Filter
Top Products
E-8
THEORY OF OPERATION
E-8
POWER WAVE 455/POWER FEED 10
rectifies it to a DC voltage level. Since the
output choke is in series with the negative
leg of the output rectifier and also in series
with the welding load, a filtered DC output is
applied to the machine output terminals.
Refer to Figure E.7.
OUTPUT RECTIFIER
AND CHOKE
The output rectifier receives the AC output
from the main transformer secondary and
FIGURE E.7 — OUTPUT RECTIFIER AND CHOKE.
INPUT
CONTACTOR
INPUT
RECTIFIER
R
E
C
O
N
N
E
C
T
CONTROL BOARD
RIGHT
SWITCH
BOARD
LEFT
SWITCH
BOARD
MAIN
TRANSFORMER
CURRENT
SENSOR
CHOKE
OUTPUT
TERMINAL
OUTPUT
TERMINAL
POWER
BOARD
115VAC
RECEPTACLE
P
O
W
E
R
S
W
I
T
C
H
I
N
P
U
T
B
O
A
R
D
FAN
MOTOR
AUX.
TRANS.
AUX.
TRANS.
RECTIFIER
AUX.
RECONNECT
PRIMARY
CURRENT
SENSOR
WIRE FEEDER
RECEPTACLE
RS232
CONN.
THERMOSTATS
STATUS
LIGHT
THERMAL
LIGHT
CURRENT FEEDBACK
VOLTAGE FEEDBACK
65VDC
40VDC
CONTROL SIGNALS
PWM
DRIVE
CAPACITOR
VOLTAGE
FEEDBACK
CAPACITOR
VOLTAGE
FEEDBACK
PWM
DRIVE
VOLTAGE
SENSE
RECEPTACLE
#1
#2
S
W
I
T
C
H
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC