>> 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?
73, Mark G4AXX
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|