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 MOSFET amplifier operating in the VHF range was found in an old American telecommunications...
Indicated for applications with a PC, this circuit was obtained in an English publication in 1992....
This 10-step voltage indicator was obtained from a 1980s publication. The circuit is based on an...