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| Electronic Projects Design/Ideas/Reviews Are you building an electronic project or want to? Maybe you need some assistance? Come and submit your electronic questions here and let our experienced members find a solution. |
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30th October 2003, 10:46 PM
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 temperture sensor
hi guys i have a small assigment which i suppose to design a temperture controller. this controller have to be connected to a small fan to cool down the PC adapter. i need little bit help, in my view i think i have to connect small sensor to a relay but HOW, with temperture range HELP.?!
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31st October 2003, 12:10 AM
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Using a simple thermistor, you can make an on/off circuit using a comparator/amp, transistor, fan, and glue components. The thermistor is not linear, but it does not matter if you are just going to turn the fan on/off. If you are building something like a PID controller for the fan, you'll need some type of processor to control the motor speed.
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31st October 2003, 01:05 AM
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Microchip has some great fan control chips Check out the TC642. Then all you need is a thermister and some resistors. The data sheet has a simple schematic. Brent | |
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