CN2790101Y - Energy-saving lamp with high performance - Google Patents

Abstract

The utility model relates to an energy-saving lamp with high performance, which has the advantages of simple structure, small volume and low cost. The energy-saving lamp with high performance comprises a rectifying filtering circuit, an oscillating circuit and a lamp tube. The energy-saving lamp with high performance is characterized in that the voltage of a grid pole and a source pole of field effect transistor is controlled by arranging a divider circuit in a triggering circuit, the field effect transistor is prevented from breakdown, which plays a protective function. In addition, the service life is prolonged and the performance is improved simultaneously.

Description

High-performance energy saving lamp

Technical field

The utility model relates to a kind of lamp, particularly a kind of electricity-saving lamp.

Background technology

Among the disclosed Chinese patent bulletin CN2559180Y a kind of " electronic ballast for fluoresent lamp of unsymmetrical oscillation type circuit " disclosed on July 2nd, 2003, it comprises current rectifying and wave filtering circuit, the output of current rectifying and wave filtering circuit connects oscillating circuit, the serve as reasons unsymmetrical oscillation circuit of electrolysis coupled modes formation of the straight coupling mode of the triode that is connected with the output of current rectifying and wave filtering circuit and another triode of oscillating circuit; And triode is because electric current has positive temperature effect, usually in use can Yin Wendu raises and burns out; Thereby in oscillating circuit the essential element such as a large amount of resistance that uses as protection; The shortcoming of this electric ballast is: if the circuit structure complexity, element is many, volume is big, the high temperature of cost raises and burn easily.

Summary of the invention

The purpose of this utility model is the problem that circuit structure complexity, element are many, volume is big, cost is high that exists in the existing electric ballast in order to solve, and a kind of simple in structure, volume is little, cost is low high-performance energy saving lamp is provided.

Technical scheme:

The purpose of this utility model is achieved in that a kind of high-performance energy saving lamp, comprise current rectifying and wave filtering circuit and fluorescent tube, after it is characterized in that resistance R 1 and R2 series connection, connect with capacitor C 2 again, the negative pole of the positive pole of another termination current rectifying and wave filtering circuit of resistance R 1, another termination current rectifying and wave filtering circuit of capacitor C 2, the contact between resistance R 1 and the resistance R 2 is defined as contact A; Contact between resistance R 2 and the capacitor C 2 is defined as contact B, is connected to diode D5 between contact A and the contact B; The drain electrode of field effect transistor G1 meets positive pole, the source electrode contact A of current rectifying and wave filtering circuit, the source electrode of field effect transistor G2 meets negative pole, the drain electrode contact A of current rectifying and wave filtering circuit, between the grid of field effect transistor G1 and the source electrode and be connected with transformer coil N1 and resistance R 3 and be connected to capacitor C 3 between drain electrode and the source electrode; Be connected between the drain electrode and source electrode of field effect transistor G1 after capacitor C 4, fluorescent tube DG, choking-winding L, the transformer coil N2 series connection, be connected to capacitor C 5 between the filament at fluorescent tube DG two ends; Between the grid of field effect transistor G2 and the negative pole of current rectifying and wave filtering circuit and be connected with transformer coil N3 and resistance R 4, connect between the grid of field effect transistor G2 and the described contact B and be connected to resistance R 5 and bidirectional diode D6.

Described high-performance energy saving lamp is characterized in that the phase place of described transformer coil N3 is opposite with the phase place of transformer coil N1, N2.

The utility model is that the using metal oxide semiconductor field effect transistor replaces the fluorescent lamp of present domestic manufacturer production and the triode in the electricity-saving lamp ballasting circuit; The characteristics of field effect transistor are so that driven, drive circuit are simply low in energy consumption, electric current has the subzero temperature effect can be high temperature resistant; Simple because of the utility model circuit, element is few, volume is little, cost is low, high temperature resistant, stable performance, thereby is prolonged the useful life of its product.

Beneficial effect:

Because adopted technical scheme described in the utility model, high-performance energy saving lamp described in the utility model to need not the voltage-stabiliser tube protection, circuit is simple, used element lacks than traditional transistor circuit, has saved cost and space.

Description of drawings

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

Shown in the accompanying drawing circuit theory diagrams of an embodiment of high-performance energy saving lamp described in the utility model.

