Can an Inductor Reduce Voltage?

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    Inductor Measure
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Discussion Overview

The discussion revolves around the properties and measurement of inductors, specifically addressing whether an inductor can reduce voltage in a circuit. It includes both theoretical aspects and practical measurement techniques.

Discussion Character

  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant inquires about methods to measure an inductor, suggesting the use of an LCR meter or a DIY approach with a signal generator, resistor, and oscilloscope.
  • Another participant explains that an inductor can reduce voltage through its reactive impedance and DC resistance, which can create voltage drops in AC and DC circuits.
  • The explanation includes a reference to RLC circuits and the importance of choosing an inductor with a small DC resistance relative to its reactive impedance.

Areas of Agreement / Disagreement

Participants present different aspects of measuring inductors and their voltage-reducing properties, but there is no explicit consensus on the implications or applications of these properties.

Contextual Notes

Some assumptions about the frequency dependence of inductors and the specific conditions under which voltage reduction occurs are not fully explored or defined.

Thayalan
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hi guys... i quiet new here...


just wondering ,.. how to measure a inductor...
TQ
 
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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?
 
Can an Inductor reduce voltage
 
Thayalan said:
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?
 

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