[Amps] Grid fuses (was: Life and gain of 3-500Z)

[R L Measures]

On Jul 21, 2006, at 6:58 AM, Joe Subich, W4TV wrote:

>
> Rich writes:
>
>> Nothing.  Current is flowing vertically.  What is the direction of
>> the EMF?
>
> How does current flow vertically in a helical filament?

mostly vertically.  the pitch of the 3-500's helices is steep.
>
> The current must flow in/along the conductor - that's substantially
> horizontal

It's not.  There's a photo of 3-500 helices that are bent in  
"Parasitics Revisited in *QST* Magazine.

> which if I remember my physics from 40 years ago makes
> the force vertical up or down depending on the direction of the
> current (clockwise or counterclockwise).
>
> 73,
>
>    ... Joe, W4TV
>
>
>

R L MEASURES, AG6K. 805-386-3734
r at somis.org