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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Circuit of Tremolo (CB1490E)
We found this circuit in the National Semiconductor Audio Handbook of 1977. The circuit produces...
Old Push Pull Lower Power Amplifier (CB944E)
This stage was used in old audio ampliiers and radios from the 1950s and 1960s. It uses one of the...
9 V Battery Tester and Cell (CB15087E)
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