24 volt power supply

K8200 3D Printer K8200 - Wiring and electronics
1

Hi, just wondering, can I put a 24 volt power supply straight on to the printer or do I need to alter something’s, thanks

2

Nope, 15V only!
You can only use a 24V power supply to feed the heated bed through a power expander (have a look at the wiki).

3

Wrong. You can supply the ‘high’ side of the bed heater with 24 volt and use the standard mosfet on the PCB as the low side switch to control it. I used to have both heaters and the motors running on 24v and the rest of the board on 12v by cutting one track and using both power connectors (I have a DUET board now). Using some kind of external ‘power expander’ may be the simplest and safest way for some, but it is not the only way.

4

Raby

You guys are doing a great job with that page.
Keep up the great work.

5

Wrong. You can supply the ‘high’ side of the bed heater with 24 volt and use the standard mosfet on the PCB as the low side switch to control it. I used to have both heaters and the motors running on 24v and the rest of the board on 12v by cutting one track and using both power connectors (I have a DUET board now). Using some kind of external ‘power expander’ may be the simplest and safest way for some, but it is not the only way.[/quote]

Of course everything is possible once you’re knowing what you’re doing. But I can’t give solutions to the average users where they could loose their warranty or risk making some mistake.
And without tampering with the controller board, the answer to the question is still no.

6

I have ordered this 24vdc power supply: http://www.banggood.com/Wholesale-24V-10A-240W-Switching-Power-Supply-for-LED-Strip-light-p-50578.html

and a step down converter: http://www.banggood.com/8A-24V-TO-12V-Step-down-LED-Driver-Adjustable-Power-Supply-Module-p-927773.html

I want to use 1 power supply, with the adjustable step down converter i can supply the control unit with 15V, and the heatbed with 24V from the main power supply.