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Sensors / Detectors: Temperature Sensors

Temperature Sensors:      #'s - A      B - G      H - L      M - Q      R - S      T - Z


Sensors / Detectors -- Main Page


Last Updated: October 24, 2017 02:55 PM

Circuits Designed by Dave Johnson, P.E. :
High Temperature Thermocouple activates Relay -  Voltage from a high temperature thermocouple activates a relay when the sensor detects a temperature above 1000 degrees F . . . Hobby Circuit designed by David Johnson P.E.-July, 2006

Capacitance Proximity Switch
Draws very low power - Ideal for battery-powered applications
6 Models Available - Call 806-368-7747


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

Heat Control Unit -  This circuit will turn the heater on when the temperature of water falls below the lower limit set by you and turn it off when the temperature increases above the higher...__ Electronics Projects for You

Heat Sensitive Switch -  At the heart of this heat-sensitive switch is IC LM35 (IC 1) , which is a linear temperature sensor and linear temperature-to-voltage converter circuit.  The converter provides accurately linear and directly proportional output signal in millivolts over the temperature range of 0C to 155C.  it develops an output voltage of 10 mV per degree centigrade change in__ 

Heat Sensor -  The Thermistor, or NTC (Tony van Roon's Negative Temperature Coefficient) of 10K, is a standard type.  Most types will work.  The one in the diagram is a 10K model made by Fenwal (Tony van Roon's #197-103LAG-A01)  __ Designed by Tony van Roon  VA3AVR

Heat-Sensitive Switch -  At the heart of this heat-sensitive switch is IC LM35 (IC 1) , which is a linear temperature sensor and linear temperature-to-voltage converter circuit.  The converter provides accurately linear and directly proportional output signal...__ Electronics Projects for You

High Resolution Battery-Powered Robust Type K Thermocouple Signal Conditioning Amplifier with Cold Junction Compensation -  The circuit is used as a plug-in adapter for common digital multimeters and is completely portable.  This circuit employs the LT1025 thermocouple compensator to improve accuracy over a wide range of ambient conditions and is mounted close to the thermocouple connection points for optimal thermal tracking.  it precludes the need __ Linear Technology/Analog Devices App Note, Apr 8th 2010

High Resolution Type S Thermocouple Digitizer with Improved Cold Junction Compensation -  This simple interface circuit that demonstrates the practicality of direct thermocouple connection to the LTC2400 using low output voltage thermocouples (a Type S thermocouple, as shown, produces a full-scale output voltage of 18mV).  This circuit uses the LT1025, a micropower thermocouple cold junction compensator, to sense __ Linear Technology/Analog Devices App Note, Apr 8th 2010

High Temperature Alarm -  The high temperature alarm will beep and LED blinks when the temperature of the device increases abnormally.  This simple over heat alarm is to monitor heat generating devices such as motor, inverter etc.  The circuit is a simple astable multivibrator using the low power CMOS timer IC 7555 which is the low power version of the __ Designed by D Mohankumar

High Temperature Thermocouple activates Relay -  Voltage from a high temperature thermocouple activates a relay when the sensor detects a temperature above 1000 degrees F . . . Hobby Circuit designed by David Johnson P.E.-July, 2006

High Voltage/Current & Temperature Monitoring -  The LTC2990 is used to monitor system temperatures, voltages and currents. Through the i2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. The internal 10ppm/C reference minimizes the number of supporting components and area required. Selectable address and configurable functionality give the LTC2990 flexibility to be incorporated in various systems needing temperature, voltage or current data.__ Linear Technology/Analog Devices App Note, Oct 26th 2010

High-Temperature Thermometer/Thermostat -  Need to measure or control temperature over a very wide range? Now you can do it with this compact unit which hooks up to a K-type thermocouple.  it drives a relay which can be used to precisely control the temperature in ovens, kilns, autoclaves, solder baths or at the cold end of the spectrum, fridges and freezers.  it is based on an Analog Devices AD8495 precision instrumentation amplifier with thermocouple cold junction compensation.__ SiliconChip

Hot Water Tank Indicator -  The idea for this project may have come to me in a flash of inspiration, and its a very simple way to check if a fuse has blown without removing it from its holder __ Designed by Andy Collison

