[Prev][Next][Index][Thread]

RE- Ferrite chokes & saturation - why toroids?




From: 	Chuck Curran[SMTP:ccurran-at-execpc-dot-com]
Sent: 	Friday, November 28, 1997 7:30 AM
To: 	Tesla List
Subject: 	Re: RE- Ferrite chokes & saturation - why toroids?

Alfred:

I do tend to agree with your comments since the toroids used on the HV side
of my transformer were both hand wound very quickly and easily.  The winding
was far easier than the effort required to put in place the inter-layer
insulation!  I ended up with 180 turns or four layers of #20 wire on my
wound toroids which are 2 1/2" O.D., 1 1/4" I.D. and 1" Thick.  I simply
reached up into the basement rafters and pulled down some of that left over
wood strips I had and cut off and notched about an eight inch length.  Here
I pre-wound a calculated length of wire and went to it.  Quick and easy job.
I simply used electricians tape for the interlayer insulation.

Chuck


-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
Date: Thursday, November 27, 1997 10:45 PM
Subject: Re: RE- Ferrite chokes & saturation - why toroids?


>
>From: Alfred A. Skrocki[SMTP:alfred.skrocki-at-cybernetworking-dot-com]
>Sent: Thursday, November 27, 1997 10:42 AM
>To: Tesla List
>Subject: Re: RE- Ferrite chokes & saturation - why toroids?
>
>On Wednesday, November 26, 1997 3:14 AM Robert Michaels
>[SMTP:robert.michaels-at-online.sme-dot-org] wrote;
>
>> God never intended for Man to wind toroidial cores by hand
>> -- and it's against the nature of things to even try (if
>> you do you'll be called to answer...)
>
>Hog wash! Toroidal cores are EASY to wind, the key is you have to put all
>the wire on a shuttle first then just keep passing it over and through the
>toroid. Take a look in any of the newer ARRL Radio Amature Handbooks, they
>have complete instructions on how to wind on toriodal forms. See the ASCII
>drawing bellow, you put the wire on between the horns, of course you make
>the shuttle's width such that it will easily pass through the toroid's hole
>and you make the shutle long enough to hold all the wire you need to put
>on. You unwind the wire from the shuttle as you wind it onto the toroid.
>
>                 _     _
>                | |   | |
>                | |   | |
>                | |---| |
>                |       |
>                |       |
>                |       |
>                |       |
>                |       |
>                |       |
>                | |---| |
>                | |   | |
>                |_|   |_|
>
>                               Sincerely
>
>                                \\\|///
>                              \\  ~ ~  //
>                               (  -at- -at-  )
>                        -----o00o-(_)-o00o-----
>                           Alfred A. Skrocki
>                   Alfred.Skrocki-at-CyberNetworking-dot-com
>                             .ooo0   0ooo.
>                        -----(   )---(   )-----
>                              \ (     ) /
>                               \_)   (_/
>
>
>
>