Embodiment:

Embodiment is the circuit theory diagrams of high-performance energy saving lamp described in the utility model shown in the accompanying drawing.As seen, described high-performance energy saving lamp comprises the current rectifying and wave filtering circuit and the fluorescent tube DG that are made up of four diode D1, D2, D3, D4 and capacitor C 1 from accompanying drawing; Its course of work is as follows: alternating voltage is that the power supply of 220V or 110V becomes Rectified alternating current behind D1, D2, D3, D4 and C1 rectifying and wave-filtering, through resistance R 1 and R2 capacitor C 2 is charged, when the voltage of capacitor C 2 reaches 30V, (capacitor C 2 and bidirectional diode D6, R5 form saw-toothed wave generator to bidirectional diode D6 through resistance R 5 conductings, resistance R 5 plays the grid effect of dividing potential drop protection field effect transistor G2), voltage is added in the grid of field effect transistor G2, cause drain electrode and the source electrode conducting of field effect transistor G2, voltage descends; Wherein one road electric current is to capacitor C 3 chargings, another road electric current is through capacitor C 4, capacitor C 5, choking-winding L, transformer coil N2, when flowing to choking-winding L, electric current produces high pressure, this high pressure is used for starter fluorescent tube DG, choking-winding L plays metering function behind the tube starting, voltage induced on the transformer coil N2 makes the grid of field effect transistor G1 obtain voltage and conducting to transformer coil N1, capacitor C 3 is discharged by equivalent short circuit, the discharge of fluorescent tube partial circuit, transformer coil N1 provides reverse voltage for the grid of field effect transistor G2 by transformer coil N3 simultaneously, and field effect transistor G2 is ended; During field effect transistor G1 conducting, when capacitor C 4 and C5 discharge, opposite when electric current that transformer coil N2 flows through and charging, being induced to transformer coil N3 provides by the positive voltage of negative change to the grid of field effect transistor G1, and the grid that is induced to field effect transistor G1 is by just becoming negative voltage, result: field effect transistor G1 is from being conducting to shutoff, and field effect transistor G2 gives capacitor C 3, C4, C5 and fluorescent tube DG power supply once more from turn-offing conducting; So field effect transistor G1 and G2 take turns conducting, shutoff, by adjusting the parameter of circuit element, both switching frequencies are adjusted in the 40KHz---80KHz scope.

The opening of general electric ballast shaken and all triggered by diac, and the trigger voltage of diac is 32V, very easily with the grid-source breakdown of field effect transistor.Present embodiment is behind series resistor R5 between the grid of diac D6 and field effect transistor G 2, make R4 and R5 constitute bleeder circuit, suitably value just can make the grid of field effect transistor G2 and the voltage control between the source electrode about 20V, and is unlikely to grid-source breakdown.

Claims (2)

1, a kind of high-performance energy saving lamp, comprise current rectifying and wave filtering circuit and fluorescent tube, it is characterized in that resistance (R1) and (R2) series connection after, connect with electric capacity (C2) again, the negative pole of another termination current rectifying and wave filtering circuit of the positive pole of another termination current rectifying and wave filtering circuit of resistance (R1), electric capacity (C2), the contact between resistance (R1) and the resistance (R2) is defined as contact (A); Contact between resistance (R2) and the electric capacity (C2) is defined as contact (B), is connected to diode (D5) between contact (A) and the contact (B); The drain electrode of field effect transistor (G1) connects positive pole, the source electrode contact (A) of current rectifying and wave filtering circuit, the source electrode of field effect transistor (G2) connects negative pole, the drain electrode contact (A) of current rectifying and wave filtering circuit, between the grid of field effect transistor (G1) and the source electrode and be connected with transformer coil (N1) and resistance (R3) and drain and source electrode between be connected to electric capacity (C3); Be connected between the drain electrode and source electrode of field effect transistor (G1) after electric capacity (C4), fluorescent tube (DG), choking-winding (L), transformer coil (N2) series connection, be connected to electric capacity (C5) between the filament at fluorescent tube (DG) two ends; Between the grid of field effect transistor (G2) and the negative pole of current rectifying and wave filtering circuit and be connected with transformer coil (N3) and resistance (R4), connect between the grid of field effect transistor (G2) and the described contact (B) and be connected to resistance (R5) and bidirectional diode (D6).

2,, it is characterized in that the phase place of described transformer coil (N3) is opposite with the phase place of transformer coil (N1, N2) according to the described high-performance energy saving lamp of claim 1.