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Alain Stas

Old-School Analog Temperature Control Circuits Solved with Modern LTSpice Thermistor Dynamic Models, Part one

Editor's note: I would like to dedicate this series to the memory of Hans Camenzind, the creator of the 555 timer
Alain Stas
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Alain Stas
Alain Stas
3/30/2017 6:16:01 PM
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Newbie
555 maintains the temperature in a range
This control circuit can only heat with a defined power given by the power source and the heating element value. When the duty cycle is 100%, the "regulated" temperature can only be followed if the loss of heat is not too high . here this happens as the outside temperature begins to be  too low. In the opposite direction if the ambient outside temperature would be too high, the heating system would completely stop. And the system temperature would end up as the ambient temperature.

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rorybronx
rorybronx
3/30/2017 2:49:42 AM
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security

What are the odds that the temperature control won't become uncontrolable at the end? I believe that's the most crucial question when  it comes to protection.



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