Plasma Lamp (CB26130E)

This very high voltage circuit was found in the 1990 special issue of Radio Electronics Experimenter magazine. The circuit consists of a Tesla coil.

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Bass and Treble Control (CB11159E)
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Signal Injector (CB10325E)
This circuit is from a Poptronics, American magazine from August 2000. The circuit can be...
555 with duty cycle (CB24905E)
This circuit allows you to vary the duty cycle without changing the frequency. An interesting...