TABLE OF CONTENTS
- THEORY OF OPERATION SECTION -
Section E-1
IDEALARC DC-600
THEORY OF OPERATION SECTION ................................ Section E
Power Supply Operation ..................................................E-2 - E-5
Input Line Voltage, Connector and Main Transformer .........E-2
Output, Rectification,Control and Feedback ........................E-3
Protection Devices and Circuits (Contactor Hold-In) ...........E-4
SCR Operation ..........................................................................E-5
TERMINAL
STRIP
CONTACTOR
TO
CONTROL
BOARD
REMOTE
CONTROL
MAIN
TRANSFORMER
CONTROL
TRANSFORMER
115 VAC
115 VAC
FAULT PROTECTION
PROTECTION
DEVICES &
CIRCUTS
CONTACTOR
HOLD-IN
(
)
FIRING BOARD
CONTROL
BOARD
PILOT
RELAY
F
E
E
D
B
A
C
K
F
E
E
D
B
A
C
K
OUTPUT
CONTROL
MODE
SWITCH
POSITIVE
TERMINAL
NEGATIVE
TERMINAL
LATCHING
RESISTOR
PILOT
RELAY
CHOKE
1
1
5
V
A
C
FAN
R
E
C
O
N
N
E
C
T
SCR BRIDGE
SHUNT
FIGURE E.1 Block Logic Diagram
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