Pcb1_Protection Circuit (0558038317) - ESAB Powercut 1600 Service Manual

SECTION 4 DESCRIPTION Of OPERATION

4.8.5 PCb1_Protection Circuit (0558038317)

The Protection Circuit is designed to prevent the PC1600 from producing output current without a trigger
signal present. The comparator circuit senses if output current is above zero when the pwm_engage signal
is not present. It automatically shuts down the pwm circuit if that condition exists. This a redundant control
to ensure that a single circuit failure does not result in a dangerous output condition.
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