This circuit is from a 1978 magazine Radio & Electronics Constructor, but it can be assembled with 1N4004 diodes and TIC106 SCRs for motors up to 1A. The transformer has a secondary 12 V x 1 A.
This circuit was obtained from 1967 documentation. It uses a sensor to determine the trigger...
Found in an old Popular Electronics this circuit can also be adapted to be used as a shield. In...
This one-digit TTL modulus for 7-segment display can be parto f digital projects. Many of them can be...