Using the 723 integrated circuit, this circuit was found in an article on power supplies in the August 1971 Radio Electronics magazine. The transistor may be the BD136 on a heatsink.
This circuit is intended to trigger a TTL door or flip-flip from a signal coming from an SCR....
This circuit is from a 1979 publication. The sensor consists of plates or screens that, when...
Bipolar transistors are types of general use like BC548, while the power MOSFET can be of any type...