[Lowfer] Connecting to Loop

Lewis Denton [email protected]
Sat, 3 Jan 2004 16:17:47 -0600


Thanks Bill, Mike.
I guess I will start with a 10/1 and tap down if necessery.
Another Project, Wheeeow !!!
Lewis

Every thing that has ever been will always be.
That which is to be will be added. ( Lewis )

Space and time don't exist. ( Julian Barbour )

I think it is one pass through the center with the loop and 4-8 turns for
the amplifier side. I don't remember what turn I have it on now. I recall
something about needing at least 400uh of inductance in the transformer in
the amplifier winding. I tried tapped 10 turn transformers and tapped 20
turn transformers to get the inductance way high.

Mike>WE0H

> Lewis, this depends on the Rac of the loop and the P-P drive signal. It's
> all in my second article. As an example: With a 24vdc Vcc (24v p-p square
> wave on the primary of the transformer) the reflected load from the loop
> through the transformer, based on 1w, is about 70 ohms. If your loop Rac
is
> 0.7 ohms the turns ratio would be sq rt 70/.7 = 10 to 1. You can just get
by
> with the popular #43 core type on this one.
>
> Bill A
>
> _________________________________________________________________