I ran into a small problem with a circuit and was hoping for some help.  I
have an output from another device of which runs 1.1 volts on to 0 volts
off.  I tried to run this into a regular npn 2222a and it would not source
enough current to drive the transistor to the on state.  So I went to an
n-channel mpf102 fet and had better success but still I can not turn that
thing on all the way.  So I started thinking about a 741 op amp and played
with that with success.  This is the problem.  I don't have room for a -
supply on this board.  Does anyone have a way that I can get this output up
to a good ttl level with a meg ohm input resistance or so?
Thank you for any and all help.



Matthew Ormsby
Matt@epfsc.com
http://www.cyberport.com/~mormsby