Abstract:
This invention is related to a universal cell, the universal cell includes a positive terminal, a first conductor, a voltage balance circuit, a positive tab, an electrode spiral, a negative tab, a negative terminal, and battery container. The universal cell utilizes a characteristic of voltage balance circuit that the universal cell can be connected with another universal cell in parallel without generating a current-circulation loss at an idle state, a charge state, or a discharge state.
Abstract:
The invention related in cell parallel device is a circuit of SCR S1 to S4, comprises: a first terminal connected T1 to positive voltage terminal of first cell E1; a second terminal T2 connected to positive voltage terminal of second cell E2; and a third terminal T3 connected to voltage positive terminal of charge element CD or load LD, and trigger element TE connected between gate and anode of the SCR S1 to S4, the negative voltage terminal of charge element CD or load LD connected to negative voltage terminal of first cell E1 and second cell E2, can be not occur loop current in cells parallel circuit.
Abstract:
The switch in this invention is connected in series with two field effect transistor, comprises: the source S1 of first N-channel FET F1 and the source S2 of second N-channel FET F2 are directly connected together form a third terminal VA, the gate G1 of first N-channel FET F1 and the gate G2 of second N-channel FET F2 are connected together form a control terminal GA, the drain D1 of first N-channel FET F1 form a first terminal D1, the drain D2 of second N-channel FET F2 form a second terminal D2, the body diode DA of first N-channel FET F1 and the body diode DB of second N-channel FET F2, are back-to-back series connected together, the right side equivalent circuit F are first N-channel FET F1 and second N-channel FET F2 equivalent circuit, form a switch F of the present invention.
Abstract:
A rectifier driving circuit of the present invention, has a first driving element and a second driving element, switching element comprises a FET, a first driving element comprises the voltage drop resistor, a second driving element comprises the series-connected circuit of the diodes, the driving element for driving a FET, may be achieved rectify function.
Abstract:
A power source apparatus is disclosed in this invention, specifically a power source apparatus comprising a voltage amplitude control unit that employs an active power factor corrector to control the output DC voltage by applying positive or negative logic control voltage, incorporated with high frequency power source circuit and high frequency transformer, brightness of Cold Cathode Fluorescent Lamp (CCFL) or External Electrode Fluorescent Lamp (EEFL) are controllable and DC power is directly applied to DC load. Such method is accomplished by adjusting the amplitude of the supplying DC voltage for controlling the amplitude of the high frequency voltage of CCFL or EEFL, thus called Voltage Amplitude Method. Because of the characteristics of stable frequency, high resolution and linearity, VAM is broadly used in the control of luminance of discharge tubes, such as TFT-LCD TVs, LCD monitors and advertisement lamps. The impulse width controller of the present invention achieves the luminance control of CCFL or EEFL inside or outside the glow discharge zone.
Abstract:
The present controllable synchronous rectifier employs a Lus semiconductor to set synchronous rectification action in quadrant 1 of output characteristics of the conventional power MOSFETs. By controlling the voltage level of the gate-source voltage, the drain current can be controlled in the synchronous rectifier. Further, in combination with a protect opposite circuit to transfer a sinusoidal wave power supply or pulse power supply to a direct current power output, the synchronous rectifier is an indispensable high efficiency rectifier in the industry.
Abstract:
A protective and measure device for multiple cold cathode fluorescent lamps includes an electronic ballast functioning as a high-frequency power source for driving multiple cold cathode fluorescent lamps (CCFLs), primarily by parallel connecting one end of each of a plurality of CCFL to a measure element to measure the LED power source provided by the measure element's photocoupler, and concurrently serially connect the photocoupler's collect-emitter terminal, followed by employing comparators to assess the open circuit, over current, and under current among multiple cold cathode fluorescent lamps. Said electronic ballast serves to protect CCFLs, and thus contribute to the quality and protection required for large LCD monitors.
Abstract:
The Lus Semiconductor in this invention is characterized by replacing the static shielding diode (SSD) of traditional Power Metal Oxide Semiconductor Field Effect Transistors (Power MOSFETs) with polarity reversed (comparing with traditional SSD) SSD, Schottky Diode, or Zener Diode, or face-to-face or back-to-back coupled Schottky Diodes, Zener Diodes, Fast Diodes, or Four Layer Devices such as DIAC and Triac. With the proposed Power MOSFETs of which the drain to source resistors (Rds) are quite low, two major functions of high efficiency synchronous rectification may be achieved.
Abstract:
The present invention relates to one or two more starters in a serial wiring on a ballast or autotransformer. An impulse high voltage is generated at the output of the ballast. Alternatively, by using a full wave bridge rectifier applied on the AC power source of the autotransformer and a group of diodes, high voltage capacitor, and a control circuit generates an inpulse high voltage at the output of the autotransformer. The invention can be used with high voltage ignition of discharge lamps and DC high voltage for industrial applications.
Abstract:
The protection device of an electronic circuit is an electronic AC circuit protection device. The protection device has the characteristic of over-voltage protection, over-current protection, electronic switch, and soft start. Devices of the protection circuit are electronic box, electronic devices box, and power factor regulator that is designed in the structure of L.C. in parallel on the source side of the protection circuit. The protection circuit can be applied in switching power supply, electronic ballast, etc., electronic circuit devices. The main electrical electronic devices include Triac Thyristor, Silicon Controlled Rectifier, Phototriac Coupler and Photothyistor Coupler etc. The protection device has characteristic of standing surge current that solving the problem of life and reliability of electronic devices in now a day. The invention is a necessary protection device for electrical industrial.