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Permalink Reply by darryl kernaghan on July 12, 2016 at 2:04pm

somewhere in that alumitone thread you'll find a post where i made a pup with just the transformer,no magnets,you just connect to the wires on the larger coil side of the tranny,and ignore the smaller side

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Permalink Reply by Jonno on July 12, 2016 at 10:59pm

.

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Permalink Reply by Rick Alexander on July 12, 2016 at 1:06pm

Hey Richard, I was in this boat a week ago. I made one that didn't work, and it hummed when I plugged it in. I resanded the ends of the coil wires, tinned them, and resoldered the leads. This time it worked without any hum. As far as the magnet polarity, I had the magnets so that they are pulling together, not repelling each other, but I don't know how important that is. 

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Permalink Reply by Jonno on July 12, 2016 at 10:45pm

Shocking Way. Shocking he he. Well I decided to do my own hand wind today.I just looked at the plastic bobbin out of ac adapter and saw the hole in it was pretty small. I got a magnet off a speaker but it was way too big.So I made a wooden bobbin from wood scrap. Bit laborious using a hand drill and rasp to make hole for a magnet (I ended up buying a few magnets. They only had some the size of half the width of the hole in my wood bobbin.)Didnt realise coil wire was so thin.I mean I read that you needed thinner winding coil and not the thicker one for a typical mag pickup. Anyways I made a start. Slow and steady. I have read some of the posts in the alumatone thread but it is as clear as mud to me. Just can't grasp the connection setup.Attached a pic of me hand winding. Gotta crawl before ya can walk

Attachments:

• diy wood bobbin wind.jpg, 1.6 MB

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Permalink Reply by Jonno on July 12, 2016 at 11:03pm

P.s Daryll K.Once you connect to thicker winding coil which has two ends to connect to, what then. This is the part I don't get. Getting from thicker winding coil to your vol/tone pot.

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Permalink Reply by darryl kernaghan on July 12, 2016 at 11:23pm

Jonno,those 2 wires effectively become your pup wires,straight to a jack if you wish,or to a vol pot if you choose,i've linked one of Ted's diagrams if that's what you need,if you don't want the tone pot as well,just ignore it and don't connect to it.B T W,different transformers have different power/response ratings,so before you wire it up permanent,it would be a good idea to temporarily hook it to a jack and try it out to be sure it's good for what you need......http://handmademusicclubhouse.com/photo/pickup-vol-tone-jack?contex...

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Permalink Reply by darryl kernaghan on July 12, 2016 at 11:35pm

This is the one i played with Jonno,the piece of tin on top was to see how it worked on a reso,you don't need it.....http://www.cigarboxnation.com/forum/topics/how-to-make-a-license-pl...

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Permalink Reply by Jonno on July 13, 2016 at 1:08am

Thanx Daryll. The pic you posted with the alligator clips I get now. At least that side. I can see some red wires on the right side of the tran core. Where are they off to?

Hooray. I finished my first hand wound pickup. Wonder if it will work.

Attachments:

• diy pup.jpg, 1.4 MB

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Permalink Reply by Jonno on July 13, 2016 at 1:22am

You mean to tell me the metal number plate replaces a pickup. Incredible. So you just have something conductive like a copper or aluminium plate and make contact with the transformer core and wire up to the thick winding coil of the trannie and just forget about the fine wire coil. Insane. God I can see now how it can be put together so quick. No more winding. No more magnets. Holy hallelujah. Get me another ac adapter pronto. Now about the trannie. Wot is best as far as ratio goes. And how can you tell? Does the stuff about input voltage/output voltage etc etc written on thr adaptor give a clue?

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Permalink Reply by darryl kernaghan on July 13, 2016 at 4:05am

1st thing Jonno,the other side of the transformer is not used,you could remove it if you want to to save weight,but some are connected internally,and you can ruin your main coil,as for the plate pick up,look at the 

'how to make an alumitone pup' thread,it's pretty long,but you'll find most of the info you need to make a simple one,there's a lot of info re what's best,and it's still being explored and changing,but some of the really simple ones work pretty good

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Permalink Reply by Jonno on July 13, 2016 at 3:13pm

G'day Daryll. Let me se if I have the physics straight. This induction thingie is a step up trannie relationship as apposed to ya more typical Step down trannie. So you have your copper or aluminium plate as a secondary coil and juxtapose that with a coil in the transformer. That right ? Now staring at a transformer in front of me I can see that the mains power side is the primary as it has more wraps of thinner wire and in this step down setup is the High voltage side. The secondary coil has the thicker wire and goes off to the appliance/gadget. Think I got that right. Now this is where the confusion starts. If the conductive plate is secondary LV and I want to step it Up. How is it connected to the primary coil in the trannie,ie how is it placed in magnetic flux relationship with a trannie coil and which coil in the trannie is used as primary, the thinner mains side HV coil or the thicker LV coil ? Or doesn't it matter which coil is used as long as the trannie is functioning as a step Up transformer. To summarize.
1.Conductive plate as secondary LV coil (how is it attached to transformer?)
2.Transformer coil functioning as primary HV coil and then out to vol pot/output jack (which coil to use? The HV coil has the sturdier end of the cut off the mains
power cord to attach to).

Got me a little hot rod cbg ready to go but no engine.

p.s my little hand wound pickup dont work.checked everything wired correctly. Not enough winds? Bwahhhhhhh!!

Permalink Reply by Ron "Oily" Sprague on July 13, 2016 at 3:50pm

Noooo, you still need a magnet. But otherwise, you get the idea, pretty much. That's why I / we came up with the idea. ;-) Timesaver.

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