[Milsurplus] 3B28 gas rectifier question

[wa5cab at cs.com]

Jim,

You can't use any 2.5V/5A transformer period, old or new.  You need 
2.5V/10A for a pair of 3B28's.  But to answer your question as intended, yes, the 
secondary of the filament transformer must be rated well above the DC output 
voltage.  The transformer in the BC-610 (running at around 2600 VDC on CW) 
was rated at 10KV.  You might call Fair on Monday.  They once upon a time had 
some replacement transformers for the 610's.

In a message dated 1/2/2010 4:26:44 PM Central Standard Time, 
mcenfalz at humboldt1.com writes: 
> I found a pair of these and they have continuity on the filaments. 
> So............I'd like to use them in a HV PSU (~1kV range) for kicks and 
> am thinking I can't use just any old 2.5V/5A transformer can I? Gotta have 
> high breakdown voltage also because it's part of the HV circuit, correct?
> 
> If so, who's a good supplier of these, or have they turned to unobtanium?
> 
> Happy New Year!
> Cheers!
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480