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Questions tagged [inductance-measurement]

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11
votes
3answers
857 views

Methods to measure inductance with high (1%) precision using standard equipment?

I am modeling the fine behavior of interacting oscillatory circuits. I have looked up a couple of methods for measuring inductance. I believe I am following the procedure faithfully, but the values I ...
0
votes
0answers
17 views

Measuring inductance of a BLDC motor

I'm trying to drive a BLDC motor typically found in a hoverboard. I don't have much information about the motor since there was no spec sheet that came with it. Only that it is a 350W, 36V motor. I'm ...
1
vote
2answers
70 views

Measuring Inductance

I have been looking the number of methods to measure inductance of a coil if you don't have an LCR meter available, and I have had some difficulty. I designed and built a coil and I would like to ...
1
vote
2answers
492 views

How to check ferrite beads?

I faced with a problem of checking ferrite bead with parameters: The measurements for two reels of this component have difference in Resistance and inductance: Reel 1: Resistance: 170 mOhm, ...
0
votes
0answers
31 views

Estimating the complex impedance from voltage and current time series

I'm trying to measure the impedance across a motor coil as the inductance changes with shaft angle. With a relatively fine encoder (1600CPR), a function generator and an ADC, I have the current ...
1
vote
5answers
315 views

Detect if coil is near steel piece using MCU

How to detect inductance change using MCU (lowest power methods preferred). I want to detect if the coil touches steel piece (higher inductance) and when it does not (lower inductance). Basically I ...
0
votes
2answers
90 views

Air-core transformer measurement using LCR meter

Is it possible to measure the magnetizing and leakage inductances of an air-core transformer (coupled coils with no ferrite core) normally using LCR meter? I want to get the values of magnetizing ...
3
votes
2answers
377 views

How do I measure the Inductance

How do I measure the inductance of this air round coil attached to the antenna of a tube radio? I have read something about LC tank circuit here but im not sure how I would apply it. Would I use the ...
3
votes
1answer
1k views

Determining inductance using a multimeter

I'm having a hard time understanding why one couldn't measure the inductance of a coil using a simple multimeter capable of measuring AC voltages and currents: simulate this circuit – Schematic ...
2
votes
1answer
317 views

Measuring Quality Factor of an Ideal Inductor

For my lab work, I have to design a method to measure the quality factor of an ideal inductor between 1MHz to 5MHz, away from resonance frequency. We know that an ideal inductor has the form (with a ...
0
votes
1answer
1k views

How do multimeters measure inductance?

I know that some multimeters measure capacitance by applying a constant current in a time Delta t, measuring the voltage difference before and after the current was applied, and solving I = C * (...
0
votes
1answer
131 views

Can I measure resistance of an inductor on a bridge?

I designed a circuit to have a Q-factor of 15, knowing the inductor value I rearranged the equation \$\omega_o=\frac{1}{\sqrt{LC}}\$ to give me a capacitor value for a certain resonant frequency. When ...
1
vote
2answers
2k views

4 channel inductance meter with LM339

I'm working on project where I would like to measure inductance of 4 different springs (to measure weights) using uC - Arduino. I found out that you can do that by measuring frequency of LC circuit ...
0
votes
2answers
328 views

0.01mh-20H, Is that a good range for an inductance meter?

Inductance meters are relatively expensive for a student to afford,so, I decided to buy ECR-T4 tester which happens to test inductors and measude their inductance. I have no idea about its accuracy ...