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All Electronics Channel
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Добавлен 28 апр 2020
This channel is focused on Electronics Engineering videos, covering aspects from different areas. Learn about analog design, RF, instrumentation and general electronics technical design.
Noise Source and Noise Measurement Basics
Gregory covers the essentials of Noise Sources and Measurements, focusing on the use of a BJT transistor as a noise source. The BJT is configured with a reversed bias at its base-emitter junction, followed by a series of common-emitter amplifiers.
To analyze the noise at the circuit output, Gregory employs a Spectrum Analyzer with a noise marker function. This data is then used to estimate the BJT Excess Noise Ratio (ENR), factoring in the noise floor and amplification gain slope of the measurement setup.
The results are presented as Noise Power Densities and Noise Temperatures, chosen for their convenience in respective calculations. This approach allows for a straightforward yet thorough ...
To analyze the noise at the circuit output, Gregory employs a Spectrum Analyzer with a noise marker function. This data is then used to estimate the BJT Excess Noise Ratio (ENR), factoring in the noise floor and amplification gain slope of the measurement setup.
The results are presented as Noise Power Densities and Noise Temperatures, chosen for their convenience in respective calculations. This approach allows for a straightforward yet thorough ...
Просмотров: 21 433
Видео
Frequency Reference Source - Clock Distributor
Просмотров 3 тыс.9 месяцев назад
Gregory experiments with a Reference Source and Clock distributor that uses the Si5351 clock generator IC. The unit comprises an Ovenized Crystal Oscillator OCXO as the frequency reference, an 8 output clock distributor IC, and a modern microcontroller. Each output is configurable independently, with a frequency range from 10kHz to 200MHz. This video was made possible by the Patreon community. ...
How a Tesla Coil Works
Просмотров 5 тыс.Год назад
Gregory explains how a Tesla Coil works. The working principle is explained from the Tesla Coil end-result - the creation of big sparks - going backwards to the power electronics stages and how they operate. A DRSSTC Tesla Coil utilizes a power electronics inverter, feeding a double resonant circuit that converts the low impedance power, creating high voltages sufficient for breaking the dielec...
Signal to Noise Ratio, Noise Temperature and Noise Figure
Просмотров 8 тыс.Год назад
Learn more about SNR, Noise Measurements and its use cases: keysig.ht/otuWWh Gregory explains the implication on noise degradation on amplifiers chains, what is Signal to Noise Ratio, how to calculate noise in terms of Noise Temperatures and what is Noise Figure. Support the channel, becoming a Patron: patreon.com/allelectronics
Fundamentals of RF Power Sensors
Просмотров 7 тыс.Год назад
Learn more about RF Power Measurements and its use cases: keysig.ht/YAXLrf Gregory explains the fundamentals of how diode detector RF power probes work. Support the channel, becoming a Patron: patreon.com/allelectronics
Power Amplifier Linearity and Predistortion
Просмотров 5 тыс.Год назад
Learn more about Power Amplifier Linearity measurements and its use cases: keysig.ht/sjjpAI Gregory explains the basics of power amplifier linearity and predistortion. Simulations are used to demonstrate how the nonlinear behavior of a PA generates spectrum regrowth, how the data constellations are affected and how a nonlinear model is used in a digital predistortion topology. The tradeoff betw...
Phase Noise Measurement using Cross-Correlation
Просмотров 2,8 тыс.Год назад
Learn more about Phase Noise measurements and its use cases: keysig.ht/p2uccz Gregory explains how Phase Noise below the measurement setup noise-floor is measured, using two separated analyzers and cross-correlations in the frequency domain. Some methods of Phase Noise measurement are limited by the analyzer own phase noise profile, as its own noise adds to the measured signal, corrupting its p...
Transformer and Magnetization Inductance
Просмотров 5 тыс.Год назад
Gregory explains the transformer model and how the magnetization inductance behaves in the circuit. Circuits using transformer are sometimes hard to understand because of the complex behavior of the magnetization inductance and the leakage inductance. A trick for measuring the magnetization current in LTSpice is given, demonstrating in depth how the waveforms relate to the transformer behavior ...
Blocking Oscillator - Vacuum Tube Oscillator
Просмотров 3,6 тыс.Год назад
Gregory explains the Blocking Oscillator topology, used in the Vacuum Tube era, as the standard way of creating pulses and periodic signals in electronics. The Blocking Oscillator is a relaxation oscillator, that uses positive-feedback, accomplish by a pulse transformer, to create narrow pulses with very fast rise/fall times. It was one the most used Vaccum Tube Oscillator type. The pulse repet...
