atx_power_supply_schematic.pdf
DESCRIPTION
ATX_power_supply_schematicTRANSCRIPT
EMI FILTER
INRUSH CURRENT LIMITER
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INPUT LINE SELECT (SHORT FOR 115VAC)
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POWER TRANSFORMER
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BASE DRIVE SIGNAL TRANSFORMER
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PWM IC
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COMBINED FEEDBACK FOR 5V AND 12V OUTPUTS
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BIAS AND 5V STANDBY SUPPLY BASED ON FLYBACK CONVERTER
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OPTO-ISOLATED FEEDBACK FOR BIAS SUPPLY
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MAGAMP REGULA-TOR FOR 3.3V
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300W ATX POWER SUPPLY: 5V/30A, 3.3V/28V +12V/15A, -12V/0.8A, -5V/0.3A, 5VSB/2A
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HALF BRIDGE CONVERTER
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COUPLED OUTPUT INDUCTOR
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http://www.smpspowersupply.com/
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INPUT VOLTAGE SENSE
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8A/250V
MAGAMP CHOKES