This circuit is from a 1968 documentation using one of the first integrated circuits available at the time, the TAA370. The circuit is powered by 1.3 V using a 200 ohm handset.
This dual-LED circuit indicates three signal levels. It was found in the January 1996 issue of...
This circuit was obtained in a 90s Electronic Design. The circuit uses components from that time....
We found this circuit in Linear Technology Applications 1993. The maximum output current is 5 A...