Power Supply for Active Ground Sound Solution
PSU4SA is a complete power supply unit with many features.
It provides power for DCN23 and a number of PA1CC or PA3CC or other high quality amplifier modules.
PSU4SA has separate linear regulated voltages of 3.3V, 5V and +/-9V to supply the DCN23.
An input sensing circuit keeps an eye on signal inputs at DCN23 to auto start the power amplifiers.
A switch selects between ON - STAND BY - AUTO SENSING to ease the use in daily life. If on or signal is
present this switches the transformer relay on. The transformer ramps up the 4 pieces low ESR capacitor bank
by soft start circuit limiting inrush current to about 7A. When ready, the power amplifiers are unmuted by
pullup to GND. There are two LEDs to indicate STAND BY or ON. PSU4SA will ensure enough resources for
the power amplifier modules to easily drive, even difficult speaker impedances.