This alarm circuit with NC sensors in series was taken from an article in Radio Electronics magazine from May 1971. The SCR can be any of the 106 series.
This circuit is from National Semiconductor documentation and employs LM102 operators that are no...
This distortion circuit was found in an American publication from 1970. It can be assembled with...
This circuit consists of a Step-Down converter (voltage reducer) that can provide a 5 A output with...