electronics forum

Rules | Recent posts | topic RSS | Search | Register  | Log in

opto-isolator
Post new topic  Reply to topic    EDAboard.com Forum Index -> Electronic Elementary Questions -> opto-isolator
Author Message
kad



Joined: 08 Feb 2005
Posts: 24
Post13 Aug 2005 12:42   

opto-isolator
What is an opto-isolator?
Back to top
VVV



Joined: 26 Nov 2004
Posts: 1584
Helped: 290
Post14 Aug 2005 7:23   

Re: opto-isolator
It's a device that includes an LED and a phototransistor, electrically isolated from one another. But you can drive the LED and the phototransistor conducts. Thus, you can transmit signals optically over the electrical isolation barrier.
Back to top
nvd



Joined: 17 Jan 2005
Posts: 109
Location: Under Heavens
Post14 Aug 2005 22:39   

Re: opto-isolator
They are used to transmit signals and still keeps two circuits electrically isolated from each other. Generally done to isolate low voltage circuit from a high voltage circuit.
Noise immune from electromagnetic interference.
Back to top
bittware



Joined: 03 Apr 2004
Posts: 208
Helped: 1
Post17 Aug 2005 2:29   

Re: opto-isolator
Pls see http://www.optekinc.com/products/opto_assemblies_description.asp
Back to top
A.Anand Srinivasan



Joined: 15 Oct 2005
Posts: 1792
Helped: 216
Location: India
Post25 Dec 2005 8:33   

Re: opto-isolator
It consists of an LED and an phototransistor or photodiode and it electrically isolates two circuits and they are also called optocouplers
Back to top
the_risk_master



Joined: 12 Aug 2005
Posts: 688
Helped: 59
Location: UE+MIT, Philippines, (14°N , 120°E )
Post25 Dec 2005 9:04   

Re: opto-isolator
To give you an idea on how it looks like...

here it is:
Back to top
Google
AdSense
Google Adsense
Post25 Dec 2005 9:04   

Ads




Sorry, but you need login in to view this attachment
Back to top
the_risk_master



Joined: 12 Aug 2005
Posts: 688
Helped: 59
Location: UE+MIT, Philippines, (14°N , 120°E )
Post25 Dec 2005 9:05   

Re: opto-isolator
And this...

Sorry, but you need login in to view this attachment
Back to top
Arabic versionBulgarian versionCatalan versionCzech versionDanish versionGerman versionGreek versionEnglish versionSpanish versionFinnish versionFrench versionHindi versionCroatian versionIndonesian versionItalian versionHebrew versionJapanese versionKorean versionLithuanian versionLatvian versionDutch versionNorwegian versionPolish versionPortuguese versionRomanian versionRussian versionSlovak versionSlovenian versionSerbian versionSwedish versionTagalog versionUkrainian versionVietnamese versionChinese version
Post new topic  Reply to topic    EDAboard.com Forum Index -> Electronic Elementary Questions -> opto-isolator
Page 1 of 1 All times are GMT + 1 Hour
Similar topics:
opto-isolator calculations (1)
Opto Isolator Question (4)
Opto Isolator Question (4)
4N37 opto isolator question (2)
rs232 opto isolator needed ? (6)
SMPS opto-coupler feedback (opto transistor current) (1)
Isolator/Amplifier (6)
micrwave circulator ,isolator (18)
Video isolator transformer (4)
SSPA and isolator (1)


Abuse || Administrator || Moderators || Support us || sitemap
topic RSS