CN2371763Y

CN2371763Y - Electronic ballast for high-voltage Na lamp

Info

Publication number: CN2371763Y
Application number: CN 99222709
Authority: CN
Inventors: 姜兆国; 李桂
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-01
Filing date: 1999-02-01
Publication date: 2000-03-29
Anticipated expiration: 2009-02-01

Abstract

The utility model relates to an electronic ballast for high-voltage Na lamps. The utility model has the main technical proposal that an installing board is arranged in a ballast outer shell; a printed circuit board and a radiator are arranged on the installing board; inlet and outlet wire connecting terminals are arranged on the ballast outer shell; a rectifying filter circuit, a direct coupling power oscillator part and a high-frequency ballast output part are arranged on the printed circuit board. The utility model has the advantages of low power consumption, and high power factor (the highest can reach 0.983); the electric power required by a lamp bulb is reduced by 29 percents under the same brightness. A great amount of nonferrous metal copper and silicon steel can be saved.

Description

Electronic ballast of high voltage sodium lamp

The utility model relates to illuminator, and is particularly relevant with employed ballast in the illuminator.

High-pressure sodium lamp is a kind of bulb that adopts high-pressure sodium vapour discharge, and it has the luminous efficiency height, and power consumption is low and penetrate advantages such as the smog ability is strong.But the Inductive ballast power consumption of existing high-pressure sodium lamp configuration is high, and it needs to absorb certain reactive power in the extra electrical network, and power factor is generally about 0.38, and this has promptly increased power consumption, has reduced the economy of operation again.

The purpose of this utility model provide a kind of power consumption low, with the few electronic ballast of high voltage sodium lamp of material.

Main technical schemes of the present utility model is; Inside at the ballast shell has mounting panel, on mounting panel, have printed circuit board (PCB) and radiator, on the ballast shell, have turnover line binding post, on printed circuit board (PCB), have current rectifying and wave filtering circuit, straight coupling power oscillator part, high frequency ballast output.

It is as follows that the utility model is compared its advantage with prior art.

1, power consumption is low, and the needed electrical power of bulb reduces by 29% under identical brightness;

2, power factor height (reaching as high as 0.983);

3, can save a large amount of non-ferrous metal coppers and silicon steel.

Concrete structure of the present utility model is provided by the following drawings;

Fig. 1 is a general structure cutaway view of the present utility model.

Fig. 2 is a schematic diagram of the present utility model.

Below in conjunction with accompanying drawing the example of executing of the present utility model is further described.

As Fig. 1, shown in, has mounting panel 2 in the inside of ballast shell 1, on mounting panel 2, have printed circuit board (PCB) 4 and radiator 6, on ballast shell 1, have turnover line binding post 3, on printed circuit board (PCB) 4, have current rectifying and wave filtering circuit 5, straight coupling power oscillator part 7, high frequency ballast output 8.Principle of the present utility model as shown in Figure 2, D1～D4 is a full-wave bridge rectifier circuit, it converts the 50HZ industrial frequency AC to direct current, L1, L2, C1 form filter circuit, be used to absorb the impulse disturbances group that supply line occurs, exempt adverse effect, stop high frequency and harmonic wave to deliver to supply line simultaneously this equipment, pollute power supply, T1～T4 forms straight coupling power amplifier, works in Class C, and forms power oscillator with O type high frequency transformer BO, NG is a high-pressure sodium lamp, and L is a high frequency ballast.The moment of power connection, C4 is charged to D6 avalanche breakdown, and T3, T4 obtain initial current, the N1 induced current in high frequency transformer BO, make T3, T4 conducting, after the BO magnetic saturation, the N1 induced current is reverse, force T3, T4 to end, the N2 induced current makes T2, T3 conducting simultaneously, goes round and begins again.At the K of BO end output high-frequency current, the operating current of inductance L decision sodium vapor lamp, C6 is a capacitance, forms series resonant circuit with L simultaneously, with the sodium vapor lamp that ignites.

Claims

1, a kind of electronic ballast of high voltage sodium lamp, it is by ballast shell (1), mounting panel (2), printed circuit board (PCB) (4), radiator (6) and turnover line binding post (3), it is characterized in that: have mounting panel (2) in the inside of ballast shell (1), on mounting panel (2), have printed circuit board (PCB) (4) and radiator (6), on ballast shell (1), have turnover line binding post (3).

2, according to right 1 described electronic ballast of high voltage sodium lamp, it is characterized in that: on printed circuit board (PCB) (4), have current rectifying and wave filtering circuit (5), straight coupling power oscillator part (7), high frequency ballast output (8).