This timer circuit was found in a 1980s American documentation. Transistors and SCR support modern equivalents. The circuit was originally designed to control a motor.
This circuit fires when the light intensity on the sensor drops below a certain level. The trigger...
This circuit consists of a decoder for remote control that allows the activation of 10 channels based...
This circuit is used to test PNP or NPN transistors giving the status indication through LEDs. The...