Negative Ion Generator (CB25366E)

We found this voltage multiplier circuit in a Radio Electronics magazine from December 1991. The high voltage transformer is an adapted flyback

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WWV Converter (CB7324E)
WWV is the prefix for the United States' time and frequency patterns station. These signals can be used...
Remote volume control (CB23927E)
This wired control circuit serves both volume and balance between channels. We found it in Radio...
555 Audio Oscillator (CB220E)
This circuit produces a loud audio tone by a small loudspeaker. Power supply voltage ranges from 5...