[Hallicrafters] R-274D/FRR Correction - HV tube replacements.

Roy Morgan roy.morgan at nist.gov
Tue May 28 20:31:40 EDT 2002


At 04:58 PM 5/28/02 -0700, you wrote:
>Here is a source for plug in Rectifier replacements..
>
>http://www.retrosound.com.au/Valves/Copper_Caps.htm
>My Hallicrafters HT-32 and HT-37 power transformer runs cooler as there is 
>no need for the 5v fillament current on the two HV rectifiers.


And they will run even COOLER if you put that 5 volt filament winding in 
series with the line voltage - bucking, of course.  (This is especailly 
true for us 115/120 volt mains folks. VK-land may use 240 volts.)

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
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