GZ34 and temperature

rossdt · 26th October 2006, 08:33 PM

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 · 26th October 2006, 08:52 PM

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 · 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.

Alessandro.

26th October 2006, 08:33 PM	#1
rossdt diyAudio Member Join Date: Jul 2006	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. Alessandro.

26th October 2006, 08:52 PM	#2
Frank Berry diyAudio Member Join Date: Sep 2003 Location: Midland, Michigan	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? __________________ Frank

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26th October 2006, 09:04 PM	#3
rossdt diyAudio Member Join Date: Jul 2006	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.

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