This counter was found in the November 19983 issue of Radio Electronics magazine. The power supply can be between 3 and 12 V typically. The counting speed depends on C1.
In this application, from English documentation, we have the way to activate an AC load up to 10 W...
This circuit was found in a General Electric documentation from 1965. The purpose of this circuit is...
This 13.8 V transistorized power supply with a current capacity of 20 A has a protection system...