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Chip Amps Amplifiers based on integrated circuits

PSU from a PC
PSU from a PC
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Old 6th August 2003, 09:56 PM   #11
hyperviper is offline hyperviper  United States
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Old 7th August 2003, 05:43 AM   #12
TonyTecson is offline TonyTecson  Philippines
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PSU from a PC
QUOTE]How are transformers in the computer PSUs? usable?[/QUOTE]
the +12/5volts and the -12/5volts are all taken from a single transformer inside the pc psu, an at psu will have a main chopper transformer and a small driver transformer feeding the bases of the transistor switches in a half bridge configuration., an atx psu will have another transformer to supply the 5volts standby voltage Vsb. It is the chopper transformer feeding the 5/12 volts rectifiers that we are after....



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i've pulled enough computer power supplies apart to know that it's unlikely you'll find a transformer/toroidal inside worth using for an amp
true again without modification, but still you can get qet least 24volts out of a pc psu by modding the -12volts rectifiers to have equal amp rating as that of the +12volt rails......[
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