[Amps] Re: Voodoo "EMF' forces from grid current pulses

Ian White, G3SEK G3SEK at ifwtech.co.uk
Fri Feb 7 13:29:33 EST 2003

2 wrote:
>> One thing's for sure, something
>>happens, but what?
>Good question.  What is the fusing current of #28 Cu ?  It must be at 
>least 15A,

Exactly 15A - good guess! However, a significantly larger current would 
be needed to fuse #28 wire with the single short pulse we're talking 
about here.

>and yet the 3-500Z cathode/filament is theoretically not capable of 
>such a preak emission.

You may have answered your own question - electron emission isn't enough 
to supply the current required. An arc from anode to grid is easily 
capable of much more peak current than 15A, limited essentially by the 
power supply components.

73 from Ian G3SEK         'In Practice' columnist for RadCom (RSGB)
                            Editor, 'The VHF/UHF DX Book'

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