Hi, I'm making the serial port receiver and I have a trouble.
When winlirc is not running, the circuit receive a -10v. And when winlirc is running, only
 
+2.15v, not the +8v the circuit needs.
So, I'll need a low-drop who make it up to the 5v.
The question is, if I connect this circuit to other computer who can send the 8v the
 
circuit needs, what will happen? Will the low-drop chip limit it to the 5v or will it send
 
the 8v directly and ruin the circuit?
 
Thanks