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Revision to Choosing the power supply

Tony

== Voltage ==
-The '''Duet WiFi''' and '''Duet Ethernet''' work with a VIN supply of between 11V and 25V. Usually, 12V or 24V is used because other components (heaters, fans etc.) are readily available at these voltages. There are three factors that may make 24V preferable to 12V:
+The Duet 2 (Wifi and Ethernet) work with a VIN supply of between 11V and 25V. Usually, 12V or 24V is used because other components (heaters, fans etc.) are readily available at these voltages. There are three factors that may make 24V preferable to 12V:
* A 24V bed heater takes half the current of a 12V heater of the same power. So you can go to double the heating power before you need to use an SSR to control the bed heater. This means that 24V is generally advisable for printers with a bed larger than about 200mm square unless you use an AC mains voltage bed heater. See [[Choosing a bed heater]].
* If you intend to use the resume-after-power-fail facility, a 24V supply will be able to power your stepper motors for longer before the voltage falls too much. This makes it more likely that it will be able to complete the power fail script.
-The '''Duet Maestro''' uses TMC2208 drivers, which work best with lower current motors (hence higher inductance) motors. For this reason, we recommend you use 24V power with the Duet Maestro, especially if the printer is a delta. If you use 12V power, the maximum travel speeds you can achieve may be lower.
+The Duet 2 Maestro uses TMC2224 drivers, which work best with lower current motors (hence higher inductance) motors. For this reason, we recommend you use 24V power with the Duet 2 Maestro, especially if the printer is a delta. If you use 12V power, the maximum travel speeds you can achieve may be lower.
== Total power needed ==

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