[Boatanchors] Ohms Law

[WA5CAB at cs.com]

Barrie,

Others have already commented on the resistor question, so I won't.  But I 
will offer a suggestion that won't generate much heat at all   Get a 115 to 
12.6 VAC @ 1.5 or 2 A filament transformer and use it to buck the line 
voltage to the large 5 VAC transformer down by 12.6 volts.  If part of the 
problem is that your selected 5 volt transformer is rated 115 VAC primary but your 
line voltage is for example 120, then it will reduce the line voltage by 
13.1 VAC.  If the 12 volt filament transformer has two or three primary taps, 
you can do some further fine tuning.

In a message dated 4/18/2010 5:40:39 PM Central Daylight Time, 
barrie at centric.net writes: 
> 've been juggling 5 volt transformers all day, trying to find one that 
> would actually produce close to 5 volts for a pair of tubes.
> 
> They were all either too high in voltage, or too low.  One did give me 
> almost exactly 5 volts, but it ran way too hot.
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480