Version 1.0, August 31, 2001, Copyright, Hugh Jack 1993-2001
· Non-linear devices that change conductivity with temperature. These are usually semiconductors.
· The resistance drops as the temperature rises. (Note: this is because the extra heat reduces electron mobility in the semiconductor.) This effect can change the resistance by more than 1000 times.
· The basic calculation for thermistors is given below,
· The circuit below can be used to amplify the output of these devices.
· These devices are normally small and come as beads or metallized surfaces.
· The advantages of these devices include,