Rockwell Automation DC3R Isolation Option Board User Manual

Page 15

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9

Installation

Figure 7. Open Collector PNP Transistor

Used as a Polarity Reversal Switch

Figure 8. Polarity Reversal Using NPN Transistor

PNP

TRANSISTOR

ADD 39K AND 10K

OHM RESISTORS

AS SHOWN

NPN

TRANSISTOR

E

C

B

10K

39K

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