Hi all, since I’m a newbie, I thought I would let you know where I’m at as far as electronics. I’m not an electronics tech so I don’t know a whole lot, but I have had some classes in collage about 30 years ago. I only remember or know enough to be dangerous.
I’m trying to use optocouplers to connect board that controls LEDs to provide open/short inputs to another board. The LED board has a 5VDC low current output with a common negative ground. I bought PS2501-1 Optically Coupled Isolators from Jameco but I cannot figure out what size resistors to use between the anode and 5V power. I used an online resistor calculator and I tried to test it with a 220 Ohm resistors and a 4.5V power supply, but I don’t know if I burned it up or if I maybe got it to hot with a 15 watt soldering iron. Anyway the coupler is done and there is no more life to it.
I’m giving up on trying soldering it and I’m placing an order for some sockets and replacements for the bad ones, but I also want to order the correct size resistors. So can someone tell me what to order?
I’m trying to use optocouplers to connect board that controls LEDs to provide open/short inputs to another board. The LED board has a 5VDC low current output with a common negative ground. I bought PS2501-1 Optically Coupled Isolators from Jameco but I cannot figure out what size resistors to use between the anode and 5V power. I used an online resistor calculator and I tried to test it with a 220 Ohm resistors and a 4.5V power supply, but I don’t know if I burned it up or if I maybe got it to hot with a 15 watt soldering iron. Anyway the coupler is done and there is no more life to it.
I’m giving up on trying soldering it and I’m placing an order for some sockets and replacements for the bad ones, but I also want to order the correct size resistors. So can someone tell me what to order?