[Lowfer] 8 kHz VLF loading coil idea

[W2MXW]

-----Original Message-----
From: riese-k3djc@juno.com <riese-k3djc@juno.com>
To: lowfer@mailman.qth.net <lowfer@mailman.qth.net>
Date: Sunday, August 10, 2003 4:53 PM
Subject: Re: [Lowfer] 8 kHz VLF loading coil idea


>MOT will work and are useful as HV transformers but you will need to
>remove
>an additional bit of the core which act to limit the current on a high
>load. This
>should be spotted and tapped out wit a hammer N screwdriver. I was using
>one fer HV
>and after removing this the regulation much improved.
>
>so I would think you may want to do it for the use you are putting it to
>
>your idea sounds worth playing with
>keep the lost posted
>
>Bob  K3DJC

Thanks for the tip Bob! Yes, I had heard about those little magnetic shunts
for current limiting but didn't know they'd mess up regulation so much,
otherwise I probably would have left them in and wondered why I was having
problems. I don't know for sure if this is applicable to loading coil
service although if I do use a MOT for that I'll still tap out the shunts
just to be sure, but certainly for HV power supplies. These things are great
for big PSUs, TCs, etc., and free (from junkpiles! :-) One more reason why I
wanted to use one for this project.
73, Jon