[Test-Equipment] Same old dumb question my way:

JC johnk0gcj at gmail.com
Tue May 3 13:35:57 EDT 2022


I doubt that the wirewound resistor has an inductance of 12.6 Henrys. I
would
believe 12.6 mH.

John K0GCJ



On Tue, May 3, 2022 at 12:08 PM Doug Hensley <w5jv at hotmail.com> wrote:

> Okay, so a good resister converts electrical power into heat.  Got it.
>
> I still am interested in learning how a partially inductive load would
> affect
> the tuning of an RF output circuit.  For example:
>
> I took some 250 ohm 100 W Ohmite wire wounds and configured a 50 ohm
> array.  The inductance of a single Ohmite was around 12.6 H.  The array
> measured 360 uH.
>
> I loaded my little rig into it and seemed to be okay.  Resistors got
> mildly warm.
> Switched over to my LDG Auto Ant Tuner and it matched within a second.
>
> I then changed the load to a 100W lightbulb & repeated the same thing and
> did not see any difference.
>
> So okay, the LDG is keeping the secret of whatever difference there was to
> itself.
>
> Can anyone surmise in practical terms what I did not see?
>
> Doug W5JV
>
>
>
>
> Visit https://www.qrz.com/db/W5JV for some great vacuum tube finds.
>
>
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