kiyoukan
0
- Joined
- Oct 24, 2009
- Messages
- 2,555
- Points
- 48
I have been looking to build a digital power supply for lasers and other things.
Now i have been thinking very hard about a good and controlled way to do this.
My thoughts.
use 2 lm317 or equivalents.
then use 1 of these to control them
Digital Potentiometers http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MCP4241-502E/P-ND
This has 2 resistors that i could control via my arduino.
the first lm317 would be a voltage regulator while the second would be a current regulator.
i have heard pwm driving a laser is bad so these would allow me to control the lasers power safely with no spikes or worry about the slider jumping in a normal pot.
if you have any better simple ways to do this that would be safe for a laser please let me know.
my only concern is what resolution do they have as it would need to be very precise.
Now i have been thinking very hard about a good and controlled way to do this.
My thoughts.
use 2 lm317 or equivalents.
then use 1 of these to control them
Digital Potentiometers http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MCP4241-502E/P-ND
This has 2 resistors that i could control via my arduino.
the first lm317 would be a voltage regulator while the second would be a current regulator.
i have heard pwm driving a laser is bad so these would allow me to control the lasers power safely with no spikes or worry about the slider jumping in a normal pot.
if you have any better simple ways to do this that would be safe for a laser please let me know.
my only concern is what resolution do they have as it would need to be very precise.
Last edited: