Welcome! Log In Create A New Profile

Minimum power supply rating w/no heatbed

Posted by mkeveney

mkeveney

Minimum power supply rating w/no heatbed
July 12, 2012 04:21PM

Registered: 11 years ago
Posts: 40

I'm considering a something like the Portabee, but without a heated bed. ...I'll use PLA exclusively.

I'd like to use the smallest power supply I can get away with. How many watts to I need?

Is there a chart somewhere with various hot-end power requirements? How much extra for the electronics and 5 steppers?

-Matt

Reply Quote

Sublime

Re: Minimum power supply rating w/no heatbed
July 12, 2012 04:37PM

Registered: 13 years ago
Posts: 2,947

I run my prusa and my early Tantillus prototypes off of a 12v 5A 60watt power supply and the production Tantillus' use a 15v 5/6A 90watt power supply. The extra voltage helps with faster moves and faster heat up time of the hotend. The extra wattage is just for safety.

FFF Settings Calculator	Gcode post processors	Geometric Object Deposition Tool Blog
Tantillus.org	Mini Printable Lathe	How NOT to install a Pololu driver

Reply Quote

DeuxVis

Re: Minimum power supply rating w/no heatbed
July 13, 2012 07:48AM

Admin
Registered: 12 years ago
Posts: 2,569

12V / 5A is regarded as the average sufficient enough value for a reprap without a heated bed.
I'm not sure you'd be making a real save on anything by using something smaller, and "getting away with" might be something that fluctuates depending on weather conditions, type of object you print etc.

I mean keeping a margin is better. But feel free to experiment winking smiley

Most of my technical comments should be correct, but is THIS one ?
Anyway, as a rule of thumb, always double check what people write.