CN2130024Y

CN2130024Y - Magnetic saturated voltage stabilizing daylight lamp ballast

Info

Publication number: CN2130024Y
Application number: CN 92218281
Authority: CN
Inventors: 沈彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-05
Filing date: 1992-07-05
Publication date: 1993-04-14
Anticipated expiration: 2002-07-05

Abstract

The utility model discloses a magnetic saturated voltage stabilizing daylight lamp ballast, which is formed by the theory of magnetic saturated automatic voltage stabilizing on the basis of an original inductance type ballast, comprising a harmonic oscillation circuit, a preheating anti-oscillation clipping circuit, a voltage stabilizing current-limiting circuit and a manual control circuit. The utility model has the advantages of remarkable effect of electricity saving, quick start, wide range of starting voltage and working voltage, high power factor, long service life of lamp tube, resuming light of lamp tube with a broken filament, no leak of high-frequency current induction, high luminous flux, etc. The utility model is a more ideal updated product of inductance type ballasts.

Description

Magnetic saturated voltage stabilizing daylight lamp ballast

The utility model relates to a kind of ballast of fluorescent lamp.

At present the ballast of China's fluorescent lamp uses to such an extent that be Inductive ballast the most widely, and Inductive ballast and starter be jointly to fluorescent lamp build-up of luminance, voltage stabilizing, current limliting, makes the fluorescent lamp normal illumination.Drawbacks such as the power factor (PF) of this kind ballast is lower, and the starting time of fluorescent lamp is long, causes fluorescent wire aging easily, and starter is fragile, and fluorescent lamp is can not starter luminous when voltage is low; Also has an electron-like ballast, kind is a lot, it is remarkable that it has power savings, start fast, starting resistor and operating voltage range are wide, the power factor (PF) advantages of higher, but also exist cost big (than the Cost Growth of Inductive ballast more than a times), the specification requirement height, mould shortcomings such as the yielding ignition of shell, what the output of this kind ballast used simultaneously is the big electric current of high frequency, the high-frequency induction ability is that tens times of line-frequency induction ability arrive hundred times, entire circuit can't shield again, therefore, the leakage of high-frequency current will bring certain harm to human body under certain occasion, also radio is had certain interference.

The purpose of this utility model: be to provide a kind of start fast, power factor (PF) is high, starting resistor and operating voltage range is wide, the voltage and current of tube filament is impacted little, fluorescent tube long service life, low, energy-efficient, the no high-frequency current of cost fluorescent lamp magnetic saturation type voltage regulation ballast leakage, that need not to use starter during starting.

The utility model purpose is achieved in that an end filament and the coil L of capacitor C through fluorescent-lamp tube ₁Constitute the two ends that resonant circuit is connected on power supply, coil L ₃With coil L ₁For the transformer type coupling, by coil L ₃Link to constitute the pre-thermal resistance clipping circuit that shakes, coil L with fluorescent tube other end filament ₂An end be connected pre-thermal resistance and shake on the clipping circuit, the other end is attached at string to be had on the power input of capacitor C, constitutes the voltage stabilizing current-limiting circuit, makes whole fluorescent start circuit and power connection and cut-out by K switch.

The utility model is owing to adopt shake clipping circuit, voltage stabilizing current-limiting circuit, manual control circuit of resonant circuit, pre-thermal resistance to constitute, make it except have in the market electric ballast energy-conservation, start the wide advantage of fast, starting resistor and operating voltage range, it also has following advantage:

When 1, opening, the voltage and current of filament is impacted much smaller than Inductive ballast, stability is higher than Inductive ballast, therefore the useful life that can improve fluorescent tube effectively;

2, air tight at fluorescent tube, as long as there is an end under the filament breaking situation fracture of wire fluorescent tube is recovered lost eyesight;

3, production cost low, only be 50% of high-frequency electronic ballast cost, only slightly height is a bit than inductance type ballast;

4, input and output side is industrial-frequency alternating current, has overcome the induction of electric ballast high-frequency current and has leaked the shortcoming that can't shield;

5, under equal low-voltage, use the fluorescent tube light flux ratio inductance type and the electric ballast of magnetic saturation type voltage regulation ballast to significantly improve.

Below in conjunction with accompanying drawing the utility model is further described.

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

After connecting K switch, by capacitor C through fluorescent tube one end filament and coil L ₁The resonant circuit that constitutes is connected on the input of power supply, and this end filament is preheated on the one hand, and the resonant circuit starting of oscillation forms high pressure at the two ends of capacitor C on the other hand, since an end that terminates at fluorescent tube of capacitor C, the other end coils L of capacitor C ₂Be connected on the other end of fluorescent tube, so the high pressure at capacitor C two ends directly is added in the two ends of fluorescent tube, makes gas ionization starter in the fluorescent tube.Coil L ₃With coil L ₁Constitute the transformer type coupling, when K switch is connected, one side L ₃Formed induced current is to filament pre-heating; Behind the fluorescent tube ionization starter, the voltage at capacitor C two ends descends, on the other hand coil L ₃Magnetic flux φ ₃To coil L ₁Magnetic flux φ ₁Certain resistance slicing effect of shaking is arranged; Coil L ₂Behind tube starting, can stablize rapidly and flow into lamp tube current, make fluorescent lamp luminous stable, capacitor C seal in the power factor (PF) that can also improve fluorescent lamp ballast, thereby reach energy-efficient purpose.

Claims

1, a kind of magnetic saturation type voltage regulation fluorescent lamp ballast is characterized in that: capacitor C is through fluorescent tube one end filament and coil L ₁Series connection constitutes resonant circuit, coil L ₃With coil L ₁Be transformer type coupling, coil L ₃Link to constitute the pre-thermal resistance clipping circuit that shakes with fluorescent tube other end filament; Coil L ₂An end be attached at pre-thermal resistance and shake on the clipping circuit, the other end is connected string to be had on the power input of capacitor C, constitutes the voltage stabilizing current-limiting circuit, is linked to each other the other end and coil L with power input by K switch one end ₁Link and constitute manual control circuit.