/diy/ - Do It Yourself

>>436198

It's called a Transformer.

You can bring line voltage down to a lower voltage.

If you have a multimeter I'd find out what voltage (120v to 32v or whatever)

But it doesn't sound like you know what you're doing.

Put them on Ebay.

make a arc welder.
http://www.instructables.com/id/Build-a-Microwave-Transformer-Homemade-Welder/
you don't even need to tear apart any microwaves!

>>436198
Just wondering if I can still use the transformer if I ripped off that "black tape over the coil"? It was due to my curiosity.

>>436216
he doesn't even know what a transformer is...what the hell is he going to do with an arc welder?

ebay or scrapyard, or ship them to me, I have a project in mind....

>>436220

what kind of project?

>>436221
jacob's ladder, tesla coils, that kind of stuff.

all depends on the type of transformer, got any nameplates on those puppies? Most industrial transformers have a nameplate (though they do suffer from heat and years of wear)

>>436226
I'd have to check the nameplate in the morning... sorry

>>436228
no problem, but that will tell us what we are dealing with here.

>>436226

nameplate

>>436440
OK, so you're looking at a 440 to 101 volt step down transformer rated at 550 VA (which is essentially watts in this case) and it works with either 50 or 60 Hertz frequency. I'll be back later with more details, my children are killing each other and I must stop them....

>>436609

440 single phase? weird

440 to 101 ratio even weirder
550VA is a fairly beefy transformer in the home

>>436614
My guess it that it was used in a control panel of some sort such as a 3 phase motor control circuit, this is the type of thing you see that runs off of a power circuit (3 phase, but typically only wired to L1 and L3) in order to provide power to the control circuit (which can be any voltage that your control components are rated for). You will notice that both sides are multi-tapped, so that means that the voltages on either side can be split at various points.

What did these come out of OP?

>>436638

from an old elevator. they were in a crate of garbage in a parking garage where they are renovating the elevators. it was sitting next to the dumpsters, but when the other posted me to ebay them I looked it up, apparently they're worth money. I think whoever was working on the elevator was saving them for themselves /=

>>436655
OK, so they are the control transformers from elevator motors, I'm betting they're pretty heavy.

I am attaching a motor control diagram so you can get an idea of how these are wired in a circuit. You will notice in the diagram that there is a jumper wire from H3 to H2 , which makes a series connection of the main coil. The secondary coil only has X1 and X2 in this case to supply 120 volts to the control circuit. Since yours is multi tapped (X1, X2, X3, X4) it can be wired in series or parallel to get various induced voltages on the control side.

The question you really need to know about selling these is do they still work? That's going to make the difference between scrap price and component price. Otherwise, they make great paper weights

>>436658
OK so then I forgot the damn diagram..oops.

Here it is.

>>436658

is this the sort of thing that would work for
>jacob's ladder, tesla coils, that kind of stuff

>>436666
Nope, but great for control circuits if they all have continuity. The added two taps on the secondary make it pretty easy to adjust to a wide variety of circuits. Do you own a multimeter, megger, continuity tester, etc? you could always build a simple test light to check them. Establishing that the coils have continuity will help you sell them. If the varnish is damaged and there are any internal shorts, then they are scrap (but these puppies have tons of copper in them and copper pays fairly well in the scrap market)

>>436198
OP has a transformer
if OP obtains energon...

I made a cattle prod out of one once, along with other supplies obviously :)

On other boards I would have said now you should build an electric chair with it and kill yourself for your ignorance OP. But since we are all nice people on /diy/ I will encourage you to learn something. Read this OP, it will give you a basic Idea of what this is.

http://en.wikipedia.org/wiki/Transformer#Basic_principles

>>437004
I think there's a difference between being ignorant and not wanting to learn, and not knowing something but coming to an open forum to ask questions and gain new knowledge.

440 is a standard voltage used in shipboard supply circuits, or at least it is for the US navy. Those would appear to be step-down transformers for control switchgear, and likely from the 60's-70's.

>>437066
OP identified that they came from elevator controls
>>436655