MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD
User Manual
Copyright © 2007 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
GRAVITECH.US
uResearch
GRAVITECH GROUP
MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD
User Manual
Copyright © 2007 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
The MR-BusIO-DCOUT is an experiment
board for switching DC output voltage by
using NPN Power Transistor 2SC1061.
The advantage of this transistor is VCE(sat)
= 1V (max.) at IC = 2A and IB = 0.2A. The
output DC voltage is switching ON and
OFF by TTL level 5VDC. It is using PC817
Photo-coupler IC to isolate high current
and low current. It is best for controlling
DC voltage for up to 50V at 3A.
The board can be use with MR-BusIO-
MAIN board or stand-alone. PCB size is
0.63” x 2.80”
The PC817 require at least 5mA to drive
input photo-coupler LED. It can take up to
6V in reverse bias. For an output
(between collector and emitter), it can
drive up to 35V with 50mA continuous
current.
The operation of this board starts when
applying logic HIGH to an I/O pin. The
voltage get divide down to turn on BC547
transistor which then activate PC817
photo-coupler and indicator LED. The
output of PC817 is driving 2SC1061 which
start the current flow at the 2-PIN terminal
block.
User can connect output DC load up to
50V at 3A continuous current. Total power
can be up to 25W at 25°C.
This board can be use to control DC
voltage.
The MR-BusIO-MAIN is available for
purchase via our website. If you don’t see
the item you need, please contract our
sales department at sales@gravitech.us
• MR-BusIO-MAIN
Experiment board which receives output
signals from any microcontrollers. The
signals then distribute to daughter boards
for each experiment. It designed to
connect directly with 10PIN MRconnect©.
It is a quick and easy way to control up to
8 daughter boards.
Description
MR-BusIO-MAIN
Operation:
MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD
User Manual
Copyright © 2007 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
FIG 1: MR-BusIO-DCOUT Board Layout
FIG 2: MR-BusIO-DCOUT Schematic
MR-BusIO-DCOUTTM BusIO DC OUTPUT BOARD
User Manual
Copyright © 2007 MicroResearch
GRAVITECH GROUP WWW.GRAVITECH.US
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