This automotive circuit was found in the September 1992 issue of Radio Electronics magazine. The circuit directly drives a relay that must have a coil resistance greater than 65 ohms.
Found in a 90s Elektor, this mixer makes use of integrated circuits of the time. The supply must be...
The input resistance of this circuit is 60k and the pass band from 20 to 20kHz. The circuit is...
This circuit is from a publication on Motorola triacs from 1975. In it we have the way to fire a...