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 rectification circuit, an inversion converter and an output end, the energy-saving ballast with the power correction function also 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 end and the AC-DC conversion circuit, the power correction circuit is connected between the AC-DC conversion circuit and the filter rectification circuit, and the short-circuit protection circuit is arranged in the inversion converter. Two energy-saving ballasts with the power correction functions are arranged in the same energy-saving ballast module with the power correction function and are controlled by an energy-saving ballast control circuit with the power correction function and connected with the energy-saving ballast module, so that the functions of switch-on, switch-off and cross exchange of the two energy-saving ballasts with the power correction functions are achieved; and by the device, instantaneous spike pulse or strong lightening interference also can be withstood, the surge current is effectively suppressed, and the energy-saving ballast has the functions of multi-load output and delay starting, and the service lifetime of a lamp is prolonged.

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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