1. Calculate inductance. http://www.oz.net/~coilgun/mark2/inductorsim.htm#trouble
2. Make a bobbin.
3. Wind a little more than necessary, measure and cut wire.
2. Make a bobbin.
3. Wind a little more than necessary, measure and cut wire.
noodle_snacks said:
Hi Noodle Snacks,
Don't worry. There is no such thing as a dumb question. Just occasional dumb answers from over-smart people.
If everyone was supposed to know everything from the beginning, there would not be a way to ask, and the forum wouldn't be what it is.
We all start somewhere, and we're here to learn and share knowledge.
(Hey, isn't that what life is all about...?
)Cheers,
Jennice
noodle_snacks said:
Go to your local electric motor rewinders, and ask them to run off a little winding wire onto a spool - cheapest way to get it, as they buy it in LARGE quantities. This wire is solid copper with enamel coating. For reasonably high power handling and low resistance, 1mm or 1.25mm wire is good for series inductors, and you can go down to 0.8mm for shunt inductors.
Cheers
Graeme
Hmmmm I was searching for this today myself, found two sources here in Sydney searching yellow pages with "magnet wire" but hobart (or tasmania for that matter) draws a blank, as does motor rewinders....
if you are doing really small value coils you could get away with some enamelled copper wire from jaycar or DSE, but the length they sell it in is too short for bigger coils.
Tony.
if you are doing really small value coils you could get away with some enamelled copper wire from jaycar or DSE, but the length they sell it in is too short for bigger coils.
Tony.
The local motor rewinders here buy the wire in 10 or 20kg reels. I have a couple of small reels and just ask them to "fill it up", which they do on their lathe - they charge based on the weight, which ends up MUCH cheaper than the Dick Smith / Jaycar option.
For Hobart, a Yellow Pages search brought up Star Electric, 13 Sunderland St, Derwent Park 7009
Cheers
Graeme
For Hobart, a Yellow Pages search brought up Star Electric, 13 Sunderland St, Derwent Park 7009
Cheers
Graeme
Try drop theese guys a line, they may be able to tell you where you can get Synflex products in Australia info@synflex.de
Magnet wire is not just magnet wire. The difference in quality between the best and the worst is huge. Synflex provides top quality for a fair price. Since you need so little of it, I would not bother with anything else.
Winding inductors is very hard on the coating, and it gets even worse when handling the inductors after winding without coating them, so go for the best quality you can possibly find if Synflex draws blank in Australia.
Magura
Magnet wire is not just magnet wire. The difference in quality between the best and the worst is huge. Synflex provides top quality for a fair price. Since you need so little of it, I would not bother with anything else.
Winding inductors is very hard on the coating, and it gets even worse when handling the inductors after winding without coating them, so go for the best quality you can possibly find if Synflex draws blank in Australia.
Magura
Ok, After going to a few electrical wiring and other cable shops i went to the star electric place, where i did meet some success, I managed to get 2 kilos of 1.32mm wire for $AU16.
Now i have to actually wind the things. Any suggestions as for what to use as a bobbin and is there any specific way i have to wind them (eg can i just set up a jig to rotate the bobbin and move the wire back and forth or do i need to go back to the opposing side each layer?)
Now i have to actually wind the things. Any suggestions as for what to use as a bobbin and is there any specific way i have to wind them (eg can i just set up a jig to rotate the bobbin and move the wire back and forth or do i need to go back to the opposing side each layer?)
Thanks everyone, using speaker workshop to measure them and get them exact i have managed to make two 0.47mh and one 1mh inductor so far with what seems like success. I still have a few more to make for my inital crossovers to try and i will have plenty of wire left afterwards for other xos. I have made a huge saving over buying inductors, except for the time required to wind them
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