No, the only burned contacts are the ones connecting the padder condenser.
RFC at the output is 105 ohms which is normal. And the air-gap 7 to 9 is
very big - no flash over here.
I will try to grid-dip the lead to the padder condenser and also the
filament choke. If there are any common dip frequencies, we have the
flash-over reason there. Then, there are two solutions: accept RICHs kind
offer and try his parasitic choke or a simpler one: instead of connecting
the padder with a straight wire to the switch as it is done now, increase
its inductance and convert the wire into a small coil. Eventually this could
move the anode dip frequency slightly away from the common frequency of the
naughty little tptg oscillator. And fix the problem. If it exists, hi!
Now, where is that little 110 volt autotransformer and the old MILLEN
grid-dip meter.......?
Prosit de Hans
----------
>Från: measures <measures@vcnet.com>
>Till: <rakefet@rakefet.com>, "sm5ki" <sm5ki@algonet.se>, "Amps reflector"
<amps@contesting.com>
>Ämne: Re: SV: [AMPS] UrgentSwedish questions
>Datum: mån 24 jan 2000 15.00
>
>
>>
>>sm5ki wrote:
>>>
>>> I still think it is the current because BOTH switch contacts are burned and
>>> there can not be any flash-overs beetween an already grounded switch contact
>>> and ground? Or am I wrong?
>>
>>If I'm not mistaken, contact no. 9 goes to the padder capacitor. The
>>other side
>>of the padder goes to the plate. This is the high potential point.
>>Contact no.
>>7 is grounded. The arc can be from contact 9 to ground (burning just contact
>>9), or contact 9 to contact 7 (burning both of them).
>>
>indeed, Vic,
>
>- Rich..., 805.386.3734, www.vcnet.com/measures.
>
>
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