Grounding test (CB10092E)

This simple circuit for a common 110 V power grid was found in a 1980s American documentation. The circuit uses neon lamps as indicators.

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Alternating Current Electrolytic (CB4613E)
We can use high value electrolytic capacitors in alternating current circuits with the...
Transistors as Rectifiers (CB18958E)
In the figure we have the way to use power transistors as rectifiers in a source, replacing common...
Measuring low frequencies (CB25989E)
This circuit can measure frequencies up to 10 kHz using a digital multimeter or the 7107. The...