CN2485913Y

CN2485913Y - Ballast device for multiple tubes

Info

Publication number: CN2485913Y
Application number: CN 01243464
Authority: CN
Inventors: 翁云雷; 许文平; 吴丹
Original assignee: 翁云雷
Priority date: 2001-06-15
Filing date: 2001-06-15
Publication date: 2002-04-10
Anticipated expiration: 2011-06-15

Abstract

The utility model discloses a ballast lighting device which can drive a plurality of lighting tubes, consisting of a full wave rectifier circuit providing high voltage direct current power, a half-bridge drive oscillator and the load of at least one multi-lamp fluorescent lamp; wherein, the output terminal of the full wave rectifier circuit is connected with the input terminal of the half-bridge drive oscillator whose one output terminal is connected with the inductance of the multi-lamp fluorescent lamp and the other output terminal is connected with the filament of the multi-lamp fluorescent lamp.

Description

A kind of ballast lighting device that drives many tubes

The utility model relates to a kind of ballast lighting device, relates in particular to a kind of ballast lighting device that drives many tubes.

At present, it is that ballast and lamp are designed to one that a kind of integrated ballast (electronics) is arranged, and have advantages such as economize on electricity, efficient, long-life, but the internal wiring components and parts is more, and a ballast can only control a tubes, makes that the control circuit wiring is complicated.The public place that particularly needs more fluorescent tube for some, wishing has a kind of ballast, can make lamp and ballast separately, and makes the interior components and parts of lamp few as far as possible, and a ballast can drive many fluorescent lamps.

The purpose of this utility model is to overcome the deficiencies in the prior art, be to provide a kind of lamp and ballast separately, in the lamp components and parts less and can drive can many tubes the ballast lighting device.

The purpose of this utility model is achieved in that the ballast lighting device that design can drive many tubes is made up of the load of the full-wave rectifying circuit that high-voltage DC power supply is provided, half-bridge driven oscillator and at least one multi-lamp system fluorescent lamp; The input of the output termination half-bridge driven oscillator of full-wave rectifying circuit, an output of half-bridge driven oscillator is connected with the inductance of multi-lamp system fluorescent lamp, and an output is connected with the filament of multi-lamp system fluorescent lamp.

Half-bridge driver described in the utility model comprises low-voltage dc power supply, oscillator, driver; Dropping resistor R1 connects positive pole and the negative pole that high voltage direct current positive pole and voltage stabilizing didoe D5 and electrochemical capacitor C2 form low-voltage dc power supply.

Because to take said structure, the utility model to solve the integrated ballast internal wiring of prior art components and parts more, and ballast can only be controlled the shortcoming of a tubes.Use the circuit of a plurality of fluorescent tubes of ballast driven, comprise: the operating frequency of fixed frequency, load output are the forms of an inductance serially connected lamp tubes and electric capacity fluorescent tube in parallel, when inserting the load of varying number, do not influence operating frequency, just influence input power, voltage and the frequency to output do not influence yet simultaneously.

Reaching embodiment in conjunction with the accompanying drawings is further described the utility model:

Fig. 1, be electric connection structure block diagram of the present utility model;

Fig. 2, be the circuit theory diagrams of the utility model embodiment.

