• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

24A tube in triode mode, help !!!

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aldovan

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Joined 2005
#1
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 😀
 
#2
aldovan said:
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 😀
Click to expand...

24A? Why? Are you sure you don't mean 242A? Just asking.

Jim
 
#5
24a

Arnulf said:
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.
Click to expand...

Thanks !!!
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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