Abstract: Low noise voltage generation circuitry includes a voltage source, a low-pass filter with one or more filter stages, and an amplifier selectively coupled to the filter stages. Each filter stage includes a resistor and a pair of capacitors of equal capacitance. The amplifier has an input selectively coupled to an output port of the voltage generation circuitry and has an output selectively coupled to the pair of capacitors in each filter stage. During a sensing phase, the amplifier senses the voltage at the output port. During a first charging phase, the amplifier has a first polarity and charges one of the pair of capacitors in each filter stage. During a second charging phase, the amplifier has a second polarity and charges another one of the pair of capacitors in each filter stage. During a final phase, the pair of capacitors within each filter stage are shorted together to cancel out an amplifier offset while the output port instantaneously settles to the target voltage.

Abstract: A cooling module includes a casing with a thermal-transmittance wall having an interior surface and an exterior surface, a coolant inlet, a vapor outlet, and a converting component with a plurality of orifices and dividing an interior of the casing into a coolant chamber and a vaporization chamber. A liquid coolant is ejected through the plurality of orifices to form plumes toward the interior surface of the thermal-transmittance wall and exchange heat with the thermal-transmittance wall resulting in coolant vapor. In a cooling system, a vapor conduit then carries the vapor to a condenser, and a coolant conduit returns the condensed coolant to the cooling module. The cooling system is used to cool a lamp device.

Abstract: A brushless fan motor control circuit assembly consists of a high-frequency filter circuit, a rectifier circuit, a power factor enhancing circuit, a current-limit and voltage regulation circuit and a brushless fan motor driving circuit. By means of the high-frequency filter circuit to suppress high frequency noises, the power factor enhancing circuit to enhance the power factor and to save power consumption, the current-limit and voltage regulation circuit to limit the current and to achieve overload protection, the brushless fan motor control circuit assembly controls the operation of a motor of an electric accurately and safely, avoiding fan vibration.

Abstract: A brushless fan motor control circuit assembly consists of a high-frequency filter circuit, a rectifier circuit, a power factor enhancing circuit, a current-limit and voltage regulation circuit and a brushless fan motor driving circuit. By means of the high-frequency filter circuit to suppress high frequency noises, the power factor enhancing circuit to enhance the power factor and to save power consumption, the current-limit and voltage regulation circuit to limit the current and to achieve overload protection, the brushless fan motor control circuit assembly controls the operation of a motor of an electric accurately and safely, avoiding fan vibration.

Abstract: A lamp device includes a lamp housing, a light emitting component serving as a heat source and a cooling system. The cooling system includes a liquid coolant, a cooling module, a vapor conduit, a coolant conduit, and a condenser. The cooling module includes a casing and a converting component. The casing has a thermal-transmittance wall having an interior surface and an exterior surface, a coolant inlet and a vapor outlet. The converting component divides an interior of the casing into a coolant chamber and a vaporization chamber. The converting component is formed with a plurality of orifices for permitting the liquid coolant in the coolant chamber to be ejected therethrough to form plumes of the liquid coolant that travel toward the interior surface of the thermal-transmittance wall and that exchange heat with the thermal-transmittance wall to result in coolant vapor flowing out of the vaporization chamber via the vapor outlet.

Abstract: A heat dissipation system includes a cooling device, a condenser, a vapor conveying duct and a cooling liquid conveying duct. The cooling device includes a housing, and an orifice plate dividing an inner space of the housing into a liquid supply chamber and an evaporation chamber proximate to the heat source, and formed with multiple micro orifices each having a diameter ranging from 5 to 1000 micrometers. The condenser includes a fluid inlet, a condensing chamber and a fluid outlet. The vapor conveying duct connects a vapor outlet of the housing and the fluid inlet of the condenser. The cooling liquid conveying duct connects a cooling liquid inlet of the housing and a fluid outlet of the condenser.

Abstract: A current transformer type power limit controller is disclosed having a current transformer connected in series to the load. The number of turns of the primary winding and secondary winding of the current transformer are in ones place and thousands place respectively. The current transformer amplifiers voltage signal to charge capacitors through a voltage doubler circuit for the working of a detection and trigger circuit and a relay that switches off the load when the power consumed surpasses the set value (190W). The current transformer type power limit controller further includes a hold circuit, an error correction circuit, and a detection and trigger circuit.

Abstract: An overcurrent breaking controller for a lamp and lantern is connected in series between AC power and a load and mainly comprises a current transformer connected to the AC power, an overcurrent restraint unit connected to the other terminal of current transformer, and a trigger control unit connected to the overcurrent restraint unit. The overcurrent restraint unit further comprises a phase delay unit and a time setting unit and thus may flicker or cut the power to give a warning signal to a user for achievement of energy conservation and for prevention of energy waste.

