i need transformers

[Gaston]

anyone know where i can purchase a bunch of transformers for a good deal? im looking for 120v primary 24volt secondary at 2 to 3 amps. i need about twenty or more. or a good deal on more amperage and i can share the voltage. i need to make a bunch of audio amplifiers

 

[mneary]

How's $4.99 for 24V 2A?

Or, $17.99 for 24V 10A?

 

[Gaston]

that is perfect.i have been searching for days but couldn't fin d anything under $12. thanks

 

[Hero999]

You don't want to parallel the outputs do you?

It's more efficient to use one large transformer than several smaller transformers connected in parallel.

 

[Gaston]

no acually i am using one for the positive swing and one for the negative swing. for 48 volt pp rms

 

[mneary]

I found an even cheaper transformer at electronic goldmine, stock no. G12951. It has an extra winding, but you can ignore it for $2.98.

 

[Gaston]

i saw that one at goldmine but from looking at the output leads the amperage must be a typo.

 

[Leftyretro]

i saw that one at goldmine but from looking at the output leads the amperage must be a typo.

That was my first impression also, looks too small of guage for 2 amps continous, but sometimes pictures can be deceiving

Lefty

 

[Gaston]

has anyone purchased one of these from goldmine?

 

[Hero999]

no acually i am using one for the positive swing and one for the negative swing. for 48 volt pp rms

Why not use a centre tapped 48V transformer?

 

[Gaston]

i would use 48v center tapped if i could find some for cheap. im just on a shoestring budget

 

[mneary]

Are trying to get +/- 32 volts? There are many ways to do this.

The goldmine transformers don't look to me like the wire is too thin; unlike some transformers the wires are solid not stranded, and the insulation is thin.

 

[things]

That was my first impression also, looks too small of guage for 2 amps continous, but sometimes pictures can be deceiving

Lefty

well that's the same for peltier devices, they put tiny little wires on something that can pull about 4-20 amps

 

[Gaston]

Are trying to get +/- 32 volts? There are many ways to do this.

i am open for suggestions

 

[Hero999]

Yes, what exactly are you trying to do?

A single 24V-0-24V transformer is likely to be much cheaper than two 24V transformers. You could also consider a transformer with two 24V secondaries or just buy a pre-built switching power supply.

 

[Gaston]

im building audio amplifiers and need a positve and negative voltage. i can't find any good deals on 48 volt center tapped transformers. it looks like i can get the 24 volts at a good price though. a premade switcher would be nice but that would probably be the most expensive alternative.

 

[Hero999]

Do any of those 24V transformers have twin secondaries by any chance?

Transformers with twin secondaries are very common.