>What is your load? Regarding the three phase and transformer part of the circuit, the load i= s pretty much the diodes and a few resistors, so it is very small. >Are you driving a bus which has energy supplied by other systems (eg the power grid) or is this the sole energy source.? If >there are othersystem= s I believe you may be OK if your contribution is small enough The power supply for the electronics components is a +15/-15 V one, which gets its supply from an apart AC source. The +-15 V is tied to the ground reference of the feedback transf throught its 0 V pin. =20 >If you are all there is, it's magic :-) Just like electricity, isn=B4t it? ;) Regards, *Carlos Marcano* -Guri, Venezuela- --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist