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# Thermister

15 Threads found on edaboard.com: Thermister

## using a thermister for temp reading

im wondering what are the missing component to make NTCLE203E3...SB0 a complete thermister

## Problem converting ADC value using Steinhart-Hart equation

Hey guys. I am trying to build a thermostat for a project, and I wanna calculate the temperature using Steinhart equation, and getting the ADC value from a voltage divider made from a 10k thermister and a 10k 1% resistor. I read the ADC value just fine, but the equation doesn't work. It worked when I was playing with Arduino, so there might be

## how to select MOV,thermister and X capacitor value....?

hi, I m a power electronics design engineer. I need to know how exactly to select the metal oxide varistor ,thermistor and X cap for a circuit.. Pls help to know and say exact formula to find out these values. 1) Metal oxide Varistor --- MOV .............? 2) Thermistor NTC for INRUSH current.................? 3) X cap for a 275VAC

## NTC Thermistor temperature Sensor using PIC16f1937

Unfortunatly, the output from the thermister is not linear. Assuming your reading in volts is R, then you could calculate the temperature with this function. const double NtcA = 0.00110653; const double NtcB = 0.00025454; const double NtcC = 0.00000016; const double AbsZero = 273.15; double Temperature; Temperature = (1 / (NtcA + NtcB

## Interfacing Thermistor with 8086 Microprocessor ! Help

63079normally thermister is connected in a resistive bridge circuit as one of the arms and measure the change in voltage accross the two points then use an ADC to convert it to digital and give it to the microprocessor you are using 8086 then interface ADC through 8255.

## Help me acquire variables for NTC thermistor equation

Hi sajjad khan, As you said you will just attach your thermister probe with Meter probe, thats a good idea just to compare. Then quality of your measuring device will be dependent to the quality of your meter. The specs also say in the temperature measuring tag : " l Included is a K-Type (nickel chromium ~ nickel silicon) point contact tempera

## Laptop cooling method

Apart from cpu control, if you see back of the fan, you see a thermister which senses air temp. Circuit in fan controls speed of the fan. If you shorten this thermister, fan runs at full speed

## Rerigerator compressor problem

The thermister is a positive temp coefficient and is in series with start winding. It drops the start winding current as it gets hot. If the motor does not reach its run rpm, the thermistor gets hotter and is temp coupled to a mechnical Klixon to shut off the power to the compressor. If grid flickers or compressor is restarted before refrigerant

## reading temperature from an fpga device (spartan 3)

how can i read the temperature so that the fpga (spartan 3) so it can turn on and off depending on the temperature? Hi, To read temperature you need ADC i dont know if spartan3 kit has on chip or on board ADC, if it has then input to ADC will be thermister voltage and depending on output of ADC you can do your needy

## DS2715 based NiMH Battery Charger

Dear Friends, I have some doubts regarding DS2715 Based NiMH battery charger. I am planning to design a DS2715 based NiMH battery charger. I have input voltage of 12VDC?0.2V and I have 7cell(7*1.2V) NiMH battery pack with thermister. For my application fast charging rate should be less than or equal to 1C, since charging time doesen&#

## DS2715 based NiMH Battery Charger

Dear Friends, I have some doubts regarding DS2715 Based NiMH battery charger. I am planning to design a DS2715 based NiMH battery charger. I have input voltage of 12VDC?0.2V and I have 7cell(7*1.2V) NiMH battery pack with thermister. For my application fast charging rate should be less than or equal to 1C, since charging time doesen̵

## Need circuit explanation

I would say that the the circuit is a fire detector . used to detect smoke through the IRopamp circuit and the heat from the thermister. The IC must be used to produce an output when output from the 2 sencers trigger the chip.

## What shall I do to stablize the Vcon of VCO to make my PLL work well?

Hi, Did you try thermister or use negative temperature coefficient cap. for temperature compensation ? Rogernt

## i need circuit for NTC type thermister

hi All i have to interface the NTC type of Thermistor with the Microcontroller. please tell me the signal conditioning circuit for NTC type thermistor

## Regarding Fire Sensor

Well I can suggest a circuit for fire detection that is simple and cost effective. Try using a thermister with a Philips 4046 IC, then use an RC circuit as guiding pulse, then use thermister pulse as the locking signal. I don't have the circuit as of now. I shall post it in some time. ~Kalyan.