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 the time when photos were revealed in darkrooms. We found it in a 1968...
With the use of a very sensitive and lockable relay this circuit can be used in intervals of 15 to...
This circuit was found in the April 1971 Radio Electronics magazine. The transformer is the type...