This sequential circuit of LEDs was found in a Popular Electronics from the 90s. The circuit can be programmed and an adaptation consists of using optical couplers to drive power loads.
This circuit was found in an American audio documentation from 1968. The configuration can be...
This power supply can provide 10 A currents. Its regulation is made by 7812 integrated circuit. The...
With this circuit, of a 1977 Radio Shack documentation, it is possible to demonstrate the...