CN2217294Y - Electronic ignitor for two fluorescent lamps - Google Patents

Abstract

The utility model provides an electronic ignitor for two fluorescent lamps, which belongs to the controlling device of the fluorescent lamps of the field of electricity. The utility model is composed of a housing, and a controlling circuit. The controlling circuit is composed of an anti-interference transformer T<1>, a voltage boosting rectifying circuit which is formed by four pairs of voltage doubler rectifying circuits which are positioned symmetrically, and two pairs of filtering circuits which are corresponding to the voltage boosting rectifying circuit and symmetrically and parallelly positioned. The output ends of the two pairs of the filtering circuits are connected with two fluorescent lamps which are connected in series. The utility model overcomes the defects of the prior art. The utility model can normally work under the condition that the low-tension is 130V and the low temperature is-25 DEG C. The utility model has the advantages of one time start, and no stroboflash of the fluorescent lamp. The service life of the fluorescent lamp is increased more than one time, and the utility model can save energy more than 35%.

Description

The daylight double electronic ignitor

The utility model provides a kind of daylight double electronic ignitor, belongs to the control device of fluorescent lamp in the electricity field.

In the prior art, fluorescent lamp is used its take-off of control and work by induction reactance formula ballast and starter.During power connection, glow discharge by neon tube in the starter, its contact is connected, just there is electric current to flow through ballast and filament of fluorescent lamp, make filament heating emitting electrons, when starter stops glow discharge, owing to produce instantaneous high pressure self induction electromotive force and supply voltage superposition on the ballast at the two ends of fluorescent lamp, thus cause the glow discharge of fluorescent lamp.Its shortcoming is, when temperature is lower, or voltage is when low, and the starter neon tube does not discharge, not take-off of fluorescent lamp, and repeatedly take-off sometimes can damage fluorescent tube like this.Even under all normal situation of temperature and commercial power supply, fluorescent lamp can operate as normal, but have almost half the operating voltage step-down and it follow use ballast on, ballast will consume considerable electric energy.

The purpose of this utility model is to provide a kind of and still can disposablely starts under low temperature, low-voltage, the daylight double electronic ignitor of energy-conservation, two fluorescent lamp work of may command.

Daylight double electronic ignitor provided by the utility model comprises shell and control circuit, and described control circuit is by anti-interference transformer T ₁, boost rectifying circuit and filter circuit form, wherein boost rectifying circuit is by capacitor C ₁, C ₄, rectifier diode D ₁, D ₂Capacitor C ₂, C ₅, rectifier diode D ₃, D ₄Capacitor C ₃, C ₆, rectification diode D ₅, D ₄, capacitor C ₃, C ₇, rectifier diode D ₆, D ₇, four groups of in parallel symmetrically arranged voltage doubling rectifing circuits are formed, and filter circuit is by capacitor C ₄, C ₅, capacitor C ₆, C ₇Form with two groups of symmetrically arranged filter circuits in parallel that shared filter resistance R constitutes.Anti-interference transformer T ₁Input and AC power join, its two output joins with two public inputs of four groups of voltage doubling rectifing circuits forming boost rectifying circuit respectively, in the boost rectifying circuit, the output of per two groups of voltage doubling rectifing circuits is done the input of two groups of filter circuits again simultaneously, the output of two groups of filter circuits joins with two fluorescent tubes respectively, and wherein the tie point of the public output of two filter circuits and two fluorescent lamps joins.In four groups of symmetrically arranged boost rectifying circuits in parallel, capacitor C ₁, C ₂, C ₃A set associative pole plate constituted a public input of four groups of circuit, join with an output of anti-interference transformer, be symmetrical arranged the rectifier diode D that is connected in series ₂, D ₃With rectifier diode D ₅, D ₆Tie point constituted another public input of four groups of circuit and another output of anti-interference transformer is joined, in four groups of boost rectifying circuits, capacitor C ₁With the rectifier diode D that is connected in series ₁, D ₂Tie point join capacitor C ₄Be connected on diode D ₁, D ₂Positive and negative electrode between, become the output of this group circuit; Capacitor C ₂With diode D ₄The serial connection and be that two groups of boost rectifying circuits are common, rectifier diode D ₃, D ₄Negative pole all and capacitor C ₂With rectifier diode D ₄Positive pole join capacitor C ₅Be connected on rectifier diode D ₃, D ₄Positive and negative electrode between; Capacitor C ₆Be connected on rectifier diode D ₅, D ₄Positive and negative electrode between, constitute the output of these two groups of circuit; Capacitor C ₃With the rectifier diode D that is connected in series ₇, D ₆Tie point join capacitor C ₇Be connected on rectifier diode D ₇, D ₆Positive and negative electrode between constituted the output of this group circuit.Capacitor C ₄, C ₅, C ₆, C ₇Be connected in series, resistance R is connected on electric capacity ₅, C ₆Tie point on and with diode D ₄Join capacitor C ₄, C ₅, C ₆, C ₇Constitute two groups of filter circuits with resistance R, shared filter resistance R is the public output of two filter circuits, capacitor C ₄With rectifier diode D ₁The pole plate that positive pole joins, capacitor C ₇With rectifier diode D ₇The pole plate that positive pole joins has constituted two outputs in addition of two filter circuits.Daylight double electronic ignitor control circuit provided by the utility model is eliminated in the AC mains behind the interference noise by anti-interference transformer, alternating current is added to the public input of four groups of voltage doubling rectifing circuits forming boost rectifying circuit, makes the output capacitor C that respectively organizes voltage doubling rectifing circuit ₄, C ₅, C ₆, C ₇On obtained multiplication of voltage, again by after two groups of filter circuit filtering, stably, the direct voltage that raises is added in the two ends of each fluorescent tube because four groups of voltage doubling rectifing circuits are that parallel connection is symmetrically arranged, capacitor C ₂, rectifier diode D ₄Common for middle two groups of voltage doubling rectifing circuits, pass through capacitor C ₂, diode D ₄The voltage that arrives the tie point place of two fluorescent tubes to the resistance R of filter circuit is positive voltage, by two output diode D in addition of two groups of filter circuits ₁With capacitor C ₄Tie point and diode D ₇With capacitor C ₇Tie point output and two fluorescent tubes joint, two ends in addition are negative voltage.Because when circuit was connected, the fluorescent lamp two ends had produced high pressure, make the mercury vapour of fluorescent tube inside be subjected to high-voltage breakdown and conducting, resistance reduces, and the high pressure at fluorescent lamp two ends was promptly reduced to the normal working voltage of fluorescent tube after fluorescent tube started.Because this control circuit adopts the electronic devices and components assembling, power consumption is very low, has saved a large amount of electric energy.Simultaneously, because when circuit is connected, the high pressure that the fluorescent lamp two ends produce is enough to make its internal electron to produce warm-up movement bump fluorescent material and fluorescent lamp is finished disposable take-off, and no matter temperature is low to moderate-25 ℃ or operating voltage and is low to moderate 130V, control circuit all can make the fluorescent tube two ends produce instantaneous high pressure and make fluorescent lamp take-off work, this electronic ignitor, not only may command is two-tube, but also single tube uses, when single tube uses, another not power consumption of road.

