maximum signal to noise ratio, and a method of reducing the input to the regenerative detector for strong signals, so that it may continue to be operated at the maximum selectivity position of regeneration. Type 58 remote pentodes are used. The first audio stage is an impedance coupled 27 triode, and a transformer coupled class A push-pull power amplifier with 45 triodes follows. UPDATES NOV. 28/16: The output transformer S-11 was swept using a 600 ohm audio generator on half of the primary, and a 5000 ohm secondary resistive load: FLAT (+/- 1 dB) from 10 kHz all the way down to 10 Hz !!! The radio was then powered up: +325V plates, + 52V cathodes, +273V effective plate voltage. 750 ohm cathode bias resistor = 35mA plate current each 45 triode, resting and full power (remember class A). The audio output stage provides 320Vp-p or 2.6 watts of clean audio 1%THD into a 5000 ohm resistive load! (I was expecting 4 watts. The output transformer S-11 has an impedance ratio of 18000 ohms p-p to 6250 ohms, however the d.c. winding resistance of the secondary is 1020 ohms, resulting in 20% power loss internally, and on top of this I suspect the RCA tube handbook allows a 5% distorted waveform to get the 4 watts. Nevertheless, this transformer design tradeoff results in a flat frequency response from 10 kHz down to 10 Hz in my sweep test with or without the d.c. primary current of the tubes!!!) The driver transformer S-51 is almost as good. With a 9000 ohm source resistor and signal generator (simulating the 27 driver tube plate resistance), I measure a response (+/-3dB) from 40 Hz to 8 kHz. However when the radio is powered up, with an input to the 27 grid I notice a severe low frequency fall off of the overall radio: -3 dB 200 Hz, -10 dB 80 Hz. UPDATE: The cathode resistor bypass capacitor (0.5 uF/2000 ohms) is not large enough, so the effective plate resistance of the 27 driver increases above 9000 ohms, and since the unbalanced current carrying driver transformer primary impedance is falling also, severely shunts the audio frequencies below 200 Hz. Perhaps a deliberate hum reducing design? UPDATE: I added another bypass capacitor, 8uF, across the driver cathode resistor. Overall radio response -3dB 7 kHz, -3dB 90Hz, -6dB 50Hz. The unbalanced current in the primary winding must be reducing inductance. Added an 8200 ohm resistor across the primary, penalty is 6dB gain, but improved flattening of the response: -3dB 7.5 kHz, -3dB 50 Hz, -6dB 30Hz. Very good! In fact, with the bass-boosting effect of the regeneration control set for AM operation, this will sound high-fidelity in a good 5000 ohm National speaker. First conclusion: this receiver from 1932 was the earliest equivalent of the later 1935-1950s push-pull 6F6/6V6 shortwave superheterodyne receivers with many more tubes, such as the National NC-100/101, HRO-50/60, NC-183, and Hallicrafters SX-42, SX-28, SX-62. To have that in 1932, just a few years after the best receiver was a UX-201A detector triode and audio headphone amp, was nothing short of revolutionary. The famous James Millen designed this receiver. This is not a toy broadcast receiver, but a serious shortwave instrument with both general coverage and amateur bandspread plug-in coil sets available. If you couldn't work Australia from North America with this set, you couldn't with any other set either. This receiver was the last of the original National regenerative designs, following the SW-4, SW-5 and SW-45 models. Incidentally, the SW-5 was available with push-pull 27 or 45. The choice was based on low current drain of the 27s, resulting in lower ac ripple from the power supply, and the ability to connect headphones there too if one needed super gain without dangerously blasting ones ears off, vs. the 45s increased power and fidelity using flatter transformers for broadcast stations. In practice, the 45s were fine, no added ripple with a good supply and no one in their right mind would connect headphones to a push pull power amp driven by a howling regenerative receiver anyway! The smaller SW-3 omitted the push-pull stage and production continued well into the war years. In my opinion, the SW-58 is the most aesthetically pleasing design. Many ARRL handbook receiver designs in the 1930s were based on this. *** Stay tuned for RF testing! ***
Views: 319 ve3iku
Monte Tut #04 SPECIAL - Peak & RMS demystified
 
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PEAK & RMS demystified, this is a supplement to the previous Tutorial. It continues were we left off explaining these 2 loudness factors in greater detail, more perspicuous examples and a revealed secret about the craft of making loud sounding mixes. subscribe: http://www.youtube.com/subscription_center?add_user=MonteMusicChannel please like and follow: https://www.facebook.com/MonteMusik https://twitter.com/MonteMusik
Views: 1532 MonteMusicChannel
EEVblog #24 - Chopper Operational Amplifiers
 
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A tutorial on the secret world of Chopper (auto-zero) Amplifiers.
Views: 73256 EEVblog
Is it 10 or 20 log to make dBs?? Power VS Voltage
 
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A simple way to remember if you should use 10log(x) or 20log(x) to calculate dBs. Email me on [email protected] www.facebook.com/easytechfutureinfo/ Easytechfutureinfo.com twitter.com/EasyTechFI uk.linkedin.com/in/robertjohnwebber Tell us what else you would like videos on!
Views: 2492 Robert Webber
EEVblog #496 - What Is An FPGA?
 
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What is an FPGA, and how does it compare to a microcontroller? A basic introduction to what Field Programmable Gate Arrays are and how they work, and the advantages and disadvantages. FPGA Stuff in Dave's Amazon store: http://bit.ly/1ayoNiV FPGA Implementation Tutorial: http://www.youtube.com/watch?v=7AFGcAyK7kE Forum: http://www.eevblog.com/forum/blog/eevblog-496-what-is-an-fpga/ EEVblog Main Web Site: http://www.eevblog.com EEVblog Amazon Store: http://astore.amazon.com/eevblogstore-20 Donations: http://www.eevblog.com/donations/ Projects: http://www.eevblog.com/projects/ Electronics Info Wiki: http://www.eevblog.com/wiki/
Views: 435528 EEVblog
re: QEG power measurements: Peak to peak power readings Vs RMS power readings
 
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A common mistake when measuring AC power values is to use meters that are not able to measure the difference in phase (timeing) between the peak of the voltage wave and the peak of the current wave. Even if you have huge voltage and current peaks if they are not at the same time then the ammount of watts you have is very low, or, the total value of the power over a very long waveform can be much lower then the peak to peak value, which is why we need RMS (root mean squared) functions applied to the waveforms on the scope to create RMS power values. Mr. Jalepino, Techical Moderator for The Sustainable Media Co-operative Consortium (www.sustainablemedia.co) explains in more detail. www.sustainablemedia.co/qeg for more
Views: 610 Charles Fraser
EEVblog #25 - The Infinite Resistor Puzzle
 
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Dave solves the famous Infinite Resistor Puzzle, the old fashioned way...
Views: 69540 EEVblog
ddjjip - and the bass goes (official track)
 
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dupstep,house,music,dj,hd
Views: 57 jip dane

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