Inverter Design Basics Generation of AC waveform from a DC Source

What is an Inverter ?

 Inverters are power electronics-based devices which convert direct current (DC) to alternating current (AC), a function which is fundamental to the integration of power from many sources into the distribution system.

An inverter is used to produce an uninterrupted 220V AC or 110V AC (depending on the line voltage of the particular country) supply to the device connected as the load at the output socket.


Why they are called inverters ??? 

It can be used to convert from DC to AC or vice versa depending upon requirements. This is why it is called an inverter i.e. it inverts the voltage from DC to AC or vice  versa . Historically, devices that converted AC to DC were called “converters” and therefore devices that did the reverse (i.e. DC to AC) were called “inverters”



Firstly we should note that how we can generate AC waveform from a given DC source 

To illustrate this a simple switching circuitry will be required 















Functioning of this circuit is explained by the following diagram--->> 

Phase 2

Phase 2