Looking for 18V 10A Transformer?

Question

I'm designing a power supply for part of a project to use to power a battery charging circuit. Does anyone know where I can find a transformer which takes 120V AC input and outputs 18V with a current rating of about 7-10A?

Answer 1

... or a bit cheaper than "Hammond"...

http://doitbest.com/Doorbells+and+Push+B...

Answer 2

Hammond Manufacturing 18V 10A transformer from Allied Electronics

http://www.alliedelec.com/Search/Product...

I think you would be lucky to get 1 amp out of the "bit cheaper" doorbell transformer. It doesn't look like a 180VA transfromer to me.

Answer 3

You should be able to find one. But the voltage is non-standard, so you may have to use a 12 v transformer is series with a 6 volt one, or 3 6 volt transformers in series.

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Answer 4

18v +/-, CT, or Dual Secondary?

If just a standard +/- Radio Shack might have one. Otherwise try Mouser.com

Dont run 3 - 6v transformers together. they will probably blow hot copper all over the place.

mobs

Answer 5

AnTek is cheaper than Hammond

http://www.antekinc.com/AN-2220.pdf

http://www.antekinc.com/AN-3218.pdf

http://www.antekinc.com/price1.html

The 20V 10A transformer will probably do just fine in your application.  The 18V 16.6A transformer will also do.

It's too bad they don't sell much in between.

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Answer 6

Current is what the circuit is going to draw