guys,
this is a ridiculous waste of time. i was really curious as to toroids
practical use in high power amp design and was hoping that someone would
recommend reading material or designs for the same.
get a life if you can't give the originator of this thread a straight
answer.
73,
larry
n7dd
In a message dated 27/03/12 12:08:09 A.M. Morocco Standard Time,
jtml@losalamos.com writes:
Peanut butter at least has low magnetic loss tangent. I would think it
would have a high and unstable dielectric loss tangent as it heats readily at
2450 MHz. Sometimes I heat it to get it flowing again, after being
refrigerated. The cheap plastic jars around here have that foil seal on the
lid.
When it is opened, undoubtedly there is a metal strip remaining on the edge
of the jar. When I stick that into my RadarRange, it always arcs and
sparks, dang it.
73
K5PRO
> Date: Mon, 26 Mar 2012 00:44:15 +0000
> From: Manfred Mornhinweg <manfred@ludens.cl>
> Subject: Re: [Amps] Guidelines.....toroids for tank ckts
> It might be rather lossy. The resistive permeability might be larger
> than the inductive one. But once the jelly is hot, eat it, it tastes
> good when hot. That will leave you with a high-Q donut.
>
> A year ago I was on a trip on a sailboat, and the autotuner of my TS-450
> absolutely didn't want to tune up the backstay on 80 meters. So I wound
> a loading coil on a peanut butter jar. A few days later we ate the
> peanut butter, forcing me to move the turns a little closer together on
> the empty jar, to maintain proper resonance. There didn't seem to be
> much difference in performance. Peanut butter has low permeability, and
> apparently pretty low loss too.
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