SWG 31 Copper Wire DD Coil

[paku]

hello i need help i just have SWG 31 Cooper Wire
so i need make for TGSL coil
can anyone help me calculator this size for me
The Picture Is my COIL Size
i dont know how to use coil calculator need some one explain for how many winding for SWG 31 enamel cooper wire

[Skippy]

I would suggest entering an inner radius of 81mm into the qoil qalculator. This is close to the circular equivalent of your coil. The metric equivalent to 31 SWG is 0.295mm diameter. Try and obtain an inductance of 1.03 times what you require. This is to allow for the fact your coil is a semi-circle, not round, so has approximately 97% reduction in inductance.

[paku]

im relly dont understand about this calculator bro

Inner Radius: ?
Wire Thickness: ?
Number Of Turns: ?

[Qiaozhi]

im relly dont understand about this calculator bro

Inner Radius: ?
Wire Thickness: ?
Number Of Turns: ?

The Coil Calculator is designed for circular coils. For a DD coil you need to take the average of the two radii. The easiest way to do this is to add the two diameters together and divide by 4. i.e. (200 + 110) / 4 = 77.5 mm.
The wire thickness depends on the wire you are using. In this case it's 31 SWG, which has a thickness of 0.2946 mm.
You then enter various numbers for the number of turns until you get the required inductance value.
For the TX coil I would suggest 121 turns to give 5.9mH.
For the RX coil I would suggest 126 turns to give 6.4mH

[paku]

Thanks Bro I will Try Winding It NoW!!!

[paku]

Hello Qiaozhi Have Nice Day
I Just Want To Say Thanks To You Coil Calulation That Is Very Nice suggest
Thanks so Much My Coil Is Now Working Nice Detection

[Qiaozhi]

Hello Qiaozhi Have Nice Day
I Just Want To Say Thanks To You Coil Calulation That Is Very Nice suggest
Thanks so Much My Coil Is Now Working Nice Detection

Thanks for the feedback.
I do like it when the calculations match reality.

[paku]

Yes Bro The right technology never lie

Qiaozhi

[metal mania]

Thanks for the feedback.
I do like it when the calculations match reality.

yea dude ur almost a god here some use the word demi god. Please sir may u r one of ur fellow genuis's put together an idiots guide to coil making ie how to change the frequencys and stuff ps did i say u dudes rock ps the book is good

[mohandes]

The Coil Calculator is designed for circular coils. For a DD coil you need to take the average of the two radii. The easiest way to do this is to add the two diameters together and divide by 4. i.e. (200 + 110) / 4 = 77.5 mm.
The wire thickness depends on the wire you are using. In this case it's 31 SWG, which has a thickness of 0.2946 mm.
You then enter various numbers for the number of turns until you get the required inductance value.
For the TX coil I would suggest 121 turns to give 5.9mH.
For the RX coil I would suggest 126 turns to give 6.4mH

Hi Qiaozhi
you say :add the two diameters together and divide by 4. i.e.
but i think this is true : 200 + 220 = 420/4 = 150 !!!!!!!!!!!!!
i say ok or wrong ??/

[tonyh]

For the D shaped coil the diameters are 200mm and 110mm, you are using 110mm as a radius, Qiaozhi is correct.
The long way of doing it is to calculate the circumference of the D then find the equivalent circle size with the same circumference measurement.

[paku]

This calculator just makesure how many winding you need,
but u still must have inductance meter to get the true
Calculation Tx and RX
i dont know the true for tgsl coil rx ? Mh tx ? Mh
i have make many coil size for tgsl but the deep is not good the kit is from silver dog

[Qiaozhi]

Hi Qiaozhi
you say :add the two diameters together and divide by 4. i.e.
but i think this is true : 200 + 220 = 420/4 = 150 !!!!!!!!!!!!!
i say ok or wrong ??/

I was going to reply to your post, but tonyh beat me to it.
Please see below ->

For the D shaped coil the diameters are 200mm and 110mm, you are using 110mm as a radius, Qiaozhi is correct.

Exactly!

The long way of doing it is to calculate the circumference of the D then find the equivalent circle size with the same circumference measurement.

I've tried both ways, and the average of the radii gives more accurate results.

[mohandes]

I was going to reply to your post, but tonyh beat me to it.
Please see below ->


Exactly!


I've tried both ways, and the average of the radii gives more accurate results.

ok , but i have Que to you:
can i use the TGSL coil(that you say in here)for Idx pro VDI ?????????????????
many thanks

[mohandes]

it is the good site for all
http://www.deephaven.co.uk/lc.html