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RE: Old PC PSU as power supply for VFD
- Subject: RE: Old PC PSU as power supply for VFD
- From: "Des Gibbons" <des@xxxxxxxxxxxx>
- Date: Mon, 12 Apr 2004 22:55:13 +0100
> -----Original Message-----
> From: Phil Harris [mailto:phil@xxxxxxx]
>
> > The 5v standby circuit is not designed to supply a large
> > current, also, the fan is not running when the psu is in
> > standby mode, double check what current you can safely draw
> > from the 5v standby circuit to keep in-spec.
> >
> > My gut feeling is that you should have no problem, although I
> > have seen some vfd's that draw nearly an amp ;)
>
> PC PSU should be able to supply more than that in standby anyway
> as I think
> there's a 720mA @ 5v allowance for Wake On LAN, a 1,000mA
> allowance for wake
> on USB and a 720mA allowance for wake on modem...
>
> ...I'm sure I remember something about that in the manual for the
> last mobo
> I bought.
It is entirely psu dependant, most modern beefy psu's will supply 2.0 amp
sustained, 2.5amp max. on the +5VSB
Older psu's, well if you can check the maximum current, do, if you can't,
errr find a psu you can check ;)
Cheers, Des.
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