Found in a Popular Electronics from the 90s, this circuit uses components that are still current. The circuit triggers the vehicle's horn. The sensors can be increased in number.
n be assembled with BC558 transistors for low power transistors and a BD136 for the output. The...
This low input impedance amplifier stage was found in a 1963 documentation. The circuit employs a...
The purpose of this circuit is to pass an audio signal from one channel to another in a...