This circuit was obtained in a 80s RCA documentation. The circuit uses components from that time. These components can be replaced by modern equivalents.
This TTL heads or tails circuit was found in the July 1973 Radio Electronics magazine. The LEDs...
With this circuit (shield) we can control a load from 500 mA to 1 A, depending on the transistor, using a...
We found this circuit in a Radio & Electronics Constructor from November 1975. The magazine no longer...