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Everything Else => General Support and Discussion => Zaurus General Forums => Archived Forums => Accessories => Topic started by: jan on March 07, 2006, 05:45:20 am

Title: Is 5.15v Dc (idle) Safe?
Post by: jan on March 07, 2006, 05:45:20 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".
Title: Is 5.15v Dc (idle) Safe?
Post by: omega on March 07, 2006, 08:14:45 am
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!
Title: Is 5.15v Dc (idle) Safe?
Post by: jan on March 07, 2006, 03:29:07 pm
Quote
BTW, your multimeter probably has a few percent error!
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Sure. Thanks for your reply.
Title: Is 5.15v Dc (idle) Safe?
Post by: hobbified on May 18, 2006, 07:02:23 pm
Quote
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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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.
Title: Is 5.15v Dc (idle) Safe?
Post by: bam on May 18, 2006, 10:22:27 pm
without a load, probably just fine...whats it measure with a load?
Title: Is 5.15v Dc (idle) Safe?
Post by: chyang on May 20, 2006, 07:05:58 pm
My measurement over my previous SL5500 power adapter is 5.18V without load, so it may be Ok.