This circuit is used to test triacs. It can be connected in series with a resistive load such as an incandescent light bulb. The circuit was suggested by Electronics Now magazine in November 1999.
With changes, this circuit from a documentation of the 70s, can be adapted to use more modern...
Found in a 1968 EEE, this switch controls a high-power load from an audio signal. The current is...
In this circuit the gain decreases as the input signal intensity increases. The circuit is from a...