A ELECTRONIC BALLAST TO HAVE THE DIMMING-FUNCTION AND ITS USAGE METHOD

摘要

An electronic ballast and dimming method can illuminate neighboring to the uniform brightness by controlling the switching operation of the inverter unit with the current controller. The current detector(28) removes all kinds of the noises and the noise signal generating during the process of converting the general commerce voltage into the high pressure from the line connecting the electric wave rectifying section and inverter unit. The pure current value is detected. The voltage detecting portion(27) is connected in parallel with the current detector. The detected information is input to the microprocessor(29) from the voltage detecting portion and current detector. When the detected information is deficient in the standard value or the information exceeds, the microprocessor acquires the correction value to apply the current controller.