Abstract: A dual power supply type brushless fan motor speed control device for controlling the speed of the fan motor of a ceiling fan formed of a DC power supply circuit unit, a central processing unit, a medium and high speed power supply control unit, a low-speed power supply control unit, a back electromotive force detection circuit unit and three drive output control circuit units.

Abstract: An overcurrent breaking controller for a lamp and lantern is connected in series between AC power and a load and mainly comprises a current transformer connected to the AC power, an overcurrent restraint unit connected to the other terminal of current transformer, and a trigger control unit connected to the overcurrent restraint unit. The overcurrent restraint unit further comprises a phase delay unit and a time setting unit and thus may flicker or cut the power to give a warning signal to a user for achievement of energy conservation and for prevention of energy waste.

Abstract: An overcurrent controller for a remotely controlled ceiling fan provided with lamps and lantern, one terminal of which is connected to AC power and the other terminal is connected to at least one ceiling fan and at least one lamp and lantern, the controller comprising a power conversion unit, a microprocessor unit, an overcurrent control unit, a wireless signal control unit, a ceiling fan control unit, and a lamp and lantern control unit. Thus, when the current of lamp and lantern exceeds a set current, the output transition of an operation amplifier of the overcurrent control unit may be achieved to trigger the microprocessor unit, the microprocessor unit being thereby provided with an output in 3 modes: 1. Down-regulation mode; 2. Flicker alarm mode; and 3. Power failure mode for achievement of power saving and prevention of energy waste.

Abstract: A method of breaking an overcurrent is provided to connect an overcurrent breaking controller in series between an AC power and a load. Thus, when detecting the connected load of which the current generated with the consumed power is higher than a rated current of the overcurrent breaking controller, the overcurrent breaking controller instantly stops the load working, when detecting the current passing through the load that is lower than the rated current, the controller allowing the load to re-work. Thus, the load of which the rated current exceeds is prevented from being replaced, and automatic power shut and recovery are implemented for protection, power saving, easy installation, and energy waste prevention.

Abstract: A power-saving, high-performance, low-noise brushless motor control circuit assembly is disclosed formed of a power supply circuit, a booster and compensation circuit, a voltage regulator circuit, a microprocessor, a back electromagnetic force sensor, three driver circuits, and three output circuits. By means of detecting back electromagnetic force, the magnetic pole position of the brushless motor is known accurately, ensuring accurate operation control. By means of providing a high voltage to drive the drive circuits, the field effect transistors of the output circuits are operated under full conduction, saving much power consumption and lowering the working temperature of the brushless motor.

Abstract: A fan motor controller comprised of a power supply unit, three driving circuits, three power output circuits, a microprocessor, a voltage raising and compensation circuit, a Back-EMF sensing circuit, a current-limit protection circuit, and a speed control circuit. The fan motor controller eliminates the use of a Hall sensor, enables the field effect power transistor of the works in full conduction of each power output circuit to work in full conduction so as to lower the temperature.

Abstract: A power-saving, high-performance, low-noise brushless motor control circuit assembly is disclosed formed of a power supply circuit, a booster and compensation circuit, a voltage regulator circuit, a microprocessor, a back electromagnetic force sensor, three driver circuits, and three output circuits. By means of detecting back electromagnetic force, the magnetic pole position of the brushless motor is known accurately, ensuring accurate operation control. By means of providing a high voltage to drive the drive circuits, the field effect transistors of the output circuits are operated under full conduction, saving much power consumption and lowering the working temperature of the brushless motor.

Abstract: A fan motor controller comprised of a power supply unit, three driving circuits., three power output circuits, a microprocessor, a voltage raising and compensation circuit, a Back-EMF sensing circuit, a current-limit protection circuit, and a speed control circuit. The fan motor controller eliminates the use of a Hall sensor, enables the field effect power transistor of the works in full conduction of each power output circuit to work in full conduction so as to lower the temperature.

Abstract: An electronic ballast formed of a rectifier circuit, a high-frequency voltage generator, a cross-linking circuit, a triggering circuit, a high-frequency oscillator and a choke coil is disclosed to limit the electric current upon starting of the electronic ballast so as to prevent damage to the lamp tube, and to isolate the power supply from the lamp tube before generation of a high-frequency voltage so that only the high-frequency power supply is provided to the lamp tube to prevent burning of the oscillation power transistor.