The idea of this circuit found in a Radio Electronics from January 1966. The idea of the circuit is to improve the reception of audio signals, mainly telegraphy, working as a filter.
This circuit visually indicates that a high voltage is present in an outlet or other point. The...
This circuit changes an audio signal to get better reproduction. It is important when editing...
We show only one of the channels of an excellent audio preamplifier with the LM382 integrated...