How to measure a inductor

  • Thread starter Thayalan
  • Start date
  • #1
2
0
hi guys.... i quiet new here...


just wondering ,.. how to measure a inductor....
TQ
 

Answers and Replies

  • #2
berkeman
Mentor
60,424
10,732
Welcome to the PF. There are a number of ways to measure the value of an inductor. The simplest, of course, is to us some instrument like an LCR meter. Those instruments impress an AC waveform (typically 1kHz or 10kHz or 100kHz) across the inductor, and measure the resulting current.

If you don't have an LCR meter or other AC impedance-measuring device, you can do it youself with a signal generator, a resistor and an oscilloscope. Use the fact that you will get a 45 degree phase shift through the resistor-inductor series combination when the reactance of the inductor equals the value of the resistor. Are you familiar with how the reactance of the inductor varies with frequency?
 
  • #3
2
0
Can an Inductor reduce voltage
 
  • #4
berkeman
Mentor
60,424
10,732
Can an Inductor reduce voltage

Yes, in several ways. Here is some basic info on RLC circuits:

http://en.wikipedia.org/wiki/RLC_circuits

An inductor has a reactive impedance, which can interact with other impedances in a circuit and provide an AC voltage drop. A real inductor also has an associated DC resistance (DCR), which will act like any other resistor and provide a DC and AC voltage drop when a current flows through it. You usually will chose an inductor that has a small DCR compared to its reactive impedance at the frequencies of interest, though. Make sense?
 

Related Threads on How to measure a inductor

Replies
9
Views
22K
  • Last Post
Replies
10
Views
20K
  • Last Post
Replies
4
Views
21K
Replies
8
Views
4K
  • Last Post
2
Replies
34
Views
6K
  • Last Post
Replies
8
Views
2K
  • Last Post
Replies
6
Views
1K
  • Last Post
Replies
4
Views
4K
  • Last Post
Replies
2
Views
6K
  • Last Post
Replies
6
Views
8K
Top