MULTI-PORT, BI-DIRECTIONAL DC TO AC, AC TO DC, AND DC TO DE POWER CONVERTERS FOR INDIRECTLY TRANSFERRING POWER BETWEEN EACH OF THE PORTS

up/downconverters for use in transceivers

two way transmit/receive upconverter/downconverter for transmitting TV signals at microwave frequencies

ELECTRIC MOTORS, ELECTRIC GENERATORS, AND ELECTRIC MOTOR-GENERATORS