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.
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.
 ATX 250W with SG6105 |
 ATX M-TECH |
 MaxPower PX-300W ATX |
 300W ATX |
 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 |
 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.
