• 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.

Voltage drop AZ1 = AZ11 = RGN1064 rectifier tube


Does anybody know how much the voltage drop of a AZ11 = AZ1 = RGN1064 rectifier tube is? I looked at many datasheets, but cannot find it - or is it in the curves that I should look? :eek:

I'ld like to use it in an schematic that uses 5U4, if Az1 loses less voltage it's no problem, otherwise my amp will be short of voltage!

Hello reaction,

Just found where to look now you gave me one 'solution'.

Voltage drop at 75 mA: 5U4=25V / AZ11=40V / GZ34=6V!!! The GZ32 drops a little less than the 5U4 and still some more than the GZ34...

I'm gonna go for the GZ34 as they have a good reputation (except for the Chinese, although my local tube-guru finds many Chinese tubes including these excellent...) and I have some new production JJ's and nos Siemens lying around. :D

Thanks for the help; it's been noted for future use that you like the GZ32!;)