Quality pcb printed circuit design with two amp circuit I share 180 watt amp circuits used in power output transistors 2sa1943 2sc5200 supply voltage + -45 volts DC P-CAD 2001 prepared by the PCB and P-CAD 2001 Schematic prepared... Electronics Projects, Professional Amplifier Circuits 450W 180W "audio amplifier circuits, transistor amplifier, " Date 2019/08/01