Using a CA3030, this circuit was found in the May 1988 Radio Electronics magazine. The power supply must be symmetrical.
November 2016 - Lumileds' new high power Luxeon 5050 LEDs can now be purchased from Mouser...
This simple transistor gain test acts as an oscillator for the transistor under test. The circuit is...
This circuit was obtained in a Motorola manual from 1978. We can use any triac and the coupler with...