Illuminance linked power shut-off device, and silence-linked power shut-off device

摘要

(57) [summary] (modified with) [purpose] it is possible to prevent electrical appliances power off forgotten, to provide a device that can help save electrical energy. [Configuration] commercial power supply 1 and is arranged detector 3 of the current flowing between the power supply circuit of electrical appliances 2, illuminance detector 4 which converts the output of the current detector 3, the illumination of the surrounding electrical appliance 2 into an electrical signal The arranged around the appliance 2, illuminance-linked power for opening and closing the electrical contacts 7 by the control circuit 5 by the correlation of the output voltage generated by the illumination detection unit 4 is shut off the power to the appliance retains its state shut-off device. Arranged detector 3 of the current flowing between the commercial power supply 1 and the power supply circuit of the appliance 2, electric appliances and the output of the current detector 3, a silence detector 4 which converts the sounds around the appliance 2 into an electrical signal arranged around the two, the correlation of the output voltage generated by the silence detector 4 is cut off the power to the electrical appliances silence ganged power cutoff unit for opening and closing the electrical contacts 7 by the control circuit 5 holds its state.