I’m dealing with a lot of computer power supply circuit arrangement made ​​with EI33 transformer used almost all AT, ATX SMPS control IC TL494 psi resources found in SMPS output voltage operated 2X30 watt amp 140 volt power circuit... Electronics Projects, TDA7294 Active Subwoofer Circuit TL494 Switchmode Power Supply "audio amplifier circuits, ic amplifier, tda7294 amplifier circuit, tl494 circuit, " Date 2019/08/02