Bill,
Your correct. Power transformer toroids though are made with steel ribbon wound
up into a toroid. They will couple more than powdered iron or ferrite over
this. However, toroids don't couple as easy as an EI or C-core would setting
side by side butted together. He might get by with less than a 1" spacing, I'm
not sure without checking it as you say. I know from experience using EI cores,
a 1 inch air gap between the cores worked. I seen some once mounted next to
each other and touching. They did interact and actually got that leg of each
transformer hot from I guess one bucking the other. What you really have to
watch for is audio (impedance) transformers mounted side by side. I think he'll
be ok by spacing them apart but the air gap, I'm just guessing at from
experience with EI cores.
Best,
Will
*********** REPLY SEPARATOR ***********
On 2/20/06 at 7:37 PM Bill Turner wrote:
>ORIGINAL MESSAGE:
>
>At 06:18 PM 2/20/2006, gd0tep@Safe-mail.net wrote:
>>Ah, OK.. there isn't enough room for a right angle stack, but what
>>if I stacked them one on top of the other, with about 1" between
>>them, and some sort of steel plate between them that's part of the
>cabinet?
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Here's a thought. I haven't actually tried this but I think it should
>answer your question. If anyone spots an error in my thinking, please say
>so.
>
>As a rough test, connect the two in series and measure the resultant
>inductance. Start with them far apart and move them closer together.
>When the inductance starts to change, you have coupling between the
>two. Toroids are notoriously hard to couple together so you may find
>you can get them quite close with no interaction.
>
>Please let us know what you find.
>
>73, Bill W6WRT
>_______________________________________________
>Amps mailing list
>Amps@contesting.com
>http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|