Need Help with Opto Switch

[bcromwell]

Can someone help me understand something, Trying to get the following Opto Switch working:

http://catalog.sensing.honeywell.com...PN=HOA6993-T51

I see the Operating Supply Voltage is 4.5-12vdc, but it says the forward voltage is 1.2v 15ma, Is the forward voltage the Emitter Led Voltage and the 4-12vdc is the reciever side?

And if the led voltage is 1.2 volts would a 700ohm resister be correct to bring 12volt down to the 1.2v with around 15ma?

Thanks for any assistance, I am an electronics n00b.

[mjarus]

Deleted.

[Al_The_Man]

It looks like the forward current for the LED is 15ma so you could probabally use a 1k resistor for the LED on 12v.
The output is open collector at 50ma.
Al.

[mjarus]

Ooops, Al is right. I deleted my original post as I didn't read the whole post closely and thought you were just trying to get 1.2V from 12V @15ma. My bad.

mjarus.