This circuit is from a June 1992 Radio Electronics. The circuit is for 4.5 MHz signals from old analog televisions or other similar applications.
This configuration, which uses a transistorized circuit in the feedback, provides a logarithmic response...
This receiver uses one of the first transistor types available on the market, the CK722, but it...
Suggested by General Electric in 1967 this circuit generates a single pulse when receiving a light signal...