Measurement of Inductance by Anderson Bridge | Summary and Q&A

TL;DR

Anderson's Bridge is a popular and important bridge used to measure self inductance by comparing it with a standard capacitor.

Key Insights

• 🤳 Anderson's Bridge is a modification of the Maxwell inductance capacitance bridge used to measure self inductance.
• 🦾 The bridge consists of four arms with known and unknown impedances, which are combinations of resistance, inductance, and capacitance.
• ⚖️ Balance in Anderson's Bridge is achieved when the null deflection is obtained, and the balance equation is z1z4 = z2z3.
• 👻 Anderson's Bridge allows measurement of self inductance in terms of a fixed standard capacitor.
• 😄 The bridge offers advantages such as measuring a wide range of inductances, accurate capacitance measurement, and ease of obtaining balance.

Transcript

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Questions & Answers

Q: What is Anderson's Bridge used for?

Anderson's Bridge is used to measure self inductance by comparing it with a standard capacitor.

Q: How does Anderson's Bridge achieve balance?

Anderson's Bridge achieves balance when the null deflection is obtained, indicating that the bridge is in a balanced state.

Q: What are the advantages of using Anderson's Bridge?

The advantages of Anderson's Bridge include its ability to measure a wide range of inductances, accurate measurement of capacitance in terms of inductance, and ease of obtaining balance compared to other bridges.

Q: What are the disadvantages of Anderson's Bridge?

The main disadvantage of Anderson's Bridge is its complexity and the difficulty in shielding the bridge due to the involved components and junction point.

Summary & Key Takeaways

• Anderson's Bridge is a modification of the Maxwell inductance capacitance bridge used to measure self inductance.

• The bridge consists of four arms with known and unknown impedances, which are combinations of resistance, inductance, and capacitance.

• The bridge is considered balanced when the null deflection is obtained, and the balance equation for the bridge is z1z4 = z2z3.