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dmg

Sun Jan 24 2010, 06:18AM

Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627

Does anyone know any good wire sources for about 1000 feet of 30 AWG wire?
asside from ordering the wire from a company, I mean that if I can get that ammount of wire by salvaging it from some appliance or device.

here is a few sources that I cannot use,
- microwave oven fans (not enough wire)
- Tv deflection coils (basicly solid from all the epoxy)
- MOT (wire too thick)
- deguassing coil (allways covered in sticky resin or not enough)
if you have any free wire sources that you can salvage and that the wire is in not bad of a condition, I would love to hear about it.

Sulaiman

Sun Jan 24 2010, 08:59AM

Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140

I am quite a scavenger myself but for a TC secondary I buy nice new wire because

it saves time that can be better spent during construction/tuning

it's a lot easier to work with a neatly wound reel

there will be no kinks or nicks

the end result will look better

in the overall cost of making a TC the secondary wire is negligible.

Check your local suppliers, eBay etc. etc.

If the cosmetics is not an issue then use all available sources, e.g.
Start at the bottom with the thicker wire, when it runs out use the next thickest etc. etc. This is a good idea as the bottom of the coil gets the highest electrical stress. Put a blob of epoxy resin over jointed areas to reduce corona/breakout.

GalliumMan

Sun Jan 24 2010, 09:55AM

Registered Member #2571 Joined: Sat Dec 26 2009, 12:02AM
Location: Aberdeenshire
Posts: 17

I agree with Sulaiman, if it's for a Tesla secondary then new wire is the best. Other good sources are Arc Welders, and Site Transformers - the 240 to 110 sort you get on building sites.

You can get new wire from Brocott - cheapest I've found. http://www.brocott.co.uk/

radiotech

Mon Jan 25 2010, 12:17AM

Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546

Certain small electric motors, small fan type, 2 pole shaded have single bobbins of un potted wire and are protected by a
thermal fuse which just opens leaving the whole fan in the junk.

When the firm I worked at shut down the motor rebuilding shop, I bid and bought the winding machines an all the wire. About 100 spools, buckets with sizes from #30 to #11 and quantities of special square wire about #6 equivalent.

Wire to rewind motors here had to have been manufactured within
2 years of use for certain ISO conditions.

dmg

Mon Jan 25 2010, 02:34AM

Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627

thanks for all your help, yeah I think i'll stop bieng a cheepo and save up for a decent spool of 30AWG, there is no wire sources were I live, (with the sole exeption to radioshack that sells overprices 100feet spools for too much money)
and there are no motor rewind shops either.
so I might order from that site if I cant find any clean wire source.

klugesmith

Mon Jan 25 2010, 04:18AM

Registered Member #2099 Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716

To see if a motor or transformer bobbin wound with AWG30 has enough for your needs, measure the resistance (you need about 100 ohms) or weight (about 0.3 lbs), according to the wire table.

Today there are a couple of ebay vendors selling 1/2 pound spools (1600 feet) for $9.99.
My search string was magnet wire (awg30,"awg 30","30 awg")

dmg

Mon Jan 25 2010, 05:11AM

Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627

I assume I will need about 1000 feet of wire, but just to be safe I think ill try out different sources and actually wind a coil with them to see how much wire I really have,

from my experience from killing transformers for thier wire, I usually have to battle with all the epoxy and laquer attached to the windings (MOTS are the worst) and usually the wire is functional, but not too estheticly pleasing, and for a TC secondary, I think i'll preffer the shining coil over the rugged entangled wire coil with bits of laquer stuck in it.

(I am winding a secondary coil with the following dimentions: 5 inch diameter by 12 inches long).

radiotech

Tue Feb 02 2010, 09:40PM

Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546

Have any of you found degaussing coils on crt tvs wound with aluminum maget wire? Or have any tcs been wound with Al?

dmg

Wed Feb 03 2010, 12:31AM

Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
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Posts: 627

well radiotech, the only place I found AL magnet wire was from certain MOTS and a really old TV,

I belive It was made by sanyo, It was one of those monster TV with the particle board back cover, the gaint CRT and a wooden frame, aside from the strange AL wire, I found an AC flyback, several parts that I have no idea what they do, some old semiconductors, capacitors, strange components that I never saw before (probably 3 times older then me) and some other discontinued junk, was a great find but I never found anymore deguassing coils with AL wire, just CU thats covered in some sticky resin and electrical tape.
(I also found a 200WVDC 680uF electrolytic capacitor, I never seen one so big in a TV set.)
and the PCBs used in the TV were not the new strait ones, but it was the one sided ones with the curved copper etching and a huge mess of wires
(I have a 1 foot by 1 by 1 cardboard box stuffed with all the wires, about 500 of them total.)
the solder was pretty hard to remove, so I guess its lead based or something.

radiotech

Wed Feb 03 2010, 05:43AM

Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546

Your description of the Sanyo / age corresponds to that degauss coil. I any became it was aluminum because dogs pulled it from storage and shredded it.When that TV was made aluminum housewire appeared. Copper had become pricey.

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