Torque transmission in instrumentation system - uses transmitting and receiving tachogenerators with power amplifiers in two lines linking phases and third link as reference

A torque transmission circuit provides accurate conversion of the angular displacement using a transmitting tacho generator and a receiving tacho generator. The respective phases of the transmitters and receivers are electrically connected. It is used in instrumentation systems for remote control, etc. There is a power amplifier (14, 15) inserted in each of two lines (6, 7) connecting the phases (3, 4) of the transmitter and the corresponding phases (11, 12) of the receiver. The link (8) between the third phase (5) of the transmitter and the third phase (13) of the receiver is used as a reference potential of the voltage supply of the power amplifiers. The direction of operation of the power amplifiers can be reversed.