Can I bypass active PFC circuit - diyAudio
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Old 21st February 2012, 03:31 PM   #1
diyAudio Member
Join Date: Sep 2009
Location: Pretoria
Default Can I bypass active PFC circuit

Hi. I think I have an active pfc controller board that is giving me problems. The board is soldered SIL to the main smps board. I would like to confirm whether the fault is in fact with the PFC circuit or not. It uses the IR1150s chip. Is there a way to bypass it???
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Last edited by diy didi; 21st February 2012 at 03:34 PM.
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Old 22nd February 2012, 02:14 AM   #2
martin5 is offline martin5  United States
diyAudio Member
Join Date: Jul 2011
Check out the schematic - it is already bypassed by a diode, and by the boost inductor. There should be a decently large electrolytic cap on the PSU. Check the voltage across that.
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