>
>Classic divide and conquer analysis...
>
>You want an upper bound on the current.
>Take the effing tube out of the circuit and
>measure the peak current that pops your choke.
>
>Do this by simulating the 'event' (short in tube)
>with a relay.
^^ A short in the tube does not blow the choke. I simulated a
grid-filament 3-500Z short with a clip lead, and the result was a
unspectacular rise in DC anode current. The choke did not implode or
burn out.
>
>This will tell you if all the other speculation
>is within the realm of reason or Bull Shit.
>
>Depending on what you measure, you might
>end up with a clue as to eggs before chickens
>or the other way around...
>
>-Bob
>ah7i
>(It is eggs before chickens, from an evolutionary POV)
>
>
>
>On Sun, 9 Feb 2003, 2 wrote:
>
>> The trick is to have the scope connected when an event takes place --
>> which could be once in maybe a year or eight.
>>
>> >Why speculate? If you've a storage scope or a
>> >scope with triggered sweep amd a camera
>> >it's easy to measure the destruction of that
>> >28 guage choke and get a handle on the
>> >upper limit of that current.
>> >
>> >-bob
>> >ah7i
>> >
>> >
>> >2 wrote:
>> >
>> >>
>> >>
>> >>>Jeffrey Madore wrote:
>> >>>
>> >>>
>> >>>>As I alluded to, I think we can leave the terrestrial magnetic field
>> >>>>out of the equation.
>> >>>>
>> >>>>
>> >>>That is clear from Eric's calculation.
>> >>>
>> >>>
>> >>>
>> >>>>A length of power cable in free air exhibits the property of inductive
>> >>>>reactance when there is AC current flow. This XL results when the
>> >>>>cables own magnetic field expands and collapses about the conductor
>> >>>>itself. The result is a CEMF which produces current that is out of
>> >>>>phase with the source current and thus bucks or impedes the flow of
>> >>>>current from the source. Hence, we have these two current components
>> >>>>which are out of phase, producing magnetic reaction and mechanical
force.
>> >>>>
>> >>>>
>> >>>>
>> >>>If you can describe the scenario, you can predict the force. Please may
>> >>>we see a calculation?
>> >>>...
>> >>>
>> >>>
>> >>** not until someone measures the currents present during the event that
>> >>preceeds a 3-500Z fil/grid short. So far, the only quantity we can guess
>> >>at is the >15a it takes to melt #28 Cu in the grid's DC return path.
>> >>
>> >>- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
>> >>www.vcnet.com/measures.
>> >>end
>> >>
>> >>_______________________________________________
>> >>Amps mailing list
>> >>Amps@contesting.com
>> >>http://lists.contesting.com/mailman/listinfo/amps
>> >>
>> >>
>> >>
>> >
>> >
>> >
>> >
>>
>>
>> - R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
>> www.vcnet.com/measures.
>> end
>>
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>>
>
>
- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
www.vcnet.com/measures.
end
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