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

 

This will require a schematic and some numbers about the amount of current.

 

Post a schematic.

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

 

Hi,

IS this homework or maybe not?

 

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?

 

Hi,

IS this homework or maybe not?

Consider the first sentence of the original post:

Hello friends, I am finally in my final stage of my dc-dc converter project for my final year project.