Simple logic test (CB10027E)

This simple circuit can make use of any general-purpose transistor. The power comes from the circuit being analyzed.

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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...