Inverters are seldom found as stand-alone circuits. One
will normally find them used in conjunction with other circuits such as
rectifiers and filter circuits in power supplies that will provide a source
for the dc voltage the inverter needs. One may also find the inverter
as an integral part of the dc-to-dc converter circuitry used in many types
of dc power supplies. The major use of inverters in industry today is
ac motor drives and high-frequency power supplies for welding
section explains motor drives and other applications in detail.