[Boatanchors] PS for tube stuff: Follow up

[Bob Macklin]

Hammond still makes HV PLATE transformers:

http://www.hammondmfg.com/700.htm

Bob Macklin
K5MYJ
Seattle, Wa.

----- Original Message ----- 
From: "Eugene Hertz" <ehertz at tcaf.org>
To: <boatanchors at mailman.qth.net>
Sent: Sunday, December 18, 2005 3:34 PM
Subject: [Boatanchors] PS for tube stuff: Follow up


Follow up question about power supplies for experimenting with tube gear...

I was looking through some tubes I had for possibly building a cw
transmitter.  I had the following tubes that I had collected

one 813
two 211 (VT4C)
one 250th (it just looks so cool!)

I then looked up some of the plate voltages/current of these and boy! Looks
like I need a 2KV supply for the 211's for example (anyone have a simple
push pull cw circuit that uses 211's?)

So I went to epay and did see some HV supplies, 2KV, 6KV 10KV etc.  So do
you fine fellows use bench supplies that high to experiment with
transmitter/amp circuits or is it just simpler to build an HV supply?

ONE LAST QUESTION!
Seems some tubes want DC filament voltages and some use AC? I would have
thought that AC would induce a 60hz hum onto the signal, no? Can one use DC
on a filament rated for AC? Pros? Cons?

Ok, I lied, one last last question.  What is "getter"?!
thanks and 73
Eugene


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