[Amps] 4pr1000 heater voltage?

[gdaught6 at Stanford.edu]

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