I am interested in drawing power from an RS232 port so that it powers an
external circuit, only I am not too sure where to begin. The RS232 port
is not on the DTE side, but on the DCE side. I was able to measure
-7.59V DC and -25mA on the following PINs using a digital multimeter:
RI, DSR, DCD, CTS.

Is it possible to draw power from this DCE so that I have +3.3V DC at
approximately 140mA for my circuit? Let me know what you guys think.

Steph