RepRap MK2B 3D printers Dual Power PCB HeatBed
RepRap MK2B 3D printers Dual Power PCB Heat Bed is Double-sided, the top side being smooth in order to facilitate the printing.
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.
Current is 9.8A, as the temperature increases, the current drops to 8.8A (physical tips: resistance becomes larger as the temperature rises)
The theoretical maximum current is less than 5A
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