CN201781673U

CN201781673U - Multi-way output circuit of electrodeless lamp electronic ballast

Info

Publication number: CN201781673U
Application number: CN2010205011495U
Authority: CN
Inventors: 陈德宪
Original assignee: ENPING CITY HAOYOULIANG OPTOELECTRONICS Co Ltd
Current assignee: ENPING CITY HAOYOULIANG OPTOELECTRONICS Co Ltd
Priority date: 2010-08-23
Filing date: 2010-08-23
Publication date: 2011-03-30
Anticipated expiration: 2020-08-23

Abstract

The utility model discloses a multi-way output circuit of an electrodeless lamp electronic ballast, which comprises a filter circuit, a rectification circuit, a power factor correction circuit, oscillation and power amplification circuits and resonance circuits, wherein the input end of the filter circuit is connected with an AC supply, the output end of the filter circuit is connected with the input end of the rectification circuit, the input end of the rectification circuit is connected with the power factor correction circuit, the output end of the power factor correction circuit is connected with the input ends of a plurality of oscillation and power amplification circuits, and the output ends of the oscillation and power amplification circuits are connected with the input ends of a plurality of resonance circuits. The collocated output circuit satisfies the hanging of two or more than two electrodeless lamps and can be directly applied in the site requiring double-lamp or multi-lamp lighting; a group of multi-way output circuits of electronic ballast can meet the power supply demands of a plurality of electrodeless lamps, thereby avoiding the problems of waste and overlarge occupied space brought by the application of a plurality of electronic ballasts, and saving the cost.

Description

The multiplex output circuit of electrodeless lamp electronic ballast

Technical field

The utility model relates to the multiplex output circuit of a kind of power supply circuits of electrodeless lamp, particularly a kind of electrodeless lamp electronic ballast.

Background technology

Under some occasion, in order to increase intensity of illumination, need use two lamps or many lamps throws light on, but existing electrodeless lamp electronic ballast is subject to its inner circuit structure, an electric ballast can only promote an electrodeless lamp fluorescent tube, therefore in order to make said lighting system working properly, being necessary for every lamp all disposes electric ballast respectively and drives, this configuration mode can cause huge waste, and can take a large amount of installing spaces, and above-mentioned shortcoming can be more outstanding along with the increase of electrodeless lamp quantity.

Summary of the invention

For addressing the above problem, the utility model provides a kind of multiplex output circuit of electrodeless lamp electronic ballast, utilizes this output circuit can articulate many electrodeless lamps, is particularly suitable for being applied to the situation of two lamps or the common illumination of many lamps.

The utility model is that the technical scheme that its problem of solution is adopted is:

The multiplex output circuit of electrodeless lamp electronic ballast, comprise filter circuit, rectification circuit, circuit of power factor correction, vibration and power amplification circuit and resonant circuit, the input of described filter circuit is connected with AC power, the output of filter circuit is connected with the input of rectification circuit, the output of rectification circuit is connected with circuit of power factor correction, the output of circuit of power factor correction is connected with the input of several vibrations and power amplification circuit, and the output of each vibration and power amplification circuit links to each other with the input of some resonant circuits.

As wherein preferred embodiment a kind of, the quantity of described vibration and power amplification circuit is one, and the output of vibration and power amplification circuit links to each other with the input of two or more resonant circuits.

As another preferred embodiment, the quantity of described vibration and power amplification circuit is two or more, and the output of each vibration and power amplification circuit links to each other with the input of a resonant circuit.

From annexation of the present utility model as can be seen, the quantity of its resonant circuit is not limited to one, can be by configuration so that the quantity of resonant circuit is made as two or more, because electrodeless lamp is mounted on this resonant circuit, therefore output circuit of the present utility model can satisfy articulating of two or more electrodeless lamps after disposing, it can directly apply to two lamps or the many lamps occasion of photograph altogether, utilize one group of electric ballast multiplex output circuit to solve the power demands of a plurality of electrodeless lamps, thereby remove the waste that brings when a plurality of electric ballasts are used from and take the excessive problem of installing space, more save cost.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is the block diagram of system of the present utility model;

Fig. 2 is the composition frame chart of a kind of preferred embodiment of the utility model;

Fig. 3 is the composition frame chart of the another kind of preferred embodiment of the utility model;

Fig. 4 is the circuit theory diagrams of a kind of embodiment of filter circuit;

Fig. 5 is the circuit theory diagrams of rectification circuit and a kind of embodiment of circuit of power factor correction;

Fig. 6 is the circuit theory diagrams of vibration and power amplification circuit and a kind of embodiment of resonant circuit;

Fig. 7 is the circuit theory diagrams of vibration and power amplification circuit and the another kind of embodiment of resonant circuit.

