One coil FM tuner (CB9698E)

This circuit with only one tuned coil was found in a 1980s American documentation. The circuit uses components from that time.

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Digital Mixer (CB212E)
A stereo digital mixer using the 4053 is built as shown in figure bellow. The IC must be powered...
Triggering Fluorescent Lamps (CB19333E)
The starter circuit shown in the figure was found in an old European documentation. The circuit makes...
Touch Volume Control (CB18092E)
With a touch of a sensor, it is possible to turn on or off incandescent lamps. The circuit must...