[sdiy] thermistors

[Sandro Traversi]

So definitely when I need tempco resistors I really need to buy for PTC
thermistor ?
It applyies also biulding my ASM 1 ?

Sandro

----- Original Message -----
From: "René Schmitz" <uzs159 at uni-bonn.de>
To: "Michael Schulze" <michael.schulze at oberlin.edu>;
<synth-diy at dropmix.xs4all.nl>
Sent: Thursday, May 23, 2002 6:43 PM
Subject: Re: [sdiy] thermistors


> At 11:59 23.05.02 -0400, Michael Schulze wrote:
> >Can someone explain to me the difference between a tempco resistor and a
> >thermistor?
>
> A tempco resistor is typically made out of platinum (or other metalls or
> alloys),
> which has the property that its resistance raises linearly with
temperature.
> (PTC = positive temperature coefficient)
>
> A thermistor is made out of silicium which has the property that the
> resistance
> falls exponentially with temperature. (NTC = negative temperature
> coefficient.)
>
> Cheers,
>  René
>
>
> --
> uzs159 at uni-bonn.de
> http://www.uni-bonn.de/~uzs159
>
>
>
>