# Anderson bridge used to measure self-inductance.

• angel23
In summary, the conversation discusses a modified version of Maxwell's L - C bridge called Anderson's bridge, which is used for accurately measuring self-inductance. The method involves using known capacitance and resistances to measure the unknown self-inductance. The formula for calculating the inductance is also provided, along with instructions for conducting the experiment in the lab. The person speaking offers to provide further details if needed.
angel23
how does it work?? i am really too confused and can't understand its idea.

can anyone help??

angel23 said:
how does it work?? i am really too confused and can't understand its idea.

can anyone help??

It is a modification of Maxwell’s L - C
bridge. In this bridge, double balance is obtained by the variation of resistances only, the
value of capacitance being fixed.
Anderson’s bridge is the most accurate bridge used for the measurement
of self – inductance over a wide range of values, from a few micro-Henries to several
Henries. In this method the unknown self-inductance is measured in terms of known
capacitance and resistances.
go in your EIM lab and take experiment manual in place of DETECTOR you can use HEAD PHONE and then measure its self-inductance...

i give you a brief explanation ...

the inductance of given coil L = C [ ( R1+ R2 ) R5 + R2R4 ] mH (it is formula to obtain unknown inductive resistance )

Where C = Capacity of the standard capacitor ( µ F )
R2,R3,R4 = Known, fixed and non – inductive resistances (KΩ)
R1, R5 = Variable resistances ( KΩ )
see diagram in your book..
go in your EIM lab and take experiment manual in place of DETECTOR you can use HEAD PHONE and then measure its self-inductance...

Last edited:
Further details then ask me...

## 1. What is an Anderson bridge?

The Anderson bridge is a type of electrical circuit used to measure the self-inductance of a coil. It was invented by the American physicist, William S. Anderson.

## 2. How does an Anderson bridge work?

The Anderson bridge works by comparing the unknown self-inductance of a coil to a known capacitor and resistor. By adjusting the values of these components, the bridge can be balanced, and the self-inductance can be calculated using the bridge formula.

## 3. What is self-inductance?

Self-inductance, also known as inductance, is a property of a circuit element (such as a coil) that describes its ability to store energy in the form of a magnetic field when a current passes through it.

## 4. Why is the Anderson bridge used to measure self-inductance?

The Anderson bridge is used to measure self-inductance because it is a highly accurate and precise method. It is also relatively easy to set up and can measure a wide range of inductance values.

## 5. Are there any limitations to using the Anderson bridge for measuring self-inductance?

Yes, there are a few limitations to using the Anderson bridge. It is not suitable for measuring very small or very large inductance values, and it may not be accurate for non-linear or non-ideal components. Additionally, the bridge can be affected by external electromagnetic interference.

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