Section e theory or operation, Theory of operation – Lincoln Electric IDEALARC CV-300 User Manual
Page 33
THEORY OF OPERATION
IDEALARC CV-300
Figure E.1 - Block Logic Diagram.
NOTE: Unshaded areas of Block Logic
Diagram are the subject of discussion
THEORY OF OPERATION SECTION ...................... Section E
Power Supply Operation .................................................E-1
Input Line Voltage, Line Switch and
Main Transformer ........................................................E-1
Output Rectification, Filtering, Control and
Feedback.....................................................................E-2
Protection Devices and Circuits ...................................... E-3
SCR Operation .................................................................E-4
TABLE OF CONTENTS
- THEORY OF OPERATION SECTION -
INPUT
LINE
SWITCH
MAIN
TRANSFORMER
RECONNECT
PANEL
FAN
MOTOR
OUTPUT
RECTIFIER
+
SHUNT
CHOKE
OUTPUT
TERMINALS
CONTROL BOARD
F
E
E
D
B
A
C
K
G
A
T
E
S
METER
OUTPUT
CONTROL
14 PIN
AMPHENOL
TRIGGER AND REMOTE
12VAC
12VAC
4
2
V
A
C
-
CAPACITORS
+
F
E
E
D
B
A
C
K
-
-
115VAC