Filter
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This is NOT the typical voltage wave-
form. The output capacitor was dis-
connected from the circuit. Note the
increased ripple in the waveform. This
condition simulates the faulty output
filter capacitor. Each vertical division
represents 10 volts and that each hor-
izontal division represents 20 millisec-
onds in time.
Note: Scope probes connect at the
machine output terminals. Positive
probe to (+) terminal, negative probe
to (-) terminal.
SCOPE SETTINGS
Volts/Div.....................10V/Div.
Horizontal Sweep...20 ms/Div.
Coupling.............................DC
Trigger.........................Internal
ABNORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
TROUBLESHOOTING & REPAIR
F-24 F-24
COMPACT WIRE WELDERS
0 volts
C1
10Volts 20ms
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