GZ34 and temperature

[rossdt]

Could anyone help me?
I've an GZ34 that supply 200 mA for the amplifier.
Which is the temperature reached from the valve?
Thank you.

Alessandro.

 

[Frank Berry]

Alessandro,

The GZ34 is rated at 250 ma.
With a 200 ma load, the tube will be approaching its limit.

The temperature of the tube will depend on the air flow around the tube.

Please give us more information.

What is the voltage applied to the anodes?

 

[rossdt]

Exactly: Va = 450 V rms (off-load voltage).
GZ34 is followed by CLC filter (22 uF - 20 H - 33 uF).
The amply works in class A.
Thank you.

Alessandro.