Energy-saving ballast with power correction function

Abstract

The invention discloses an energy-saving ballast with a power correction function. The energy-saving ballast comprises an AC-DC conversion circuit, a filter rectifier circuit, a reverse converter andan output end, and the energy-saving ballast with the power correction function further comprises an electromagnetic filter circuit, a power correction circuit and a short-circuit protection device, the electromagnetic filter circuit is connected between a voltage input terminal and the AC-DC conversion circuit, the power correction circuit is connected between the AC-DC conversion circuit and thefilter rectifier circuit, and the short-circuit protection circuit is placed in the reverse converter. Two energy-saving ballasts with the power correction function are arranged in an energy-saving ballast module with a power correction function and are controlled by the energy-saving ballast control circuit with the power correction function connected with thereto so as to achieve the function of starting, closing and cross switching of the two energy-saving ballasts with a power correction function, and the device can resist transient spikes or strong lightning interference to effectively suppress the surge current, and has functions of multi-load output, delay starting and prolonging of the service life of a lamp.

Description

technical field [0001] The invention relates to an energy-saving ballast with power correction function, in particular to an energy-saving ballast with power correction function for fluorescent lamps. Background technique [0002] In the current lighting industry, the existing general-purpose energy-saving ballasts with power correction function are composed of electrical components such as power capacitors, normally closed thermal switches, and thermal resistance coils. This energy-saving ballast with power correction functions There is strong vibration noise and temperature rise, and there is light flickering. When the power is turned on, the lamps cannot be lit quickly. At the same time, due to the unstable mains voltage, energy-saving ballasts and lamps with power correction functions are easy to burn out. , causing losses to users. [0003] At present, fluorescent lamps are widely used because of their energy saving and good luminescence, and energy-saving ballasts wit...

AI Technical Summary

Problems solved by technology

Ring tube fluorescent lamps are generally spliced ​​by several sections of fluorescent tubes, and the existing energy-saving ballasts with power correction function are difficult to realize the conversion and control between multiple tubes

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