Neon Voltmeter (CB13643E)

This circuit was found in a 1974 publication. It consists of a voltmeter for high voltages, up to more than 100 V, using a neon lamp.

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Cable Test (CB25206E)
Found in the March 1989 issue of Radio Electronics magazine, this circuit is used to test printer and...
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This circuit provides two outputs of the same signal. One with the original phase and the other...
Variable High Q Filter with the 741 (CB13604E)
This circuit was found in a 1973 publication. With the components indicated, the range can be from...