Embodiment

With reference to Fig. 1, the multiplex output circuit of electrodeless lamp electronic ballast of the present utility model, comprise filter circuit 1, rectification circuit 2, circuit of power factor correction 3, vibration and power amplification circuit 4 and resonant circuit 5, the input of described filter circuit 1 is connected with AC power, the output of filter circuit 1 is connected with the input of rectification circuit 2, the output of rectification circuit 2 is connected with circuit of power factor correction 3, the output of circuit of power factor correction 3 is connected with the input of several vibrations and power amplification circuit 4, and the output of each vibration and power amplification circuit 4 links to each other with the input of some resonant circuits 5.Above-mentioned filter circuit 1, rectification circuit 2, circuit of power factor correction 3, vibration and power amplification circuit 4, resonant circuit 5 are arranged in the single electric ballast during practical application, and this electric ballast is provided with the output that is connected with electrodeless lamp lamp socket of respective numbers according to the quantity of the resonant circuit 5 of inside.A plurality of electrodeless lamps can be installed on respectively on the above-mentioned electrodeless lamp lamp socket when the utility model was used, these electrodeless lamps are lighted simultaneously, are extinguished simultaneously, be suitable for two lamps or the many lamps applications of photograph altogether, can improve illuminating effect widely, and can reduce effectively the waste and installation take up room.

Fig. 4 is the circuit theory diagrams of a kind of embodiment of filter circuit; this filter circuit is serially connected with between external ac power source and the circuit of power factor correction; be used to eliminate of the influence of the unclean ripple of external communication input on the one hand to electrodeless lamp power supply; when being used to reduce electrodeless lamp work on the other hand to the influence of electrical network; in addition; it generally also is provided with fuse FU1, and fuse disconnects when operating current is excessive, plays overcurrent protection.Fig. 5 is the circuit theory diagrams of rectification circuit and a kind of embodiment of circuit of power factor correction, rectification circuit 2(D1-D4) effect is the alternating voltage of filter circuit output is converted to direct voltage, the effect of circuit of power factor correction 3 is that the unstable voltage transitions with rectification circuit 2 outputs is stable VD, and make power factor maintain level near 0.99, guarantee that system's power supply reaches optimum performance and efficient, using model in this circuit of power factor correction 3 is the special power factor correcting chip (IC1) of MC33262.The how electrodeless lamp that is set to of above-mentioned filter circuit, rectification circuit and circuit of power factor correction articulates reliable guarantee is provided.Fig. 6 is the circuit theory diagrams of vibration and power amplification circuit and a kind of embodiment of resonant circuit, Fig. 7 is the circuit theory diagrams of another kind of embodiment, wherein the circuit among Fig. 6 is fit to high frequency load use, circuit among Fig. 7 is fit to the low frequency load to be used, and the vibration of embodiment and the output of power amplification circuit 4 can be connected with the input of a plurality of resonant circuits 5 as required among Fig. 6 and Fig. 7 two figure.

When considering practical application, distance between electrodeless lamp and the electric ballast may alter a great deal, when distance is far away, it is very big that line impedance can become, because line frequency height, easily heating, therefore can be to the parameter generating in the circuit bigger influence, thereby further influence the operate as normal of electrodeless lamp.At above situation, the utility model is provided with following two kinds of preferred execution modes that connect according to the distance between electrodeless lamp and the electric ballast different:

1, as shown in Figure 2, when the distance between electrodeless lamp and the electric ballast is no more than 50cm, the quantity of vibration and power amplification circuit 4 is set to one, the output of vibration and power amplification circuit 4 links to each other with the input of two or more resonant circuits 5, it is the end that two or more resonant circuits 5 are mounted on vibration and power amplification circuit 4 simultaneously, the quantity of resonant circuit 5 is provided with as required, because distance is shorter, the circuit heating is also not serious, circuit parameter is basicly stable, and therefore single vibration and power amplification circuit 4 just can satisfy instructions for use;

2, as shown in Figure 3, when the distance between electrodeless lamp and the electric ballast surpasses 50cm, circuit generates heat easily, circuit parameter is a greater impact, therefore single vibration and power amplification circuit 4 no longer satisfies instructions for use, at this moment, the quantity of vibration and power amplification circuit 4 is two or more, the output of each vibration and power amplification circuit 4 links to each other with the input of a resonant circuit 5, the end that is each vibration and power amplification circuit 4 only articulates single resonant circuit 5, when needs increased load capacity, vibration and power amplification circuit 4 and resonant circuit 5 increased simultaneously.

Certainly, can also exist existing distance to surpass 50cm during practical application also has distance to be no more than the situation of 50cm, and above-mentioned in this case two kinds of connected modes can be mixed use, guarantee that the utility model can satisfy all-environment demand.

Claims

1. the multiplex output circuit of electrodeless lamp electronic ballast, it is characterized in that comprising filter circuit (1), rectification circuit (2), circuit of power factor correction (3), vibration and power amplification circuit (4) and resonant circuit (5), the input of described filter circuit (1) is connected with AC power, the output of filter circuit (1) is connected with the input of rectification circuit (2), the output of rectification circuit (2) is connected with circuit of power factor correction (3), the output of circuit of power factor correction (3) is connected with the input of several vibrations and power amplification circuit (4), and the output of each vibration and power amplification circuit (4) links to each other with the input of some resonant circuits (5).

2. the multiplex output circuit of electrodeless lamp electronic ballast according to claim 1, the quantity that it is characterized in that described vibration and power amplification circuit (4) is one, and the output of vibration and power amplification circuit (4) links to each other with the input of two or more resonant circuits (5).

3. the multiplex output circuit of electrodeless lamp electronic ballast according to claim 1, the quantity that it is characterized in that described vibration and power amplification circuit (4) is two or more, and the output of each vibration and power amplification circuit (4) links to each other with the input of a resonant circuit (5).