CN2698014Y

CN2698014Y - Control power source circuit especially for electronic ballast of high-strength gas discharge lamp

Info

Publication number: CN2698014Y
Application number: CN 200420018717
Authority: CN
Inventors: 徐殿国; 刘汉奎; 莫桂林; 宋大雷
Original assignee: XINTONGREN ELECTRONIC TECH CO Ltd QINGDAO
Current assignee: XINTONGREN ELECTRONIC TECH CO Ltd QINGDAO
Priority date: 2004-04-02
Filing date: 2004-04-02
Publication date: 2005-05-04
Anticipated expiration: 2014-04-02

Abstract

The utility model relates to a control power source circuit especially for an electronic ballast of a high-strength gas discharge lamp. More specifically, the utility model relates to the control power source circuit especially for the electronic ballast, comprising a switching transformer (1) and a switching power source circuit (2). The (1) is composed that a primary side winding (L1) and an auxiliary side winding (L2) are coiled together, and the first end and the last end of the (L1) are respectively connected with two output ends of the (2) ; the (1) comprises an auxiliary side winding (L3), a rectifier (3), a capacitance (C1), and a manostat (4). The (L3) is one auxiliary side winding which increases coiling in the (1), and the first end and the last end of the (L3) are respectively connected with the pin 1 end and the pin 2 end of the (3) ; the (C1) is connected in parallel between the pin 3 end and the pin 4 end of the (3) ; the pin 3 of the (3) is connected with one input end of the (4) and is earthed, and the pin 4 of the (3) is connected with another input end of the (4). The utility model can provide one stable D. C. voltage stabilized power supply to an inverting circuit of impulse-width modulation and a protecting circuit in the electronic ballast; the control power source circuit especially for the electronic ballast of the high-strength gas discharge lamp can get the inverting circuit of the impulse-width modulation and the protecting circuit in stable operational status, and the control power source circuit especially for the electronic ballast of the high-strength gas discharge lamp has the advantages of reliable operation, low cost, and low power consumption.

Description

The control power circuit of electronic ballast of high intensity gas discharge lamp special use

Technical field:

The utility model relates to the electronic ballast of high intensity gas discharge lamp circuit, specifically is a kind of control power circuit of electronic ballast of high intensity gas discharge lamp special use.

Background technology:

In electronic ballast of high intensity gas discharge lamp; make pulse-width modulation inverter circuit, protective circuit operate as normal; just must provide stable D.C. regulated power supply; and the DC power supply of the electric ballast of existing two-stage type is drawn from circuit of power factor correction; when circuit of power factor correction is a discontinuous operation or when not working; just can't obtain stable D.C. regulated power supply; make the above-mentioned circuit can't operate as normal like this; and cause ballast to be operated in the labile state; influence the normal use of ballast, light fixture, and make ballast, light fixture fragile.

The utility model content:

The purpose of this utility model provides a kind of control power circuit of electronic ballast of high intensity gas discharge lamp special use.The utility model can solve in the existing electronic ballast of high intensity gas discharge lamp because of circuit of power factor correction (PFC) is a discontinuous operation or when not working, and can't obtain making under the situation of stable D.C. regulated power supply the problem that pulse-width modulation inverter circuit, protective circuit can't operate as normal.The utility model comprises switch transformer 1, switching power circuit 2, switch transformer 1 is to be formed by former limit winding L 1, the 2 common coilings of secondary winding L, the first and last end of former limit winding L 1 connects two outputs of switching power circuit 2 respectively, and it also comprises secondary winding L 3, rectifier 3, capacitor C 1, pressurizer 4; Secondary winding L 3 is secondary windings that increase coiling in switch transformer 1, the first and last end of secondary winding L 3 connects pin 1, pin 2 ends of rectifier 3 respectively, capacitor C 1 is attempted by between the pin 3, pin 4 ends of rectifier 3, the pin 3 of rectifier 3 connects the input and the ground connection of pressurizers 4, and the pin 4 of rectifier 3 connects another input of pressurizers 4.Operation principle: produce continuous alternating current on the former limit winding L 1 during switching power circuit 1 work in switch transformer 2, in the sensed secondary winding L 3 of this alternating current, and obtain a stable D.C. regulated power supply by rectifier 3, capacitor C 1, pressurizer 4.The utility model can provide a stable D.C. regulated power supply for pulse-width modulation inverter circuit, the protective circuit in the electronic ballast of high intensity gas discharge lamp; pulse-width modulation inverter circuit, protective circuit are in the stable operating state, and have that circuit is simple, reliable, cost is low, low in energy consumption, the advantage that do not influence electric ballast efficient.

Description of drawings:

Fig. 1 is an electrical block diagram of the present utility model.

Embodiment:

In conjunction with Fig. 1 present embodiment is described, present embodiment is made up of switch transformer 1, switching power circuit 2, secondary winding L 3, rectifier 3, capacitor C 1, pressurizer 4; Switch transformer 1 is to be formed by former limit winding L 1, the 2 common coilings of secondary winding L, the first and last end of former limit winding L 1 connects two outputs of switching power circuit 2 respectively, secondary winding L 3 is secondary windings that increase coiling in switch transformer 1, the first and last end of secondary winding L 3 connects pin 1, pin 2 ends of rectifier 3 respectively, capacitor C 1 is attempted by between the pin 3, pin 4 ends of rectifier 3, the pin 3 of rectifier 3 connects the input and the ground connection of pressurizers 4, and the pin 4 of rectifier 3 connects another input of pressurizers 4.The number of turn of former limit winding L 1 is selected 57 circles for use, and the number of turn of secondary winding L 2 is selected 5 circles for use, and the number of turn of secondary winding L 3 is selected 5 circles for use.

Claims

1, the control power circuit of electronic ballast of high intensity gas discharge lamp special use, it comprises switch transformer (1), switching power circuit (2), switch transformer (1) is to be formed by former limit winding (L1), the common coiling of secondary winding (L2), the first and last end of former limit winding (L1) connects two outputs of switching power circuit (2) respectively, it is characterized in that it also comprises secondary winding (L3), rectifier (3), electric capacity (C1), pressurizer (4); Secondary winding (L3) is a secondary winding that increases coiling in switch transformer (1), the first and last end of secondary winding (L3) connects pin 1, pin 2 ends of rectifier (3) respectively, electric capacity (C1) is attempted by between the pin 3, pin 4 ends of rectifier (3), the pin 3 of rectifier (3) connects the input and the ground connection of pressurizers (4), and the pin 4 of rectifier (3) connects another input of pressurizers (4).