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Topic: circuit for heat controlling with Arduino (Read 2390 times) previous topic - next topic

Terry King

OK, that's a reasonable resistance and current.

You need a "Logic Level FET" or even a plain Bipolar NPN transistor would probably work fine here....

Regards, Terry King  ..On the Red Sea at KAUST.edu.sa
terry@yourduino.com  LEARN! DO! (Arduino Boards, Sensors, Parts @ http://yourduino.com

sawadee

Thank you.
I will try it once receiving the right mosfet and post the result here.

sawadee

#17
May 11, 2011, 06:08 pm Last Edit: May 11, 2011, 06:17 pm by sawadee Reason: 1
Hello all,

I just want to say thanks for your input on my experiment.
The heating circuit is working well with both IRFZ44N (from Mike) and IRL540N mosfets.

The heating element in this experiment is silverthread with ~100? resistance. Using thermochromic pigment (operated at 27c) mixed with acrylic colour and painted on t-shirt, the ink fully turns into colourless state within 10-15 seconds. It takes longer than 45 minutes to return to its coloured state. The test was made in 18-20c room temperature.

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