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circuitry problem

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goodguy

New Member
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??
 
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microtexan

New Member
How about a household AC thermostat.
 

Vizier87

Active Member
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.
 

MikeMl

Well-Known Member
Most Helpful Member
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??

Have you got a temperature sensor in mind?

What temperature to turn on the heater?

What temperature to turn on the motor?
 
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