Current measureing

Comments

• Archiver Posts: 46,084

  2000-11-12 05:48 edited 2000-11-12 05:48

  Simpliest way is to use a small value resistance in series with the
  current and measure the voltage drop across it (V=IR).
  
  Of course, you don't state what current range you need to measure, so
  make sure you use a resistor capable of handling the power it needs
  to dissapate.
  
  -Martin Hebel
  http://www.selmaware.com
  &
  http://www.siu.edu/~imsasa/elm
  
  --- In basicstamps@egroups.com, "Michael Hendricks" <mjh80@b...>
  wrote:
  > What is the best way to convert a current to a voltage? Ineed to
  read
  > current draw with a ADC. Thanks for any help.
  >
  >
  > MH
• Archiver Posts: 46,084

  2000-11-12 15:55 edited 2000-11-12 15:55

  Use a Dallas semiconductor DS2760.
• Archiver Posts: 46,084

  2000-11-12 20:52 edited 2000-11-12 20:52

  In serial with wire you need to put some resistance and on both ends you
  will have VOLTAGE. Depend of resistance voltage will be small or high.
  For instance if you need to convert 4-20 mA current you need to put 500 OHM
  and on resistor you can measure voltage between 2 -10 V.
  I think this will help you.
  

  ---

  Original Message

  ---

  From: "Michael Hendricks" <mjh80@b...>
  To: <basicstamps@egroups.com>
  Sent: Saturday, November 11, 2000 8:14 PM
  Subject: [noparse][[/noparse]basicstamps] Current measureing
  
  
  > What is the best way to convert a current to a voltage? Ineed to read
  > current draw with a ADC. Thanks for any help.
  >
  >
  > MH
  >
  >
  >
  >