CN202197446U

CN202197446U - Electrodeless ballast circuit

Info

Publication number: CN202197446U
Application number: CN2011202675785U
Authority: CN
Inventors: 鄭小萍
Original assignee: FOSHAN GELAIFU LOW-CARBON LIGHTING RESEARCH DEVELOPMENT MANUFACTURING Co Ltd
Current assignee: FOSHAN GELAIFU LOW-CARBON LIGHTING RESEARCH DEVELOPMENT MANUFACTURING Co Ltd
Priority date: 2011-07-25
Filing date: 2011-07-25
Publication date: 2012-04-18
Anticipated expiration: 2021-07-25

Abstract

The utility model provides an electrodeless ballast circuit, which comprises a power supply circuit and a ballast circuit. The power supply circuit comprises an electro-magnetic interference (EMI) filter circuit, the other end of the EMI filter circuit is connected with a rectifying circuit, and the other end of the rectifying circuit is connected with an active power factor correction (APFC) circuit. The ballast circuit comprises an inverter circuit and is connected with the power supply circuit, one end of the inverter circuit is connected with an integrated circuit (IC), and the other end of the inverter circuit is used for driving loads. The electrodeless ballast circuit is low in energy consumption and long in service life.

Description

A kind of electroless lamp ballasting device circuit

Technical field

The utility model relates to a kind of circuit that is used for the electroless lamp ballasting device.

Background technology

Stepless lamp system is based on the principle of electromagnetic induction; Make the coupling of the plasma and the circuit magnetic line of force; The a pair of iron core that utilization is enclosed within the fluorescent tube outside forms induced current in fluorescent tube, and the same unlike conventional fluorescent lamps, utilizes electrode that the electric energy of outside is converted into lamp internal work energy needed.The effect of a pair of iron core that is enclosed within fluorescent tube outside is just as the primary coil of transformer, and the effect of closed fluorescent tube is just as the secondary coil of transformer.Electric ballast can be installed separately with fluorescent tube as required, and distance is a 0-20 rice.After energized, electric ballast can produce the alternating current of 140KHZ-260KHZ operating frequency, thereby produces AC magnetic field at region of discharge.According to Faraday's electromagnetic induction law, the magnetic field of variation can produce induced current in fluorescent tube, thereby makes the mixed vapour of low-pressure mercury and inert gas produce discharge, gives off the ultraviolet ray of 253.7nm, is converted into visible light through fluorescent material again.

Electrodeless lamp is applicable to the place of changing lamp difficulty and expensive; And the important place high to safety requirements, decorate or the like like tunnel, traffic complex area, subway station, factory building, the illumination of dangerous region, hall, gymnasium, sports ground, museum, urban architecture that ceiling is very high.But because existing electrodeless lamp because filament and fluorescent tube are the rapid wear assembly, therefore is prone to the generation energy consumption, and the life-span is short.

The utility model content

The purpose of the utility model is to provide the electroless lamp ballasting device circuit that a kind of energy consumption is low, the life-span is long.

For achieving the above object; A kind of electroless lamp ballasting device circuit that the utility model provides; Comprise power circuit and ballasting circuit; Wherein said power circuit comprises the EMI filter circuit of external power supply, and the said EMI filter circuit other end connects rectification circuit, and the other end of said rectification circuit connects the APFC circuit of power factor correction;

Said ballasting circuit comprises that inverter circuit is connected with said power circuit, and an end of said inverter circuit is connected with an IC circuit, and the said inverter circuit other end is used to drive load.

In technique scheme, the utility model carries out power samples, control signal through using inverter circuit through IC; Produce high-frequency AC as the gas in the energy excitation fluorescent tube of coupling coil, avalanche ionization forms gas ions; Excited atom spontaneous radiation when upper state returns lower state goes out ultraviolet ray in the plasma, and the fluorescent material of ultraviolet ray excited tube inner wall sends visible light.Because the utility model is high because of power factor, electric current is little, directly reduced the initial outlay cost of controller switching equipment and transmission line, so the life-span is long, and maintenance cost is low.

Description of drawings

Accompanying drawing 1 is the circuit block diagram of the utility model ballast.

Embodiment

To combine accompanying drawing to describe the applied embodiment of the utility model below.

See also accompanying drawing 1; A kind of electroless lamp ballasting device circuit that the utility model provides; Comprise power circuit and ballasting circuit; Wherein said power circuit comprises the EMI filter circuit 1 of external power supply, and said EMI filter circuit 1 other end connects rectification circuit 2, and the other end of said rectification circuit 2 connects APF

C circuit of power factor correction 3; Said ballasting circuit comprises that inverter circuit 4 is connected with said power circuit, and an end of said inverter circuit 4 is connected with an IC circuit 6, and said inverter circuit 4 other ends are used to drive load 5.

The operation principle of this circuit, power circuit at first, low frequency AC (promptly inserting the 220V alternating current), EMI filter circuit adopt two II type filter circuits, are used for the filtering clutter; Rectification circuit converts the AC of filtering clutter to DC (direct current) through bridge rectifier then; Rise to 400V then through APFC (Active Power Factor Correction, APFC) circuit of power factor correction correcting power factors and filtering once more, and with voltage.

Ballasting circuit, the mode through electromagnetic induction and coupling is connected with power circuit; Wherein inverter circuit uses two MOSFET pipe half-bridge inversion circuits, carries out power samples through IC, and control signal provides protection.Produce then and stablize pure high frequency 250kHz AC as the gas in the energy excitation fluorescent tube of coupling coil, avalanche ionization forms gas ions.Excited atom spontaneous radiation when upper state returns lower state goes out ultraviolet ray in the plasma, and the fluorescent material of ultraviolet ray excited tube inner wall sends visible light.

The utility model circuit does not have filament and electrode by what, and because of power factor is high, electric current is little, can directly reduce the initial outlay cost of controller switching equipment and transmission line; And the life-span is long, and maintenance cost is low.

Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.The modification of being done within any spirit and principle at the utility model, be equal to replacement and improvement etc., all should be included within the claim protection range of the utility model.

Claims

1. electroless lamp ballasting device circuit; It is characterized in that: comprise power circuit and ballasting circuit; Wherein said power circuit comprises the EMI filter circuit of external power supply; The said EMI filter circuit other end connects rectification circuit, and the other end of said rectification circuit connects APFC (Active Power Factor Correction, APFC) circuit of power factor correction;