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Author Topic: curious case of the shuddering power supply...  (Read 1998 times)

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Offline SArepairmanTopic starter

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curious case of the shuddering power supply...
« on: August 01, 2013, 11:18:10 pm »
http://www.ebay.com/itm/HP-Agilent-Harrison-6268A-Rack-Mount-DC-Power-Supply-0-40VDC-0-30-Amps-PARTS-2-/111131332684?pt=LH_DefaultDomain_0&hash=item19dff1904c

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What the hell could cause a power supply to shudder? I imagine that means it vibrated in a fierce manner.  :-DD
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Offline ElectroIrradiator

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Re: curious case of the shuddering power supply...
« Reply #1 on: August 01, 2013, 11:49:26 pm »
Quote from: SArepairman on August 01, 2013, 11:18:10 pm
What the hell could cause a power supply to shudder? I imagine that means it vibrated in a fierce manner.  :-DD

Current surge, like due to a huge short (and having nails instead of fuses). You sometimes see this during power-up in PSUs with huge filter caps, if the design lacks inrush current protection. See large class A audio amps with passive PSUs. :D
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