PWM - Mosfet/motor introducing noise


Closed Thread
Results 1 to 12 of 12

Hybrid View

  1. #1
    Join Date
    May 2004
    Location
    NW France
    Posts
    3,653


    Did you find this post helpful? Yes | No

    Default

    QUOTE=DynamoBen

    The mosfet can't be moved. I don't know if I have a low ESR cap. I can dig through my parts bin. Anything specific I should be looking for?

    > IF I tell you BC Components (ex. Philips ) Series 136 ... ESR <= 22 mOhms ( Milli ...yes ! )


    Is this in addition to the above cap?

    > The .1µF capacitor must be soldered ON the motor terminals ...


    Will try.

    > The 10nF are also necessary.


    I don't have anything like this lying around.

    > Not compulsory, yes ...but highly recommended !!!

    Alain
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************

  2. #2
    Join Date
    Jun 2005
    Location
    Wisconsin
    Posts
    382


    Did you find this post helpful? Yes | No

    Default

    This seems to be what you are describing.

    http://www.kronosrobotics.com/an142/GAN142.htm
    Last edited by DynamoBen; - 17th October 2007 at 21:38.

  3. #3
    Join Date
    May 2004
    Location
    NW France
    Posts
    3,653


    Did you find this post helpful? Yes | No

    Wink

    Quote Originally Posted by DynamoBen View Post
    This seems to be what you are describing.

    http://www.kronosrobotics.com/an142/GAN142.htm
    Hi, Ben

    Yes ... that's a nice tutorial ... but some tips still missing !!! ( diode, low esr cap, inductor ...)

    note here, in this example, motors can be reversed ... so, the diode can't be placed on the motor terminals, but close to the "reversing commutator" ( relay, transistors bridge ...)

    Alain
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************

Similar Threads

  1. Half-bridge PWM with a 16F684 ?
    By Byte_Butcher in forum General
    Replies: 7
    Last Post: - 17th January 2010, 22:18
  2. Variable PWM PIC18F2431
    By trr1985 in forum mel PIC BASIC Pro
    Replies: 7
    Last Post: - 12th June 2009, 06:03
  3. PWM: Vernacular/Function (Newbee)
    By TerryN in forum mel PIC BASIC Pro
    Replies: 2
    Last Post: - 3rd July 2008, 16:58
  4. PWM setting PIC16F887
    By Gevo in forum mel PIC BASIC Pro
    Replies: 6
    Last Post: - 12th June 2008, 07:24
  5. Tidying Up PWM Routine
    By Tissy in forum mel PIC BASIC Pro
    Replies: 4
    Last Post: - 21st February 2005, 00:26

Members who have read this thread : 0

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

Posting Permissions

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