How to Interpret DS1847/DS1848 Temperature Readings -  App Note 216: IC __ Maxim Integrated

How to Make a Thermocouple Meter with the LTC2492 -  This video explains how to use the 24-bit LTC2492 2-channel delta-sigma analog-to-digital converter with Easy Drive input Current Cancellation to make thermocouple measurements.  The ADCs features and benefits are discussed, as is cold junction compensation; this is followed by a lab demonstration of the LTC2492 thermocouple __ Linear Technology/Analog Devices App Notes, Mark Thoren-Applications Engineering Manager-Mixed Signal Products Sep 15th 2008

Humidity & Temperature Monitoring using Arduino with the IoT -  Using the internet of Things (ioT) in homes and industries it is possible to control any electrical or electronic equipment.  Moreover, you can get the information from any sensor and analyse...__ Electronics Projects for You

IC & DMM form direct-read-out temperature probe -  09/01/06 EDN Design Ideas:  Simple circuit yields linear voltage-versus-temperature output __ Circuit Design by Alfredo H Saab and Bich Pham, Maxim Integrated Products Inc, Sunnyvale CA

IC Diodes Help Deduce Junction Temperature -  07/07/94 EDN Design Ideas:  A simple method for directly measuring an IC 's temperature uses the device's input-protection diodes as temperature sensors.  Static-discharge protection diodes are common features in many modern IC input structures, and their location on the IC makes them ideal as noninvasive temperature sensors __ Circuit Design by Edward S Brinkman, Cincinnati Electronics Corp, Mason, OH

IC removes nonlinear temperature effects -  09/25/03 EDN Design Ideas:  A common technique for removing nonlinear temperature-related effects from a dc voltage is to incorporate a temperature sensor that a microprocessor samples via an A/D converter.  The processor determinesby mathematical calculation or a temperature-indexed look-up tablethe amount of adjustment is necessary at a given temperature and delivers the resulting value via a D/A converter __ Circuit Design by Kevin Schemansky, Maxim Integrated Products, Howell, MI

Internal Temperature Sensor -  The LTC2997 is a high-accuracy analog output temperature sensor. it converts the temperature of an external sensor or its own temperature to an analog voltage output.__ Linear Technology/Analog Devices App Note, Jul 7th 2011

Introduction to acoustic thermometry -  04/21/11  EDN Technical Article: Use an ultrasonic transducer to measure air temperature in an olive jar.   __ Circuit Design by Jim Williams, EDN's most revered contributor, passed away in June 2011 after a stroke.  He was 63.

Introduction to Acoustic Thermometry -  Linear Technology AN131 __ Designed by Jim Williams - Apr 26th, 2011

IR Digital Thermostat for FAN -  This circuit measures temperature in Celsius scale and displays it on an alphanumeric LCD screen When temperature rise to 40 C an alarm is activated and at the same time a relay is also activated which drives a fan to keep the temperature at a level __ Contact IQ Technologies

Isolated 4-Channel, Thermocouple/RTD Temperature Measurement System with 0.5C Accuracy  -  Turn on the 6 V power supply to power up the evaluation board and SDP board, then plug in the Mini-USB cable into the Mini-USB port on the SDP board.  , Test Launch the evaluation software.  in order for another controller to be used with the EVAL-CN0287-SDPZ evaluation board, software must be developed by a third party.  , CiRCUiT EVALUATiON AND TEST __ Analog Devices from the Lab

LCD thermometer -  in this page, I introduce the LCD thermometer which is sold by "AkizukI DenshI Tsusho".  At this thermometer, the IC thermo sensor (S8100) or the diode (1S1588) is used as the thermo sensor.  When using the IC thermo sensor, the thermometry to +100C from -40C is possible.  Also, when using the diode, the measurement to +150C from -20C is possible.  Both sensors are contained in the kit.   __ Designed by Seiichi Inoue

LCD thermometer using PIC16F871 -  Build your own temperature meter for fun.  This project uses the Microchip TC77 digital temperature sensor,  a PIC 16F871 microcontroller and a 7-segment 3˝ digit LCD.  You can study the source code on how to drive an LCD display.   __ Designed by Peter Jakab

