hi everybody!
I would like to ask one thing:
I am using an optical coupler(6N137) for isolation in my project.
At the input I provide a square wave signal with GND reference and at the ouput I want to have the same square wave but with reference ground of 24V.
Here's my problem:
I can get the square wave output when the output ground is connected to GND. However when the output ground is connected to 24V, the output signal become constant 24V but not a square wave.
I want to ask the reason of this and how to solve it.
Thank you very much!
datasheet of 6N137
http://www.fairchildsemi.com/ds/6N/6N137.pdf
I would like to ask one thing:
I am using an optical coupler(6N137) for isolation in my project.
At the input I provide a square wave signal with GND reference and at the ouput I want to have the same square wave but with reference ground of 24V.
Here's my problem:
I can get the square wave output when the output ground is connected to GND. However when the output ground is connected to 24V, the output signal become constant 24V but not a square wave.
I want to ask the reason of this and how to solve it.
Thank you very much!
datasheet of 6N137
http://www.fairchildsemi.com/ds/6N/6N137.pdf