This circuit with losses of 20 dB at 350 Hz was found in older documentation, but it applies to modern preamp and amplifier circuits.
This circuit acts on the dynamic range of an audio signal, which can be useful for recording,...
This is the conventional application of the UCN4202 to control a 12 V stepper motor with current...
Described in the December 1969 Radio Electronics magazine, this circuit is intended to supply the...