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In Reply to: Re: Hi Mike... posted by mqracing on December 10, 2004 at 22:52:50:
This bobbin appears to be a Myles Platt bobbin (very good bobbins btw). Myles Platt is a European company with moreso limited availability in the US.I found them on MP's website here.
There seem to be only 2 Miles Platts distributors in the US(besides the MP Florida HQ), but whether they carry the 3-flange versions is another story, as you say.
Dexter Magnetics
Allstar MagneticsMy advice on your first try... go with the M6 laminations
Yeah, those M2 or M4 lams are so thin it's scary (makes me think of paper cuts).
too lazy to go to a website to convert 1.0mm wire to equivalent "guage" that we spec by in the states... but seeing that is has (if I read it right) 4 times 144 turns (wound quadfilar) you should be able to use 18 guage wire.
Not a bad guess! TNT Audio has a quick mm to AWG conversion table
On an EI 150 with about a 85 to 90 percent build factor you should be able to get a total of about 690 turns total. Since your new... you'll appreciate the "forgiveness" room built in... and if you look at the photo on the Zeus page the bobbin is no where near filled up...
Are you suggesting that I wind more turns or just that it is nice to have a lot of extra room on a bobbin for beginners?
If possible get at least two different color insulations (red and green) on your magnet wire
I was thinking the same thing last night. Is there an easy way to calculate the total length of wire that I'll need for each full chamber? I read on a few DIY transformer sites that you have to be careful not to run out of wire midway through.
Also, what's your thoughts on flat magnet wire? Expensive, but will it make it easier for me to get full layers? I guess the 1:2 or 1:4 width ratio would seriously affect the number of windings.
I'm still thinking through how I'm going to actually wind these things, but there are a few DIY websites with good suggestions. 144 turns could be possible with a hand crank tatoo machine coil winder like below if I can figure a way to provide constant tension on the four wire spools and a wire guide to keep things smooth:
when your done you'll need hardware, nuts, bolts, star washers, insulated washers. Bell end covers or L brackets if your going to leave them open.
Any suggestions on where to get all the hardware?
If you can get the myles platt bobbins (as shown on Zeus website) then your slots will already be there for you
Does it make any difference whether open or closed slots?
when your all said and done...it might not really be a whole lot (if any) cheaper than buying these coils ready made
I had a sinking feeling this might be true. I'll price out all the bits and pieces and if it's close(<30%), I'll just buy the pre-wound bobbins. I'll need to save a lot of money to make all the effort worthwhile.
Anyway, thanks for all the advice, I'm much closer to understanding what it really takes to wind something.
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Follow Ups
- Thanks for all the info.... - darkmoebius 00:57:38 12/12/04 (1)
- your welcome and let me know how you make out (nt) - mqracing 10:47:19 12/12/04 (0)
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