| 摘要 |
A transmitter of a railway circuit is provided to enhance an insulation property of inner components of the transmitter by replacing electric lines with PCB(Printed Circuit Board) lines. A transmitter(40) of a railway circuit includes an external case, a PCB(42), a diode fixing plate(44), a diode(46), and a transistor(60). Various boards and chips are embedded in the external case. The PCB is coupled with an inner portion of the external case. Circuit lines are printed at a rear surface of the PCB. The diode fixing plate is laminated on an upper surface of the PCB. Cathode terminals of the diodes are coupled with each other and are soldered with each other through a through-hole of the PCB. An anode terminal of the diode passes through the through-hole and is soldered on the PCB. The transistor is soldered, while the cathode and anode terminals penetrate the through-holes. |