Shown in accompanying drawing 1, accompanying drawing 2, the utility model can drive the ballast lighting device of many tubes, comprises the full-wave rectifying circuit 1 that high-voltage DC power supply is provided, the load 3 of half-bridge driven oscillator 2 and at least one multi-lamp system fluorescent lamp.D1 ^-D4 forms full-wave rectifying circuit; D5, R1 ^-R4, C2 ^-C5, IC1, T1 ^-T2 forms the half-bridge driven oscillator; Load is made up of L1, RL, C6.An output terminals A of half-bridge driven oscillator 2 is connected with the inductance L 1 of load 3, and another output B is connected with the filament of load 3, and half-bridge driven oscillator 2 comprises low-voltage dc power supply 21, oscillator 22, driver 23; Low-voltage dc power supply 21 connects the high voltage direct current positive pole by the end of dropping resistor R1, the positive pole that the negative pole of other end connection voltage stabilizing didoe D5 and the positive pole of electrochemical capacitor C2 form low-voltage dc power supply 21 is connected with oscillator 22 positive power source terminals, and the negative pole that the negative pole of the positive pole of voltage stabilizing didoe D5 and electrochemical capacitor C2 is connected high voltage direct current negative pole formation low-voltage dc power supply 21 is connected with the negative power end of oscillator 22.Oscillator 22 connects the end of resonant resistance R2 by 2 pin of integrated circuit (IC) 1, and 3 pin connect the other end of resonant resistance R2 and an end of resonance capacitor C 3, another termination low-voltage direct negative pole of resonant capacitance C3; Serial connection bootstrap capacitor C4 between integrated circuit (IC) 16 pin and 8 pin; Integrated circuit (IC) 17 pin and 5 pin are connected as the reverse input of the opposite output of two phase places of oscillator 22 and two phase places of driver 23.Driver 23 by an end of first grid resistance R 3 as input; The other end connects the grid of the first metal-oxide-semiconductor field effect transistor T1, and an end of second grid resistance R 4 is as another input, and the other end connects the grid of the second metal-oxide-semiconductor field effect transistor T2; The drain electrode of the one MOS field effect T1 connects the high voltage direct current positive supply, and source electrode connects 6 pin of integrated circuit (IC) 1 in the drain electrode of the second metal-oxide-semiconductor field effect transistor T2 and the oscillator 22, and this contact is as an output terminals A of half-bridge driver 2; The source electrode of the second metal-oxide-semiconductor field effect transistor T2 connects the end of dc negative supply and capacitance C5, and the other end of capacitance C5 is another output B of half-bridge driver 2.The load 3 of multi-lamp system fluorescent lamp is connect an end of the filament of fluorescent lamp RL by inductance L 1, the end of another termination C6 of this root filament, and an end of another root filament of another termination of C6, the other end of another root filament inserts the B point, and RL is with C6 and connect afterwards to be connected in series with L1 and form.Such fluorescent lamp RL can in parallelly insert many between the output terminals A of half-bridge driver 2, B.

Claims

1, a kind of ballast lighting device that drives many tubes, it is characterized in that: the load by the full-wave rectifying circuit that high-voltage DC power supply is provided, half-bridge driven oscillator and at least one multi-lamp system fluorescent lamp is formed; The input of the output termination half-bridge driven oscillator of full-wave rectifying circuit, an output of half-bridge driven oscillator is connected with the inductance of multi-lamp system fluorescent lamp, and an output is connected with the filament of multi-lamp system fluorescent lamp.

2, a kind of ballast lighting device that drives many tubes according to claim 1, it is characterized in that: the half-bridge driven oscillator comprises low-voltage dc power supply, oscillator, driver; Dropping resistor R1 connects positive pole and the negative pole that high voltage direct current positive pole and voltage stabilizing didoe D5 and electrochemical capacitor C2 form low-voltage dc power supply; Oscillator connects resonant resistance R2 and resonance capacitor C 3 by integrated circuit (IC) 1, and resonant capacitance C3 connects the low-voltage direct negative pole; Integrated circuit (IC) 1 serial connection bootstrap capacitor C4; Integrated circuit (IC) 17 pin and 5 pin are connected as the reverse input of the opposite output of two phase places of oscillator and two phase places of driver; Driver is made up of a pair of resistance R3, R4, a pair of M0S field effect transistor T1, T2 and capacitance C5; The contact of the source electrode of field effect T1 and integrated circuit (IC) 1 is as an output terminals A of half-bridge driven oscillator; Capacitance C5 one end is connected with the source electrode of T2, and the other end is the output B of half-bridge driven oscillator; The load of multi-lamp system fluorescent lamp is by fluorescent lamp RL and C6 and connect the back and be connected in series with inductance L 1 and form; Such fluorescent lamp RL can in parallelly insert many between the output terminals A of half-bridge driver 2, B.