AT and ATX PC computer supplies schematics

On this page i collect the schematics of switching supplies for Computers (SMPS) ATX v 1.0, ATX v 2.0 and some AT, which i found on internet. I'm not the author. The author is noted usually directly in the schematic.

Schematics of halfbridge ATX (AT) supplies with TL494, KA7500
ICs TL494 and KA7500 are equivalent. The letters of 494 can differ. Theese supplies use bipolar junction transistors (BJT) of NPN type.

Schematic of AT 200W w/ TL494	ATX Shido 250W, TL494	Microlab 400W, KA7500B	ATX, IC= TL494 (output power=?)
230W Key Mouse Elekctronic	PC SMPS AT, cca 200W	old AT, cca 200W	Sunny Technologies AT 200W
Codegen ATX 250W - 250XA1	Seven Team ST-230WHF 230W	JNC Computer LC-250ATX	SevenTeam ATX2V2 with TL494
PowerMaster FA-5-2, 250W	PowerMaster LP-8, 230W	SevenTeam ST-200HRK 200W	Green Tech MAV-300W-P4
DTK-PTP-2038 200W ATX	Codegen Atx 300W	ATX LWT2005 china, KA7500B	Delta DPS-200PB-59 H
Alim ATX 250W SMEV J.M 2002	ATX (values missing)	Power Efficiency electronic (-//-)	Old AT smps (values missing)
unknown AT	Wintech PC WIN-235PE	MaxPower ATX PX-230W	DTK Computer PTP-2007 Macron
PC ATX EC Model 200X	ATX-300P4-PFC (passive PFC)

Schematics of halfbridge ATX PC supplies with SG6105.
Schematics of ATX switching supplies with SG6105. Theese supplies use bipolar junction transistors (BJT) of NPN type.

Schematic of ATX 250W with SG6105	ATX M-TECH	MaxPower PX-300W ATX	300W ATX schematic diagram
PowerMan IW-ISP300A3-1 PFC	Nuitek 330U - ATX 330W

Schematics of halfbridge ATX PC supplies with KA3511
Supplies ATX with KA3511 integrated circuit. Theese supplies use bipolar junction transistors (BJT) of NPN type.

ATX 145W 145-60SP schematic

FSP Group Inc. 145-60SP

Schematics of halfbridge ATX PC supplies with DR B2003
ATX PC SMPS's with DR B2003, marked as 2003. Theese supplies use bipolar junction transistors (BJT) of NPN type.

JNC Computer co. LC-B250ATX

JNC Computer co. Y-B200ATX

Schematics of othed halfbridge computer supplies.
ATX switching supplies with DR B2002 (marked 2002), AT2005 (2005) and its equivalents LPG899 and WT7520. Theese supplies use bipolar junction transistors (BJT) of NPN type.

LC Technology inc. LC-A250ATX w/ 2002

Powerlink LPJ2-18 300W, LPG-899

Schematics of forward topology ATX supplies with UC3842, 3843, 3844, 3845 and other
ATX supplies using forward topology with single switch or double switch (half-controlled bridge). Transistors are MOSFETs. Control IC's are UC3842, 3843, 3844, 3845 or other IC's, which are a combo for boht supply and active PFC controll like ML4824, FAN480X and ML4800.

DPS-260-2A, ML4824, act.PFC	ATX - two switch forward, PFC	two switch forward + PFC, FAN480X	two switch forward + PFC with ML4800
incomplete IP-P350AJ2-0, UC3843, 350W	UTIEK ATX12V-13 600T, UC3843	ATX CWT PUH400W two switch forward, UC3845	Sunny technologies co. ATX230, 230W, singe switch, UC3843
ATX w/ PTP-2068, singe switch, UC3843	ATX 350T - 350W, UC3842	Sunny technologies ATX-230 2SK2545, UC3843	ATX with STW12NK90Z, UC3843
API3PCD2-Y01, two switch forward, missing values

home