Hi,
I'd like to turn an LED on and off by controlling the CD (carrier
detect) line of an RS232 port. I understand that the RS232 port runs at
+15volts. If I calculate the current draw for the LED and put an
appropriate resistor in series will I have a good solution?
Or, do I need some sort of voltage regulator in line?
My goal is to also put an opticaldetector on another RS232 port so I
can send a signal between two computers on two different networks (that
can not be connected any other way).
Thank you!
John
I'd like to turn an LED on and off by controlling the CD (carrier
detect) line of an RS232 port. I understand that the RS232 port runs at
+15volts. If I calculate the current draw for the LED and put an
appropriate resistor in series will I have a good solution?
Or, do I need some sort of voltage regulator in line?
My goal is to also put an opticaldetector on another RS232 port so I
can send a signal between two computers on two different networks (that
can not be connected any other way).
Thank you!
John