What Is The Value Of Resistor R?

What Is The Value Of Resistor R?

What Is The Value Of Resistor R?

The value of the resistor depends upon the current and voltage. It is a temperature detector that depends upon a change in electrical resistance. It measures the temperature with the help of the resistance of metal changes.  Resistor most commonly uses platinum metal because of chemical inertness, resistance and temperature relationship, and stability.

The core of resistance is the heart of the Resistor. This device measure the overall properties and construction of the Resistor. And the role of the Resistor system in bridge circuits. It will proves to measure the temperature by using Resistor.

If you do not know how to calculator the value of the resistor, then keep reading; this article will be helpful for you.

Working Principle Of The Resistor

It is a device that is used for estimating high temperatures. The important characteristic of this temperature sensor is the effect on resistance and the temperature increases. It has positive coefficients, and it is manufactured with a platinum wire.

 Most commonly, the NOMINAL RESISTANCE of platinum Resistor is 100 ohms at the temperature of 0©. The tolerances of RTD vary with the standards, and a manufacturer Resistor is needed when high precision over a high-temperature limit is needed.

Calculation of the value of the resistor

The resistor measures the temperature most accurately and in a shorter time. It is a linear device. The device comprises Resistor (Resistance Detective Sensor) and signals observing circuit. In this experiment, RTD made up of platinum 100 is used, and the Resistor is covered with stainless steel to be inserted in a GAS or LIQUID to detect the heat.  


The resolution is maintained at 0.292-0.39 ohm/©. The Resistor sensor is connected to the data input of the transmitter amplifier. The current from the Amplifier incorporates a range of value. The wind is  the detecting unit of the Resistor that is heated.

The procedure of detecting the resistor value

It is the digital and physical property of the alloys of metal and the device to which this system is fabricated. It increases the average resistance per unit temperature change between the ice point and boiling point of water. According to studies, the temperature of the Resistor is measured from -200-650©, and the Resistor is known for high precision and accuracy.

  • As the switch SW-4 opens, evaluate the resistance of the Resistor detector at room temperature Estimate across TP49 and TP50.
  • Now turn on the 10-ohm resistor with the SWG-1 switch closed. Give 2-3 minutes for the heating unit to warm, then place the Resistor step to the heating unit and continue to evaluate the resistance of the Resistor and calculate the value after 1 minute of the heating element.
  • Now permit the Resistor detector to cool it again. Close the switch SWG-4 and link to the Resistor to the lower point of the Amplifier. The detector is used to maintain the current employing Amplifier. Now give the power to 10VDC, set R1 In a clockwise position, and then attach the meter of 1m A to TP51-TP52.
  • When the detector is placed again next to the heating unit, the resistance of the sensor increases or decreases, and also the temperature
  • Now provides the heat to the Resistor element for just 1 minute and then record the readings R OF optimum temperature above 0©

Applications of the resistor

Resistors have broad applications, ranging from the crucial tools in microcontrollers to instrumentation for measuring systems. A few applications are listed below.

Series or parallel resistors

Resistors are commonly generally assembled in digital systems. A possibility will merge many resistors to the average curve (E-series) to achieve a specific impedance. The latest over each thermistor would be the same in a transmission line, and the capacitive reactance is the summation of the two resistors. The output over each resistor would be the same in equivalent circuits.

Electric current is measured (shunt resistor)

The electric potential over a pinpoint accuracy potentiometer with a high tolerance attached to the capacitor can be used to calculate electromotive force. Thermal dynamics law is used to calculate this same current. This is with an ampere or shunt potentiometer.

Customarily, an accurate manganin thermistor with resistance is used. The change in resistance of metallic wire and temperature can be analyzed for any wire. In this way, a pierce platinum resistance is supplied with resistance that directly provides a digital sign.

 LED resistors

Light emitting diode lights follow a particular current to function. A low modern will not beam the LED, whereas a current flowing may cause the machine to catch fire. As a result, they are commonly wired in parallel with thermistors to control the current. Loading thermistors are used to restrict the power of a signal complacently.

Resistor for the blower motor

The air exhaust in automobiles is activated by a supporter that is powered by the turbocharger. A unique potentiometer controls the turbine speed. This alludes to the electric machine resistor. Various designs have been used. Each configuration creates a collection of optimizations circuit elements of varying sizes with each rotation speed. An adequately connected circuit on such circuit boards is used in a further configuration.

Resistor coding’s for color

Multiple colored strands around the constituent body suggest the measured value and sensitivity. This electric device  was invented in the 1920s. Publishing software when it was in its early stages, making printed quantitative codes on discrete pieces difficult. The green color code is mainly used for that many lateral thermistors up between one-watt tod


It is the most accurate device for evaluating high temperature and creates analogous with the hybrid approach. Electrical resistant thermometers manipulate on principle, increasing that when metallic wire heats, the electrical resistance can also be increased relatively as temperature increases.

The change in resistance of metallic wire and temperature can be measure for any wire. In this way, a pierce platinum resistance is supplied with a power and network resistance that directly provides a digital sign.