Is 12v OK when I have 13v?

[Pete P]

I needed to get a new PS for my LCD, and the old one was 12v 4a... so I got a 13v 4a at a local flea market cheap, and I wanted to make sure it works before I plug it in. Will I need to put a diode in it and step it down a volt, or should it be OK?

[Pete P]

Anybody??? Please???

[Gary Warner]

Is this 'like' a computer problem?

Sorry, if it doesn't have wings, I don't have a clue....

Gary
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[Pete P]

Hehe just an electronics/voltage question.

[ElectroLawndart]

Pete,

You should be fine. Most elelctronics are designed to have a tolerance of at least 10%. as caps and resistors tend to vary from their labeled values with temperature and time.

Dart

[Gary Warner]

I get it now... it was late last night.

Check polarity and AC/DC are matched. If the same, it'll be OK.

Gary
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[Danny Troy]

I agree with Gary. 13v should be fine. Just make sure it's DC if you need DC. My Sony laptop I believe uses AC input.

Danny

[Pete P]

I'm going to need a rectifier anyway, I didn't notice it was AC :-( I knew somehting was wrong... the big A adaptors are usually not wall warts :-P Darn! Oh well, I guess the rectifier will add all the volts/amps I need, I'll give it a 5A job with some big caps. I dont even kno if it's worth it... it'; snot for me so if I mess up..... yeah :-P

[Warske]

...I guess the rectifier will add all the volts/amps I need, I'll give it a 5A job with some big caps. If you had 13 v AC your rectifier and caps should give you more than 18 v DC, of course.