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| General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion? |
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20th October 2009, 09:29 PM
| #1 |
 circuitry problem
Helo guys I need a circuit whereby temperature is sensed, and if below a certain value, a heating element makes the temperature rise. And when the temperature reaches that certain value, a motor starts turning. Any ideas?? =_= are there any precautions to take?? Last edited by goodguy; 20th October 2009 at 09:31 PM. | |
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20th October 2009, 09:32 PM
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Are the two values that you mention exactly the same or are they different?
__________________ RadioRon | |
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20th October 2009, 10:20 PM
| #3 |
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How about a household AC thermostat.
__________________ I totally take back all those times I didn't want to nap when I was younger. | |
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21st October 2009, 12:54 AM
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If you want it simple, google for some PTC sensors and op-amps (LM358 f.i.) in comparator mode. the temperature sensor changes it's resistance for changes of temperature. Start playing with op-amps in comparator mode. That's really simple stuff.
__________________ -The kinda guy who would improvise so much that you'd say "Here's 50 bucks for your Gigantron" http://vortexelectricaz.blogspot.com | |
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21st October 2009, 06:42 AM
| #5 | |
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What temperature to turn on the heater? What temperature to turn on the motor?
__________________ Mike ML. | ||
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| circuitry, problem |
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