On 6 May 2003 at 14:40, Dr. David Kirkby wrote:
> You can easily add an external resistor in series with the heater. I
> don't know what the heater current is, but if you need to drop 0.8V,
> R=0.8/I, where I is the current in amps, with a power rating of
> 0.8*I*I, where I is the current in Amps.
>
> Assume I is about 8 Amps (guessing off the top of my head), you will
> need something around 0.1 Ohms at 7 Watts,
BAD GUESS!! It's more like 21 amperes!
> but I would do the maths
> and work it out.
Yes.
73,
George T. Daughters, K6GT
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