Build platform heater with a transistor as heater
Added 2018-01-04 23:48:44 +0000 UTC... didn't work all that well!
Why am I still botching things together after pursuing the perfect PCB prototyping method for years?
Maybe it just needs a bigger mosfet
(100V 180A 560W 😵)
Comments
Ah I still have a few of those 200A IGBT modules, those can probably dissipate a kW in heat ...
Marco Reps
2018-01-05 13:16:21 +0000 UTCThat 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 ...
Marco Reps
2018-01-05 13:13:08 +0000 UTCI really like this idea. If you're gonna hack something together, might as well make it a art piece while you're at it.
Dillon Nichols
2018-01-05 12:23:50 +0000 UTCLOL 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.
2018-01-05 10:24:44 +0000 UTCIf it isn't so big it needs an A/C unit to cool it's not big enough.
John McCormick
2018-01-05 00:00:13 +0000 UTCTried 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.
Holger P Kleinert
2018-01-04 23:57:09 +0000 UTCYeah that looks "well done" .. if a bit on the "magic smoke escaped" side.
Jon Harsem
2018-01-04 23:52:36 +0000 UTCLooks like more than just the platform was heated.
Nick
2018-01-04 23:49:58 +0000 UTC
