 Is 5.15v Dc (idle) Safe?, hama universal switch mode power supply |
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 Mar 7 2006, 02:45 AM
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#1
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Group: Members Posts: 88 Joined: 10-February 06 Member No.: 9,115  |
Hi all,
bought an AC adapter. Asked the (clueless) vendor whether 5V meant 5.00V+-0 or something else. Vendor said, sure it's exactly 5 volts. Now I got it and my voltmeter says 5.15V. Rumor has it that anything <5.3V is safe but the adapter wasn't too expensive and I'm afraid that loaded it could have voltage peaks. Any hints. It's rated 2.5A @ 5V ("stabilized"). The product is called "Electronic 2.5". |
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Mar 7 2006, 05:14 AM
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#2
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Group: Members Posts: 626 Joined: 13-April 04 From: Ireland Member No.: 2,825 |
Sounds grand (Electronics Engineer). I wouldn't hesitate - it's well within 5%.... and better higher than lower, to make sure it charges the battery properly...
BTW, your multimeter probably has a few percent error! |
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Mar 7 2006, 12:29 PM
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#3
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Group: Members Posts: 88 Joined: 10-February 06 Member No.: 9,115 |
QUOTE(omega @ Mar 7 2006, 03:14 PM) BTW, your multimeter probably has a few percent error!  Sure. Thanks for your reply. |
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May 18 2006, 03:02 PM
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#4
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Group: Members Posts: 4 Joined: 15-May 06 Member No.: 9,870 |
QUOTE(jan @ Mar 7 2006, 05:45 AM) Hi all, bought an AC adapter. Asked the (clueless) vendor whether 5V meant 5.00V+-0 or something else. Vendor said, sure it's exactly 5 volts. Now I got it and my voltmeter says 5.15V. Rumor has it that anything <5.3V is safe but the adapter wasn't too expensive and I'm afraid that loaded it could have voltage peaks. Any hints. It's rated 2.5A @ 5V ("stabilized"). The product is called "Electronic 2.5". If you're measuring the voltage across a switching power supply with no load, the only voltage you'll never see is the one it's rated for. Usually it's high; I'm surprised that you saw 5.15 volts on the line, rather than 5.5 or 6. In any case, you should be just fine; my Zaurus (collie) is perfectly happy on 5-6 V. |
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May 18 2006, 06:22 PM
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#5
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 Group: Members Posts: 1,213 Joined: 9-June 05 From: Gobi Desert, Mongolia Member No.: 7,306 |
without a load, probably just fine...whats it measure with a load?
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May 20 2006, 03:05 PM
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#6
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 Group: Members Posts: 271 Joined: 19-June 03 From: Beijing,China Member No.: 156 |
My measurement over my previous SL5500 power adapter is 5.18V without load, so it may be Ok.
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