This circuit is from American documentation from 1970. It can be designed with a BC558 and for the operational, we can use equivalents. The FET can be the BF245.
This simple circuit is intended to test integrated circuits 555 and 741 in 8-pin DIL enclosures. In both...
This circuit produces the ticking of a clock on a common piezoelectric transducer. The circuit has an...
This circuit is intended to limit the ringing time of a bell. Even if the button is kept pressed for...