AC adaptor 18VAC 500mA

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AC adaptor 18VAC 500mA

Postby Ben M » Wed Dec 04, 2013 8:24 am

Hi folks

I've been searching for this power plug adaptor - AC to AC 18VAC 500mA. Finding it hard to find anything local to those specs...
Does anyone have one to let go of or have any knowledge of where I can buy this adaptor.

Many thanks in advance. :)
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Re: AC adaptor 18VAC 500mA

Postby jkhuri44 » Wed Dec 04, 2013 9:25 am

have you checked Element14?
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Re: AC adaptor 18VAC 500mA

Postby Ben M » Wed Dec 04, 2013 9:32 am

Yeah checked there.
Still looking...
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Re: AC adaptor 18VAC 500mA

Postby Lee Cardan » Wed Dec 04, 2013 11:05 am

Hi Ben

An AC > AC adapter is just a transformer
18VAC can be made by connecting two 9VAC windings in series
You could buy this tranformer from Jaycar, wire it up nicely in a little box and be done
http://www.jaycar.com.au/productView.asp?ID=MT2082

Just about any local tech could do this for you
I'd be happy to do it for you also and post it up, very easy and easy to do it safe. I'm back and forth to Jaycar daily as I'm right in the middle of building about 10 power supplies so slipping an extra one in there is no problem if you like. At a guess it'd cost you $60. I'm surprised a quick look on eBay gives nothing..

A cheap alternative (at the sacrifice of one volt) would be:
http://www.jaycar.com.au/productView.as ... ID=1000#12

You would need to sort out your own connector though
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Re: AC adaptor 18VAC 500mA

Postby Ben M » Wed Dec 04, 2013 1:38 pm

That's very kind of you to offer Lee.
At this stage I'm hoping that an off the shelf powerpack adaptor is available and for around $20-$30. Seriously can't believe there isn't 50 different ones available especially on the jaycar website.
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Re: AC adaptor 18VAC 500mA

Postby Futureman » Wed Dec 04, 2013 2:00 pm

I always find AC wall warts at flea markets.
Telephone related junk (modems / routers etc) all seem to have used AC.
So it doesn't take much hunting to find an appropriate AC power supply.
eBay is another option.
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Re: AC adaptor 18VAC 500mA

Postby Lee Cardan » Wed Dec 04, 2013 3:09 pm

No worries mate, yeah it's just that it's AC that there aren't many options
Plenty of overseas eBay options but I don't think that'd be a good idea :P

What's it for?

I really do think that 17VAC Jaycar one would be fine
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Re: AC adaptor 18VAC 500mA

Postby Alastair Reynolds » Wed Dec 04, 2013 10:20 pm

Check out WES components http://www.wescomponents.com.au. Very big selection and much cheaper than Jaycar.What do you need to power with it ?
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Re: AC adaptor 18VAC 500mA

Postby Kurt » Thu Dec 05, 2013 1:38 am

I got one off eBay for about $25 delivered, works fine.

Lee Cardan wrote:No worries mate, yeah it's just that it's AC that there aren't many options
Plenty of overseas eBay options but I don't think that'd be a good idea :P

What's it for?

I really do think that 17VAC Jaycar one would be fine
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Re: AC adaptor 18VAC 500mA

Postby Ben M » Thu Dec 05, 2013 9:03 am

Cool, thanks guys!
I'll keep browsing the interwebs. There's sure to be something out there that fits exactly.

:ympeace:
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Re: AC adaptor 18VAC 500mA

Postby Alastair Reynolds » Thu Dec 05, 2013 9:30 am

hey Ben, I just had a look in our bucket of obscure power supplies (We throw nothing out) and found an 18 VAC,
1.3A supply.
Send me an address and I'll drop it in the mail for you.
cheers
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Re: AC adaptor 18VAC 500mA

Postby Ben M » Thu Dec 05, 2013 9:37 am

Alastair Reynolds wrote:hey Ben, I just had a look in our bucket of obscure power supplies (We throw nothing out) and found an 18 VAC,
1.3A supply.
Send me an address and I'll drop it in the mail for you.
cheers
Alastair


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Re: AC adaptor 18VAC 500mA

Postby rob » Thu Dec 05, 2013 4:53 pm

problem solved. however next time ... Altronics sell a 16V one. And in the real world you may find 16V is sufficient as most AC plug packs voltage is not well regulated and typically you'll get 20% more to a light load.
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