Electrical Interfacing
General Purpose Outputs (GPOUT)
Version G.5
BitFlow, Inc.
NEO-11-9
Figure 11-4 GPOUT Driving Opto-Coupled Circuit using Galvanic Isolation
Figure 11-4 shows how the board’s open collector GPOUT can drive an user’s opto-
coupled device configured for galvanic isolation between the board and the user. The
power to the user’s LED is supplied by the board’s 5V through a 220 Ohm resistor.
This is achieved by inserting the short in position 1-2 at JP1. The jumper at JP2 is
removed. The open collector driver will sink the current from the LED. There is no gal-
vanic connection between the board and the user’s circuit. Information is passed from
the board to the user as light, transmitted by the LED and received by the photo-tran-
sistor.
GPOUT
JP3
JP2
+12V
+5V
GPOUT_VCC
GPOUT_OC
7407
1K
220
680
User C
i
rcu
i
t
Opto-Coupler
1
2
3
Frame Gra
bb
er
Содержание NEO-PCE-CLB
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