Theory Of Operation; Inverter Design - ESAB fabricator 141i Service Manual

5.01 Inverter Design

What does the word inverter mean?
The term inverter refers to the ability to change DC power into AC. Inverter power supplies immediately rectify the incoming AC to DC,
and then the transistors create a higher frequency AC. The higher frequency AC then goes on to a much smaller main transformer than
in a conventional power supply. The AC is then rectified to extremely smooth DC. The diagram to the below shows the basic electrical
wiring of a DC output inverter power supply.
Rectifier
AC -50/60Hz DC -Rippled
High Voltage High Voltage
Low Amperage Low Amperage Low Amperage
Manual 0-5448
SECTION 5:

THEORY OF OPERATION

Inverter Technology - Summary
Filter IGBT
DC -Smooth AC -23K Hz
High voltage High Voltage
Low Amperage
Transformer Rectifier
AC -23K Hz
Low Voltage
High Amperage
5-1
ESAB FABRICATOR 141i
Inductor
DC - Rippled DC -Smooth
Low Voltage Low Voltage
High Amperage High Amperage
Art # A-09846
THEORY OF OPERATION