The sensor is S1 in this alarm that we found in a Radio Electronics magazine from May 1971. Several sensors can be used in series. The SCR supports equivalents from the 106 series.
This circuit was obtained in a 1986 documentation consisting of an active frequency divider for...
The circuit shown is from the Motorola Linear Databook of 1990. It is based on the Motorola T...
This 1 kHz oscillator was found in the February 1970 issue of Radio Electronics magazine. It uses...