Found in documentation from the 1980s, this circuit is used for resistive loads (incandescent lamps). The triac must be equipped with a heat sink.
This simple receiver was found in a book on transistors from 1954. The coil determines the...
This configuration, quite common and found in other sites, is from European documentation from the...
The figure shows a simple way to obtain a negative voltage from a common source configuration. The circuit is...