Found in documentation from the 1970s, this circuit uses an oscillator and a display to warn of speeding. The circuit applies to cars with contact breaker.
In the figure we have an oscillator for microcontrollers capable of operating in the frequencies of 10,...
A pulse goes off this horn produces 800 Hz tone when fired. Powered by 5 V the circuit works as a...
This circuit is from a 1966 Motorola Field Effect Transistors Manual. The circuit makes use of...