This circuit was found in a 90s Radio Electronics. It is intended to amplify the sound channel of analog televisions of the time. The integrated circuit used is uncommon today.
This circuit is the digital indicator for the previous circuit and can be used with similar...
This circuit is found in documentation from the 1990s. The load can be a relay and the sensor, an LDR of...
This circuit limits (clip) the intensity of a signal, according to the setting of P. The circuit is...