gabrigam66 Posted July 23, 2019 Report Share Posted July 23, 2019 Hi, I built the attached ratio detector circuit and it works. but I can't understand the reason for the connection marked in green. I need an explanation, please. Thanks in advance GR Quote Link to comment Share on other sites More sharing options...
HarryA Posted July 23, 2019 Report Share Posted July 23, 2019 The vertical green line supplies current to the transistor. The other part of the green line supplies current to the detector which modulates it to form the audio and afc outputs. Quote Link to comment Share on other sites More sharing options...
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