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The resistance-temperature relationship of an NTC thermistor can be approximately described using the following equation: R(T)= a*exp(B/T),...

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Electrical Engineering

The resistance-temperature relationship of an NTC thermistorcan be approximately described using the following equation:
R(T)= a*exp(B/T), a=0.1865 & B=2,946K
Design a voltage divider as the signal conditioning circuitfor the negative temperature coefficient thermistor. Your circuitshould use a 5v power supply. It should produce a positive voltagesignal with a reading of approximately 4v at 100 degrees Celsiusand the lower readings at lower temperatures. Draw the circuitschematic. Use the symbol for an adjustable resistor to representthe thermistor. Specify the values of each component in the voltagedivider. show your calculations.

Answer & Explanation Solved by verified expert
4.3 Ratings (937 Votes)
A voltage divider is a simple circuit whichturns a large voltage into a smaller one Using just two seriesresistors and an input voltage we can create an output voltagethat is a fraction of the input Voltage dividers are one of themost fundamental circuits in electronics If learning Ohms law waslike being introduced to the ABCs learning about voltage dividerswould be like learning how to spell catCovered in this TutorialWhat a voltage divider circuit looks likeHow the output voltage depends on the input voltage and dividerresistorsHow voltage dividers behave in the realworldReallife voltage divider applicationsSuggested ReadingThis tutorial builds on basic electronics knowledge If youhavent already consider reading these tutorialsWhat is a circuitSeries and Parallel CircuitsVoltage Current Resistance and Ohms LawAnalog vs DigitalHow to Use a MultimeterHow to Use a BreadboardAnalogtoDigital ConversionIdeal Voltage DividerThere are two important parts to the voltage divider thecircuit and the equationThe CircuitA voltage divider involves applying a voltage source across aseries of two resistors You may see it drawn a few different waysbut they should always essentially be the same circuitExamples of voltage dividerschematics Shorthand longhand resistors at samedifferentangles etcWell call the resistor closest to the input voltage Vin R1and the resistor closest to ground R2 The voltage drop across R2is called Vout thats the divided voltage our circuit exists tomakeThats all there is to the circuit Vout is our divided voltageThats whatll end up being a fraction of the input voltageThe EquationThe voltage divider equation assumes that you know three valuesof the above circuit the input voltage Vin and both resistorvalues R1 and R2 Given those values we can use this    See Answer
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