Abstract:
An inverter driving circuit includes a micro-controller and a PWM control unit to replace the double PWM control units adopted in conventional techniques. A voltage feedback signal may be captured from a connection line which links an inverter and a load. The voltage feedback signal is sent to the micro-controller to output a protection signal which activates the PWM control unit to output an electricity conduction cycle signal thereby to provide protection while the inverter driving voltage is abnormal.
Abstract:
A master-slave control architecture for inverters includes a master control circuit board which has a master control unit to output a plurality of frequency signals of the same phase and same frequency so that driving units on a plurality of separated slave control circuit boards on the rear end can be driven synchronously by the frequency signals to control electricity input of transformation units to transform voltage for outputting. Thereby the frequency of the driving electricity of the discharge lamps can be synchronized to maintain uniform luminance.
Abstract:
A power supply capable of displaying power use conditions of individual loads includes a power detection element located on a power supply circuit between a second side rectification voltage stabilizing circuit on the circuit of a power supply and each DC output power supply of loads at the rear end. The power detection element generates electric alterations of the DC output power supply and is coupled to a power conversion unit via a connection line to generate a power detection value. The power detection value is output to a load power display unit which displays a power value corresponding to each DC output power supply in a use condition. One of the loads may be connected to a reference ground, and the power value of total DC output power supply in use conditions can be displayed.
Abstract:
The present invention discloses a push-pull inverter circuit comprising a transformer with a power output end coupled to a load and two power input ends, and a power driver unit is connected between the two power output ends and a power supply unit, and the power driver unit receives a power signal and outputs two sets of drive signals having same frequency and opposite phase to the two power input ends as to constitute an inverter circuit that adopts a push-pull voltage drive signal to drive the transformer to operate and improve the output power of the transformer.
Abstract:
The present invention discloses a support system for a standard operation procedure, which comprises: a task database, recording the task-related information of the operation procedure; user ends, having information-display interfaces to present the information of the operation procedure; and an operation procedure distribution server, communicatively connected to the task database, reading corresponding data of the operation procedure from the task database according to an assigned task, distributing and transmitting the obtained data to the user ends via a communication network. The support system for a standard operation procedure of the present invention can realize the electronic and information-based data for a standard operation procedure, can direct different users to cooperate to complete a task, and can improve the problems of the conventional method that paper documents of operation procedure information are issued by man.
Abstract:
An electrically connecting structure of piezo-electric plates includes a circuit board and a plurality of piezo-electric plates disposed on and electrically connected to the circuit board. Anodes of power input of the piezo-electric plates of the present invention are individually electrically connected to the circuit board, the cathodes of power input of the plurality of piezo-electric plates are electrically connected together for forming a circuit of power input of electrical connection of the plurality of piezo-electric plate and the circuit board.
Abstract:
An audio/video playback control system of liquid crystal display television (LCD TV) is provided to control an audio signal system, an image display system and a backlight source system of an LCD TV, and the control system uses an audio/video control unit to maintain an activated status in normal conditions, and the audio/video control unit receives a signal transmitted from an external control interface to determine whether or not to output an activate signal to activate the audio processing unit or activate the video processing unit and the backlight source system, or jointly activate the audio processing unit, the video processing unit and backlight source system, so as to achieve the digital control of the LCD TV and the power-saving purpose.
Abstract:
A gas discharge lamp dimming control method aims to provide a dimming period after a start period when a gas discharge lamp is ignited. The dimming period has a duty voltage set initially or corresponding to a remained dimming value in a pervious OFF condition of the gas discharge lamp. Hence the gas discharge lamp is provided with electric energy and maintained in a start condition in the dimming period at any dimming value setting. The duty voltage during the dimming period lasts a length equal to that of the dimming period to allow the gas discharge lamp to gradually restore the required dimming illumination in the start condition and achieve a maximum dimming range.
Abstract:
A loading and unloading mechanism adopted for use on removable power supply modules includes in one embodiment a connection plug installed on a removable power supply and a connection trough connected to a power supply circuit of a system end (such as a personal computer). Another embodiment includes a connection trough on a system end to be installed on a holding unit which is movable to adjust the position relative to the system end according to the size of the removable power supply so that the removable power supply can be fully loaded into the computer. The loading and unloading mechanism thus formed can be adapted for the removable power supply of varying sizes and specifications.
Abstract:
The present invention relates to a control circuit of power supply with selectable current-limiting modes. Via a select circuit in the control circuit of the power supply of the present invention, the user himself can select and switch the operating mode of the current-limiting compare circuit to be one to one, one to multiple, multiple to multiple, or multiple to one mode in order to enable the loads to be compared by an individual set or integrated sets of current-limiting compare circuits; thereby, according to the power usage conditions of the various combinations of the loads, the user himself can select and switch the current-limiting mode in just a single power supply of the present invention, and further, the manufacturer is needless to fabricate variant specifications of power supplies.