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rossdt 26th October 2006 08:33 PM

GZ34 and temperature
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.


Frank Berry 26th October 2006 08:52 PM


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 26th October 2006 09:04 PM

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.


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