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THEORY OF OPERATION
FIGURE E.6 – OUTPUT RECTIFIER AND CHOKE
| INPUT | MAIN | OUTPUT |
|
| RECTIFIER |
| ||
| TRAMSFORMER | RECTIFIER |
| |
INPUT | AND | POSITIVE | ||
CONTACTOR | RECONNECT |
| CHOKE | |
|
| LEFT |
|
|
THREE |
| SWITCH |
|
|
| BOARD |
|
| |
PHASE |
|
|
| |
|
|
|
|
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INPUT |
| FET |
POWER |
| ASSEMBLY |
INPUT | AUX. | CT |
TRANS |
| |
LINE |
| |
SWITCH |
| RIGHT |
|
| |
|
| SWITCH |
PROTECTION | FAN | BOARD |
BOARD |
| FET |
|
| |
|
| ASSEMBLY |
| POWER |
|
| BOARD |
|
CONTROL
BOARD
WATER
COOLERDISPLAY
BOARD
PC
INTERFACE
NEGATIVE
SHUNT
SNUBBER AND
SENSE LEADS
LCD
DISPLAY
KEYPAD
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OVERLAY
WF1 WF2
OUTPUT RECTIFIER AND CHOKE
The Output Rectifier receives the AC output from the Main Transformer secondary and rectifies it to a DC level with a 40 kHz ripple.
Since the Output Choke is in series with the positive leg of the Output Rectifier and also in series with the welding load, a filtered DC output is applied to the machine output terminals.
NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion.
