Abstract: A method for controlling an inverter under altering voltage aims to change the electric conductive interval of the electric conductive cycle of the inverter corresponding to alteration of an input voltage so that the dimming duty cycle, electric conductive cycle and transformer oscillation duty cycle of the inverter can be maintained at a selected level. Thereby when the input voltage is altered, the existing dimming range can be maintained and actuation electricity output is stabilized. The transformer can be protected and the life span of the load can be extended.

Abstract: An air fan rotation speed control method and a structure thereof aim to provide an automatic control mode and a manual control mode at the same time to control rotation speed regulation of an air fan to achieve instant heat dissipation for an environment and reduce temperature rising of the environment efficiently. The present invention has a rotation speed determination mechanism that adopts the higher rotation speed request at a higher priority to regulate the rotation speed of the air fan in either control mode. Hence the temperature of the environment can be reduced at the higher rotation speed.

Abstract: An inverter circuit for inhibiting electricity transmission interference receives an electric signal output from an electricity input circuit, and includes a control unit to output an operating frequency, an actuation circuit to receive the operating frequency and divide the electric signal and output an actuation signal, and a transformer to receive the actuation signal and transform electricity to actuate a first load to operate. The actuation unit and the control unit are bridged by an isolation unit which separates grounding of the actuation unit and control unit on the first side and the second side of the transformer to enable the control unit to output the steady operating frequency and inhibit electric transmission interference.

Abstract: A waterproof structure for switch pins includes a pin exposed outside a switch to be connected to an electric wire. The pin and the electric wire are covered by a waterproof insulation material through an injection forming process to become an integrated manner. The pin and electric wire are fully waterproof. The electric wire also can be fastened firmly to the pin to prevent separation of the two.

Abstract: A transformer level driving circuit mainly aims to drive a medium voltage system. It includes a control unit to generate a resonant frequency and output phase signal waveforms, and a medium voltage driving circuit which includes a floating level unit and a driving unit which receives a medium voltage electric input. The driving unit actuates opening and closing at different time to enable the floating level unit to output a voltage floating level thereby to drive a ceramic transformer to control the medium voltage system through a low voltage level.

Abstract: The present invention discloses a fastener with lateral fastening mechanism, including an outer case, a slide block, a claw-shaped head, and a flexible member. The outer case is a hollow tubular member. A swing lever is pivotally connected inside the outer case. The slide block can move freely to a first position where the slide block is hidden inside the outer case, and to a second position where the slide block sticks out of the outer case. One end of the slide block is pivotally connected to the claw-shaped head, and the flexible member can constantly provide force for pushing the claw-shaped head and the slide block. A guide area of the slide block can interact with the swing end of the swing lever, and in the state of interaction, the position of the slide block can be decided to be either at the first position or the second position.

Abstract: A power supply power compensation structure uses a connector as power output ports. The power supply has a feedback signal connector. A power output connector is coupled with a transmission line set which joins another connector to couple with the feedback signal connector. Thereby power output quality can be monitored to maintain optimal output power delivered to electronic devices.

Abstract: A power saving circuit employing visual persistence effect for backlight modules aims to increase electric power at a duty mode to drive lighting units at a read end through driving units, and provide zero or lower electric power at a power saving mode to the lighting units at the rear end. Different lighting units generate light alternately in a first condition time sequence to enable user's eyes to get images. In a second condition time sequence power consumption of the driving units is reduced and user's eyes still can maintain visual sense of the images due to visual persistence effect, thereby electric power can be saved.

Abstract: A driver protection circuit for a push-pull type discharge lamp comprises a discharge lamp with two input electrodes, a driver circuit having two transformer units and two driver units, and a protection mechanism. Two transformer units are respectively connected to the two input electrodes and provide an opposite-phase push-pull type driving power. The front ends of the transformer units are respectively connected to the driver units which are parallel connected to a power source. The combination of the driver unit, the transformer unit, and the input electrode is defined to be a high voltage output section. The protection mechanism has two protection units respectively assigned to the high voltage output sections and can receive an abnormal signal of the corresponding high voltage output section and synchronically transmits the abnormal signal to two driver units and makes the driver circuit simultaneously stop or pause outputting power to the two input electrodes.

Abstract: The present invention discloses a dimming apparatus of a light emitting unit that uses a sensor to detect an external signal such as sound, shadow, temperature or digital image for changing the light emitting conditions such as brightness, color, frequency or blinking of the light emitting unit, so as to achieve the audio/video entertainment effects.

Abstract: A method for controlling power supply through multiple modulation modes aims to control an inverter of a selective characteristic through a cycle control signal of varying modulation modes to ensure that the inverter and the load on the rear end function in a reliable characteristic range and prevent the load from aging too quickly. The method includes generating a cycle control signal which includes ON-Time and OFF-Time, and adding a regulation energy of varying amplitudes or frequencies in the OFF-Time to provide varying modulation modes by mixing duty cycle, frequency modulation and amplitude modulation. The power supply can be controlled with a high reliability and a wide dynamic range.

