>
>>> I had a power transformer with all the secondaries together ( including
>>> filaments) for a tetrode (4CX400). Can I put all voltages in the start,
>>> with screen in 0 volts, and 30 seconds later full voltage?
>>
>>Juan,
>>
>>It is always best to not have HV until the tube warms up, and
>>always HV on anode and bias before having screen voltage.
>>
>>You can apply all voltages at one time with a MOX cathode tube,
>>but you must absolutely protect the tube from any cathode current
>>before the cathode is fully heated....or you will ruin the tube.
>>
>>73, Tom W8JI
>>w8ji@contesting.com
>>
>
>Tom,
>How long would you recommend the filament voltage of a 4CX1000A
>be on for, before applying the other rails?
>
Rails carry electric current in subways.
cheers, Mark
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>--
>FAQ on WWW: http://www.contesting.com/FAQ/amps
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>
>
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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