Chopper Phase Detector - Circuit Analysis
Просмотров 3 тыс.Год назад
Gregory explains the working principles and makes a circuit analysis of a Chopper Phase Detector, from an HP 334A Distortion Analyzer. The phase detector uses a differential amplifier and a single chopper transistor, chopping the incoming error signal, generating a DC level proportional to the phase difference. The differential amplifier generates two out-of-phase signals that follow to the tra...
Impedance Converter Amplifier - Circuit Analysis
Просмотров 3,8 тыс.Год назад
Gregory explains the working principles of an Impedance Converter Amplifier, from an HP 334A Distortion Analyzer. The amplifier uses positive feedback heavily, to increase open-loop gain and to linearize the input impedance. Full negative feedback locks the closed-gain at unity, cleaning the heavy non-linear effects of transistor amplification. My video about nonlinear circuits and harmonic dis...
How an Amplifier works - amplifier with gain control
Просмотров 8 тыс.Год назад
Gregory demonstrates how an amplifier works. IF amplifiers in transmitter and receiver chains commonly need a way of gain control. When used if amplitude detector, these amplifiers have are called AGC - Automatic Gain Control - systems. SSB radios are an example of linear systems that use IF amplifiers for overall amplitude control, maintaining linearity from end-to-end. Amplifier for IF freque...
THD - Total Harmonic Distortion
Просмотров 9 тыс.Год назад
Gregory explains what is THD - Total Harmonic Distortion, using the circuit from the last video. An oscilloscope is used for a THD measurement, and the limitations are shown, as the harmonic distortion of the oscilloscope front-end masks the oscillator THD. THD is a measurement of distortion, used as the main figure of merit in audio applications, where the non-linear behavior is characterized ...
Wien Bridge Oscillator with AGC and PLL
Просмотров 4,4 тыс.Год назад
Gregory explains the circuit of a Wien Bridge Oscillator, that uses automatic gain control and a PLL architecture for amplitude and frequency stability. The Wien bridge oscillator works by positive feedback excitation over a linear amplifier. Very high harmonic purity is accomplished by the passive feedback network and the linear operation. Automatic gain control is need to sustain oscillation ...
How to check if an operational amplifier is fake
Просмотров 3,3 тыс.Год назад
Gregory demonstrates the measurement of Slew Rate using for operational amplifier, helping to finding fake opamps. Slew Rate is a figure of merit of op amps, and, as demonstrated, may be used to find fake opamp parts. The oscilloscope is used as the measurement tool. Support the channel becoming a Patron patreon.com/allelectronics
Microwave LNA Amplifier - Reverse Engineering
Просмотров 5 тыс.Год назад
Microwave LNA Amplifier - Reverse Engineering
Received gifts - RF Components and Parts
Просмотров 1,3 тыс.Год назад
Received gifts - RF Components and Parts
Investigation on Signal noise and Spurious tones
Просмотров 2,4 тыс.Год назад
Investigation on Signal noise and Spurious tones
Smith Chart Impedance Matching for RF Amplifier
Просмотров 6 тыс.Год назад
Smith Chart Impedance Matching for RF Amplifier
Ham Radio SSB Processor with AVR Microcontroller
Просмотров 4,1 тыс.Год назад
Ham Radio SSB Processor with AVR Microcontroller
DSP Baseband Speech Processor for ham radio
Просмотров 4,1 тыс.Год назад
DSP Baseband Speech Processor for ham radio
433MHz Polyclass RF Amplifier for phased-array | HP 8505A VNA
Просмотров 6 тыс.2 года назад
433MHz Polyclass RF Amplifier for phased-array | HP 8505A VNA
Parametric Oscillator - Microwave Frequency Divider
Просмотров 2,8 тыс.2 года назад
Parametric Oscillator - Microwave Frequency Divider
The simplest BPSK DSSS Radio Beacon with SDR demodulation
Просмотров 4,9 тыс.2 года назад
The simplest BPSK DSSS Radio Beacon with SDR demodulation
Spread Spectrum Modulation and Demodulation
Просмотров 9 тыс.2 года назад
Spread Spectrum Modulation and Demodulation
Please talk about how to amplify output signal of an rf module like nrf2401. Thanks
Simply Genious
Fantastic explanation and demonstration!
Smith Sharon Moore Christopher Taylor Larry
Robinson Susan Thomas Jose Thompson David
Thomas Helen Jackson Ronald Martin Barbara
Gonzalez Ruth Perez Karen Martin Larry
Wilson Laura Jones Susan Smith Paul
I love it thanks
I'm glad
Wonderful!
Glad you think so!
This is the best explanation of class a, ab, and b that I have ever seen. Excellent! Thank you,
Glad it was helpful!
