Abstract: A precision voltage control circuit applicable to a PWM (Pulse Width Modulation) circuit can offer CCFL (Cold Cathode Fluorescent Lamp) or EEFL (External Electrode Fluorescent Lamp) tubes a stable high frequency voltage or current, so that each CCFL or EEFL tube can get an appropriate compensation current and an optimal emitting efficiency and enhance its emitting quality. The circuit also has an overload current, low current, and overload voltage and low voltage protective circuit to protect the CCFL or EEFL tubes from being injured. The circuit can also be applied to the TFT LCD TV or other large LCD panels, and develops the best display effect of each LCD tube.

Abstract: The Lus, Semiconductor in this invention is characterized by replacing the static shielding diode (SSD) of traditional Enhancement Mode Field Effect Transistors (EMFETs) or Depletion Mode Field Effect Transistor (DMFETs) 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 EMFETs or DMFETs of which the drain to source resistors (Rds) are quite low, high efficiency synchronous rectification may be achieved.

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 Enhancement Mode field Effect Transistor (EMFETs) 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 EMFETs of which the drain to source resistors (Rds) are quite low, two major functions of high efficiency synchronous rectification may be achieved.

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 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 AC/DC conversion and DC voltage regulation may be achieved.

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.

Abstract: A precision voltage control circuit applicable to a PWM (Pulse Width Modulation) circuit can offer CCFL (Cold Cathode Fluorescent Lamp) or EEFL (External Electrode Fluorescent Lamp) tubes a stable high frequency voltage or current, so that each CCFL or EEFL tube can get an appropriate compensation current and an optimal emitting efficiency and enhance its emitting quality. The circuit also has an overload current, low current, and overload voltage and low voltage protective circuit to protect the CCFL or EEFL tubes from being injured. The circuit can also be applied to the TFT LCD TV or other large LCD panels, and develops the best display effect of each LCD tube.

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: A multi-stage DC/AC coupled impact force enhancing device of an electric nailer includes an AC power source, a half-wave rectifying circuit, a doubler rectifying filter circuit, a DC steady-state circuit, an AC phase sampling circuit, a phase start circuit, a switch start circuit, an impulse oscillation circuit, a decoding counting circuit, an energy-storage circuit, a solid-state switch circuit, and an electromagnetic coil. Thus, the multi-stage DC/AC coupled impact force enhancing device can couple the alternating/direct current voltage to serially discharge the voltage to the electromagnetic coil of the electric nailer in a short period of time, thereby generating a larger impact force.

Abstract: An impact enhancing device of an electric nailer, comprising: an AC power source, a protection circuit, a first switch, a full-wave rectifier, a timing controller circuit, an energy-storage circuit, a solid-state switch circuit, an electro-magnetic coil device, a DC power source, a second switch, a reset enable single shot trigger circuit, and a relay. Thus, the electric nailer provides a larger impact force with a smaller volume and a lighter weight.

Abstract: A multi-stage impact force enhancing device of an electric nailer includes an AC power source, an AC input control circuit, a tripler rectifying filter circuit, a DC steady-state circuit, a timing switch circuit, a decoding counting circuit, an impulse oscillation circuit, multiple energy-storage circuits, multiple solid-state switch circuits, and an electromagnetic coil. Thus, the multi-stage impact force enhancing device can serially discharge a voltage to the electromagnetic coil of electric nailer in a short period of time, thereby generating a larger impact force.

Abstract: An impact enhancing device of an electric nailer, comprising: an AC power source, a protection circuit, a first switch, a full-wave rectifier, a timing controller circuit, an energy-storage circuit, a solid-state switch circuit, an electromagnetic coil device, a DC power source, a second switch, a reset enable single shot trigger circuit, and a relay. Thus, the electric nailer provides a larger impact force with a smaller volume and a lighter weight.

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: An invention that is an application of U.S. Pat. No. 5,583,395. Using one Starter or two Starters or more than two Starters in serial wiring apply on a Ballast or Autotransformer; therefore, an Impulse High Voltage is generated at the output of the Ballast. Or using a full wave bridge rectifier applies on the AC Power Source of the Autotransformer and a group of Diodes, High Voltage Capacitor, and a Control Circuit applies to the output of the Ballast; therefore, an Impulse High Voltage is generated at the output of the Autotransformer. This Invention can be applications of 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.

Abstract: A new fluorescent device including an electronic fluorescent starter, a phase leading capacitor, a ballast, a bridge rectifier, a fluorescent lamp, a brightness compensation circuit, and a control circuit, the electronic fluorescent starter consisting of a master switch circuit, an ignition circuit and a time control circuit, wherein the electronic fluorescent starter matches with the ballast to turn on the fluorescent lamp; the control circuit turns the electronic fluorescent starter to the open circuit state when the fluorescent lamp is turned on; the brightness compensation circuit improves the intensity of light from the fluorescent lamp.

Abstract: A microcontroller for providing remote control of electrical switches and comprising a control unit and a switch unit. The control unit comprises a telephone interface, a keyboard, a central processing unit and a character pattern interface. The switch unit comprises a data decoder, a central processing unit and a plurality of solid state relays, wherein the solid state relays are controlled to selectively connect power to loads or disconnect power therefrom, in response to commands sent from the keyboard directly, or through a telephone or radio telephone or a computer network from the keyboard.

Abstract: A battery charging device capable of charging any variety of rechargeable batteries and capable of being powered by either a 110 volt or a 220 volt A.C. power source. The battery charging device comprises an integrator circuit having a D.C. power source; a voltage comparator; a solid state relay; a D.C. output circuit; a positive voltage feedback circuit; and a negative voltage feedback circuit. The integrator circuit receives A.C. power from an A.C. power source and provides an output to the voltage comparator. The voltage comparator, in turn, is connected so as to provide an output to the solid state relay. The solid state relay preferably includes a zero voltage closing circuit and provides an output to the D.C. output circuit. The D.C. output circuit is connected to a battery-to-be-charged and provides an output D.C. voltage thereto. The D.C. output circuit is also connected to and provides outputs to the negative and positive feedback circuits which, in turn, provide feedback to the voltage comparator.

Abstract: A solid state relay having an input circuit and a triac Darlington circuit coupled by a phototriac circuit. The input circuit having a bipolar indicator lamp for identifying the polarity and presence of an input voltage. The phototriac circuit and the triac Darlington circuit each having bipolar indicator lamps to indicate ON/OFF operation of respective triacs therein.