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.
We found this circuit in a 1965 magazine. The circuit can be assembled with current equivalent...
This is a typical circuit of a PROM programmer from the 70s. It appeared in the magazine Radio...
If there is an indispensable household appliance in our kitchen these days it is the microwave...