Current Sensing Resistor

Results 1 to 4 of 4

Threaded View

  1. - 17th February 2007, 07:00 #1
    manumenzella's Avatar
    manumenzella
    manumenzella is offline Junior Member
    Join Date
    Jan 2007
    Posts
    44

    Default Current Sensing Resistor

    Hi. I want to make a current sensing device, and I read somewhere (cant remember now) that you could you a small value resistor (about 0.1R) a measure the current drop across it. But how do I calculate the current from that value??? Should I use a simple op amp to amplify the voltage drop (like the 741)???
    Thanks!!! Manuel
    Last edited by manumenzella; - 17th February 2007 at 07:12.
« Previous Thread | Next Thread »

Similar Threads

  1. Can I drive a 5v LED without a current resistor?
    By Fredrick in forum Schematics
    Replies: 31
    Last Post: - 11th September 2009, 14:42
  2. 16F877 ADC using the Allegro ACS754 Current Sensor
    By DavyJones in forum General
    Replies: 8
    Last Post: - 5th May 2009, 20:10
  3. Calulating BJT base resistance for PIC led switching?
    By xnihilo in forum mel PIC BASIC Pro
    Replies: 11
    Last Post: - 20th November 2008, 08:41
  4. 16F628A current high during sleep
    By Rubicon in forum mel PIC BASIC Pro
    Replies: 5
    Last Post: - 9th October 2006, 10:21
  5. Do I need that Resistor with my LCD?
    By Melanie in forum FAQ - Frequently Asked Questions
    Replies: 0
    Last Post: - 15th July 2004, 10:50

Members who have read this thread : 0

You do not have permission to view the list of names.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Forum Rules