Project:AN1015-lead acid battery charger

Discussion in 'The Projects Forum' started by misseny, Mar 22, 2009.

  1. misseny

    Thread Starter New Member

    Mar 22, 2009
    3
    0
    i am a student from Malaysia, interested for doing Programmable Lead Acid Battery Charger published in AN1015. But there is some problem on how determining the value of label component in this circuit eg Ccomp1,Rcomp etc. I have upload the circuit for reference. I am very grateful if anyone can help me to give guidance and i want to learn from anyone experienced doing this project.I would like to charge 12V lead acid battery. Any information about this topic is really needed.

    thanks
    misseny
    Malaysia
     
  2. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
    Please post attachments in Portable Document Format.

    Conversion is free at PDF Online
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,645
    2,344
    Hello thatoneguy,

    The question is based on figure 10 on page 9 of the attached PDF from microchip.

    Greetings,
    Bertus
     
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Looks to me like they (Microchip) discontinued the PIC16HV785. They still make the PIC16F785.

    From the application note, on page 9, under the named components:
    "HARDWARE FEEDBACK TO PWM: OP1 IS CURRENT SENSE SIGNAL.
    ERROR AMP. Ccomp1/Ccomp2/Rcomp ARE
    LOOP COMPENSATION COMPONENTS."

    In the lower right corner:
    "COMPONENTS THAT DO NOT HAVE A NUMERICAL
    VALUE ASSOCIATED WITH THEM ARE DEPENDENT
    UPON THE VOLTAGE/CURRENT SPECIFICATIONS OF
    THE PARTICULAR APPLICATION.
    CONSULT MICROCHIP FOR GUIDANCE IN DEFINING
    THESE COMPONENT VALUES."

    I see you've requested information on the Microchip message board, under someone else's request that has received no response since October of 2008.

    You might try searching for similar requests by others on that board.

    If you're still not getting anywhere, try writing to Microchip tech support directly, but give more specifics about the battery you wish to charge; eg: voltage, charge current, float voltage, etc.
     
    Last edited: Mar 22, 2009
  5. misseny

    Thread Starter New Member

    Mar 22, 2009
    3
    0
    hye...
    thanks to bertus for the attached pdf....

    thanks for the response.
    i would like to charge 12V lead acid battery...
    details i will update later....i will find it...
    and for information, i want use this circuit for solar application...
    how u think about it?...

    thanks
    misseny
    Malaysia
     
  6. misseny

    Thread Starter New Member

    Mar 22, 2009
    3
    0
    i want to charge 12V lead acid battery...
    i need your suggestion about what value of labeled component that i should use as well.
     
  7. tuci

    New Member

    Jan 8, 2010
    1
    0
    Hi all

    Download the PowerTool 200 Software, this calculate the missing component values. The first step is fill the circuit data in the program, after this you will see the component values...

    Istvan
    Hungary
     
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