The two-tube electronic ignitor that the utility model provides is simple in structure, and control circuit is reasonable, and the easily advantage of starting is arranged under energy-conservation, noiselessness, low temperature, the low pressure, with sense formula ballast of the prior art relatively, energy-conservation can be more than 35%.

Description of drawings:

Fig. 1 the utility model provides daylight double ignitor control circuit electrical schematic diagram.

Wherein: FL ₁, FL ₂Be fluorescent tube.

Below in conjunction with Fig. 1 operation principle of the present utility model is described, be added in the public input of four groups of voltage doubling rectifing circuits from the voltage of anti-interference transformer output, when voltage was in positive half cycle, upper and lower two groups of voltage doubling rectifing circuits were respectively by commutation diode D₂、D ₆To capacitor C₁、C ₃Charging makes voltage on it be charged to the peak value of transformer output voltage, when voltage is in negative half period, and C₁、 C ₃On voltage respectively with the output voltage addition of transformer after, more respectively by diode D₁、D ₇To capacitor C₄、C ₇Charging makes voltage on it reach 2 times of transformer output voltage, and by capacitor C₂、C ₅, diode D₃、D ₄, capacitor C₂、C ₆, diode D₅、D ₄Two groups of voltage multiplying rectifiers that form, operation principle is therewith identical, but when voltage is in negative half period, by diode D₃、D ₅To capacitor C₂Charging, when voltage was in positive half cycle, the transformer output voltage added electric capacity C₂Voltage by diode D₄Simultaneously to capacitor C₅、C ₆Charging makes C₅、C ₆Upper voltage restrains to 2 times of the transformer output voltage, can see capacitor C₄、C ₅Charging voltage be lower just, upper negative, capacitor C₆、C ₇On charging voltage be upper just, lower negative, capacitor C₄、C ₅Voltage choosing be added in fluorescent tube 1 two ends, capacitor C by resistance R filtering after adding₆、C ₇Voltage choosing add after by resistance R filtering Be added in the two ends of fluorescent tube 2, thereby produce at the fluorescent lamp two ends when circuit is connected Give birth to high pressure, finish disposable take-off.

Enforcement of the present utility model is very simple, and control circuit is contained on the circuit board by circuit bank shown in Figure 1, draw in the shell of packing into input, output the permanent brightness of daylight double.Wherein rectifier diode adopts more than the withstand voltage 400V, the rectifier diode that rated current 200M A is above, and as serial rectifier diodes such as 1N4004,1N4005,1N4006,1N4007,1N4008,1N4009,1N4010, electric capacity can adopt electric capacity of the dacron.

Claims (2)

1, a kind of daylight double electronic ignitor comprises shell and control circuit, it is characterized in that described control circuit is by anti-interference transformer T ₁, boost rectifying circuit and filter circuit form, wherein boost rectifying circuit is by capacitor C ₁, C ₄, rectifier diode D ₁, D ₂Capacitor C ₂, C ₅, rectifier diode D ₃, D ₄Capacitor C ₃, C ₆, rectification diode D ₅, D ₄, capacitor C ₃, C ₇, rectifier diode D ₆, D ₇, four groups of in parallel symmetrically arranged voltage doubling rectifing circuits are formed, and filter circuit is by capacitor C ₄, C ₅, capacitor C ₆, C ₇Form with two groups of symmetrically arranged filter circuits in parallel that shared filter resistance R constitutes.

2, daylight double electronic ignitor according to claim 1 is characterized in that anti-interference transformer T in the control circuit ₁Input and AC power join, its two output joins with two public inputs of four groups of voltage doubling rectifing circuits forming boost rectifying circuit respectively, in the boost rectifying circuit, the output of per two groups of voltage doubling rectifing circuits is done the input of two groups of filter circuits again simultaneously, the output of two groups of filter circuits joins with two fluorescent tubes respectively, and wherein the tie point of the public output of two filter circuits and two fluorescent lamps joins.

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