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please, help me. SMPS for 50A,13.8, with low profit
please, help me. SMPS for 50A,13.8, with low profit
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Old 13th July 2009, 01:39 AM   #1
albert_emule is offline albert_emule  Brazil
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Default please, help me. SMPS for 50A,13.8, with low profit

my SMPS is with 20A in 112vac, and 50A in 14.74VCC

WHAT CAN BE CAUSING THIS LOW PROFIT?
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Old 13th July 2009, 01:42 AM   #2
albert_emule is offline albert_emule  Brazil
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http://img199.imageshack.us/img199/2042/dsc01251o.jpg
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Old 14th July 2009, 06:09 AM   #3
luka is offline luka  Slovenia
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please, help me. SMPS for 50A,13.8, with low profit
You are reading something wrong...
Show some waveforms and what is heating or at least something
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Old 14th July 2009, 07:00 AM   #4
woody is online now woody
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please, help me. SMPS for 50A,13.8, with low profit
Those figures 112v @ 20A (2248w) in and 14.74v @50A (737W)
out simply can't be right! Could you be measuring peak input
current? One other question just how hot is that poor bridge
rectifier getting? without a big heatsink I doubt it's going to last
verry long.
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