To: | <w2cqm@juno.com>, <amps@contesting.com>,"Norman Hockler" <sanorm@columbus.rr.com> |
---|---|
Subject: | Re: [Amps] How best to reduce filament voltage? |
From: | "Tom W8JI" <w8ji@w8ji.com> |
Date: | Fri, 2 Feb 2007 10:32:29 -0500 |
List-post: | <mailto:amps@contesting.com> |
This will not work. Don't do it. > Install a resistor on the primary side of the transformer. > Much > lower current and the resistors will act as a > soft start for the filament to damp the inrush when you > first turn on > power. Set the resistor value with the > tube on and warm There are many sliding tap resistors > available from > the distributors or a fixed one will > work as well. Ohms law calculation to determine the value. It will totally hose the voltage regulation under load, and the resistors would have to be huge. 73 Tom _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
<Prev in Thread] | Current Thread | [Next in Thread> |
---|---|---|
|
Previous by Date: | Re: [Amps] How best to reduce filament voltage?, Tom W8JI |
---|---|
Next by Date: | Re: [Amps] How best to reduce filament voltage?, Jim Tonne |
Previous by Thread: | Re: [Amps] How best to reduce filament voltage?, Norman Hockler |
Next by Thread: | Re: [Amps] How best to reduce filament voltage?, Jim Tonne |
Indexes: | [Date] [Thread] [Top] [All Lists] |