Tone Oscillator (CB22066E)

Found in old documentation, this oscillator with the LM380 produces an audio tone in a speaker. Frequency is set in VR1.

SCR Dimmer (CB14822E)
This traditional dimmer configuration for incandescent lamps and heating elements was found in an...
Negative Voltage Generator (CB16629E)
This is another possible version of a negative voltage generator using a 555 integrated circuit. The...
Vibrating Wire Oscillator (CB23899E)
A wire vibrating between the poles of a magnet works as a frequency pattern in this oscillator found in...