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Gaussian Distribution:Rejecting Resistors from a Batch

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Question: Commercial resistors of 2% accuracy have a range of values with a standard deviation of 2% nominal resistance. If a particular application requires a resistor value of 1000+/- 40 ohms, how many 2% resistors will be rejected out of a batch of 1000?

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Solution Summary

This solution illustrates how for the given type of resistor, an estimation can be made regarding the number of resistors which can be rejected to fulfill a requirement. All calculations are included.

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40 ohm is of 1000 ohm = (40/1000)*100 = 4% == 2 Standard deviation.

Hence, requirement is of resistors ...

Solution provided by:
Amrit Lal Ahuja, PhD (IP)
Education
  • BEng, Allahabad University, India
  • MSc , Pune University, India
  • PhD (IP), Pune University, India
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