LM3914 with expanded scale (CB24652E)

This LED bar graph circuit was found in the October 1980 issue of Radio Electronics magazine. The circuit shows how to change the LED drive values.

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Capacitance Multiplier (CB15074E)
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Synchronizer for Projects (CB14447E)
This circuit of an old 1968 magazine aims to synchronize a slide projector with a recording, but...
Switching power supply (CB21158E)
This switching power supply was found in an Electronic Design from the 90s. The components are...