Thermistor Circuits
Last Updated on:
Monday, April 16, 2012 08:04 AM |
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Circuits Designed by Dave Johnson, P.E. : |
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Freezing Temperature Alarm
This circuit turns on a beeper whenever the outside air temperature is less than
zero degrees Centigrade. The circuit draws only a few microamps from a 9 volt
battery. It uses a glass bead thermistor accurate to 1 degree C.
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Freezer Over-Temperature Alarm
This electronic hobby circuit below is designed to activate a beeper alarm,
whenever the outside air temperature is below 0 degrees C (32F). A 9v battery
powers the hobby circuit. The average 9ua current is so low that the battery
should last for many years....
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Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
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Freezing Temperature Alarm - This circuit turns on a beeper whenever the
outside air temperature is less than zero degrees Centigrade. The circuit draws
only a few microamps from a 9 volt battery. It uses a glass bead thermistor
accurate to 1 degree C.... [Hobby Corner Circuit by Dave Johnson] |
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Inductively Coupled Thermistor - Microchip Application Note Published
21-Jul-02 (app note added 2/06) |
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Pseudologarithmic thermistor signal conditioning spans wide temperature range -
6-Jan-05 Issue of EDN Given its low cost, small size, robust construction,
accuracy, versatility and sensitivity, it's no wonder that the thermistor rates as one
of the most popular temperature sensors available. However, in some applications, a
thermistor can exhibit too much sensitivity for wide-range temperature
measurements.... [Design Idea by Stephen Woodward, University of North Carolina,
Chapel Hill, NC] |
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Simple Thermistor Interface to an ADC - Maxim Application Notes / 1753 /
Oct-03....[App Note] |
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Temperature-to-period circuit provides linearization of thermistor response -
10-Nov-05 Issue of EDN Highly accurate pulsewidth varies with temperature....
[Design Idea by S Kaliyugavaradan, Anna University, Madras Institute of Technology,
Chennai, India; Edited by Brad Thompson and Fran Granville] |
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Thermistor Preamp - ....(spice design added 02/09) |
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Thermistor Temperature Sensing with MCP6S2X PGA - Microchip Application Note
Published 11-Feb-04 (app note added 2/06) |
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Thermistor Temperature Sensing with MCP6SX2 PGAs - Microchip Application
Note Published 21-Oct-04 (app note added 2/06) |
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Thermistors in Single Supply Temperature Sensing Circuits - Microchip
Application Note Published 27-Jul-04 (app note added 2/06) |
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Thermistor Circuits
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