Can I use a power supply with a slightly higher voltage?

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floydmeddler
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Can I use a power supply with a slightly higher voltage?

Post by floydmeddler » Sun Nov 04, 2018 9:16 pm

Hey folks,

Hope you brewers are all doing well. I rarely post these days (two young kiddies) but I'm still brewing regularly. Need it more than ever these days!

Now then... I'm upgrading one of my fermentation fridges to a meat curer. Had the whole thing up and running today then 'pop!' the dehumidifier adapter blew. :x :x I can't send it back because I cut the wire in order to get it into the fridge. It was obviously a dodgy adapter. Just my luck. Here's the dehumidifier: https://www.amazon.co.uk/gp/product/B00 ... UTF8&psc=1

So here's my question. The dehumidifier's power adapter is 10.5v and 2.8A. Would I be able to use a 12v / 3A adapter? The dehumidifier uses a peltier to do its work and I'm pretty sure they can handle a bit more than 10.5v. Plus, there's a fan in there. Maybe it's not as simple as that? So... thought I'd ask some of you lecky heads.

What do you think? Good to go or too risky?

Cheers,
Floyd ;-)

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LeeH
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Can I use a power supply with a slightly higher voltage?

Post by LeeH » Mon Nov 05, 2018 3:01 pm

Probably but you would decrease it’s service life.

What voltage does it state on the actual device itself?

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LeeH
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Can I use a power supply with a slightly higher voltage?

Post by LeeH » Mon Nov 05, 2018 3:08 pm

9 to 11 volts at 10 amps with selectable input voltage.

https://rover.ebay.com/rover/0/0/0?mpre ... 2242155284


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floydmeddler
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Re: Can I use a power supply with a slightly higher voltage?

Post by floydmeddler » Mon Nov 05, 2018 5:50 pm

Cheers Lee. Voltage is 10.5v. Hoping to get away with 12v as it’s much cheaper for me.
I might just go ahead and risk it.

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Kev888
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Re: Can I use a power supply with a slightly higher voltage?

Post by Kev888 » Mon Nov 05, 2018 6:01 pm

It seems a bit daft for it not to use 12v, so I wonder if there is a good reason? Peltiers can have some electronic control circuitry involved, so I wouldn't necessarily assume all will be well.
Kev

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