Abstract: Disclosed is a power supply circuit of an electric device. The power supply circuit comprises a power source configured to output a power source voltage; a power source voltage detecting circuit configured to detect the power source voltage, and to output a first voltage control signal; a leading edge delay circuit configured to receive the first voltage control signal, and to output a second voltage control signal; an electronic switch connected in series between the power source and the load, configured to turn on or turn off power supply from the power source to the load; and a slow turn-on circuit configured to receive the second voltage control signal.

Abstract: Disclosed is a power supply circuit of an electric device. The power supply circuit comprises a power source configured to output a power source voltage; a power source voltage detecting circuit configured to detect the power source voltage, and to output a first voltage control signal; a leading edge delay circuit configured to receive the first voltage control signal, and to output a second voltage control signal; an electronic switch connected in series between the power source and the load, configured to turn on or turn off power supply from the power source to the load; and a slow turn-on circuit configured to receive the second voltage control signal.

Abstract: An adapter for retrofitting a conventional gooseneck faucet to allow for touch-free activation. The sensor unit of the adapter is attached by simply passing it over the spout of the gooseneck faucet and towards the base of the faucet where it is locked in place by a clamp. Once in place, the sensor unit uses infrared light to sense the proximity of hands under the faucet. When hands are sensed, the control unit mounted under the sink will activate the faucet for as long as hands remain under the faucet.

Abstract: A cover latch is used to secure a cover of a dispenser apparatus by engaging catches in the dispenser apparatus while being held in place by attached springs. The cover latch consists of a handle connected to a latch assembly through a rod. Pulling on the handle compresses the springs connected to the latch assembly and frees the latch assembly from catches in the dispenser apparatus. An O-ring on the rod seals the dispenser apparatus from contaminants.

Abstract: A dispenser apparatus and dispensing method for dispensing a product stored in a container by pressing a dispensing tube connected to the container. A motor rotates a cam that extends a press plate to press the dispensing tube against a back plate. A check valve permits unidirectional dispensing of the product from the container. A pinch-off unit pinches the dispensing tube or a second check valve is used to prevent the product from returning to the container while the press plate presses against the dispensing tube.