[minima] Re: Toroid size?
- From: "Ken Chase" <chase8043@xxxxxxxxxx>
- To: <minima@xxxxxxxxxxxxx>
- Date: Sun, 16 Mar 2014 10:15:45 -0400
Try to use a size which fills about 3/4 of the toroid.. The larger the
wire(smaller gauge size) the less the number of turns that will fit.
73
Ken Chase VA3ABN
P.S. Nice last name Jeremy...hi hi
----- Original Message -----
From: Jeremy Chase
To: minima@xxxxxxxxxxxxx
Sent: Sunday, March 16, 2014 9:42 AM
Subject: [minima] Re: Toroid size?
What gauge wire did you use? Was it the same?
On Mar 16, 2014 12:50 AM, "Thomas Sarlandie" <thomas@xxxxxxxxxxxxx> wrote:
Mike,
This is what I used, based on Mark first build. You will also need 4
ft37-43 (3 transformers + rfc).
Value Qty Core N-Turns (Mark) N-Turns (Thomas)
.33 uH 2 T37-6 10 9
.39 uH 2 T37-6 11 10
.66 uH 2 T50-2 12 10
.78 uH 3 T50-2 13 11
3 uH 3 T33 25 24
73,
thomas
On Fri, Mar 14, 2014 at 10:22 AM, hcker2000 <hcker2000@xxxxxxxxx> wrote:
Ok so I see there are ft50-43's and t50-X's I'm guessing the ft50-43's is
what I'm after.
On Fri, Mar 14, 2014 at 1:19 PM, Juan Carlos Berberena Glez
<jcberberena@xxxxxxxxx> wrote:
Hi Fellow
Maybe it's helpful this link
http://www.kitsandparts.com/toroids.php
73's
Jc
2014-03-14 13:15 GMT-04:00 hcker2000 <hcker2000@xxxxxxxxx>:
Ok all good info. So T50's for example would they be suitable for
this application (the minima)?
On Fri, Mar 14, 2014 at 1:08 PM, Joe Street <jstreet@xxxxxxxxxxxx>
wrote:
Amidon has some great application notes which cover the different
materials and where their respective strengths and weaknesses lie. It's not as
simple as which is better, it depends on the application, frequency range,
whether or not the core has to be able to accommodate DC bias currents which
can saturate the core, etc etc. Read up on the subject and you will do
yourself a favour and be able to design your own inductors and transformers.
On 14/03/2014 11:49 AM, hcker2000 wrote:
Is 43 better than 61 or is it the other way around?
On Fri, Mar 14, 2014 at 11:48 AM, hcker2000 <hcker2000@xxxxxxxxx>
wrote:
After looking at that I am tempted to ask "who wants to wrap
and send me some transformers/cores".
What size did the original designer use?
On Fri, Mar 14, 2014 at 11:44 AM, Joe Rocci <joe@xxxxxxxxxx>
wrote:
Go to this web site and download the very excellent toroid
calculator program. It has all the information you need to deal with different
types of toroids.
http://www.dl5swb.de/html/mini_ring_core_calculator.htm
Also, be aware that you'll need a good ferrite material for
the transformers (type 43 or 61 typical), and low loss powdered iron cores for
the filters (type 2 or 6 typical).
Joe
W3JDR
----- Original Message -----
From: hcker2000
To: minima@xxxxxxxxxxxxx
Sent: Friday, March 14, 2014 11:24 AM
Subject: [minima] Toroid size?
I need to pick up some toroid's for winding. does the size
mater? Links to some good sizes would be greatly appreciated.
--
Mike "hcker2000" Ashcraft
http://bigironinteractive.com
--
Mike "hcker2000" Ashcraft
http://bigironinteractive.com
--
Mike "hcker2000" Ashcraft
http://bigironinteractive.com
--
Mike "hcker2000" Ashcraft
http://bigironinteractive.com
--
“If you have a penny and I have a penny and we exchange pennies, you
still have one cent and I still have one cent. But if you have an idea and I
have an idea and we exchange ideas, you now have two ideas and I now have two
ideas.”
Lic.Juan Carlos Berberena Gonzalez
WJ6C exCO6BG
www.berberena.com
http://espanol.groups.yahoo.com/group/cacharreando/
--
Mike "hcker2000" Ashcraft
http://bigironinteractive.com
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