MR-BusIO-ACIN
TM
BusIO AC INPUT BOARD
User Manual
Description
The MR-BusIO-ACIN is an experiment
board for receiving 110-220VAC input and
translates into TTL 5VDC level. It is using
PC817 Photo-coupler IC to isolate high
current and low current. It is best for
monitoring the present of AC voltage.
The board can be use with MR-BusIO-
MAIN board or stand-alone. PCB size is
0.63” x 2.80”
Operation:
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
it’s receiving input 110-220VAC via 2-PIN
terminal. The current is flowing through
0.1uF 250V capacitor and 100Kohm 1W
resistor. The circuit acts as a Capacitive
Reactance which reduce the input AC
voltage. The benefit of this circuit is to
reducing the heat of the resistor. The
current then flow into bridge rectifier circuit
and activate PC817 circuit. The I/O pin
then becomes a logic LOW and an
indicator LED is illuminated
User can use this board to detect AC
voltage.
MR-BusIO-MAIN
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.
Copyright © 2007 MicroResearch
GRAVITECH GROUP
WWW.GRAVITECH.US
MR-BusIO-ACIN
TM
BusIO AC INPUT BOARD
User Manual
Notes
Contact Us
We maintain a website where you can get
information on our products, obtain
literature and download support files. Visit
us online at:
For sales questions or to place and order,
direct your e-mails to
sales@gravitech.us.
Refer to our website for product pricing,
shipping rates, payment instructions, and
for other info we need to complete your
order.
WWW.GRAVITECH.US
Use our online Forum or e-mail your
technical
support
questions
to
support@gravitech.us.
We try to respond
to your questions the same day.
Disclaimer: MicroResearch reserves the right to modify its products or literature, or
to discontinue any product at any time without prior notice. The customer is
responsible for determining the suitability of any device for any application
developed using MicroResearch components.
Copyright © 2007 MicroResearch
GRAVITECH GROUP
WWW.GRAVITECH.US
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