This circuit is from an 80's Radio Electronics. The circuit has several output options for 50 mA currents with load indicator through LEDs.
This circuit is from a 2004 publication. The triac must have a heat sink as well as the SCR and...
The circuit shown in the figure generates rectangular signals up to 1 MHz with three types of...
This circuit is from Motorola documentation from the 70s. The transistors used are high voltage types...