No luck Dwayne, 0V when SHDN is active. That would be too easy. :) Also Peter (and anyone else that wouldn't mind lending a hand) here's what I'm looking at now: I'm running two LM10's off of the battery. The first op-amp has two purposes the first is to rereference the bridge output to ground and to amplify the signal alittle bit. The second LM10 is to amplify the signal again. The output of the second op-amp goes to the inverted shutdown gate. Simply put, when a pressure is sensed the inverted shutdown gate on my boost reg goes high and the regulator switches on while the pressure is sensed. Here's my problem: I want to keep this /shdn gate on so I get the pic to hold the gate high. The problem is at the same time I'd like to supply 3.3V now to the transducer (to make it more sensitive). But I can't apply the 3.3V to the transducer directly as the batteries 1.5V is already powering it. How can I remove the 1.5V from the transducer and reapply 3.3V? I don't care if power is momentary shut-off. I would like this to be lower power, as was the whole initial point. :) Thanks in Advance, Aaron -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body