It is a 13.8 V x 10 A regulator obtained in a 2008 documentation. The 2N3055 transistors must be mounted in excellent heat sinks and the voltage is adjusted in the trimpot.
This simple circuit makes use of a buzzer with a 6 V oscillator, compensating for the 2 V voltage...
In the figure we show another configuration for a crystal-controlled overtone oscillator using a...
The circuit that we give below has two possible applications: it can be used to control a lamp...