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Anonymous Poster #1

What is a Varistor?

07/29/2015 5:01 AM

Dear sir

Good afternoon . I about the electrical varistor and which is the use place .

thanks

Nur islam
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Mikerho
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#1

Re: What is a Varistor?

07/29/2015 5:19 AM

Why come here?

Why not go here:

https://www.google.com/search?newwindow=1&site=&source=hp&q=varistor&oq=Varistor&gs_l=hp.1.0.0l9j5.2261.4883.0.7676.8.8.0.0.0.0.99.616.8.8.0....0...1c.1.64.hp..0.8.614.2kLNmN0B6VI

and get this:

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Mikerho
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#2
In reply to #1

Re: What is a Varistor?

07/29/2015 5:22 AM

Geez! Snipping tool resolution is CRAPPY!

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Original_Macgyver
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#3
In reply to #2

Re: What is a Varistor?

07/29/2015 9:30 AM

Getting a bit SNIPPY huh?!?!

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Mikerho
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#8
In reply to #3

Re: What is a Varistor?

07/29/2015 6:45 PM

Eeeeaaarrrppp!! There, I'm better now.

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ignator
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#4
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Re: What is a Varistor?

07/29/2015 11:20 AM

GA, Metal Oxide Varistor would be the full correct name, i.e. MOV.

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The.Tinkerer
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#5
In reply to #4

Re: What is a Varistor?

07/29/2015 1:39 PM

Unless, of course, the material was not Metal Oxide.

Silicon Carbide comes to mind...

...there are others

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JRaef
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#9
In reply to #5

Re: What is a Varistor?

07/30/2015 8:18 AM

Ummm... Last I looked, silicon is a metal...

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#10
In reply to #9

Re: What is a Varistor?

07/30/2015 11:56 AM

Not a quite metal:

Metalloid (or "semi-metal" or "poor metal"). The metalloids are B, Si, Ge, As, Sb, Te, and Po. They sometimes behave as semiconductors (B, Si, Ge) rather than as conductors.

from http://periodic.lanl.gov/metal.shtml

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The.Tinkerer
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#11
In reply to #9

Re: What is a Varistor?

08/04/2015 11:53 AM

Silicon Carbide Varistors are not Metal Oxide Varistors. MOV's are primarily made of zinc oxide. MOV's have a specific content with a generic-sounding name.

The most important part there would be the oxide, whereas Silicon carbide is a carbide.

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#6

Re: What is a Varistor?

07/29/2015 1:57 PM
  • It is an excellent topic for an internet search engine to process.
  • It is an excellent keyword for Wikipedia to process.
  • Etc., etc.

What is an Anonymous Poster?

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The.Tinkerer
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#7
In reply to #6

Re: What is a Varistor?

07/29/2015 2:32 PM
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The.Tinkerer
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#12
In reply to #7

Re: What is a Varistor?

08/04/2015 11:55 AM

numbskull obviously doesn't get the anonymous part of that response.

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Simon Wan
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#13

Re: What is a Varistor?

09/25/2015 1:36 AM

First of all it is a recommended to understand the working principle of a varistor and by understand the working principle of the varistor then you will then understand how and what the varistor is use for.

A varistor is an an electrical resistance that varies with the applied voltage. At low voltage it has a high electrical resistance which decreases as the voltage is raised.

Varistors are used as control to provide optimal operating conditions or to protect against excessive transient voltage. When used as protection devices, they shunt the current created by the excessive voltage away from sensitive components when triggered.

Example: Varistor are connected across the Relay Coil to protect against excessive transient voltage during the relay coil is energies or during de energize.

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