Found in an EEE from 1970, this circuit supplies a voltage of 12 V DC x 10 mA current from the power grid. The NOR or NAND port used is TTL.
The configuration shown in the figure uses two NPN transistors activating the load when the input...
It is a 13.8 V x 10 A regulator obtained in a 2008 documentation. The 2N3055 transistors must be...
This timer of 10, 25, 45 seconds and 5 minutes has its times selected by the keys. The circuit drives...