Abstract: A keyboard having a lifting lid and a replaceable panel includes a keyboard body, a see-through upper lid made from a transparent or translucent material to cover the keyboard body and an ornamental panel sandwiched between the keyboard body and the upper lid on a keyboard non-operation zone. Users can replace a desired ornamental panel whenever desired to enhance the total aesthetic appealing of the keyboard body.

Abstract: The present invention discloses a fan assembly for a power supply and improves the traditional installation of a fan onto a power supply that leaves insufficient spaces for designing the connecting holes as required by the existing installation specification, and mounts the fan into a power supply at a specific position by a specific fixing member and uses the fixing member to keep the fan at a specific interval from the end surface of the power supply without being in direct contact with the power supply. Therefore, the interval from the end surface provides sufficient space for the design of the ventilation holes for the airflow and the connecting holes as required by the installation specification of the power supply.

Abstract: A pin anchoring structure for button switches has a wiring space in an insulation seat to hold a first pin and a second pin that are separated. Through a pressing action, the first pin and the second pin form an electric connection via a conductive connection member. The second pin has a pressed coupling section which is formed in a bulged curve. The seat has a bottom which also is formed in another bulged curve corresponding to the pressed coupling section. Thereby the second pin can be anchored securely on the bottom of the seat.

Abstract: A computer keyboard with a monitor on the operating panel thereof. Data entered by users from the keyboard is synchronously displayed on the keyboard monitor, eliminating the need for a user to look back and forth at the positions of keys and the data displayed on the monitor during a data entry process. The keyboard can also be an independent input device used to enter data even when the keyboard is disconnected from the computer. Such a keyboard has a memory unit that can temporarily store the entered data while the keyboard is disconnected, and then load the data into the computer when the keyboard recovers its connection with the computer. Thus, the keyboard is capable of receiving and storing data when the keyboard is disconnected, and transmitted stored data upon reconnection with the computer.

Abstract: A power supply stacked output port structure installed on a power output end of a power supply to integrate and output transformed DC power of a circuit board in the power supply. The structure includes a base output port which contains a first connector and a second connector that are arranged in a juxtaposed manner. A stacked output port is provided and horizontally located above the base output port that has at least a third connector. The third connector is electrically connected to the circuit board of the power supply through transmission lines. The stacked output port structure thus formed can increase the number of external equipment to be connected. The transmission lines used on the third connector can achieve more stable electric connection.

Abstract: A piezoelectric blades anchoring structure includes an electric input leg which has a resilient end in contact with the piezoelectric blades in normal conditions and a connection end inserting in a circuit board. The resilient end is covered by a protection plate which also covers the electric contact of the piezoelectric blades and is bonded to the piezoelectric blades. The structure thus formed can prevent oxidation from taking place on the electric contact and the electric input leg, and protect the electric input leg from being damaged, and achieve improved electric connection between the piezoelectric blades and the circuit board.

Abstract: A multi-stage button switch includes a body, an elastic element and a compression element. The compression element has an integrated flexible harness arm. The body has a track zone and a harness portion which is formed with a selected geometric shape to define the moving path of the compression element that includes a start position, a first stage compression position, a compressed position and a second stage compression position in this order. The button switch thus formed consists of fewer elements, is simply structured and can be fabricated and assembled easily.

Abstract: Provided is an inverter circuit including a rectification and filter circuit and an inverter driver circuit interconnected the rectification and filter circuit and a load. The inverter driver circuit comprises a second controller for receiving light adjustment cycle signals and outputting electrical conduction cycle signals wherein the second controller is either electrically connected to a power source or electrically connected to the rectification and filter circuit for obtaining a wave current, and an electrical conduction of the electrical conduction cycle signals depends on input on/off of the wave current at the second controller; and a driver operates in response to electrical conduction cycle signals and on/off of DC. A flashing effect is produced on the load and thus a power factor correction effect is produced without power factor corrector being involved.

Abstract: The present invention relates to a multi-period cycle-alternative switching mode power supply control device and its control method, and the device comprises: a power transfer control unit, a dimming bias control, a burst timing control, and a steering logic; and the method is a power control method that uses a burst timing control to produce an ON_OFF (High_Low) control timing, and after regulated power with a different amplitude is added to the OFF period of the burst period between two ON_OFF periods, two or more mixed periods are used to regulate the timing to a highly reliable and a broad dynamic range. The device of the invention can effectively control certain power transfer components of specific nature and assure that those components and the loading at the rear end can operate more efficiently in a reliable range of a specific nature.