Wire hunt.

[itsmoked]

Would you guys point me to a source for magnet wire. I need,(GAHW&^%!!) 13AWG to wrap a switcher toroid.

I only need 10 feet for protos not a $600 roll.

Suggestions?

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[geekEE]

I see 50-ft rolls of 12 AWG magnet wire for $25 on ebay.

 

[sreid]

Try MWS.

http://www.mwswire.com/

They are good about sending samples or supplying small rolls.

A suggestion; four conductors of 19 gage wire is easier to wind than 13 ga. Also less resistance increase due to skin effect.

 

[zappedagain]

Hmm, that's a tricky one. I like Belden because you can get a 0.5lb or 1.0lb spool that isn't too long (page 3.25 of their catalog). Unfortunately they only go up to 14AWG.

http://www.belden.com/pdfs/03Belden_Master_Catalog/03HookUp_Lead_Wire/03HookUp_Lead_Wire.pdf

You can get a half pound spool of 18AWG and it only has 100 feet (you'll need 40 feet per sreid's suggestion).

 

[itsmoked]

Thanks!

sreid; This is a switcher inductor wrapped on a 1" dia toroid that will run around 125kHz. I need like 28 turns. Still recommend 4 - 19s? I look at MWS(wow) they have a bazillion types of insulator. I will try to keep this thing in the - under 90C range. What would you suggest?

zapped; With sreids suggestion I could now probably get 19AWG anywhere [Beldon],(if it doesn't suffer from odd-number rarity disorder like 13AWG).

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com

 

[sreid]

I tend to use 180 C insulation. Solderable is usually nice; strip and tin with a soldering iron.

You can wind with 13 ga wire but your fingers will be sore. It's a disaster in production. And skin depth is shallow at 125 kHz.