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Can I use an internal layer as a heat bed if I want to warm my multilayer pcb?

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Is it proper to use the internal layer as a heat bed? If not, any disadvantage?

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Jul 9 at 21:51
Turchi Leonardo

You can not take away any copper that you don't need for heating, that'll help a lot, and if you can connect those to a safe ground trace or plane: First of all that will conduct the heat away to that plane, which helps, but it also avoids resonances and such when you start PWM-ing the heater.

Aug 15 at 22:34

I'd use a cheap SMT thermistor for the sensor assuming you only want to control at one temperature. Just stick it in and it will work.

Nov 14 at 10:59
Simone Briatore c/o TEC-MME

You can shield electrostatically with a ground plane, but the magnetic field will go right through everything, so if you have sensitive circuits you might need to filter the PWM to something more like DC.

Nov 18 at 00:22
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