7 Threads found on edaboard.com: Opto rs232
Some digital isolator have internal isolated power supply, ISO7242 isn't among them. To operate the device you need an isolated power supply.
A 25 MBPS isolator is somehow overkill for a UART interface. Slower opto couplers might be sufficient with the power that can be derived from rs232 handshake lines.
Analog Circuit Design :: 02-18-2016 02:44 :: FvM :: Replies: 4 :: Views: 273
Cool Morning to all!
I am interfacing My Micro board by max232 to My system.. Micro board consists of 4 relay . Each relay is driving up to 12V 2A current.. Resistive load.. Relays are Isolated by opto-cuopler (MCT6)... Without load total system is working fine. while connecting load System gets hanging problem.. mean
Elementary Electronic Questions :: 07-27-2013 00:40 :: prabhukaran3 :: Replies: 2 :: Views: 1673
Is your opto fast enough?
Professional Hardware and Electronics Design :: 01-11-2012 10:36 :: barry :: Replies: 5 :: Views: 1312
Solution: opto-isolated balanced line driver/receiver combo, such as IL3585. RS-232 is unbalanced and very prone to noise.
Beware that in the case of opto-isolation every board should have it's own power supply.
Power Electronics :: 11-02-2011 08:45 :: ZASto :: Replies: 10 :: Views: 3061
Using opto-isolator: Schematics of delabs: rs232 with opto-Isolation
---------- Post added at 15:07 ---------- Previous post was at 15:03 ----------
PC Serial Port Receiver - Freecircuits.
PC Programming and Interfacing :: 10-02-2010 11:07 :: john blue :: Replies: 7 :: Views: 2870
it should be small and will be work at any baud rate.
Any opto isolator will work as long as you know the pin assignment. The question is rather if it will fit whatever you plan to measure. There are OI of different sizes and shapes.
Microcontrollers :: 04-14-2008 10:48 :: Prototyp_V1.0 :: Replies: 6 :: Views: 4304
can any one pls suggest me any opto couplers for rs232 bus with a min baud rate of 115200. i saw a couple of opto couplers but i couldnt find the speed grade in it.
thanks in advance
Microcontrollers :: 07-19-2007 00:27 :: s3034585 :: Replies: 2 :: Views: 1853