Quick Start Siren (CB25765E)

We found this circuit in the October 1994 Electronics Now magazine. The CMOS IC is uncommon these days and the output is low power.

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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...