In a message dated 97-11-11 11:57:31 EST, Dave Duley wrote: >Thomas, >What about transformer Isolation? >Dave Duley I2C depends on DC coupling since it is _level sensitive_, not edge-triggered, so transformer isolation won't work in general unless you come up with some sort of DC restoration scheme. --BN ---------------------------------------------------------------------------- Country Robot "Modular robot components 69 S. Fremont Ave. # 2 for education and industry" Pittsburgh, PA 15202 ----------------------------------------------------------------------------