CN202841664U

CN202841664U - Electronic ballast circuit used for energy saving lamp

Info

Publication number: CN202841664U
Application number: CN 201220444486
Authority: CN
Inventors: 朱晓峰
Original assignee: ANHUI MINGWEI ILLUMINATION EQUIPMENT Co Ltd
Current assignee: ANHUI MINGWEI ILLUMINATION EQUIPMENT Co Ltd
Priority date: 2012-09-03
Filing date: 2012-09-03
Publication date: 2013-03-27
Anticipated expiration: 2022-09-03

Abstract

The utility model discloses an electronic ballast circuit used for an energy-saving lamp. The electronic ballast circuit used for the energy-saving lamp includes a rectifying circuit, a switching circuit and a resonance circuit. Alternating current of 220V AC is rectified through the bridge-type rectifying circuit composed of a diode D1, a diode D2, a diode D3 and a diode D4 and filtered through a capacitor C2 and is turned to direct current. The direct current flows through the 30 KHz-40 KHz high frequency switching circuit composed of a T1, a T2, an R3, an R4, an R5, an R6 and a magnet ring transformer, a resonance circuit is composed of an inductor L2 and a C5 and a starting circuit composed of a resistor R1, R2 and D7 and used for starting the switching circuit. When amplitude achieves a tube breakdown value, a tube starts to give out light. After the tube is started, the inductor L works as a choke element to control the volume of tube current, thereby stabilizing the working of the whole electronic ballast circuit. The electronic ballast circuit provided by the utility model is simple in principle, stable in tube current, reasonable in arrangement and easy to produce. When the starting circuit of the ballast circuit used for the energy-saving lamp is working, a tube filament can be preheated, so that a condition that the tube turns black caused by high-voltage sputtering of the filament is prevented effectively and the service lifetime of the tube is prolonged.

Description

The circuit of electronic ballast that is used for electricity-saving lamp

Technical field

This practical CFL lighting field that relates to is specially a kind of circuit of electronic ballast for electricity-saving lamp.

Background technology

Electricity-saving lamp is a kind of of household, commercial general lighting, in the whole nation so ball all have a wide range of applications, it reaches more than 30% than traditional incandescent lamp is energy-conservation, and also before the prematurity, the CFL lighting technology also has the quite long market share in industry in following lighting technology.

The utility model content

This practical purpose provides a kind of circuit of electronic ballast for electricity-saving lamp, to reach the luminous effect of power saving fluorescent lamps starter.

For achieving the above object, this practical scheme of technology of taking is:

A kind of circuit of electronic ballast for electricity-saving lamp, it is characterized in that: include rectification circuit, filter capacitor, start-up circuit, switching circuit, resonant circuit, described rectification circuit is the bridge rectifier that diode D1-D4 consists of, rectification circuit is in parallel with filter capacitor C1, start-up circuit includes the resistance R 1 of mutual series connection, resistance R 2, diode D7, filter capacitor C1 and the resistance R 1 of mutually connecting, resistance R 2, diode D7 is in parallel, described switching circuit includes the triode VT1 of mutual series connection, resistance R 3, triode VT2, resistance R 4, resistance R 2 is connected with the base stage of triode VT2 with Nodes between the diode D7, the base stage contact resistance R5 of triode VT1, the other end of resistance R 5 connects the end of the coil Tn1 of magnetic ring transformer T, between the collector electrode and resistance R 3 of the other end access triode VT2 of coil Tn1, the resistance R 5 of series connection, coil Tn1 is also in parallel with diode D6, the base stage contact resistance R6 of triode VT2, the other end of resistance R 6 connects the end of the coil Tn2 of magnetic ring transformer T, the other end of coil Tn2 is connected with the other end of resistance R 4, described resonant circuit includes inductance L, capacitor C 5, the end connecting coil Tn1 of the coil Tn3 of magnetic ring transformer T, one end connects inductance L, inductance L access fluorescent tube LAMP, the other end of fluorescent tube LAMP is by the collector electrode of capacitor C 4 access triode VT1, the two ends of fluorescent tube LAMP are parallel with capacitor C 5, civil power access rectification circuit, filter capacitor C1 is through rectification, become direct current after the filtering, again through resistance R 1, R2, the start-up circuit that D7 forms, start-up circuit starts VT1, VT2, R3, R4, R5, R6, the switching circuit that magnetic ring transformer T forms, inductance L, C5 forms resonant circuit by tube filament, when amplitude reached the value that punctures fluorescent tube, tube starting was luminous.

The utility model has the advantages that:

The utility model circuit theory is simple, and lamp current is stable, arranges rationally, is easy to produce, and during start-up circuit work of the present utility model, can to the tube filament preheating, prevent that effectively filament from bringing fluorescent tube blackout, prolonging service life of lamp tube through high pressure spray.

Description of drawings

Fig. 1 is electrical schematic diagram of the present utility model.

Embodiment

As shown in Figure 1: a kind of circuit of electronic ballast for electricity-saving lamp, it is characterized in that: include rectification circuit, filter capacitor, start-up circuit, switching circuit, resonant circuit, described rectification circuit is the bridge rectifier that diode D1-D4 consists of, rectification circuit is in parallel with filter capacitor C1, start-up circuit includes the resistance R 1 of mutual series connection, resistance R 2, diode D7, filter capacitor C1 and the resistance R 1 of mutually connecting, resistance R 2, diode D7 is in parallel, described switching circuit includes the triode VT1 of mutual series connection, resistance R 3, triode VT2, resistance R 4, resistance R 2 is connected with the base stage of triode VT2 with Nodes between the diode D7, the base stage contact resistance R5 of triode VT1, the other end of resistance R 5 connects the end of the coil Tn1 of magnetic ring transformer T, between the collector electrode and resistance R 3 of the other end access triode VT2 of coil Tn1, the resistance R 5 of series connection, coil Tn1 is also in parallel with diode D6, the base stage contact resistance R6 of triode VT2, the other end of resistance R 6 connects the end of the coil Tn2 of magnetic ring transformer T, the other end of coil Tn2 is connected with the other end of resistance R 4, described resonant circuit includes inductance L, capacitor C 5, the end connecting coil Tn1 of the coil Tn3 of magnetic ring transformer T, one end connects inductance L, inductance L access fluorescent tube LAMP, the other end of fluorescent tube LAMP is by the collector electrode of capacitor C 4 access triode VT1, the two ends of fluorescent tube LAMP are parallel with capacitor C 5, civil power access rectification circuit, filter capacitor C1 is through rectification, become direct current after the filtering, again through resistance R 1, R2, the start-up circuit that D7 forms, start-up circuit starts VT1, VT2, R3, R4, R5, R6, the switching circuit that magnetic ring transformer T forms, inductance L, C5 forms resonant circuit by tube filament, when amplitude reached the value that punctures fluorescent tube, tube starting was luminous.

Claims

1. circuit of electronic ballast that is used for electricity-saving lamp, it is characterized in that: include rectification circuit, filter capacitor, start-up circuit, switching circuit, resonant circuit, described rectification circuit is the bridge rectifier that diode D1-D4 consists of, rectification circuit is in parallel with filter capacitor C1, start-up circuit includes the resistance R 1 of mutual series connection, resistance R 2, diode D7, filter capacitor C1 and the resistance R 1 of mutually connecting, resistance R 2, diode D7 is in parallel, described switching circuit includes the triode VT1 of mutual series connection, resistance R 3, triode VT2, resistance R 4, resistance R 2 is connected with the base stage of triode VT2 with Nodes between the diode D7, the base stage contact resistance R5 of triode VT1, the other end of resistance R 5 connects the end of the coil Tn1 of magnetic ring transformer T, between the collector electrode and resistance R 3 of the other end access triode VT2 of coil Tn1, the resistance R 5 of series connection, coil Tn1 is also in parallel with diode D6, the base stage contact resistance R6 of triode VT2, the other end of resistance R 6 connects the end of the coil Tn2 of magnetic ring transformer T, the other end of coil Tn2 is connected with the other end of resistance R 4, described resonant circuit includes inductance L, capacitor C 5, the end connecting coil Tn1 of the coil Tn3 of magnetic ring transformer T, one end connects inductance L, inductance L access fluorescent tube LAMP, the other end of fluorescent tube LAMP is by the collector electrode of capacitor C 4 access triode VT1, the two ends of fluorescent tube LAMP are parallel with capacitor C 5, civil power access rectification circuit, filter capacitor C1 is through rectification, become direct current after the filtering, again through resistance R 1, R2, the start-up circuit that D7 forms, start-up circuit starts VT1, VT2, R3, R4, R5, R6, the switching circuit that magnetic ring transformer T forms, inductance L, C5 forms resonant circuit by tube filament, when amplitude reached the value that punctures fluorescent tube, tube starting was luminous.