[Amps] 813 Fil Xformer

Gudguyham at aol.com Gudguyham at aol.com
Wed Jan 24 13:32:28 EST 2007


 
In a message dated 1/24/2007 12:23:01 PM Eastern Standard Time,  
w0jx at yahoo.com writes:

Steve:
Another approach is to wire the two filaments in  series (the TL-922 does 
this I believe).
Then you could use 24 volt  xformer drawing current equal to one tube. Put a 
resistor in the primary lead  to get some inrush protection.





We can just simply turn right or we can make 3 lefts, the end result is the  
same, but one approach is much more direct and simple.  A 10V 10A filament  
transformer is a common item ( I have a couple) I offered one to Steve, but he  
says he found one already.  Homebrewing is a great way to save money, but  it 
is my opinion that "the right part for the job" should be a main  concern.  
Some of us homebrew better than commercially available quipment  and some of us 
really give homebrewing a bad name.  One saves tons of money  building their 
own, I think "the right part for the job" should be in front of  saving a 
couple of bucks.  If something is totally unavailable then perhaps  a "work around" 
is neccesary.  On the other hand, I've seen guys spend all  sorts of money on 
"over kill" parts i.e. using a vaccuum variable when a good  air variable 
will work just as well for a fraction of the cost.  With power  levels less than 
2KW I see no need for them.  I KNOW in some instances they  come in handy for 
160 -10 M.  Many do not appreciate good homebrewing and  some homebrewing is 
simply junk.  Lou


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