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Old 06-15-2005, 12:29 AM   #1
rainmanjam
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Unhappy Converting Millivolts to Volts

I have a EGT Sensor that I am trying to hook up to my SBC-ID. Is there anything out there that will convert millivolts to volts so it can be read. Thanks in advance.
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Old 06-15-2005, 02:52 PM   #2
aspitfire
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well if its anything like meters and millimeters, "milli" is considered 1/1000 just going by general knowledge, dont know if volts work that way..
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Old 06-15-2005, 05:26 PM   #3
2phless
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You probably need to build an op-amp, amplifier and calibrate it to a thermocouple's voltage at known temperatures vs the desired input voltage range of your GReddy piece. Then program the greddy piece to output the recived voltage as a temperature.

There might be a pre-fab package that greddy sells that'd make your life a lot easier.

If you want to dabble. I'd figure out how to use an LM741 op amp, a K type thermocouple (yellow wire (+), red (-) ) and build a simple amplifier.
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Old 06-16-2005, 02:20 AM   #4
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I don't think it's possible to go from millivolts to volts...

http://www.nace.org/nace/content/edu...cp/basic_q.asp

*at the bottom - warning - learning experience*
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Old 06-16-2005, 02:42 AM   #5
rainmanjam
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Lightbulb

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Old 06-16-2005, 04:18 PM   #6
ride5000
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Quote:
Originally Posted by rainmanjam
nice find.

note: this could be used to integrate egts and the txs tuner pro
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Old 06-16-2005, 10:51 PM   #7
2phless
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Quote:
Originally Posted by ride5000
nice find.

note: this could be used to integrate egts and the txs tuner pro
If you can find the plugs for the tuner-pro. I haven't, and I don't want to solder to their board. Anyone got a source for the little 2 and 4 prong txs plugs? I have access to a ton of various molex-knockoff plugs and even googling the hell out of them, I can't find something that'll fit the little TXS molex inputs and outputs.

That is a good find there. As long as the output is as linear (or not) as the input (and I'm sure it is) it'll work well. Too bad it's $40+ since it contains about $.50 of parts. Granted it has several minutes of R&D behind it and a little more time in production. Perhaps truely worth $20 for a water-tight and tested product. I need to actually break out the components and start building little things like this so I can help save forum members some money. I'm still pissed that I had to pay $14 for a resistor to fix a O2 sensor cel just to learn 1M ohm was the answer...


I wonder how many people here really thought you were looking for a conversion table on paper. If not some of the above need to practice 'not helping' in the newb section.
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Old 06-17-2005, 02:38 AM   #8
rainmanjam
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Unhappy

I thought that was weird myself. I can do a .5 second search on Google and find a conversion table out there. I really found it on eBay. I didn't have time to bid on it so the guy gave me a link to his web site.



Yea... if I had time, I would have tried to haggle him down in price..but in a pinch, value is directly proportional to need.
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Old 06-17-2005, 07:41 AM   #9
ride5000
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Quote:
Originally Posted by 2phless
If you can find the plugs for the tuner-pro. I haven't, and I don't want to solder to their board. Anyone got a source for the little 2 and 4 prong txs plugs? I have access to a ton of various molex-knockoff plugs and even googling the hell out of them, I can't find something that'll fit the little TXS molex inputs and outputs.

That is a good find there. As long as the output is as linear (or not) as the input (and I'm sure it is) it'll work well. Too bad it's $40+ since it contains about $.50 of parts. Granted it has several minutes of R&D behind it and a little more time in production. Perhaps truely worth $20 for a water-tight and tested product. I need to actually break out the components and start building little things like this so I can help save forum members some money. I'm still pissed that I had to pay $14 for a resistor to fix a O2 sensor cel just to learn 1M ohm was the answer...


I wonder how many people here really thought you were looking for a conversion table on paper. If not some of the above need to practice 'not helping' in the newb section.
molex plugs: look for old trashed p4 atx power supplies. the auxillary power connector to the mobo fits perfectly.
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