Macronix International Co., Ltd.

Hsien-Chung Chen

Tsung-Han Peng

Ching-Hui Wang

A detection circuit that includes a first relay coupled to a solenoid valve for sensing an operation state of the solenoid valve, a second relay coupled to the first relay adapted for activating in response to activation of the first relay, a sensor for detecting an operation state of a device, a third relay coupled to the sensor, wherein the senor is adapted for providing a signal to activate the third relay, and wherein the second relay is deactivated in response to the activation of the third relay, and a fourth relay coupled to the first and second relays, wherein the fourth relay is activated when the first relay is deactivated and the second relay is activated.

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Hsinchu, Taiwan

Hsien-Chung Chen