Electronics → Re: Fire hazards lurking about.

Yes, Plus a couple of "Flameproof" resistors...

At least the Power Supply ITSELF shouldn't pose a Fire hazard (unlike the Power Cord... )

However, Don't expect much more for the price, though...

-Tursiops_G.

Well, I've seen worst in terms of ripple.

Voltage fluctuations though are pretty big. Revving up a CD-ROM drive it goes as low as 11.65V and once the drive is up to speed the power supply overshoots to as high as 12.32V. Definitely not within ATX specifications.

Edit: oops, those spikes in the scope capture are bigger than I thought. I forgot to set the scope to X10 since I'm using a X10 probe. So those spikes are actually on average 487mV not 48.7mV

That's about Typical for such a Cheap SMPS...

Perhaps adding a simple 'PI' L/C Filter may help...

(Edit): How does the +5V rail look?

-Tursiops_G.

quote:

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At least it has a fuse

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Are slow-burn fuses even right for that? I'm trying to remember and it's been 8+ years since I've done anything in this area, but at the time CSA wouldn't allow slowburns in our electronics for stepdowns, they had to be fast. Didn't matter if it was 100-125 to 220-240 or inverted. Always had to be fast-blo.