Beam Communicator (CB25533E)

This circuit was found in the December 1992 Radio Electronics magazine. Range depends on optical capabilities and also weather conditions.

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Transistor Monostable (CB998E)
This conventional astable uses two NPN transistor and was found in a publication of the year 1968. The...
Stereo Tremolo (CB16637E)
This simple effect circuit for musical instruments and stereos was found in a 1987 publication. Powered by...
Geiger Pulsating Indicator (CB23617E)
This circuit is a suggestion from a Radio Electronics from October 1964. We found it in the patent...