Well gents, to wrap up this one, I will do the analog mltiplier and then at least try out the integrator idea first. If it works properly, at least it saves a massive amount of work. Thanks Chris~ Roman Black wrote: > > Bob Ammerman wrote: > > > > Yeah, except he wants to integrate over a _VERY_ long time period. This > > won't happen in the analog world! > > Sure, that's why its best to use a hybrid system, > the analog front end gives short term integration, > the PIC then samples at a low freq (100Hz??) > and does the final integration/time calcs. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads