Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


How to make transformer bobbins?

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#85299

How to make transformer bobbins? | 24 July, 2020

I often need to wind a coil for transformers, solenoids, or chokes, & I typically use craft plywood for the ends and a paper tube for the center, cemented with wood glue, or Cyanoacrylate . Then, I usually give it a coat of varnish or epoxy. I am curious what other people are doing in the way of DIY formers. I've tried various plastics, but all that I have tried have been impossible to glue securely.

For rigidity, I want to try thin pcb materieal, something without copper (obviously), or holes, but don't know what it is called. Is such a thing available? What's the term for PCB material without copper, or holes?

What do you folks do when you need custom formers?

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#85338

How to make transformer bobbins? | 29 July, 2020

Look on the net for Paxolin or SRBP P1

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#85340

How to make transformer bobbins? | 29 July, 2020

You're asking about unclad FR4 [G10 is not flame retardant] Just ask for 0/0 unclad FR4. Thicknesses: 0.010", 0.020", 0.031", 0.047", 0.059" 0.090" & 0.118"

"What do you folks do when you need custom formers?" Call Butler Winding [I receive no benefit or compensation from BW]

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