| 摘要 |
A diode circuit of the present invention comprise an input/output terminal connected to the transmission line, a power supply terminal connected to the power supply, a plurality of diodes connected in series between the input/output terminal and the power supply terminal and a capacitive element having one end connected to a connected point of the plurality of diodes and the other end connected to the ground. In the input/output terminal, an applied signal from the transmission line exceeds the predetermined potential, it is clamped to the predetermined potential by the plurality of diodes connected in series. At the connecting points among a plurality of diodes and the input/output terminal, vibration of potential is reduced by the capacitance element.
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