Questions tagged [mosfet]

For questions relating to the use of MOSFETs in 3D printers

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1 answer
36 views

Controlling MOSFET with 12 V from board to heat bed with 24 V PSU

I'm thinking about trying to use a 12 V power supply for the board and 24 V for the hotend and heatbed triggered by some MOSFETs modules like this Power Expansion Board Heating Controller MOSFET High ...
  • 113
0 votes
1 answer
812 views

MOSFET burned and high heated bed resistance

I am a newbie to 3D printing and I am making a 3D printer from scratch (Cartesian). I've got a RAMPS 1.4 shield and an Arduino Mega 2560 board. I have a few questions and it would be very nice if I ...
1 vote
1 answer
885 views

How to control 4 thermistors in a heated bed?

My print area is ~ 17x16 inches (431.8 mm x 406.4 mm = 175,158.4 mm/2). To that end I need four (4) 200mm square heaters, and associated mosfets to run it. Each heater has it's own thermistor and can ...
  • 2,310
2 votes
1 answer
416 views

Which 3D printer controller should I use?

I recently build a 3D printer from scratch and was using an Arduino Mega + RAMPS 1.4 to control it. A few weeks in I installed a heated bed to help my prints stick to the surface. The bed I bought was ...
2 votes
1 answer
439 views

Minimum MOSFET rating for MK3 heatbed

My printer (Prusa i3 Mk3 rework clone, with a 200 x 200 MK3 ALU-heatbed, RAMPS 1.4) has a car relay for heated bed control. It works just fine using bang-bang on Marlin, but I would like to replace it ...
3 votes
3 answers
2k views

Will this MOSFET allow the heat bed to run at a different voltage than the control board

I am currently running my Tronxy X5s with a MKS Gen L board. So far I have not ran the heat bed over 50 degrees C since I have only printed with PLA so far. I plan to try PETG and/or ABS in the near ...