This circuit has tone control, and its power depends on the supply voltage. The circuit is from the Philips integrated circuits manual from 1990.
This circuit was found in the January 1971 Radio Electronics magazine. It keeps the light flashing if...
This circuit is from the SGS manual of linear integrated circuits. The circuit can be implemented with...
Found in a 90s Hands On Electronics, this small preamp finds applications like microphones and other...