CN2267601Y

CN2267601Y - Electronic starter for fluorescent lamp

Info

Publication number: CN2267601Y
Application number: CN 96228301
Authority: CN
Inventors: 丁安荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-05
Filing date: 1996-07-05
Publication date: 1997-11-12
Anticipated expiration: 2006-07-05

Abstract

The utility model relates to an electronic starter for a fluorescent lamp. The positive electrode of a full bridge rectification circuit is connected with a capacitor C< 2 > and a resistor R, the negative electrode is connected with a capacitor C< 1 >, the positive and the negative electrodes of the full bridge rectification circuit are connected with binding posts at both ends of the lamp simultaneously, and thus a circuit which can be quickly started and adapts to a low voltage is formed. Because the utility model adopts cold glow starting, filaments in the lamp can be eliminated, both ends of the lamp can not be blackened in long-term use, and the service life of the lamp is extended. The utility model has the advantages of simple structure and long service life, the maximal power consumption is less than 200 milliwatts, and the utility model is suitable for fluorescent lamps of various specifications.

Description

Electronic starter for fluorescent lamp

The utility model belongs to the circuit arrangement of discharge lamp igniting or control, specifically is used for the starter device of straight tube, U type fluorescent lamp.

The tradition starter is to be formed in parallel by a neon bulb and little electric capacity, by preheating reaches the starter purpose to tube filament, this starter is higher to voltage request, usually be not less than 215V, because of using filament pre-heating easily to cause inner fluorescent material evaporation charing, thereby cause lamp tube service life to shorten, starting current is big, and the starter life-span is short.

The purpose of this utility model provides a kind of simple in structure, not only can save tube filament but also can make minimum starting voltage starter device of build-up of luminance at once after the 170V energized.

The purpose of this utility model is achieved in that it is made up of shell and electronic component, and the starting point is that electronic component is a full bridge rectifier and anodally is connected in series capacitor C with exchanging between the end of importing at it ₂And resistance R, between the negative pole of full bridge rectifier and the other end that exchanges input, connect capacitor C ₁, the both positive and negative polarity of full bridge rectifier connects the two ends of fluorescent tube respectively simultaneously.

In the fluorescent tube that joins with the both positive and negative polarity of full bridge rectifier can be no filament fluorescent tube.

Electrode in the no filament fluorescent tube that is connected with the both positive and negative polarity of full bridge rectifier can be made the U type.

Below in conjunction with accompanying drawing and execution mode thereof the utility model is further described.

Fig. 1 is used for the wiring schematic diagram of daylight lamp circuit for the utility model;

Fig. 2 is circuit theory diagrams of the present utility model;

Fig. 3 is a schematic diagram no filament, U type electrode fluorescent tube.

As shown in Figure 1, the phase line of 220V alternating current is connected with ballast 3 one ends, ballast 3 output lines are connected with arbitrary interchange incoming line of this starter 2, and zero line exchanges incoming line with another root of this starter 2 and is connected, and the both positive and negative polarity of starter 2 outputs is connected with the arbitrary binding post in fluorescent tube 1 two ends.Positive pole one end of the full bridge rectifier in starter 2 connects capacitor C as shown in Figure 2 ₂An end, C ₂The other end and the end of current-limiting resistance R link to each other, the other end of resistance R with exchange one of incoming line and link to each other, connect capacitor C at negative pole one end of full bridge rectifier ₁, capacitor C ₁Another termination exchange another root of incoming line, the both positive and negative polarity of full bridge rectifier connects fluorescent tube 1 two ends respectively, constitutes one and starts soon, be suitable for the circuit of low-voltage, owing to adopt cold starter, the filament in the fluorescent tube 1 can save, fluorescent tube 1 two end electrodes 4 also can be made U type as shown in Figure 3, capacitor C ₂Be large value capacitor, with C ₂The resistance R of serial connection, in order to current limliting and reduction voltage peak, after energized, apply a direct voltage for fluorescent tube 1 two ends by full bridge rectifier, constitute the ac circuit of the big impedance of a little electric current by capacitor and fluorescent tube, cause at this moment fluorescent tube is in open-circuit condition, so the charge and discharge process by capacitor boosts to rectifier bridge, make commutated direct current pressure value reach supply voltage value about 2 times, ballast 3 pressure drops are zero therefore the time in addition, so also be added with alternating voltage with the supply voltage equivalence in lamp tube ends, make fluorescent tube 1 starter at once, along with the minimizing gradually of tube impedance, just conducting thereupon of DC circuit makes fluorescent tube reach normal brightness.With the test of 40W straight tube fluorescent lamp, last fluorescent tube direct current pressure drop is about 108V, exchanges about pressure drop 25V, by big capacitor C ₂Recording the alternating current flow valuve is about 25MA, and fluorescent tube starts, operation is all steady.

The utility model is owing to adopt full bridge rectifier that the supply power mode of fluorescent tube is changed into direct current, at low-voltage 170V starter at once still, use this starter, the long-term use of fluorescent tube can not turned black yet, also can save tube filament, save material, and to using fluorescent tube that original starter resigns from office or fluorescent tube that can not starter all can use as usual, when occurring to reach normal high brightness, lamp tube ends can be put upside down soon the fluorescent tube both positive and negative polarity and use instead, if still can not normally start then for scrapping fluorescent tube with this method.This starter is simple in structure, long service life, and the power consumption maximum is no more than 200 milliwatts, is suitable for the fluorescent lamp of all specifications.

Claims

1. an electronic starter for fluorescent lamp is made up of shell and electronic component, it is characterized in that said electronic component is a full bridge rectifier, and anodal is connected in series electric capacity (C with exchanging between the end of importing at it ₂) and resistance (R), between full bridge rectifier negative pole and the other end that exchanges input, meet electric capacity (C ₁), the both positive and negative polarity of full bridge rectifier connects the two ends of fluorescent tube (1) respectively.

2. according to the said electronic starter for fluorescent lamp of claim 1, it is characterized in that said fluorescent tube can be no filament.

3. according to the said electronic starter for fluorescent lamp of claim 2, it is characterized in that the electrode in the said no filament fluorescent tube can be made the U type.