Multifilar winding

Tyimo · 13th July 2009, 01:16 PM

Hi!
I know that bi- or trifilar winding gives the best coupling in transformers.
It lowers the leakage inductance (and raises the primary-to-secondary winding-to-winding capacitance, which can be a bad thing....). etc.
Could somebody tell me what is the limit until we can use multifilar windings? I know if the coil has few turns it is good, but what is with more turns? How can I calculate it?

Greets:

Tyimo

Sheldon · 13th July 2009, 05:03 PM

You might be able to get an idea by playing with this: http://www.dissident-audio.com/OPT_da/Page.html

Try setting the inter layer insulation thickness to a very small value (0.0001) and interleaving as much as you can. I think the limit is 9 layers, but you can see how the inter winding capacitance increases.

Sheldon

Tyimo · 13th July 2009, 05:31 PM

Thanks Sheldon!

Quote:

Try setting the inter layer insulation thickness to a very small value (0.0001) and interleaving as much as you can.

I thought on this already...

Tyimo

accusol · 29th March 2010, 04:32 PM

Tyimo, can you use multifilar wire now?

13th July 2009, 01:16 PM	#1
Tyimo diyAudio Member Join Date: Nov 2002 Location: Hungary	Multifilar winding Hi! I know that bi- or trifilar winding gives the best coupling in transformers. It lowers the leakage inductance (and raises the primary-to-secondary winding-to-winding capacitance, which can be a bad thing....). etc. Could somebody tell me what is the limit until we can use multifilar windings? I know if the coil has few turns it is good, but what is with more turns? How can I calculate it? Greets: Tyimo

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
winding TVC?	neskor	Analog Line Level	3	3rd June 2008 08:18 PM
winding the primary	m-tech	Power Supplies	24	30th November 2007 10:29 AM
winding a toroidal	mbates14	Power Supplies	16	10th November 2007 03:16 PM
wanted: multifilar magnet wire	extremy	Swap Meet	7	4th March 2006 05:30 PM
OPT winding orientation	MlinarS	Tubes / Valves	2	29th April 2005 08:30 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read

13th July 2009, 05:03 PM	#2
Sheldon diyAudio Member Join Date: Dec 2003 Location: San Diego	You might be able to get an idea by playing with this: http://www.dissident-audio.com/OPT_da/Page.html Try setting the inter layer insulation thickness to a very small value (0.0001) and interleaving as much as you can. I think the limit is 9 layers, but you can see how the inter winding capacitance increases. Sheldon

29th March 2010, 04:32 PM	#4
accusol diyAudio Member Join Date: Mar 2010	Tyimo, can you use multifilar wire now?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)