[AMPS] L-4B grid ckt shorts

[Ian White, G3SEK]

Rich Measures wrote:
>>Much more likely it was an intermittent short from HV+ to chassis. 
>
>How could an intermittent HV short to the chassis bend the 3-500Z 
>filament, producing a grid/filament short, Ian?

I honestly don't know.  But... how could an oscillation produce enough
grid current - GRID current, not cathode current - to burn out a
resistor that is rated to carry 10A continuously? 

73 from Ian G3SEK          Editor, 'The VHF/UHF DX Book'
                          'In Practice' columnist for RadCom (RSGB)
                           http://www.ifwtech.demon.co.uk/g3sek

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