This circuit was found in an 80's General Electric documentation. The circuit uses uncommon components today like the PUT. Unijunction admits equivalent.
This circuit uses components that are still common despite being from 1995 documentation. The circuit can...
This direct-coupled amplifier was found in Mullard's 1960s transistor manual. The transistors are...
The twin-T oscillator shown in the figure generates sinusoidal signals in the audio track, which...