No I mean a transformer that is designed with shunt or gap, I cannot
remember how it is done.
Basically the filament transformer will not go beyond 2 X the normal
current without voltage falling off. Someone here understands
transformers better and can explain.
Yes, keeping credit card out of my hip pocket when near those cables. I
have them strapped together to try and prevent a large loop that would
have stray magnetic fields. It is a DC filament for the TH628.
73
John
K5PRO
> Message: 7
> Date: Sun, 29 Aug 2010 21:09:15 +0300
> From: ???????????? ??????????<panos2@otenet.gr>
> Subject: [Amps] soft start on filament
> To:<amps@contesting.com>
>
> thank you all for the info
> now john lyles what do you mean by magnetic design controll like the old
> welding machines that the core was moving manualy withe a rod ??
> if so yes it will work
> peronaly i prefer a transformer with steps in primery or a varactor in
> primery
> eny way i need 2 4 400 tubes to replace the old one if eny of you gends
> have some in a good shape and resnable price please let me now
> god luck for the testing of the big one jhon
> be very carefull of the magnetic fields arownd the big filament cables at the
> test
> regards panos SV4JYI
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