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 can be used as a shield based on 555. The calculation of the timing network is done...
The SCR used in this 80's circuit depends on the load. The control is half wave and instead of the neon...
Suggested by Siliconix in 1980s documentation, this circuit uses currently uncommon components. The...