[Boatanchors] Filament transformer needed

[Glen Zook]

Actually, I am a firm believer in the principles of conservation of my finances and labor (you can read "cheap and lazy" if you want to!).  Fortunately, I have found a suitable transformer and it will be on its way Monday.

Glen, K9STH

Website:  http://k9sth.com


--- On Sun, 6/7/09, Lee Buller <k0wa at swbell.net> wrote:

> You might try re-winding a old frame E and I
> transformer.  If you have one that has a core large
> enough, you just have to figure the turns ration and rewind
> it.  Take it apart...save the primary...dump the
> secondary...then use #12 wire or multiple #12 wire...and
> wind as many turns as you need acordingto the turns
> ration.  At the half way point, put in your center
> tap.  I think there was an article in QST in the 60s or
> 70s about doing this.  You have to take your time
> getting the E and I laminations apart.  I used a small
> chisel and gently tapped them apart.  Getting started
> was difficult, but soon it worked well.  Then, putting
> it back together was not much fun either and I could not get
> the last couple of E and I laminations in.  Oh well, I
> just used it anyway.  Worked.  I used Shellack to
> put
>  it all back together again.  I did bake it in the
> oven for an hour or so at 300 degrees to get the Shellack
> even and I don't know if that helped.  Of couse you
> need to measure if you got the winding right and the center
> tap right.  It did "buzz" quite a bit under
> load but after a few hours it became quiet.
> 
> I did this when I was a poor college student....with no
> money.
> 
> Lee - K0WA
> 
> 
> The New
> Kansas QSO Party - August 29, Sat 9am-9pm and August 30 Sun
> 9am-3pm CDT 
> More
> Info at:  http://www.ksqsoparty.org/
>  
> In our day and age it seems that Common Sense is in short
> supply.  If you don't have
>  any Common Sense - get some Common Sense and use it.  If
> you can't find any Common Sense, ask for help from
> somebody who has some Common Sense.  Is Common Sense
> divine?
> 
>