Lab Power Supply

Nikon1975 · 10th December 2009, 06:45 AM

Hi All,

I would like to but a power supply for the HV to play around with various valves, including KT88 and 300B. I have been offered the following:

1) Max 350 V 0.250A drop type

or

2) Max 500 V 0.200A switching type

What would you pick ? the second one is also more expensive.

Do you think that 350 V is not enough?

Thanks,

Davide

m6tt · 07:57 AM

I think having 500v available would be helpful for power pentodes and beam tubes. Many multigrid power tubes like voltages between 350 and 500. It's probably better to have the voltage available than to need it and not have it, depending on the difference in price!

Tony · 11th December 2009, 10:52 AM

a variac is the way to go......

10th December 2009, 06:45 AM	#1
Nikon1975 diyAudio Member Join Date: Nov 2009 Location: Vienna	Lab Power Supply Hi All, I would like to but a power supply for the HV to play around with various valves, including KT88 and 300B. I have been offered the following: 1) Max 350 V 0.250A drop type or 2) Max 500 V 0.200A switching type What would you pick ? the second one is also more expensive. Do you think that 350 V is not enough? Thanks, Davide

11th December 2009, 07:54 AM	#2
m6tt diyAudio Member Join Date: Aug 2007	I think having 500v available would be helpful for power pentodes and beam tubes. Many multigrid power tubes like voltages between 350 and 500. It's probably better to have the voltage available than to need it and not have it, depending on the difference in price! Last edited by m6tt; 11th December 2009 at 07:57 AM. Reason: improved

11th December 2009, 10:52 AM	#3
Tony diyAudio Moderator Join Date: May 2003 Location: Palatiw, Pasig City	a variac is the way to go...... __________________ http://www.elab.ph/forum/index.php?topic=32688.0

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