Does anybody know how much current can I drag from a Rs232 of a PC. I have been trying to use signal DTR (pin 4 of the DB9) but I face a strange situation.
1) DMM reads 11v without charge
2) As soon as I connect it to a 3.1 regulator voltage comes down to 1.92V.
I have been searching on the WWW but I can´t find any information on this issue.
Thanks in advance
Joaquin Arechaga
1) DMM reads 11v without charge
2) As soon as I connect it to a 3.1 regulator voltage comes down to 1.92V.
I have been searching on the WWW but I can´t find any information on this issue.
Thanks in advance
Joaquin Arechaga