Car alarm (CB23933E)

We found this circuit in Radio Electronics from October 1968. The circuit drives headlight bulbs and can be adapted for current applications.

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Sound Voltmeter (CB25975E)
This circuit was found in the September 1996 issue of Electronics Now magazine. The sound provided has...
100 MHz Oscillator (CB23729E)
We found this circuit in a March 1961 Radio Electronics magazine. This circuit reaches 100 MHz...
28 to 5 V Converter (CB26336E)
Using the M1575 this switching converter was found in National Semiconductor documentation from...