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What is this electronic item?

Posted: Mon Dec 26, 2011 10:55 pm
by Nandika
Hi Friends,
i want to know about fllowing item(in photo).
4IN1.jpg
4IN1.jpg (378.56 KiB) Viewed 5049 times
this item has been used in power supply unit of computer,CD-DVD Player,TV,...
Also i have seen this communication port(connect to PC) of UPS.
What is item and function(action) of this item?

thanks

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Re: What is this electronic item?

Posted: Mon Dec 26, 2011 11:19 pm
by Herath
It's an optocoupler. Or an Opto-Isolator. Its task is to isolate the potentially hazardous circuitary from the sensitive PC digital circuitaries.
An electronic engineer will be able to give a more detailed description. :)
http://en.wikipedia.org/wiki/Opto-isolator

Re: What is this electronic item?

Posted: Tue Dec 27, 2011 5:31 am
by Nandika
Thank you Herath.i also were not knew name of this.

:) ;)
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