Half Scale Resistance for Shunt Type Ohmmeter Calculator

✖Shunt Resistance is a type of resistor specifically designed to divert or shunt a known portion of electrical current away from a primary circuit.ⓘ Shunt Resistance [R_s]			+10% -10%
✖Meter Resistance refers to the internal resistance of a measuring instrument. This resistance is inherent to the design of the instrument and affects the accuracy of measurements made by the device.ⓘ Meter Resistance [R_m]			+10% -10%

✖Half Scale Resistance refers to the resistance value halfway between the maximum and minimum resistance of a variable resistor or potentiometer, typically used to calibrate or set reference points.ⓘ Half Scale Resistance for Shunt Type Ohmmeter [R_h]

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Formula

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Half Scale Resistance for Shunt Type Ohmmeter

Formula

R h = \frac{R s \cdot R m}{R s + R m}

Example

25 Ω = \frac{37.5 Ω \cdot 75 Ω}{37.5 Ω + 75 Ω}

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Half Scale Resistance for Shunt Type Ohmmeter Solution

STEP 0: Pre-Calculation Summary

Formula Used

Half Scale Resistance = (Shunt Resistance*Meter Resistance)/(Shunt Resistance+Meter Resistance)
R_h = (R_s*R_m)/(R_s+R_m)
This formula uses 3 Variables

Variables Used

Half Scale Resistance - (Measured in Ohm) - Half Scale Resistance refers to the resistance value halfway between the maximum and minimum resistance of a variable resistor or potentiometer, typically used to calibrate or set reference points.
Shunt Resistance - (Measured in Ohm) - Shunt Resistance is a type of resistor specifically designed to divert or shunt a known portion of electrical current away from a primary circuit.
Meter Resistance - (Measured in Ohm) - Meter Resistance refers to the internal resistance of a measuring instrument. This resistance is inherent to the design of the instrument and affects the accuracy of measurements made by the device.

STEP 1: Convert Input(s) to Base Unit

Shunt Resistance: 37.5 Ohm --> 37.5 Ohm No Conversion Required
Meter Resistance: 75 Ohm --> 75 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_h = (R_s*R_m)/(R_s+R_m) --> (37.5*75)/(37.5+75)

Evaluating ... ...

R_h = 25

STEP 3: Convert Result to Output's Unit

25 Ohm --> No Conversion Required

FINAL ANSWER

25 Ohm <-- Half Scale Resistance

(Calculation completed in 00.004 seconds)

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Created by Nikita Suryawanshi

Vellore Institute of Technology (VIT), Vellore

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< Shunt Type Calculators

Meter Current for Shunt Type Ohmmeter

Go Meter Current = (Source Voltage*Unknown Resistance)/(Shunt Resistance*Meter Resistance+Unknown Resistance*Shunt Resistance+Unknown Resistance*Meter Resistance)

Half Scale Resistance for Shunt Type Ohmmeter

Go Half Scale Resistance = (Shunt Resistance*Meter Resistance)/(Shunt Resistance+Meter Resistance)

Fraction of Full Scale Current for Shunt Type Ohmmeter

Go Fraction Value = Unknown Resistance/(Unknown Resistance+Meter Resistance)

Half Scale Resistance for Shunt Type Ohmmeter Formula

Half Scale Resistance = (Shunt Resistance*Meter Resistance)/(Shunt Resistance+Meter Resistance)
R_h = (R_s*R_m)/(R_s+R_m)

What is Half Scale Operation?

If the unknown resistance is adjusted such that the basic meter in the ohmmeter shows half of full scale reading, It is called Half Scale Operation.

How to Calculate Half Scale Resistance for Shunt Type Ohmmeter?

Half Scale Resistance for Shunt Type Ohmmeter calculator uses Half Scale Resistance = (Shunt Resistance*Meter Resistance)/(Shunt Resistance+Meter Resistance) to calculate the Half Scale Resistance, The Half Scale Resistance for Shunt Type Ohmmeter formula is defined as the resistance value that would produce a half-scale deflection of the meter when connected in parallel with the meter movement and the unknown resistance being measured. Half Scale Resistance is denoted by R_h symbol.

How to calculate Half Scale Resistance for Shunt Type Ohmmeter using this online calculator? To use this online calculator for Half Scale Resistance for Shunt Type Ohmmeter, enter Shunt Resistance (R_s) & Meter Resistance (R_m) and hit the calculate button. Here is how the Half Scale Resistance for Shunt Type Ohmmeter calculation can be explained with given input values -> 1.710098 = (37.5*75)/(37.5+75).

FAQ

What is Half Scale Resistance for Shunt Type Ohmmeter?

The Half Scale Resistance for Shunt Type Ohmmeter formula is defined as the resistance value that would produce a half-scale deflection of the meter when connected in parallel with the meter movement and the unknown resistance being measured and is represented as R_h = (R_s*R_m)/(R_s+R_m) or Half Scale Resistance = (Shunt Resistance*Meter Resistance)/(Shunt Resistance+Meter Resistance). Shunt Resistance is a type of resistor specifically designed to divert or shunt a known portion of electrical current away from a primary circuit & Meter Resistance refers to the internal resistance of a measuring instrument. This resistance is inherent to the design of the instrument and affects the accuracy of measurements made by the device.

How to calculate Half Scale Resistance for Shunt Type Ohmmeter?

The Half Scale Resistance for Shunt Type Ohmmeter formula is defined as the resistance value that would produce a half-scale deflection of the meter when connected in parallel with the meter movement and the unknown resistance being measured is calculated using Half Scale Resistance = (Shunt Resistance*Meter Resistance)/(Shunt Resistance+Meter Resistance). To calculate Half Scale Resistance for Shunt Type Ohmmeter, you need Shunt Resistance (R_s) & Meter Resistance (R_m). With our tool, you need to enter the respective value for Shunt Resistance & Meter Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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