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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Burst Generator (CB6072E)
This circuit was found in a Signetics documentation from the 1980s. The integrated is a PLL and...
LM390 Intercom (CB25310E)
This two-channel wired intercom was found in the April 1990 issue of Radio Electronics magazine....
Negative Differentiator LM3900 (CB5055E)
The output voltage of the circuit shown in the figure is approximately 7.0 V for a 15 V supply...