Re: LF: T200-2 toroid cores

["Albert" <westberg@xs4all.nl>]

Hello Rik,

 

I am using T225-2B's in the LPF for my portable 500 kHz TX. @ 500W output they stay cool.

 

73, Albert PA0A

 

See: http://partsandkits.com/toroids.php

 

 

----- Original Message -----

From: Rik Strobbe

To: rsgb_lf_group@blacksheep.org

Sent: Thursday, August 12, 2010 5:33 PM

Subject: RE: LF: T200-2 toroid cores

Warren,

 

thanks for the hint.

I just had a look and Jay actually uses T225A-2 toroids. The "A" means almost double height (and thus almost double cross sectional area).

But Jay states that "Both filters have been tested to power levels in excess of 1000 watts and should be capable of handling significantly more power.".

So I assume that the T200-2 toroids will be OK for the 400-500W power level I have in mind.

 

73, Rik  ON7YD - OR7T

 

---

Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Warren Ziegler [wd2xgj@gmail.com]
Verzonden: donderdag 12 augustus 2010 16:56
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: T200-2 toroid cores

Rik,

  See Jay's web page, he uses T225-2 cores at the kW level for LPF:
http://www.w1vd.com/LPF.html

--
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1

On Thu, Aug 12, 2010 at 9:27 AM, Rik Strobbe <Rik.Strobbe@fys.kuleuven.be> wrote:

Dear all,

does anyone have experience with T200-2 cores (amidon) for 500kHz lowpass filters ?
Up to what power are they suitable ?

73, Rik  ON7YD - OR7T