bigal_scorpio
Active Member
Hi folks,
I really need a pin out for this opto sensor I have, it looks like the one in the picture except it has only one lug at the side, it is marked on top 1990 and 1142, and even after relentless googling I found nothing.
I can work out the anode and cathode ok but cannot tell which is the Collector or Emitter, because the transistor only has 2 connections
So if u can help me to find out I would be very greatful.
Thanks for looking...............Al
I really need a pin out for this opto sensor I have, it looks like the one in the picture except it has only one lug at the side, it is marked on top 1990 and 1142, and even after relentless googling I found nothing.
I can work out the anode and cathode ok but cannot tell which is the Collector or Emitter, because the transistor only has 2 connections
So if u can help me to find out I would be very greatful.
Thanks for looking...............Al