All About Circuits Forum  

Go Back   All About Circuits Forum > Electronics Forums > General Electronics Chat

Notices

General Electronics Chat Discussion forum for general chat about anything electronics related, including asking questions about material in the All About Circuits E-book, Worksheets, and Videos.

Reply   Post New Thread
 
Thread Tools Display Modes
  #1  
Old 05-20-2010, 04:21 AM
vinodquilon's Avatar
vinodquilon vinodquilon is offline
Senior Member
 
Join Date: Dec 2009
Location: india
Posts: 229
Blog Entries: 2
Post isolation amplifier using optocoupler and op amp

Can anybody give circuit of isolation amplifier using optocoupler and op amp
Reply With Quote
  #2  
Old 05-20-2010, 04:56 AM
SgtWookie's Avatar
SgtWookie SgtWookie is offline
Expert Member
 
Join Date: Jul 2007
Location: In the vast midwest of the USA; CST
Posts: 22,030
Default

Well, optocouplers generally aren't very linear - they're either ON, or struggling to turn off. This isn't exactly the case, but once you've fiddled around with optocouplers/optoisolators for awhile you will find that the turn-off time can seem to be an eternity.

If it's an option, convert the analog data to digital, and then send it through an optocoupler/optoisolator. You'll eliminate many problems by doing that.
__________________
General info:
If you have a question, please start a thread/topic. I do not provide gratis assistance via PM nor E-mail, as that would violate the intent of this Board, which is sharing knowledge ... and deprives you of other knowledgeable input.
Reply With Quote
  #3  
Old 05-20-2010, 05:16 AM
nsaspook's Avatar
nsaspook nsaspook is offline
Senior Member
 
Join Date: Aug 2009
Location: Fairview, Oregon
Posts: 1,072
Blog Entries: 1
Default

Quote:
Originally Posted by vinodquilon View Post
Can anybody give circuit of isolation amplifier using optocoupler and op amp
You could use a IL300. http://www.vishay.com/optocouplers/list/product-83622/

App note: http://www.vishay.com/docs/83708/appn50.pdf
Reply With Quote
Reply   Post New Thread

Tags
, , ,


Related Site Pages
Section Title
Worksheet Design Project: audio media-based signal generator
Worksheet Inverting and noninverting opamp voltage amplifier circuits
Worksheet Negative feedback opamp circuits
Worksheet Basic operational amplifiers
Textbook Practical considerations : Operational Amplifiers
Textbook Voltage-to-current signal conversion : Operational Amplifiers
Textbook Negative feedback : Operational Amplifiers
Video Lecture Basic Amplifier Configuration (Part 1) - Op Amps and Op Amp Circuits
Video Lecture Op Amps Characteristics (part 1) - Op Amps and Op Amp Circuits
Textbook Class B audio amplifier : Analog Integrated Circuits


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 07:07 AM.


User-posted content, unless source quoted, is licensed under a Creative Commons Public Domain License.
Powered by vBulletin
Copyright ©2000 - 2014, vBulletin Solutions, Inc.