These 6 to 12 V source with current up to 100 mA was found in Radio Electronics magazine from June 19666. The source has a current indicator and uses transistors of the time.
This oscillator with emitter follower was found in an American documentation from the 80's. The...
The buffered phase shift oscillator circuit shown in the figure oscillates at a frequency of 2.9...
The original purpose of this 1963’ circuit from a magazine is to replace the mechanical vibrators used...