| 摘要 |
PURPOSE:To protect a data signal on a transmission line against adverse influence by employing a transmission transformer in the communication of data signal for the purpose of isolation between a transmitter and the transmission line and grounding the neutral point of the transformer winding on the transmission line side to the body in each transmitter. CONSTITUTION:When high speed digital transmission is carried out between transmitters 1, 2, a digital signal is transmitted from the transmitter 1 through a transmission transformer 3 on a transmission line 7 to a transmission transformer 4 and received by the transmitter 2. When such a transmission system is applied on a train, an in-phase noise voltage wave induced in the transmission line 7 from a noise source 8 during data transmission is discharged through the neutral points 5, 9 of the winding of closer or both transmission transformers 3, 4 on the transmission line side to ground points 6, 10. Consequently, influence of noise can be eliminated in shorter time. |