LED Thermometer -  This LED thermometer is designed for in home use, to read temperatures between about 60 and 78 degrees Fahrenheit.  it is based around a precision temperature sensor IC , the LM34DZ.  This sensor require no calibration and can measure temperatures of between -50F and +300F.  While the circuit shown here does not use the full range of that sensor, it can be modified to do so by simply changing the voltage reference to U2 at the sacrifice of precision. __ Designed by Aaron Cake

Linear Thermometer -  T1 has a built in pair of thermistors with linearizing resistors custom scaled for a specific temperature range.  , 0C to 100C in this example.  The flying capacitor LTC1043 eliminates any dc loading on the precision network to maintain linearity over the entire temperature range.  Amplifier gain is scaled to provide an output __ Linear Technology/Analog Devices App Note, Jun 21st 2011

Linearize thermistors with new formula -  EDN Design Ideas:  03/03/2014     Optimize thermistor performance at any preferred temperature __ Circuit Design by Mark Biegert

Linearized NTC Thermistor -  (spice design)  __ Designed by Rick 

Linearized Platinum Resistance Thermometer with 0.025C Accuracy Over 0 to 100C -  Platinum RTD's are typically driven with a constant current so that their resistance value directly translates to a temperature dependant voltage.  Here the LT1001 and the LM129 create a constant current through the input 10K resistor which all flows through the sense resistor.  A second amplifier inverts the signal to provide __ Linear Technology/Analog Devices App Note, Jun 21st 2011

Linearizes & Convert Thermistor Data -  12/07/95 EDN Design Ideas:  Although the response of thermistors is inherently nonlinear, you can make the devices' resistance over a selected range of temperatures linear.  You can convert the thermistor value to a voltage for display on either a DMM or a panel meter.  The circuit in Figure 1 performs linearization and provide as gain and offset for a YSI 44031 thermistor, whose nominal resistance is 10 k[ohm] at 25C.    __ Circuit Design by Matthew Beckner, Ball Corp Boulder, CO

Link Neatly Measures Temperature -  10/26/00 EDN Design Ideas:  Figure 1 shows a convenient and neat way to measure temperature using the USB of a PC.  An ADM1023 IC senses the temperature, and an Anchor Chips EZ-USB AN2131SCC provide as control.  The ADM1023 is a low-cost device with an accuracy of 1C and a resolution of 0.125C.  The IC is a two-channel device that can measure its own local temperature and the temperature of a remote location __ Circuit Design by Mary Burke, Analog Devices, Limerick, Ireland

Liquid-Level Indicator -  The LTC2990 is used to monitor system temperatures, voltages and currents.  Through the i2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC.  The internal 10ppm/C reference minimizes the number of supporting __ Linear Technology/Analog Devices App Note, Mar 16th 2011

LM35 termometer -  an adjustment termometer by LM35 this file simulated by Proteus 7.2 and micro program is on Bascom __ Designed by rajbai.somee.com

LTC Design Note: Determine balancing current for the LTC3305 lead-acid battery balancer -  EDN Design Ideas:  06/29/2016    Delve into PTC thermistor intricacies to optimize battery-balancing designs __ Circuit Design

LTC1392 Monitors System Temperature & Multiple Supply Voltages & Currents -  DN149 Design Notes__ Linear Technology/Analog Devices

LTC1392: Temperature & Voltage Measurement in a Single Chip -  DN106 Design Notes__ Linear Technology/Analog Devices

LTC2057 Differential Thermocouple Amplifier -  The LTC2057 is a high voltage, low noise, zero-drift operational amplifier that offers precision DC performance over a wide supply range of 4.75V to 36V or 4.75V to 60V for the LTC2057HV.  Offset voltage and 1/f noise are suppressed, allowing this amplifier to achieve a maximum offset voltage of 4μV and a DC to 10Hz input __ Linear Technology/Analog Devices App Notes, Jun 19th 2013

LTC2990-Motor Protection/Regulation -  The LTC2990 is used to monitor system temperatures, voltages and currents. Through the i2C serial interface, the device can be configured to measure many combinations of internal temperature, remote temperature, remote voltage, remote current and internal VCC. __ Linear Technology/Analog Devices App Note, Oct 26th 2010


Temperature Sensors:      #'s - A      B - G      H - L      M - Q      R - S      T - Z

 


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