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The heated bed, hotbed , buildplate
There are multiple heaters to choose from, i will give some examples.
The MK2a heater is suitable to use with a 12 volts PSU, It is suitable for use wih a 24 volts PSU (through a MOSFET) as well.
Specifications:
Dimensions: 214 x 214 x 2mm Laminate FR4 1.6±0.15mm 2 layer, 35μm copper Black Soldermask - both sides White Silkscreen - both sides Power Input: 12V / 24V Power: 120W Resistance: under 12V voltage, resistance 1.2 ohms; under 24V voltage, resistance 4.8 ohms Color: Black Copper plated holes
The MK3 heater is a combined heater and buildplate in one, so a sheet of glass on the top and print away
Specifications:
1 layer 35μm copper Voltage: 12/24V Resistance: 1.4-1.6 Ohm at 12V 5.0-5.4 Ohm at 24V Max. Temp: 180° C Heating Time: 24V reaches 100° C in 2 minutes Dimensions: 215 x 215 x 3mm Weight: 363g Colour: Black with White Mask/Text
MK3 can choose 12 v and 24 v two voltage, 12 V: one line thread cross 1, another cross 2, 3 24 V: one line thread cross 2, another cross 3 (1 don't need to pick up). The new circuit, whether meet the 12 v or 24 v, the power is stable.