Vídeo foda!!
Thank you! That video was great!
Glad you liked it!
Amazing. Вы из России?
I'm CSE student, and trying to understand this PLL thing. Guys at 7:35 , "If we have bit rate of 1200 bits ...pulse will be of 1200 Hz.." My Question is : once we detected edges/pulse of input signal (which will have different widths/distance between pulses dependent on data for example 110001, so the pulse would be like **|***| (*=diff volt representing bits 1 or 0 , edges=|), right?) , how do we get correct clock? . Also (7:35) why pulse repetition rate would also be 1200 Hz, which is dependent on data bits. for examples a data like 1001111100110 wouldn't have edges/pulse of same interval. would it?
@AllElectronicsChannel plsss help me understanding it
obrigado
Forgive my dumbness, I was always confused by clocks and still am. Have a question: So If I for example. continuously have data 00110011... and PLL is locked thinking clock is actually 2x slower - and now I get data 01 - it won't be recovered correctly? Or did I get everything completely wrong?
Ok I think I found online that training sequence and type of encoding where each bit is represented by transition is what helps this?
Yes! And also: the PLL will not think the clock is 50% lower... The PLL is designed to correct for deviations.. like 5 ppm (100 * 5 / 1000000) %
Very nice explanation and deatails not commonly available. From the graphs I think its been implied that the signal applied to the diode has already some dc bias to support its non linear but critical asymetric conduction to have a meaningful reading on the instrument
Is the Tesla Coil only used for making sparks? Can you design the Tesla coil to be applied to a load?
what is the 1 Mhz used for? why are you using 1Mhz to modulate the 2Ghz?
quick question. what are the consequence if you oversampling it even shifting the sync signal with 90 degree? like would the detector go on the edge?
Hi, I did not get. For the digital version I demonstrated, the system is running oversampled.
Whats a practic use of this project
nice!
I voice searched for impedence matching of physiology and i found this 💀
Do you have an image of the circuit for printing or downloading?
Could you do it in GNU Radio?
Hey man, I personally don't use GNU radio, but certainly you could do it
@@AllElectronicsChannel I need a guide, I don't know how to do it. 😭
Aren't good videos about it here on YT?
Newbie question here: On the gate of j-fet I can use a trimpot or potenciometer ?
Yes, you can !
Really helpful 👏
Great Video and Great Explanation. Thank you.
Glad you liked!
Came here after working with un ultra sound echo detection IC using logarithmic amplifier. Tuss4440.
Awesome explanation!!
Glad you think so!
Really good video, thanks
Glad it helped
Good explanation. I see in practice the oscillations in the loop with wrong designed filter. It is a rare tutorial for PLL where this concept is described.
Glad it was helpful! You can learn these fundamentals by studying classical control theory.
@@AllElectronicsChannel I have studied it, but it was about 20 years ago )
монтаж очень агрессивный.
Thanks for loving the content!
Very good content, keep it up! (but I should admit your English accent is like a torture)
Hahahaha! Thanks
What happens when continuous 1's or continuous 0's are sent ?
You lose sync after some time.
awesome video. I’s been wanting to understand this exact process for months
Glad you enjoyed it!
who's watching this genius in 2024? thanks Greg, you are the best!!
S2 S2
❤
I wish that my College lecturer would have taught like this...... Hat's off to you Sir
Thanks!
I worked on this extensively about 20 to 25 years ago, when technology was emerging to make this practical with off the shelf DSPs, without having to rely on dedicated ASICs or a large component count solution. There were other complexities in my application, as it was for space, and I was also using additional methods applied to the PA itself, based on Doherty techniques, to improve efficiency to reduce power budget and improve thermals. I never thought I'd ever see a RUclips video on it though! Bravo!
Thanks!!
Great video!
THanks!
Which transistor can be used for 700 KHz switching speed
2n2369?
Great video, I got a bunch of RF transistors and I wanted to test their liability, so I'm going to make a GHz VCO for the matter. Said to myself, I look for some suggestions and I came to your video!
Sounds great! Good luck man!
great work on this content !
It's one of the best videos on RUclips. Thanks.
Glad you think so!
Please Make a video on "How we can improve the linearity of class c RF amplifier ? "
This is one of my favorite RUclips videos. Very helpful to explain advanced non linear energy generators. Lighting from the ground up!
Wow, thanks!
Ok now in English
At the FFT waveform, there were peaks at 1.2KHz, 2.4, and 3.6. Why does 2.4 and 3.6KHz come from?
The frequency components of time domain pulses are also "peaks" in frequency, spaced by the 1 / T, where T is the repetition period of the pulse.