Homebrew PCBs

On Wed, 13 Oct 2004 20:51:10 -0000, Bengt <tecnoconsult@...> wrote:

>
>
>> Hi Stefan,
>> In my Photo album I have one picture, is this a thermo *device* that
>> can be used for the schematics you will provide?
>
> The resistance is about 250Kohm in room temperature, decreases when
> warming up.
>
> Bengt
>
>

looks quite right, you will want to use a fairly large value for the pot  
to start
with, say 500k or more. you can measure the resistance at 160C if you want  
to know if
a lower value would be better (if it is too big it is hard to adjust  
precise but if it is too
small the temperature will be too high).

have a look at that schematic and then we can discuss everything i left  
out.

ST