Driving a Voltage Regulator with PWM


Closed Thread
Results 1 to 9 of 9

Hybrid View

  1. #1
    Join Date
    Nov 2003
    Location
    Greece
    Posts
    4,128


    Did you find this post helpful? Yes | No

    Default

    On the schematic you have to power with more that 15Volts. 2950-5 needs at least 0.45 volts at the input above from 5V. If your battery is discharged and request more current, the transformer might drop the voltage bellow 15V.

    The circuit is quite economical but I am afraid that is quite a compromise too.

    I have attached my idea in a hand schetch (sorry, no CAD here!).

    Ioannis
    Attached Images Attached Images  

  2. #2
    Join Date
    Aug 2006
    Location
    SWITZERLAND (french speaking)
    Posts
    938


    Did you find this post helpful? Yes | No

    Default

    CAD is not necessary - your drawing is well done

    You're right, the Zener is going to be an 8,7V since I don't have another under my hand...

    Maybe I'll go for your solution.

    Have to make some trials.

    Thanks a lot.
    Roger

Similar Threads

  1. Variable PWM PIC18F2431
    By trr1985 in forum mel PIC BASIC Pro
    Replies: 7
    Last Post: - 12th June 2009, 06:03
  2. Voltage monitor and PWM control
    By StoneColdFuzzy in forum mel PIC BASIC Pro
    Replies: 2
    Last Post: - 11th May 2009, 16:11
  3. Negative voltage for LCD driving?
    By Fredrick in forum Schematics
    Replies: 11
    Last Post: - 15th January 2009, 11:51
  4. PIC driving Adjustable Voltage Regulator
    By flotulopex in forum mel PIC BASIC Pro
    Replies: 6
    Last Post: - 6th June 2007, 20:05
  5. Help with final project
    By OvERKiLL in forum General
    Replies: 4
    Last Post: - 15th December 2006, 20:35

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