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› ATX power supply fluctuations
05-14-2011 11:26 PM  7 years agoPost 1
Diego

rrApprentice

Oviedo or Cartagena, Spain

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Hi guys,

My regular ATX PSU died after about ten years, i wired a new one today but i´m having a weird problem. For the load i used the same 12V bulb i had on the other one but this time it´s pulsating regularly about 3 times a second, also the 12V is fluctuating down by up to 0.5V it does not keep a constant voltage while loaded or unloaded.

any ideas?

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05-20-2011 10:21 PM  7 years agoPost 2
write2dgray

rrApprentice

Seattle, WA

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I've found that some converted power supplies require a slightly larger load for stable operation, you may try adding a second bulb or a larger resistor load.

More wagging, less barking

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05-21-2011 10:23 AM  7 years agoPost 3
Diego

rrApprentice

Oviedo or Cartagena, Spain

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Thanks,
I´ll try that.

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