Heating Element with PTC Curve

[OlafLuede]

Hello friends,

I have a heating element with a PTC similar behavior. From this
element by the manufacturer is known the R=f(T) curves.

I know at a known temperature the heating elements Ohm's resistance.

My question is the following:
Can be computed on the basis of these characteristics also the heating
duration?

I would like to know for what for a time how much energy the heating
element must have to receive a certain temperature !!

Thank you for your assistance

Olaf Luede

Vauxdvihl@gmx.de

 

[John Woodgate]

I read in sci.electronics.design that OlafLuede <Vauxdvihl@gmx.de> wrote
(in <ae2fa7d0.0403152228.652c5858@posting.google.com&gt about 'Heating
Element with PTC Curve', on Mon, 15 Mar 2004:

I have a heating element with a PTC similar behavior. From this element
by the manufacturer is known the R=f(T) curves.

I know at a known temperature the heating elements Ohm's resistance.

My question is the following:
Can be computed on the basis of these characteristics also the heating
duration?

No. You need to know also the thermal capacity of the element, and how
much heat it loses to its surroundings, and how that varies with the
temperature of the element.

I would like to know for what for a time how much energy the heating
element must have to receive a certain temperature !!

--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk