Automatic gang switch having a heat ray sensor

Details Automatic gang switch having a heat ray sensor Automatic gang switch having a heat ray sensor

H - Electricity

01

H

H01H 37/32 (2006.01) H01H 43/00 (2006.01) H03K 17/94 (2006.01) H05B 37/02 (2006.01)

Patent

CA 2311189

The automatic gang switch having a heat ray sensor is fixedly mounted on a mounting frame having a rectangular-shaped opening. The length of a housing of the switch is approximately two-thirds of the length of the rectangular-shaped opening of the mounting frame, while the width of the housing is approximately equal to the width of the rectangular-shaped opening of the mounting frame. The switch includes a human body detecting section for detecting heat rays emitted from a human body and a circuit section. The circuit section includes a control circuit for generating a control signal to turn a load on for a predetermined operation holding time when the human body detecting section generates a detection signal, a load control circuit connected to a power source and the load in series for controlling power supply to the load depending on the control signal, an off-time power circuit connected in parallel with the load control circuit and having an input impedance such that when the load control circuit is off the load is not driven, the off- time power circuit supplying an electric power to the control circuit when the load control circuit is off, and an on-time power circuit for supplying the electric power to the control circuit when the load control circuit is on. The switch further includes a time setting section for setting an operation holding time and a mode setting section for changing over an operation mode of the control circuit.

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