This photoelectric sensor that triggers a relay was found in an English book from 1989. The transistor is a general-purpose type, and the integrated circuit consists of an operational amplifier.
This low distortion circuit was found in a 1964 Electronic Design. The transistor admits...
This ingenious circuit was found in a 1990s Popular Electronics. The oscillator is a 555 and the...
This short circuit protection circuit accelerates the blown fuse in case of an output overcurrent. The...