Found in documentation from the 1980s, this circuit is used for resistive loads (incandescent lamps). The triac must be equipped with a heat sink.
Found in a 1967 documentation this circuit can be applied to any operational amplifier. Components...
Mouser Electronics has in stock the MUSBR robust connectors for USB 30 applications from Amphenol. These...
This interesting transistor configuration, which can be seen elsewhere on this website and in this...