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.
In the figure we have a different configuration for an oscillator with the 555. This circuit was...
This circuit is from 1994, from a technical documentation from National Semiconductor, but can be...
We found this circuit in a 1982 documentation, but the circuit can still be easily assembled, as the...