I am doing a project that is using a 5vdc signal from a watchdog timer and sending the signal to a bunch of NAND, AND, and OR gates to create a signal.
Here is my drawing. I'm trying to have one light on a 0vdc signal and another on for 5vdc signal. Both lights cannot be on at the same time. When Watchdog is 5v one light is on, when Watchdog is 0v the other is on. Where would I need pull up or pull down resistors?
There is one signal coming from each software in each station (A-F) and its going to one light tower.
Part numbers are: NAND: SN7401N, AND: SN7409N, OR: 74HC32, Photocoupler: DEK-OV-5DC/24dc/3
Would I have to limit current anywhere? Will this design even work?
Here is my drawing. I'm trying to have one light on a 0vdc signal and another on for 5vdc signal. Both lights cannot be on at the same time. When Watchdog is 5v one light is on, when Watchdog is 0v the other is on. Where would I need pull up or pull down resistors?
There is one signal coming from each software in each station (A-F) and its going to one light tower.
Part numbers are: NAND: SN7401N, AND: SN7409N, OR: 74HC32, Photocoupler: DEK-OV-5DC/24dc/3
Would I have to limit current anywhere? Will this design even work?