RepRap MK2B 3D printers Dual Power PCB Heat Bed With 18AWG Cable

Any 3D printer that can handle the RAMPS MK2B version of the heatbed can use this RepRap MK2B Dual Power PCB HeatBed With 18AWG Cable heatbed.

Due to its dual power capability, the heatbed may be powered by either a 12V or 24V power source. It has a central mounting hole allowing three points of mounting on the front side. When compared to four point mounting, this method makes bed levelling more simpler.

Level the side with two holes first, then level the side with one hole and secure in place. The best option for a rigid and genuinely flat surface is a glass plate. Furthermore, a significant increase in solder pad size has made the process much simpler and enabled the use of 1206 surface mount components. However, this does not mean that appropriate strain relief is not necessary.

Connection:

12V connection: One cable connected to 1, another cable connected to a wire 2, 3 at 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.  

Features :

1. 2 layer, 35μm copper.
2. Copper Plated Holes
3. Very good in combination with RUMBA or Taurino Power.
4. 18AWG cable.