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Build platform heater with a transistor as heater

🕑 Added 2018-01-04 23:48:44 +0000 UTC

Comments

Marco Reps

Ah I still have a few of those 200A IGBT modules, those can probably dissipate a kW in heat ...

Marco Reps

That would be a neat, professional solution, but since the build platform already is a thermally conductive al plate I thought I could do it simpler with a 5 min mosfet circuit ...

Dillon Nichols

I really like this idea. If you're gonna hack something together, might as well make it a art piece while you're at it.

LOL extra crispy! It'll never work if the smoke gets out. Maybe try a big LED array on the underside and use the platform as the heatsink... would look cool too! Something like these <a href="https://www.ebay.co.uk/itm/1000LM-10W-COB-LED-Strip-Light-High-Power-Lamp-Chip-Warm-Cool-White-12V-24V-BL/202071851524?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649" rel="nofollow noopener" target="_blank">https://www.ebay.co.uk/itm/1000LM-10W-COB-LED-Strip-Light-High-Power-Lamp-Chip-Warm-Cool-White-12V-24V-BL/202071851524?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649</a> 12V, They can get seriously hot but you could monitor the temperature and then use PWM to control it when it is nice and toasty so as not to waste those nice FETs.

John McCormick

If it isn't so big it needs an A/C unit to cool it's not big enough.

Holger P Kleinert

Tried that for a ovenized circuit, didn't work well. So I got a bunch of 2512 SMD resistors (84 in total) to get the heat spread evenly. That worked. The temperature was only 50°C though.