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.
The figure shows how to obtain a digitally programmed resistance using the 4066. The circuit is...
We found this circuit in a 1971 documentation. The circuit can be assembled with more modern...
This active crossover filter was obtained from the component manual used. Below is the performance...