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.
The four gates of a 40111 IC are used in thes two-out circuit. The output chages their state in a...
This low power, low voltage circuit was found in old General Electric documentation. Transistors may...
This grounding test circuit was found in an American 80's documentation. The circuit is for the...