Patent ID: 11916547
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The semiconductor relay device according to claim 1, wherein:
the switch circuit includes:
a fourth transistor having a third end coupled to the first terminal and a fourth end;
a fifth transistor having a fifth end coupled to the fourth end and a sixth end coupled to the second terminal;
a second zener diode having a cathode coupled to the third end;
a third zener diode having an anode coupled to an anode of the second zener diode and having a cathode coupled to a gate of the fourth transistor;
a fourth zener diode having a cathode coupled to the fourth end;
a fifth zener diode having an anode coupled to an anode of the fourth zener diode and having a cathode coupled to the gate of the fourth transistor;
a sixth zener diode having a cathode coupled to the fifth end;
a seventh zener diode having an anode coupled to an anode of the sixth zener diode and having a cathode coupled to a gate of the fifth transistor;
an eighth zener diode having a cathode coupled to the sixth end; and
a ninth zener diode having an anode coupled to an anode of the eighth zener diode and having a cathode coupled to the gate of the fifth transistor.