Abstract: An inverter control circuit is used to control a switch and a transformer in front of a light-emitting unit and then adjust the driving power for the light-emitting unit and modify the luminant state of the light-emitting unit and comprises: a first control unit and a second control unit both having equivalent electronic elements. The first control unit and the second control unit have a signal generator and a signal synthesizer circuit. According to a signal fed back by the light-emitting unit and a dimming signal, the first signal generator outputs first working signals via the signal synthesizer circuit of the first control unit to determine the turn-on time of the switch. According to the first working signals and via the signal synthesizer circuit of the second control unit, the second signal generator outputs second working signals to the switch to determine the resonance frequency of the transformer.

Abstract: A driving circuit for hot cathode fluorescent lamps aims to filter out signals with a voltage value lower than a duty voltage value of a switch unit through a commutation unit and a valley filled power correction circuit to prevent power from accumulating and the switch unit from being pierced.

Abstract: A LED driving circuit mainly includes a commutation unit to transform an AC input cycle signal to a DC cycle signal, a switch unit which divides a driving power signal output to a LED and has a duty voltage value, a valley filled power factor correction circuit to receive the AC input cycle signal and stop conduction of the commutation unit when the voltage value of the AC input cycle signal is lower than a cutoff voltage value, and a piezoelectric inverter to receive the driving power signal of the switch unit and regulate the signal to an AC modulated power signal within a duty range of the LED to drive the LED to emit light.

Abstract: An inverter control circuit with a resonant frequency modulation function provides a control circuit module that can modulate different resonant frequencies externally to fit loads of different modes without changing the inverter components such as a voltage transformer or redesigning the circuit layout. The RC oscillation circuit of a resonant frequency controller of the invention includes several separate resistors, and the separate resistors of the RC oscillation circuit are coupled to at least one switcher to form an open circuit or a closed circuit to determine the total resistance of the RC oscillation circuit for modulating different resonant frequencies.

Abstract: A control method for pre-warning an aging electric discharge lamp includes the steps of determining a performance parameter of an electric discharge lamp, inputting the performance parameter into an arithmetic logic unit as a standard value of the electric discharge lamp, using a detector to detect an operating performance parameter of the electric discharge lamp, and comparing a performance parameter with the operating performance parameter by the arithmetic logic unit, and if the operating performance parameter matches an aging state of the performance parameter set in the arithmetic logic unit, then the arithmetic logic unit will output an aging signal of the electric discharge lamp as a warning, and thus users can change the aging electric discharge lamp before the electric discharge lamp breaks down.

Abstract: A driver protection circuit for a push-pull type discharge lamp comprises a discharge lamp with two input electrodes, a driver circuit having two transformer units and two driver units, and a protection mechanism. Two transformer units are respectively connected to the two input electrodes and provide an opposite-phase push-pull type driving power. The front ends of the transformer units are respectively connected to the driver units which are parallel connected to a power source. The combination of the driver unit, the transformer unit, and the input electrode is defined to be a high voltage output section. The protection mechanism has two protection units respectively assigned to the high voltage output sections and can receive an abnormal signal of the corresponding high voltage output section and synchronically transmits the abnormal signal to two driver units and makes the driver circuit simultaneously stop or pause outputting power to the two input electrodes.

Abstract: An inverter for boosting rotational image displaying gain has a driving module to output a plurality of driving signals of the same frequency and same phase to synchronously drive a plurality of voltage transformation modules. The driving signals have a duty cycle consisting high luminance cycles and low luminance cycles. The driving module has a time sequence control means to code the driving signals that drive the voltage transformation modules as the high luminance cycles corresponding to the image display time of a front end display panel. The transformation time difference between the preceding image and the following image of the display panel is coded as the low luminance cycles. Thereby the rotational image displaying gain of the display panel can be enhanced.

Abstract: A backlight module actuation method aims to modulate a unsaturated luminance cycle in a dimming cycle for a backlight module in the condition of a saturated luminance. An oscillation amplitude time series of the duty cycle of a transformer at the rear end is set according to the dimming cycle to form a switch kinetic energy in the unsaturated luminance cycle. The switch kinetic energy can eliminate the parasite capacitance generated when the backlight module is in the condition of the saturated luminance.

Abstract: A piezoelectric ignition circuit for lighting fixtures adopted for use on lighting fixtures such as fluorescent lamps, lighting bulbs, neon lights and the like to replace the winding coil transformer and electronic stabilizer used in the conventional lighting fixtures to overcome the occurred shortcomings such as a shorter life span, bulky size, higher cost and temperature, and lower luminance. The invention employs a piezoelectric transformer which can rapidly boost voltage to achieve benefits of a longer life span, smaller size, lower cost and temperature, and greater luminance.