CN2226362Y - High-efficient energy-saving electronic ballast - Google Patents

Abstract

The utility model relates to an electric appliance, particularly an electronic ballast for fluorescent lamps. One end of a power supply is connected with an RD, and the other end is connected with a rectifying bridge. The other end of the RD is connected with the rectifying bridge. One end of a capacitance C1 is connected with a resistance R1, the rectifying bridge, a V<1C> and an R3, and the other end of the C1 is connected with a C4, an R1, an R2 and a C2. The other end of the C2 is connected with the rectifying bridge. The other ends of the R2, a C3, a V<2e>, a D6, a C6 and a C3 are connected with a V<1e>, a V<2c>, a D<5>, an R<5>, a C<5>, an n<3> and a K. The other end of the n<3> is connected with an L, and the other end of the L is connected with filaments. Thus, the service life of the fluorescent lamps and the service life of the ballast are enhanced.

Description

Energy-efficient electric ballast

The utility model relates to a kind of electric equipment products, particularly a kind of daylight electronic lamp ballast.

Existing fluorescent lamp ballast volume is bigger, uses to have grown also current noise can take place, to the filament of fluorescent lamp rapid wear that also impacts easily.

The purpose of this utility model is to provide a kind of temperature-sensitive double-metal sheet type switch that has, and adopts the soft-start circuit of high-frequency electrical point fluorescent lamp and capacitor start simultaneously, therefore the life-span that can improve fluorescent lamp and ballast.

The purpose of this utility model realizes by following technical measures:

It is made up of housing, input and output wire terminal and control circuit board, and described circuit is: one of power supply meets RD, and one connects rectifier bridge, another termination rectifier bridge of RD, capacitor C ₁Connecting resistance R ₁, rectifier bridge, V _1c, R ₃, C ₁Another termination C ₄, R ₁, R ₂, C ₂, C ₂Another termination rectifier bridge, R ₂, C ₃, V _2e, D ₆, C ₆, C ₃Another termination V _1e, V _2c, D ₅, R ₅, C ₅, n ₃, K, n ₃Another termination filament of another termination L, L, C ₇Meet lamp tube ends C ₄Another termination filament, V _1bMeet R ₃, R ₇, R ₄, R ₄Another termination D ₅, R ₇Another termination n ₁, n ₁Another termination C ₅, V _2bMeet R ₅, R ₈, R ₆, R ₆Another termination D ₆, R ₈Another termination n ₂, n ₂Another termination C ₆, n ₃Another termination L, K.

Advantage of the present utility model and effect are:

1. because of adopting soft-start circuit (capacitor start) fluorescent tube, this ballast after 0.5-1 second, slowly starts, avoided the process of electronic impact filament, prolonged burn-out life, simultaneously also equal to have prolonged the life-span of fluorescent tube, after a head lamp silk has broken, can be with two lines and to lighting fluorescent tube together in the same old way, all broken in two ends, two ends all separately and together also can be according to using.

2. because of this ballast is a high-frequency electrical point fluorescent lamp, once light, thus the more approximate daylight of light, and do not have any sound, no stroboscopic, working stability, reliable.

3. this ballast installs superpressure, overtemperature, overload protector additional, temperature-sensitive double-metal sheet type switch, when the above temperature of the excessive 300mA of the above electric current of the higher 250V of voltage surpasses 80 ℃, this ballast can both quit work automatically, after waiting all to recover normally, can resume work automatically again, can be because of the unexpected ballast that damage, avoid electric ballast, used blue-sky disadvantage.

4. this ballast duty cycle is leading, therefore can reactive power compensation, improved power supplying efficiency.

Description of drawings is as follows:

Fig. 1 is the utility model front view;

Fig. 2 is the utility model left view;

Fig. 3 is the utility model vertical view;

Fig. 4 is the utility model right view;

Fig. 5 is the utility model circuit theory diagrams.

Below in conjunction with the accompanying drawing illustrated embodiment, the utility model is further described:

Housing 1 is aluminium sheet compression moulding, is furnished with incoming line joint 2 respectively in the both sides of housing, and output line joint 3 is shaped on fixing hole 4 at the both wings of housing, so that use when installing.

Its circuit adopts bridge rectifier, and the 220V civil power is through bridge rectifier, C ₁, C ₂Filtering is at the direct voltage of the about 300V of its two ends generation.By C ₁, C ₂C is passed through in the dividing potential drop effect ₄With filament C ₇, L, n ₃, R ₅Be added to V ₂Base stage make V ₂Saturation conduction.At n ₃In electric current increase; Because the magnetic circuit of bead is saturated, makes n ₁, n ₂Voltage direction change V then ₁Conducting, V ₂End.Because the effect of bead makes V ₁, V ₂In turn conducting, end, produce switching signal, by L and C ₇The series resonant circuit that constitutes is at C ₇Two ends produce high voltage, make the fluorescent lamp starter.

This circuit also is provided with overheating protection circuit, and its principle is: when coil or triode temperature were elevated to certain value, the distortion of U-shaped movable contact spring was when colliding with fixed contact, with n ₃Short circuit, the blocking of oscillator, thus reach the purpose of protection component.

K is a temperature-sensitive double-metal sheet type switch, and when voltage surpasses 250V, electric current is greater than 300mA, and its can auto-closing when temperature surpassed 80 ℃, and circuit is quit work.

Claims (1)

1. energy-efficient electric ballast is made up of housing 1, input and output wire terminal 2,3 and control circuit board, and it is characterized in that described circuit is: one of power supply meets RD, and one connects rectifier bridge, another termination rectifier bridge of RD, capacitor C ₁Connecting resistance R ₁, rectifier bridge, V _1c, R ₃, C ₁Another termination C ₄, R ₁, R ₂, C ₂, C ₂Another termination rectifier bridge, R ₂, C ₃, V _2e, D ₆, C ₆, C ₃Another termination V _1e, V _2c, D ₅, R ₅, C ₅, n ₃, K, n ₃Another termination filament of another termination L, L, C ₇Connect lamp tube ends, C ₄One termination filament, V _1bMeet R ₃, R ₇, R ₄, R ₄Another termination D ₅, R ₇Another termination n ₁, n ₁Another termination C ₅, V _2bMeet R ₅, R ₈, R ₆, R ₆Another termination D ₆, R ₈Another termination n ₂, n ₂Another termination C ₆, n ₃Another termination L, K.

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