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ICs TL494 and KA7500 are equivalent. The letters of 494 can differ. Theese supplies use bipolar junction transistors (BJT) of NPN type.
WINTECH PC WIN-235PE
UNKNOWN AT
SUNNY TECHNOLOGIES AT 200W
SUNNY ATX-230 UC3843 TPS5510P.gif
SEVENTEAM ST-200HRK 200W
SEVENTEAM ATX2V2 WITH TL494
SEVEN TEAM ST-230WHF 230W
SCHEMATIC OF AT 200W -W -TL494
PTP-2038 ATXPS 200W
POWERMASTER LP-8, 230W
POWERMASTER FA-5-2, 250W
POWER EFFICIENCY ELECTRONIC
PC SMPS AT, CCA 200W
PC ATX EC MODEL 200X
OLD AT, CCA 200W
OLD AT SMPS (VALUES MISSING)
MICROLAB 400W, KA7500B
MAXPOWER ATX PX-230W
JNC COMPUTER LC-250ATX
GREEN TECH MAV-300W-P4
DTK-PTP-2038 200W ATX
DTK COMPUTER PTP-2007 MACRON
DELTA DPS-200PB-59 H
CODEGEN ATX 300W
CODEGEN ATX 250W - 250XA1
ATX-300P4-PFC (PASSIVE PFC)
ATX, IC= TL494
ATX SHIDO 250W, TL494
ATX LWT2005 CHINA, KA7500B
ATX (VALUES MISSING)
ALIM ATX 250W SMEV J.M 2002
230W KEY MOUSE ELEKCTRONIC