looking for a transformer

[docb]

I'm looking for a physically small raw AC transformer. 120vac in, 24vac out.
Max size under an inch.

Any suggestions for brand names?

 

[davenn]

you probably wont do it for that size limit
what current @ 24V do you need ?

 

[docb]

Maybe 500mA or a bit more..

 

[davenn]

yup ok, that just makes it more unlikely

you could try checking out mouser or digikey ... ya never know your luck

cheers
Dave

 

[Colin Mitchell]

12VA Transformer weighs 500gm

 

[docb]

Well it could possibly be a little bigger.

 

[KrisBlueNZ]

Well did you look on Mouser and Digi-Key as Dave suggested in post #4?

http://www.mouser.com
http://www.digikey.com

 

[(*steve*)]

The density of iron is 7g/cc, the density of copper is 9g/cc

Let's assume that the average density is 7g/cc (using square section copper and as many tricks as we can manage to reduce the volume of anything other than iron or copper in the transformer).

Assuming a weight of 500g, that means the volume will be at least 72cc. That's about 4.5 cubic inches, so you'll never find anything less than about 1.7 inches per side (assuming it's cubic)

 

[(*steve*)]

Those calculations work out remarkably accurately, with a single exception (that's not stocked)

here

 

[KMoffett]

Google: miniature power transformers
Lots of manufacturers

Ken