Good Day All.
I have never used or worked with Optocouplers before so I would like some advice before I go out and buy any.
I have built my own stepper motor control board that is connected to my laptop printer port, eveything works, but I think I am getting noise on the ground or singal pins so I would like to isolate the printer port from the control board, I have read the best way to do this is to use Optocouplers.
I have a total of 10 pins I want to isolate with optocouplers.
All the outputs from the printer port are low unto step signals are sent.
The IC's on my controller board need to see at least 2.65v before they activate.
For testing I would like to buy the Optocouplers from maplin as it's local, but that limits me to only the following.
4N25 £0.79 Each, Datasheet.
SFH618 £0.89 Each, Datasheet.
MOC3020 £0.99 Each, Datasheet.
ILQ74 £1.59 Each, Datasheet.
Can someone please advice me how I would go about using Optocouplers in my design.
Thanks for your time.
Best Regards.
I have never used or worked with Optocouplers before so I would like some advice before I go out and buy any.
I have built my own stepper motor control board that is connected to my laptop printer port, eveything works, but I think I am getting noise on the ground or singal pins so I would like to isolate the printer port from the control board, I have read the best way to do this is to use Optocouplers.
I have a total of 10 pins I want to isolate with optocouplers.
All the outputs from the printer port are low unto step signals are sent.
The IC's on my controller board need to see at least 2.65v before they activate.
For testing I would like to buy the Optocouplers from maplin as it's local, but that limits me to only the following.
4N25 £0.79 Each, Datasheet.
SFH618 £0.89 Each, Datasheet.
MOC3020 £0.99 Each, Datasheet.
ILQ74 £1.59 Each, Datasheet.
Can someone please advice me how I would go about using Optocouplers in my design.
Thanks for your time.
Best Regards.
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