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Old 2nd November 2005, 09:34 AM   #1
Lostcause is offline Lostcause  United Kingdom
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Anyone know where (in the UK) to get solid 1mm silver wire with insulation suitable for winding some 'small' torroids?
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Old 2nd November 2005, 09:54 AM   #2
jacco vermeulen is offline jacco vermeulen  Netherlands
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Old 2nd November 2005, 10:02 AM   #3
Lostcause is offline Lostcause  United Kingdom
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Old 3rd November 2005, 01:50 AM   #4
eeka chu is offline eeka chu  United Kingdom
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I'm in the UK as well so I'd be interested to hear what you're up to or how you get on.

I've been busy with coiling electromagnetic pickups and such. I had a stack of links to wire manufacturers and was talking to a lot of them about buying spools of silver wire. But I can't seem to find them in my favourite now (list is gigantic now, needs major cleaning).

I know that Hi-Fi Collective sell plated and solid silver wires but the solid wires are pretty expensive. Their 99.9% pure 1mm solid silver wire is about ten pounds per meter without vat.

Also, there seem to be a lot more manufacturers outside the UK than there are in it. Might be worth paying a bit more in postage for wider choice and a lower price per meter.

Maybe you could get away with using lower purity wires in the power transformers, like 99% or plated, to save some cash. I'm assuming you're thinking of winding power transformers but perhaps not.

According to Wiretron you could get about 7.75 amps through a 1mm (18AWG) copper wire safely. I think pure silver is about 8% more conductive, go with 7 for safety. Which should mean a 1mm pure silver wire could carry ~8.29 amps safely and continuously at a rough guess. Obviously, inrush current is only going to heat the wire for a second or two so if you have an inrush at 8 amps I expect it would be fine.

After messing around trying to wind thousands of turns of 38 - 40 guage wire by hand onto tiny bobbins and then creating layers within those bobbins, 1mm onto a toroid would be relaxation by comparison!
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