This is the version of the previous circuit for vehicles with positive ground. The circuit is from a Radio Electronics from December 1976. A siren is included.
This circuit generates a pulse of approximately 1 second when the light incident on the sensor...
The 3403 operational amplifier is not common today, but the configuration can be implemented with...
This circuit, published in 1978, can use any general purpose NPN transistor such as the BC548 and...