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AssigneeNihon Kohden Corporation
InventorsNaoto Akiyama, Masahiko Inomata, Ikuhiro Tsumura
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The invention has an object of providing a disarm circuit using a semiconductor switch device that can secure the safety of an electrotherapy apparatus by disarming even if the control of the semiconductor switch is disabled because of some cause. Therefore, the disarm circuit is provided with a transformer, its primary side area, its secondary side area, a resistor for disarming and the semiconductor switch device. The secondary side area is characterized in that a resistor for limiting excessive current for automatically turning on the semiconductor switch device by stored electric energy is connected between a positive terminal of an electric energy storage section and the gate of the semiconductor switch device.
A disarm circuit comprising:
An electrotherapy apparatus, comprising:
Dependencies are inferred from the claim text.