[Hallicrafters] HT-32 to HT-37

[Richard Knoppow]

----- Original Message ----- 
From: "Wilson Lamb" <infomet at embarqmail.com>
To: <hallicrafters at mailman.qth.net>
Sent: Tuesday, October 02, 2012 9:27 AM
Subject: [Hallicrafters] HT-32 to HT-37


>
> Put in the SS diodes, with some resistors or a choke to 
> set the voltage.
> Use the 5V winding to buck down the primary.
> I think I saw a bad 5V4 or 6X5 yrs ago, but I've never 
> seen a 5U4 or 5R4 short.
> They have quite a bit of space between fil and plate and 
> I've used the 5R4 up to 800V.
> And how about a fuse in the secondary?
> Wilson
> W4BOH

    I've seen 6X4's with heater to cathode shorts a couple 
of times. One fried a transformer.  The 6X4 is a miniature 
version of the 6X5 so the element spacing may be closer, I 
don't know. I have not had a problem with the 6X5 octal 
version.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com