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17th May 2010, 04:36 AM
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#1 |
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diyAudio Member
Join Date: Jul 2005
Location: Campo Grande city
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24A tube in triode mode, help !!!
Friends
I want use the 24A in triode mode. I want use 150V in the plate and the screen, but in the RCA manual, the maximum screen recommended voltage is 90V... I can put 150V in the screen, this value is conservative and the tube support 150V , or I have risk of burn the screen ? Thanks, Aldovan 
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17th May 2010, 05:55 AM
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#2 | |
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diyAudio Member
Join Date: Mar 2010
Location: Western Massachusetts U.S.A.
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Quote:
Jim |
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17th May 2010, 06:14 AM
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#4 |
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diyAudio Member
Join Date: Feb 2009
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Excessive voltage = risk of flashover & too much screen grid current. Note the rrecommended screen voltage is waaaaay below 90V.
If I were you I'd either use it as intended or not at all.
__________________
mod verb, transitive /mod/ to state that one is utterly clueless about the operation of device to be "modded" and into "fixing" things that are not broken; "My new amplifier sounds great so I want to mod it." |
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17th May 2010, 07:11 AM
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#5 | |
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diyAudio Member
Join Date: Jul 2005
Location: Campo Grande city
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24a
Quote:
But I want use this pentode in triode mode. I need connect to plate and the plate will work with 150V. Them I use a resistor between the plate and the screen for lower the voltage and limit the current ? Aldovan |
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18th May 2010, 04:33 AM
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#6 |
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diyAudio Member
Join Date: Mar 2010
Location: Western Massachusetts U.S.A.
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I think you would be safe connecting it as a triode with a plate resistor connectet to 150 volts. 24A is a 'signal' not 'power' tube. What are you intending to do? Some kinda funky guitar amp input stage?
Jim |
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18th May 2010, 10:36 AM
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#7 | |
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diyAudio Member
Join Date: Jul 2005
Location: Campo Grande city
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Only a experience...
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