more equations, love it
Nasa have some seriously good publications online about pretty much anything electrical.
Nasa have some seriously good publications online about pretty much anything electrical.
Can I joint Magnet wire for winding transformer if magnet wire get shortage. What precaution I have to take during winding.Is any loss on voltage or current, can that joint heat up. Please help
Yes, you can join your wire.
Beware that the wires vibrate and could wear through insulation.
At the least double insulate the joint.
The "bulge" at the joint could be accommodated on the outer edge with little downside.
Don't put a "bulge" on the top or bottom.
The inner of the core is where the most copper must be placed and space is at a premium. Don't waste that space.
Beware that the wires vibrate and could wear through insulation.
At the least double insulate the joint.
The "bulge" at the joint could be accommodated on the outer edge with little downside.
Don't put a "bulge" on the top or bottom.
The inner of the core is where the most copper must be placed and space is at a premium. Don't waste that space.
locate the joint so that it does not land at the edges,
slip a heat shrink tube over the joint when done...
get yourself a plastic. or rubber mallet to shape up the
windings, do not hit the wires strongly, use gentle force just enough....
Attachments
Thanks
AndrewT & AJT
I think I must use same gauge magnet wire for joining together.What's yours though
AndrewT & AJT
I think I must use same gauge magnet wire for joining together.What's yours though
by edges, mean the corner edges, better at the sides either inside or out,
also do not put joints at the bottom or at the top where it can be subjected
to mechanical stresses...
also do not put joints at the bottom or at the top where it can be subjected
to mechanical stresses...
Hello Andrew T and Tony
Can I use this cotton taps for insulation between primary and secondary winding on toroidal core.Tape don't have any adhesive.
Can I use this cotton taps for insulation between primary and secondary winding on toroidal core.Tape don't have any adhesive.
Attachments
Last edited:
You don't want adhesive on the insulation tape. Adhesive makes installation almost impossible with the long unbroken tape that needs to be wrapped around.
I would think that there is too much air in a cotton tape. That air will be an effective thermal insulator and make the transformer run hot.
I would think that there is too much air in a cotton tape. That air will be an effective thermal insulator and make the transformer run hot.
sure you can use cotton tape. go ahead and do it...
have used it on a toroid i did more than 20 years ago, the amp it was used in still lives...
Which tapes I have to use for insulation between primary & secondary Can you suggest some.
i use 1/2 inch wide cotton tapes, you can use high temp tapes if you have them, i used the ordinary type cotton tapes...
this is the toroid done by Joel using cotton tapes....
An externally hosted image should be here but it was not working when we last tested it.
do not be too concerned, only those who have not used cotton tapes will worry...
Why I would be be careful using cotton as a toroid tape:
https://www.youtube.com/watch?annot...vbHn9y16X1d&src_vid=SkWJdWGdgaM&v=8Makaciz3Xc
https://www.youtube.com/watch?annot...vbHn9y16X1d&src_vid=SkWJdWGdgaM&v=8Makaciz3Xc
is he making a toroid or a charcoals?
i do not see how a torroid traffo can have a temperature in the 400*C range...
the only way for higher temperature rise is by severely overloading the traffo
at which time the fusses would have blown....
cotton tapes are used in motors that can have temperatures in the 100*C...
i do not see how a torroid traffo can have a temperature in the 400*C range...
the only way for higher temperature rise is by severely overloading the traffo
at which time the fusses would have blown....
cotton tapes are used in motors that can have temperatures in the 100*C...
Toroidal transformer
Hello AndrewT & Tony
Finally Done primary winding today of my toroidal core.Attach photo of transformer below. 755 round of 0.914 mm magnet wire. core size before winding OD-100mm, ID-60mm, Ht-50mm (M4,CRGO) as we discuss early on this thread.Please replay soon
Hello AndrewT & Tony
Finally Done primary winding today of my toroidal core.Attach photo of transformer below. 755 round of 0.914 mm magnet wire. core size before winding OD-100mm, ID-60mm, Ht-50mm (M4,CRGO) as we discuss early on this thread.Please replay soon
