Found in the Encyclopedia of Electronic Circuits volume 5 from 1995, this circuit uses a transformer. The circuit feeds a transformer that produces 200 V for a xenon lamp.
Found in a Philips documentation from 1968, this circuit detects the trimpot set input voltage....
This circuit can be connected to the output of alarms or sirens with the 555, CMOS or TTL,...
This simple capacitor tester, already covered in other articles in this section and on the...