In the figure we have the configuration of series regulator protector suggested by Motorola in 1968 documentation. The transistors are of the time, being able to be used modern equivalents.
Used in audio circuits in the excitation of output stages, this circuit provides audio signals with...
This interesting configuration uses two speakers as a load to have a push-pull excitation with...
This sweep generator or current-controlled oscillator was found in Popular Electronics from...