Author Topic: What is this thing? What does it do?  (Read 5372 times)

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Offline TheGlassesGeekTopic starter

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What is this thing? What does it do?
« on: January 21, 2015, 03:00:02 pm »
Hello! I am a total electronics n00b, I know. But I got a question... What does this thing do? (pictures in the attachment)
I tried to measure anything with my multimeter... but didn't get any change in values...

 

Offline jeremy

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Re: What is this thing? What does it do?
« Reply #1 on: January 21, 2015, 03:03:03 pm »
It's an inductor.
 

Offline TheGlassesGeekTopic starter

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Re: What is this thing? What does it do?
« Reply #2 on: January 21, 2015, 03:06:19 pm »
It's an inductor.

What does it do? does it generate a magnetic field? What's the use of it?
 

Offline jeremy

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Re: What is this thing? What does it do?
« Reply #3 on: January 21, 2015, 03:08:46 pm »
Well I don't have the time to decently answer that one sorry, I'd need a book ;) But I will direct you to the art of electronics by horowitz & hill for a good explanation.

Basically, it is a component which doesn't like to have the current through it changed. It will store energy in a magnetic field, and when you try to change the current going through it, it will use that energy to create a voltage that tries to oppose your change. Of course, it will never win because it can't store infinite energy. But it will still try!

Very common in frequency dependent circuits like filters.
 

Offline TheGlassesGeekTopic starter

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Re: What is this thing? What does it do?
« Reply #4 on: January 21, 2015, 03:10:32 pm »
Well I don't have the time to decently answer that one sorry, I'd need a book ;) But I will direct you to the art of electronics by horowitz & hill for a good explanation.

Basically, it is a component which doesn't like to have the current through it changed. It will store energy in a magnetic field, and when you try to change the current going through it, it will use that energy to create a voltage that tries to oppose your change.

Very common in frequency dependent circuits like filters.

cool! thanks :) I scrapped it from an old broken monitor, but I had no idea what it was or what it did. So I really appreciate your reply!  :D
 

Offline suicidaleggroll

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Re: What is this thing? What does it do?
« Reply #5 on: January 21, 2015, 03:27:53 pm »
 

Offline c4757p

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Re: What is this thing? What does it do?
« Reply #6 on: January 21, 2015, 03:41:49 pm »
In the old broken monitor, it was likely part of a power supply. You can use them for voltage conversion - start current flowing through it, and then when you interrupt the current, it'll generate a voltage. If you're clever, you can arrange it so that the voltage is useful to you.

DC-to-DC converter
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Offline TheGlassesGeekTopic starter

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Re: What is this thing? What does it do?
« Reply #7 on: January 21, 2015, 03:47:46 pm »
In the old broken monitor, it was likely part of a power supply. You can use them for voltage conversion - start current flowing through it, and then when you interrupt the current, it'll generate a voltage. If you're clever, you can arrange it so that the voltage is useful to you.

DC-to-DC converter

I'll definitely put it in my parts box then!! Thanks for the great response! :)
 

Offline c4757p

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Re: What is this thing? What does it do?
« Reply #8 on: January 21, 2015, 03:49:50 pm »
Inductors are great to have in the parts box.

Actually, that old monitor might be packed with useful parts box stuff, depending on how old it is...
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Offline TheGlassesGeekTopic starter

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Re: What is this thing? What does it do?
« Reply #9 on: January 21, 2015, 03:52:30 pm »
Inductors are great to have in the parts box.

Actually, that old monitor might be packed with useful parts box stuff, depending on how old it is...

It was an 3-4 years old 1080p monitor. a modern dell one. The backlight failed... and shipping a new one to the netherlands is almost as expensive as a new one, so I got an iiyama 144hz display. I scrapped some capacitors, connectors, this thing and some resistors from it.
 

Offline c4757p

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Re: What is this thing? What does it do?
« Reply #10 on: January 21, 2015, 03:55:06 pm »
Ah, so not old. CRT monitors have a bunch of good stuff in them. ;D
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Offline TheGlassesGeekTopic starter

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Re: What is this thing? What does it do?
« Reply #11 on: January 21, 2015, 04:08:36 pm »
Ah, so not old. CRT monitors have a bunch of good stuff in them. ;D

I might have a big ass 20 yr old tv left in my basement... maybe I'll take it apart some time.
 

Offline rx8pilot

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Re: What is this thing? What does it do?
« Reply #12 on: January 21, 2015, 05:59:53 pm »
Well I don't have the time to decently answer that one sorry, I'd need a book ;) But I will direct you to the art of electronics by horowitz & hill for a good explanation.


That book has shaped my future. Really fantastic approach to explaining a complex topic. Concepts first in human terms, followed by the math to support it. Most text books go directly for the math with little discussion of concepts or reasons that component was invented.
Factory400 - the worlds smallest factory. https://www.youtube.com/c/Factory400
 

Offline jeremy

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Re: What is this thing? What does it do?
« Reply #13 on: January 21, 2015, 06:26:49 pm »
Well I don't have the time to decently answer that one sorry, I'd need a book ;) But I will direct you to the art of electronics by horowitz & hill for a good explanation.


That book has shaped my future. Really fantastic approach to explaining a complex topic. Concepts first in human terms, followed by the math to support it. Most text books go directly for the math with little discussion of concepts or reasons that component was invented.

I take it you have seen this then.
 

Offline rx8pilot

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Re: What is this thing? What does it do?
« Reply #14 on: January 22, 2015, 10:18:47 pm »
I take it you have seen this then.

It is now on the list. There is no doubt that updates are needed. Thank you VERY much for the link.

For anyone hoping to gather a solid knowledge of the fundamentals - this book goes a very long way.
Factory400 - the worlds smallest factory. https://www.youtube.com/c/Factory400
 


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