This source for 50 W amplifiers per channel was found in 1967 Delco documentation. Transistors are from that time, difficult to obtain today.
In the figure we have an oscillator for microcontrollers capable of operating in the frequencies of 10,...
This circuit was found in an 80's General Electric documentation. The circuit uses components from the...
This reset circuit was found in a 90s Popular Elctronics. It is used to protect sources, turning...