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Sensors / Detectors: Temperature Sensors, Page 3
Sensors / Detectors -- Main Page

Temperature Sensors:      #-C     D-L     M-P     Q-S     T     U-V

Last Updated on: Friday, July 18, 2008 11:33 AM
 

Circuits Designed by Dave Johnson, P.E. :
  • MICRO POWER OVER-TEMPERATURE ALARM
    The circuit is powered for years by a single 3 volt lithium battery. It sounds an alarm when the temperature exceeds a certain point. With some minor changes the circuit could also be configured for an under temperature (freeze) alarm. The circuit uses a cheap but accurate thermistor as the temperature sensor.

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Making High Accuracy Temperature Measurements with the 3499:  Agilent Application Note 1406  (circuit design added 7/06)

Making High-Accuracy Temperature Measurements with the 34970A Data Acquisition Unit:  Aligent Application Note  (added 4/08)

MAX1464 Signal-Conditioner, Sensor Compensation Algorithm:  App Note 3649: Maxim IC  (application note added2/06)

MAX1464's On-Chip Temperature Sensor:  App Note 3650: Maxim IC  (application note added2/06)

Measure humidity and temperature on one TTL line:  08/30/01 EDN Design Ideas  /  (added 1/05)  By combining the responses of an Analog Devices (www.analog.com) AD590 temperature sensor and a Humirel (www.humirel.com) HS1101 humidity sensor, you can generate a single TTL-level signal containing information from both sensors (Figure 1). This design uses a 74HC123 monostable multivibrator, IC1, to form a free-running oscillator. ...

Measure temperature in remote locations:  10/12/00 EDN-Design Ideas / (added 8/03)

Measuring Temperature using the Watch Dog Timer (WDT):  Microchip Application Note Published 28-Feb-01   (app note added 2/06)

Measuring Temperature with the PIC16F84A Watchdog Timer Application Note:  Microchip Application Note Published 19-Feb-02   (app note added 2/06)

Mechanics of the DS1870 Look Up Table:  App Note 3089: Maxim IC  (application note added2/06)

Micropower Thermometer:  National Semiconductor Application Notes,28-Jun-1996 / (app note added 5/02)

Migrating to the MAX6642 from Other Thermal Diode Temperature Sensors:  App Note 3641: Maxim IC  (application note added2/06)

Monitoring Multiple Temperature Nodes using TC74 Thermal Sensors and a PIC16C505:  Microchip Application Note Published 24-Oct-01   (app note added 2/06)

MPU temperature meter #3:  Multi point diode temperature meter to replace thermister temperture meter. This is for diode temperture sensors icludes on-die thermal diode of micro-processor.  (circuit design added 7/06)

MPU temperature meter:  Multi point temperature meter which displays tempertures to an LED display with time divided. This is good for monitoring temperature of PC components.  (circuit design added 7/06)

Multi-Zone Temperature Monitoring with the TCN75 Thermal Sensor:  Microchip Application Note Published 15-Oct-01   (app note added 2/06)

Network imitates thermocouples:  11/08/01 EDN Design Ideas  /  (added 1/05)  Thermocouples find widespread use for temperature measurement in systems. During system design or testing, you must observe the system's response at different temperatures. However, it's inconvenient to heat a thermocouple every time you need to check a system's performance. You can use the simple trick of touching the thermocouple with a hot soldering iron, but this method provides only ... ...

Networked Temperature Monitoring:  App Note 198: Maxim IC  (application note added2/06)

Noise Filtering and the ADT7461:  AN-699 Analog Devices Application Notes  (app note added 2/06)

Novel circuit isolates temperature sensor from its host:  8/3/06  EDN Design Ideas  /  (added 10/06)  Temperature-to-period converter and transformer driver provide power and signal isolation.

Oscillator Circuits for RTD Temperature Sensors:  Microchip Application Note Published 17-May-04   (app note added 2/06)

Oscillators Convert Temperature to Time:  03/30/95 EDN-Design Ideas / (added 03/03)

Overview of 1-Wire Technology and Its Use:  App Note 1796: Maxim IC  (application note added2/06)

Parallel port provides high resolution temperature sensing:  10/03/02 EDN Design Ideas  /  (added 1/05)  High-resolution temperature sensing at low cost is possible using only one chip attached to the PC's parallel port (Figure 1). The Dallas Semiconductor (www.dalsemi.com) DS1722 digital thermometer allows measurement resolution as fine as 0.0625°C in digital form and with linear response. The accuracy specification is only 2°C, but you can improve this figure by careful calibration....

PC Based thermometer Based on Dallas DS1621:  (circuit / schematic added 6/05)

PC Thermometer #2:  (electronic circuit added 09/05)

PC thermometer using PC game (joystick) port:  (electronic circuit added 4/05)

Portable Temperature Monitoring Demystified:  App Note 1754: Maxim IC  (application note added2/06)

Positive Analog Feedback Compensates PT100 Transducer:  App Note 3450: Maxim IC  (application note added2/06)

Practical Temperature Measurements:  Agilent Application Note   (circuit design added 7/06)

Precision Temperature Measurement Technical Brief:  Microchip Application Note Published 15-Oct-01   (app note added 2/06)

Precision Temperature Sensing with RTD Circuits:  Microchip Application Note Published 27-Jul-04   (app note added 2/06)

Programmable Universal Filter Implements C-Message Weighting Function:  App Note 11: Maxim IC  (application note added2/06)

Pseudologarithmic thermistor signal conditioning spans wide temperature range:  1/6/05   EDN-Design Ideas / (added 5/05)

Temperature Sensors:      #-C     D-L     M-P     Q-S     T     U-V

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