I found one of these many years ago. Mine is the EMS 13 90 version 0 to 13 volts and 0 to 90 amps controlled. It draws 15 amps off the wall socket like this so it needs its own 110 circuit if driven to full power. The pic is the 40 25 model but they look the same just different outputs as stated in the name. I have knocked a circuit breaker open with this one so its advisable to have its own 110 circuit. Works like a champ though. IIRC I only paid about $150.00 for this shipped. They sell for $450.00 and up to $700.00 though. Pricey but has been very reliable, and single rack mount size makes it fit the bench nicely. They do have a cooling fan inside them that can be a bit noisy as it seems to have one speed full on. But nothings perfect and I can live with the fan noise issue...
PS By the way these are stack-able so if I got one or two more I could cross connect them to get combined output if I need more power. only draw back is that each one will need its own 110 circuit breaker feed. Its a switcher, but even with high efficiency supplies there are limits to how much current a 110 VAC power circuit can deliver.
And for reference purposes a old school PPI art series A600.2 will draw about 80 to 81 amps if driven just below clipping into 4 ohms mono or 2 ohms stereo, so this size supply is only good for about 600 to 700 watts Class AB amps, and about 900 watts Class D amps. After that you will likely need bigger wall power to accommodate anything larger power wise.
PS By the way these are stack-able so if I got one or two more I could cross connect them to get combined output if I need more power. only draw back is that each one will need its own 110 circuit breaker feed. Its a switcher, but even with high efficiency supplies there are limits to how much current a 110 VAC power circuit can deliver.
And for reference purposes a old school PPI art series A600.2 will draw about 80 to 81 amps if driven just below clipping into 4 ohms mono or 2 ohms stereo, so this size supply is only good for about 600 to 700 watts Class AB amps, and about 900 watts Class D amps. After that you will likely need bigger wall power to accommodate anything larger power wise.
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Found out, that this topic have very informative content.
Well, i found on ebay DELL AA24150L server power supply, it has 175a on 12v rail!
Dell MJ046 2100W Power Supply for PowerEdge 1855 1955 Enclosure | eBay
Would this PSU be good for testing larger amps?
Well, i found on ebay DELL AA24150L server power supply, it has 175a on 12v rail!
Dell MJ046 2100W Power Supply for PowerEdge 1855 1955 Enclosure | eBay
Would this PSU be good for testing larger amps?
I know this thread is pretty much back from the dead but there are lots of options for bench power supplies and most of us diyers should be more than capable of converting some of them. I have scanned the threads a little bit and haven't seen much here so here is some excellent info.
A simple high quality 12Volt 100Amp Power Supply- Part1 - RC Groups
How to convert Server Power Supplies - RC Groups
Most of these server power supplies can be had for $10-$20 shipped each.
Enjoy!
A simple high quality 12Volt 100Amp Power Supply- Part1 - RC Groups
How to convert Server Power Supplies - RC Groups
Most of these server power supplies can be had for $10-$20 shipped each.
Enjoy!
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