DESCRIPTION

RepRap MK2B 3D printers Dual Power PCB Heat Bed is Double-sided, the top side being smooth in order to facilitate the printing.

Connection:

12V connection: One cable connected to 1, another cable connected to a wire 2, 3 in the same time.
At this time the resistance value of the two lines is 1.0 ~ 1.2Ω, the actual power is 144W.

24V connection: One cable connection 2, another line connected to 3 (1 unconnected), the resistance value of the two lines is 4.0Ω, actual power is 24 * 24/4 = 144W.
The new version of the circuit, whether connected 12V or 24V, the power will stable at 144W.

Test report:

12V connection:
Current is 9.8A, as the temperature increases, the current drops to 8.8A (physical tips: resistance becomes larger as the temperature rises)
24V connection:
The theoretical maximum current is less than 5A

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RepRap MK2B 3D printers Dual Power PCB HeatBed,HEAT BED