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Old 6th October 2005, 08:01 PM   #1
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Default Cheap 24v SMPS - advice needed

Nuuk may be able to help here - I've found some 24v positive SMPSs for about 10 each. May be able to get some more if there's any interest. I've tested the output earth and can see no connection between it and the mains earth or chassis. Are there any other tests I might try before tying two together to make a split psu : 24/0/-24 ?
They are Power-One MAP55-1024 @ 2.5A.
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Old 6th October 2005, 08:33 PM   #2
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Default Update

- Power-One have very kindly replied to an email and said that the output earth is floating.
Anyone want some?
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Old 9th October 2005, 12:43 PM   #3
Leolabs is offline Leolabs  Malaysia
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Cant do much with only 2.5A
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Old 9th October 2005, 02:18 PM   #4
Nuuk is offline Nuuk  United Kingdom
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Quote:
Cant do much with only 2.5A
Sort of agree although I have run a GC (both channels) off one of the 8080 modules (+12 volts/6A and -12 volts/1A). But you will need efficient speakers!
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Old 11th October 2005, 09:05 PM   #5
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Wouldnt I have a total of 5 amps with 2 supplies in parallel?
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Old 11th October 2005, 09:14 PM   #6
Nuuk is offline Nuuk  United Kingdom
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Wouldnt I have a total of 5 amps with 2 supplies in parallel?
I believe so! I have not run mine in parallel though!
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Old 12th October 2005, 01:30 AM   #7
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Power-One had the misfortune of orienting a large part of their business towards Cisco in the late days of the internet bubble. As a result their stuff remains comparatively cheap. They make very good supplies.
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Old 12th October 2005, 02:06 AM   #8
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Don't forget, you can't just run any two arbitrary SMPS in parallel. FWII, there are usually synchronization issues.

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Old 12th October 2005, 08:21 AM   #9
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don parallel two psu,there are compatibility issues that need to be addressed.
during low of one there can be high of other frying up whole of the system.so don,t do it in any case.serious warning
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Old 12th October 2005, 02:25 PM   #10
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Originally posted by sagarverma
don parallel two psu,there are compatibility issues that need to be addressed.
during low of one there can be high of other frying up whole of the system.so don,t do it in any case.serious warning
Thanks for that - I'll give them a go in series anyway, just for the hell of it.
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