This optical sensor circuit for a robot was found in the March 1986 issue of Radio Electronics magazine. It controls two motors according to signals from optical sensors or couplers.
This circuit was found in an English magazine from 1978, but it can be easily assembled today,...
This circuit is from an American publication from the 60's. The transistors are made of germanium. It...
This circuit is used for incandescent lamps and other resistive loads up to 3A using the TIC206. This...