I need to make a simple current regulator.
Input voltage: 12V
Max current: 550mA
The device which I am powering normally draws about 450mA under normal operation. Since the voltage source is a battery, it will range from 12.5V - 10V during the course of several hours. I need to prevent inrush current spikes at power-up and would prefer to avoid using thermistors for limiting inrush current.
I am still in high school and have very little experience in circuit design. Any help would be greatly appreciated. Learning is just as important as finding a solution to my problem.
This is the simplest design that I have found so far, but I have not idea what values I need for the resistors.
http://caladan.nanosoft.ca/c4/ccorner/4.php
Input voltage: 12V
Max current: 550mA
The device which I am powering normally draws about 450mA under normal operation. Since the voltage source is a battery, it will range from 12.5V - 10V during the course of several hours. I need to prevent inrush current spikes at power-up and would prefer to avoid using thermistors for limiting inrush current.
I am still in high school and have very little experience in circuit design. Any help would be greatly appreciated. Learning is just as important as finding a solution to my problem.
This is the simplest design that I have found so far, but I have not idea what values I need for the resistors.
http://caladan.nanosoft.ca/c4/ccorner/4.php
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