Voltage regulator

Discussion in 'Homework Help' started by rvicneesh, May 1, 2017.

  1. rvicneesh

    Thread Starter New Member

    Nov 15, 2016
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    0
    Hello friends, I am finally in my final stage of my dc-dc converter project for my final year project. My input device is a mechanical hand crank which is a fluctuating output device. Hence I used a LM7809 voltage regulator ic to stabilize the output to 9V. When the output of the hand crank is connected to my buck boost circuit to produce a 13V output I am only getting about 1V to 2V. Due to this failure I attempted another method by creating a voltage regulator circuit with two capacitors 10uF and 33uF with a variable resistor. When connected to the buck boost. I am able to produce about 15V to 13V. Can you guys help me explain why is this happening. Thank you
     
  2. #12

    Expert

    Nov 30, 2010
    18,078
    9,620
    This will require a schematic and some numbers about the amount of current.
     
  3. dl324

    AAC Fanatic!

    Mar 30, 2015
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    Post a schematic.

    Since this is school work, don't expect us to do the work for you.
     
    rvicneesh likes this.
  4. MrAl

    AAC Fanatic!

    Jun 17, 2014
    5,277
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    Hi,

    IS this homework or maybe not?
     
  5. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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    How many rpm does your hand cranked generator achieve? Can it create 60Hz AC from your own hand? Or is it slower than 3600 rpm?
     
  6. WBahn

    Moderator

    Mar 31, 2012
    23,099
    6,949
    Consider the first sentence of the original post:

     
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