Question about electronic thermometer voltage
07-23-2008, 09:14 AM
#1
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Question about electronic thermometer voltage
I want to buy this thermometer because it perfectly matches the interior lighting in my Xterra:
But i'd prefer it to be a simple plug and play (no voltage adapters necessary). The specs for the therm. say operating voltage is 5vdc, + or - 0.2vdc. But it was intended for computer cases and has a 12v molex connector for power supply. Will it kill the thermometer if I just wire it into the 12v electrical system in the Xterra?
But i'd prefer it to be a simple plug and play (no voltage adapters necessary). The specs for the therm. say operating voltage is 5vdc, + or - 0.2vdc. But it was intended for computer cases and has a 12v molex connector for power supply. Will it kill the thermometer if I just wire it into the 12v electrical system in the Xterra?
07-23-2008, 10:06 AM
#2
I believe the 4-pin power supply connector provides both 12v and 5v pins,
and thus it's likely this uses the 5v since that's how it's spec'ed.
...important disclaimer: I'm not an EE.
and thus it's likely this uses the 5v since that's how it's spec'ed.
...important disclaimer: I'm not an EE.
07-23-2008, 10:45 AM
#3
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Remember, a molex connector has a +12V and a +5V source. Most likely the thermometer uses the +5 source to power itself. What you can do is make urself a +5V regulator using a LM7805 which takes an unregulated 9-18V source and converts it to a +5V.
If you need help with it, u can PM me. But this is totally possible to put into ur xterra without probs.
If you need help with it, u can PM me. But this is totally possible to put into ur xterra without probs.
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