Tweco 42 CutMaster Service Manual - Manual (Page 35)

Manual 0-5171 5-1 Theory of operation
THEORY OF OPERATION CUTMASTER 42
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.
Inverter Technology - Summary
Rectifier Filter IGBT Transformer Rectifier Inductor
AC-50/60Hz DC-Rippled DC-Smooth AC-23KHz AC-23KHz DC- Rippled DC-Smooth
High Voltage High Voltage High voltage High Voltage Low Voltage Low Voltage Low Voltage
Low Amperage Low Amperage Low Amperage Low Amperage High Amperage High Amperage High Amperage
Art # A-09846
SECTION 5:
THEORY OF OPERATION