Grounding test (CB10092E)

This simple circuit for a common 110 V power grid was found in a 1980s American documentation. The circuit uses neon lamps as indicators.

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RMS to DC Converter (CB6105E)
This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the...
Heavy Metal Guitar Pedal (CB17111E)
We found this guitar effects circuit in a 1997 documentation. As the components used are still...
FM transmitter (CB16910E)
This FM transmitter has a high power thanks to a push-pull amplifier stage at the output. The coil...