With a 12 V supply and a 2 ohms load, this circuit can provide a power of the order of 8 W. The integrated circuit must be mounted on a heat sink. The source must provide at least 3 A.
The circuit shown in the figure consists of a 200mA low voltage drop (LDO) regulator using the...
This circuit was found in an American documentation from the 60's. The transistors are from the...
Found in old documentation, this timer uses a sensitive relay and a 2N2646. The time is given by...