This circuit was found in a Motorola documentation from 1975. Modern equivalent transistors such as the BF245 can be used. The circuit is powered by 9 V voltage from cells or batteries.
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...