Wire Finder (CB21301E)

Found in an Electronic Hobbyist Handbook from the 1990s, this circuit is intended to apply a signal to a cable to enable its location.

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Passage Alarm (CB18109E)
The pass-through alarm we present uses an infrared (IR) emitter as a sensor. When cutting the...
Practical Flip Flop (CB21810E)
This circuit with germanium transistors was found in a Mullard manual from 1960. The components depend...
4 20mA Interface LTC1453 (CB4900E)
This circuit was found in a Linear Technology manual from the 1990s. The component is the LTC1453...