Скачать или смотреть How PLC Power Supplies Work

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Today you will be learning all about PLC power supplies, what they are, and how they work.

A PLC without a power supply is much like a car without gas or a laptop without a battery. It is the fuel for the PLC.

How powerful a PLC is will greatly depend on how powerful the power supply is.

First and foremost, the power supply converts a line voltage, commonly 120 or 240 volts AC, or Alternating Current, into a useable DC, or Direct Current, voltage, commonly 24 volts, to power on the PLC and its components.

Line voltage is stepped down with a transformer, rectified to convert it to DC, filtered with capacitors, and protected during this process.

All of this is packed into that small looking power supply.

This DC voltage is used to power the rest of the PLC and components.


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