A friend of mine in another forum decided to send several members Arduino Duemilanove boards to play around with. These people are more programming types than electrical electronic types. Suddenly everyone has ideas about using this board for automotive applications. I am attaching an image of the board for those who have never seen one.
These boards have a power input as seen which is followed by a regulator (onboard) and a few filter caps. The nice folks at Arduino make it a point to tell the user that the input voltage should exceed 7 volts (guessing the 5 volt reg is not low dropout) and should not exceed 12 volts. Exceeding 12 volts in will cause the little onboard regulator to get toasty.
I was thinking about using a LM2940 9.0 volt regulator. It has low dropout (don't care) but is supposed to be designed with automotive applications in mind as to things like load dumps and accidental reverse polarity (2 battery jumps).
This stuff is far from my forte so any thoughts or ideas as to if what I have in mind will work would be most appreciated.
<EDIT> This is a link to the regulator LM2940 family. I am planning TO220 case. </EDIT>
Thank You
Ron
These boards have a power input as seen which is followed by a regulator (onboard) and a few filter caps. The nice folks at Arduino make it a point to tell the user that the input voltage should exceed 7 volts (guessing the 5 volt reg is not low dropout) and should not exceed 12 volts. Exceeding 12 volts in will cause the little onboard regulator to get toasty.
I was thinking about using a LM2940 9.0 volt regulator. It has low dropout (don't care) but is supposed to be designed with automotive applications in mind as to things like load dumps and accidental reverse polarity (2 battery jumps).
This stuff is far from my forte so any thoughts or ideas as to if what I have in mind will work would be most appreciated.
<EDIT> This is a link to the regulator LM2940 family. I am planning TO220 case. </EDIT>
Thank You
Ron
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