This is NOT a typical DC output voltage
waveform. One output SCR is not function-
ing. Note the increased ripple content. One
SCR gate was disconnected to simulate an
open or non-functioning output SCR. Each
vertical division represents 20 volts and
each horizontal division represents 5 mil-
liseconds in time. The machine was loaded
with a resistance grid bank.

Note: Scope probes connected at machine
output terminals: (+) probe to electrode, (-)
probe to work.

Volts/Div . . . . . . . . . . . . . . . . .20 V/Div.

Horizontal Sweep . . . . . . . . . .5 ms/Div.

Coupling . . . . . . . . . . . . . . . . . . . . .DC.

Trigger . . . . . . . . . . . . . . . . . . .Internal.

SCOPE SETTINGS

MACHINE LOADED TO 220 AMPS AT 22 VDC

ABNORMAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED

ONE OUTPUT SCR NOT FUNCTIONING

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