[Amps] filament voltage question

[Tony King]

That's a good point Rich. In any case, a minor adjustment to the primary 
will bring the filament right to where you want it. I'm a firm believer in 
step start for filaments on expensive tubes as well as high voltage 
supplies.  Thanks!

73, Tony W4ZT

At 09:58 AM 10/29/2004, R. Measures wrote:
>Tony --  The problem with 0 - 115% variable transformers is that it is not 
>necessary to be able to adjust the filament V more than +/- 8%.  A 
>rheostat does the job nicely.
>
>On Oct 29, 2004, at 6:26 AM, Tony King wrote:
>
>>An easy solution would be to obtain one of the small variable 
>>transformers (I have a couple I bought on Ebay) and put it in the 
>>filament transformer primary so you can make the necessary minor 
>>adjustment.  73, Tony W4ZT
><snip>
>Richard L. Measures, AG6K, 805.386.3734.  www.somis.org