Impedance Converter Amplifier - Circuit Analysis

[@AllElectronicsChannel]

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[@steniomedeiros6709]

Fantastic video! It was a great idea to study renowned equipment blocks and thus inspire our own projects with mastery of the technique. A big hug.

[@AllElectronicsChannel]

Glad you enjoyed it!

[@drdoc124]

Thanks for introducing me to impedance converters

[@misterjorous]

Genial o video. Esse tipo de conteúdo é super raro de ver por aí. Eu adoro análise de circuitos, principalmente em microelectrônica. Parabéns pelo vídeo. A espera de mais videos assim. Abraço

[@danstiurca7963]

Excellent analysis! Great video and great circuit.

[@AllElectronicsChannel]

Glad you liked it!

[@DoktorJeep]

Analog was the apex of technology

[@CBtronica]

Excellent explanation! The HP 3400a true RMS voltmeter also has a similar circuit at the input, but instead a JFET, It uses a Nuvistor tube with a BJT and is more relaxed about linearity, once a higher distortion factor will not degrade the measurement for a rms voltmeter with ±1% accuracy.

[@AllElectronicsChannel]

Thanks for the info!

[@whatevernamegoeshere3644]

The bootstapped diodes are beautiful lol. Had to use the same funny business in a mic amp to get rid of the capacitance because it was almost 5pF. Also it not only reduces the capacitance, but it also nulls out that 5-20nA of leakage, even 200-500nA in some old diodes and it keeps them properly closed at 0V and they won't enter their curves and become non-linear. They will also start to function as varicap diodes at that sort of range because that capacitance changes with voltage. That bootstrap is an essential part of linearity in this case, it isn't only for increasing the input impedance and bandwidth. Also if you REALLY want to get rid of absolutely all the leftover nano and pico units, you can just put more diodes in series.

[@AllElectronicsChannel]

Great comment! Thank you so much for pointing that. Indeed, this is key for maintaining linearity, something I did not notice when recording. Welcome to the channel. Greg

[@igorb4650]

Whow, so much moving parts in this design!

[@AllElectronicsChannel]

Yep!!

[@LousyPainter]

Great video! I'm very curious about the purely negative bias.

[@AllElectronicsChannel]

You and me both!

[@ViniciusMiguel1988]

Your English is getting way better Greg

[@AllElectronicsChannel]

thanks!

[@googlem7]

Very good explanation 👍

[@andersonnobre5163]

Perfect english! Thank you my dear Greg. Parabens pelo video em ingles!

[@AllElectronicsChannel]

Thank you! 😃

[@toluxtondz6214]

I have a transmitter of 2 watts. What are the electronic components that he replaced in order for his power to be greater

[@Abdullahkhan-lk5zl]

Hello everyone, I have a question why is there a resistor before the ground. What is the purpose of that resistor.

[@AllElectronicsChannel]

They are biasing resistors only.

[@garygranato9164]

could the negative supply be because some transistor create less distortion when operating in inverting mode ??? (noob question)

[@kolirock4836]

Hi sir I want to make a uav and want to add a small x band radar for that I need your help for design the radar please