Chopper Phase Detector - Circuit Analysis

[@igorb4650]

Neat approach with virtual ground, even from cutting costs perspective

[@AllElectronicsChannel]

indeed!

[@like_cabezon3810]

Wow very interesting. Looks like the microwave sampling phase detector that you have explained also when the two strobes Need to be differential to Not affect the Output. All of those old manuals are filled with knowledge and good ideas to use.

[@andrewphillip8432]

Really elegant! I built a chopper using analog switches once. Looking forward to trying this out, I think it would be a improvement

[@AllElectronicsChannel]

Go for it!

[@aduedc]

Nice circuit thanks for sharing. This gives me an idea to design wide band phase detector. We can measure current on a line amplify it to make a square wave, or use a zero crossing detector to generate square wave, do the same with voltage and use a PLL's PFD for phase detection, and then use a charge pump, and then a filter to integrate the output of the charge pump. The output voltage will be proportional to the phase difference, between current and voltage or power factor. You can do the same thing with two voltages, as well.

[@AllElectronicsChannel]

Beautiful!

[@saarike]

Really interesting!!! Thank you.

[@ralvarezb78]

Hi Greg, these feedback loop techniques fornulling reminds me analog Least Mean Squares and also feedfoward linearization (of course these are other different subjects, but Im talking about nulling feedback loop and main idea). Another brilliant video, good job!

[@AllElectronicsChannel]

Interesting!!! Thanks I never heard of the analog LMS concept 😳😳😳

[@doctortono]

3:26 where I can find the theorical support for thar 1/3 of incomming signal?? DO you have bibliography or a theory notes for please?

[@AllElectronicsChannel]

Just search about the Wien Bridge oscillator. The 1/3 follows readily from the analysis of the RCs networks.

[@doctortono]

@@AllElectronicsChannel ok thanks!

[@heitortoledo6152]

Fala grande !!! Eu tenho um equipamento desse, é lindo de mais misericórdia!!! É de uma complexidade terrível hahahahah não achei muita coisa dele operando, usando ele manja. Abração grande !!!!!

[@uchihaluoutsider8956]

Ei Gregory, Poderia disponibilizar novamente o vídeo em que você faz recomendações de livros? Recentemente consegui dinheiro para comprá-los, mas quando fui checar o vídeo da lista de livros que você passou, vi que ele não estava mais disponível.

[@AllElectronicsChannel]

Send me a mail

[@evertontrindaderisso8855]

Olá tudo bem. vim procurar aquele video antigo que vc fala sobre impedância em falantes, que pra mim é o melhor video explicando sobre o assunto e ia mandar ele em um grupo mas notei que não tem mais ele. Vc teria ele para me mandar?

[@bumohamedubualooy7111]

what is the use of c3? in some other instruments the diff pair have similiar capacitors like c3 in series with small resistor, is it feedback?

[@AllElectronicsChannel]

C3 that couples the signal from one emitter to the other.