DIY 3D Printer from scratch – Power Supply

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DIY 3D Printer from scratch – Power Supply
5 (100%) 2 votes

Welcome to 3DPrinterChat.com, this article is part of the DIY 3D Printer from scratch, and we will learn how to choose the best 3D Printer Power Supply.

 

 

What are the available kinds of power supply?

There are two main kinds of power supply available, we will focus on the Switch-mode because of its efficiency, but is always good to know the other option.

Switch-mode power supplies:

Nowadays  practically all power supplies within the power range required by RepRap printers (250~350W) are switch-mode power supplies (as opposed to linear power supplies, which are considered technologically outdated).

Switch-mode power supplies have relatively complex circuits that convert mains AC electricity to the DC voltages required by RepRap steppers and electronic circuits. The main advantage of an Swith-mode power supply is its high-efficiency in converting energy.  for more information you might want to take a look at this full explanation

There is also this video, it talks about step-up converters, they are NOT the same, but the logic behind it is, and its easier to understand:

Linear power supplies:

This kind of power supply usually use a transformer to reduce the AC voltage, to about 16V AC, then a rectifier circuit will take care of converting the AC voltage into DC, and a stabilizer circuit will make it stable.

The disadvantage of this system is its low efficiency, high cost and taking huge amounts of space. You can read more about this here

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Comments 7

    • Profile photo of Italo Soares

      There is a guy here in brazil that makes high volume printers, but both the printer, and the operating costs are way too high.

      The printer itself is about R$30.000 (something around $9000 USD). and to power this monster is needed 4kWh to the heated bed. (if you print with PLA its not needed).
      Is uses a nozzle of 1mm, because printing the full volume on a 0.4mm would take about 8 months, with an 1mm nozzle is about 15 days.

      The printer itself is simple, you might want to see the hypercube project.
      you will only need to use bigger aluminium extrusions (on the length).
      http://www.thingiverse.com/thing:1752766

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