Thermal monitoring using sound card - Electronic Circuits Projects Diagrams Free

kieran · 1st March 2004, 08:40 PM

I'm working on a project to monitor device temperature by PC. If I can build a thermal sensor that behave like a microphone, I can use the sound card for data collection.

The norminal mic impediance is 600 ohms.

Please give me suggestions on selecting the right thermistor.

Someone Electro · 2nd March 2004, 05:05 AM

If you want to detect temperature on the mic port you have to code it so it sends digitali. The input of a mic is driven trugh a cap so it only detects difrences in voltege. So if you dont want to have any circuitry and more programing try the game port (To bad i cant get my game port working).I think the pontencimeters in joysticks are 120K

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1st March 2004, 08:40 PM	(permalink)
kieran	Thermal monitoring using sound card I'm working on a project to monitor device temperature by PC. If I can build a thermal sensor that behave like a microphone, I can use the sound card for data collection. The norminal mic impediance is 600 ohms. Please give me suggestions on selecting the right thermistor.

2nd March 2004, 05:05 AM	(permalink)
Someone Electro	If you want to detect temperature on the mic port you have to code it so it sends digitali. The input of a mic is driven trugh a cap so it only detects difrences in voltege. So if you dont want to have any circuitry and more programing try the game port (To bad i cant get my game port working).I think the pontencimeters in joysticks are 120K __________________ Il give you shocking experience.