This circuit with TTL integrated circuits was found in the December 1987 issue of Radio Electronics magazine. The circuit uses a LED scale and is suitable for gaming applications.
The circuit also works as a synchronized rectifier and balanced modulator. We found it in the...
This circuit is from an American documentation of 1975. The FET may be the BF245 and the relay is of...
This low voltage lamp flasher can be powered from 12 V supplies. Frequency is adjusted by P1 and...