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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2 transistor radio (CB20517E)
This circuit with germanium transistors was found in documentation from the 50's. The transistors are...
Headphone Amplifier with the 741 (CB10248E)
This circuit was found in an English magazine from 1978, but it is still current, just change the...
Charger for 3 lithium cells (CB9126E)
Found in an Electronic Design from the 80s, this circuit uses an unusual component today, the...