This car alarm was found in a 1965 General Electric manual. The SCR can be commonly used with the TIC106 and sensors are placed in the doors using the existing courtesy light switches.
This circuit is from a 1978 magazine Radio & Electronics Constructor, but it can be assembled with...
This circuit was found in an old American magazine for radio amateurs. The circuit is based on a...
This circuit was found in a 1977s English magazine. The SCR can be the TIC106 and the transistor the...