Found in American documentation from 1969, this circuit switches signals with a FET of the time. The circuit can be implemented with modern equivalent transistors.
This interesting circuit is for controlling a small robot that searches for a light source. The...
This is the version of the previous circuit with shadow activation. The circuit can use relays from...
Other operational amplifiers series, such as the MC34072, MC34074, MC35071, MC35072, MC35074 d...