Abstract:
The method for using semiconductor intelligence line of the invention, which is to set the semiconductor intelligence line on the drain source voltage axis of the first semiconductor output characteristic, has a gate voltage setting, which indicates the function of limiting the application limit of the drain source current on the output characteristic.
Abstract:
The present invention related to a cell interface. The cell interface includes four diode D1 to D4. A first terminal connected to a voltage terminal of first cell; a second terminal connected to a voltage terminal of second cell; and a third terminal connected to an external voltage terminal of an external electric circuit, another external voltage terminal connected to another voltage terminal of first cell and second cell. The cell interface can prevent from occurring loop current in parallel cell.
Abstract:
A single-ended forward converter of the present invention, has first and second switching element comprises a pair Lus N-Channel FET, a first driving circuit comprises the series-connected circuit of the first voltage drop resistor and first zener diode for driving first Lus N-Channel FET, a second driving circuit comprises the series-connected circuit of the second voltage drop resistor and second zener diode for driving second Lus N-Channel FET.
Abstract:
A full-wave rectifier of the present invention, has an input AC power source, a pair of input terminal A and B, a pair of first and second switching element Q1 and Q2 comprises a first and a second Lus P-Channel FET, a pair of third and fourth switching element Q3 and Q4 comprises a third and a fourth Lus N-Channel FET, a pair of driving element R1 and R2, a load L1 and DC voltage output terminal C and D, the major function of AC to DC conversion.
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 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 circuit arrangement having the function of preventing over-voltage damage which is structured by special copper foil or conductive wires and applies the burst absorption principle to form a short circuit from the input end and the output end of a circuit when the circuit is subject to an over-voltage or a transient electrical strike, so as to protect the electronic elements within the area of the circuit. The method can be put into application in a transformer, a switching power supply, an electronic computer, a solid-state relay and other similar electronic equipment. The arrangement of the present invention has undergone a number of high voltage and electrical striking tests with more than satisfactory results and is suitable for use in industries.
Abstract:
The invention related in cell interface is a circuit of diode D1 to D4, comprises: a first terminal connected to positive voltage terminal of first cell E1; a second terminal connected to positive voltage terminal of second cell E2; and a third terminal connected to external positive terminal VP, the external negative voltage terminal VN connected to negative voltage terminal of first cell E1 and second cell E2, can be not occur loop current in parallel circuit.