CN2152371Y - Electronic lamp starter - Google Patents

Abstract

The utility model relates to a starting stabilizer of a gas discharge tube, which leads the input of power to be filtered and rectified by a power supply circuit and then to be connected to a lighting circuit by high-frequency oscillation generated by an oscillating circuit through voltage selection; the lighting circuit is connected in series with two secondary coils, so that two ends of one coil are connected to one side of the fluorescent lamp, the other side of the fluorescent lamp is connected in series with a resistor to a power supply end, and the two secondary coils enable a filament on one side of the fluorescent tube to continuously pass current after the fluorescent tube discharges and emits light, so that the fluorescent lamp can be kept to be lightened at low voltage, the electric power is saved, the service life of the fluorescent tube is prolonged, and the fluorescent lamp can be applied to the fluorescent tubes with different powers.

Description

The utility model relates to a start-up stabilizing device for a gas discharge tube, in particular to a lamp tube with different powers, which can save power consumption and prolong the life of the lamp tube.

Gas discharge tubes are the most widely used lamps for lighting, display and decoration, such as fluorescent lamps and neon lamps.

Existing discharge tubes of this type mainly emit electrons through the electrodes on both sides of the tube, and collide with the gas filled inside the tube (such as mercury vapor) to emit invisible ultraviolet light, which irradiates the fluorescent light on the inner wall of the tube. A metal salt that emits visible light. The lamp tubes of different colors can be produced by selecting different phosphors.

When the traditional discharge lamp is turned on, the gas must be discharged, and after being turned on, it needs to be stably luminous with an appropriate current. Therefore, the existing fluorescent lamps all include two necessary components of a stabilizer and a starter. However, starters that generally use bimetal strips often break down, and the life of the lamp tube is not long.

Therefore, electronic fluorescent lamp starting and stabilizing devices have been developed and widely used. Most of the existing electronic fluorescent lamp starting and stabilizing devices use an oscillating circuit to heat the filament and generate voltage pulses. After the lamp tube is discharged, the filaments on both sides stop working. The electronic current limiting circuit is used to drive the lamp tube to continuously discharge and emit light. In this way, the filament stops functioning, so the lamp tube must be discharged and glow normally under a relatively high voltage, which makes the fluorescent layer of the lamp tube easily damaged and affects the service life of the lamp tube. Of course, this method also consumes more power.

In addition, general fluorescent tubes have many different specifications, and the old electronic fluorescent lamp starting and stabilizing devices must design a circuit for each different power, which is obviously not ideal.

The utility model aims to provide a start-up stabilizing device for a gas discharge tube, so that when the power is input, it will be filtered and rectified by a power supply circuit, and then the voltage will be selected to generate high-frequency oscillation through an oscillating circuit and connected to the lighting circuit. The circuit connects two secondary coils in series with a capacitor, and connects both ends of one of the coils to one side of the fluorescent lamp, and connects a resistor in series to the power supply terminal on the other side of the fluorescent lamp. After the tube discharges and emits light, there is still a current flowing through it for heating, so that the fluorescent lamp can maintain the light at a low voltage, so as to save power consumption, prolong the life of the lamp tube, and can be applied to lamps of different powers.

Fig. 1 is the utility model embodiment circuit diagram;

Fig. 2 is a circuit diagram of another embodiment of the utility model.

Please refer to Fig. 1, the startup stabilizing device of the present utility model generally includes a power supply circuit 10, a voltage selection circuit 20, an oscillation circuit 30 and a lighting circuit 40; wherein:

The power supply circuit 10 connects the two power input terminals to a transformer T1, a capacitor C1 is connected in parallel to the rear end of the transformer T1, and a capacitor C4 is connected in parallel to the rear end of the transformer T1, and a capacitor C2 and C3 are connected in series at each pole of the power supply to be grounded to form a filter circuit. Reduce radio interference and flicker, and then rectified by rectifier D1 as power supply;

The voltage selection circuit 20 is composed of two sets of capacitors C5~C6 connected in parallel and resistors R2~R3 connected in series. A jumper pin JP is used to select different power supply voltages (110V or 220V switching). When using a 110V power supply, use JP short circuit, JP open circuit when using 220V power supply;

The oscillating circuit 30 uses the secondary coil L1 as a trigger signal to switch the transistor TR for driving the supply coil L2, and cooperates with the capacitor C9 connected in parallel with L2 to generate high-frequency oscillation;

The lighting circuit 40 is composed of a capacitor C10 and a secondary coil L3, L4 connected in series, and the two ends of the secondary coil L4 are connected to the electrode 2 of the filament 2a on one side of the fluorescent lamp 1, and a resistor R4 is connected in series to the electrode 2 on the other side of the fluorescent lamp , and connected to the power supply terminal, through the above-mentioned two-phase series-connected secondary coils L3 and L4, the filament 2a on the side of the fluorescent lamp is still heated by a small amount of current after the lamp tube discharges and emits light, so that it can be maintained at a lower voltage The fluorescent lamp emits light, and the secondary coil L3 pulls out several contact points a1, a2, a3 at the middle position of the winding of the coil, for lighting fluorescent tubes of different powers.

In another feasible embodiment of the present utility model, it includes a power supply circuit (100), an oscillation circuit (200) and a lighting circuit (300), wherein:

The power supply circuit (100) is composed of a transformer T1, a filter FL1 composed of capacitors and a rectifier D1; however, in order to avoid overload and short circuit, in addition to connecting a fuse F1 in series to the input end of the power supply, there is also a fuse F1 connected in series. The thermistor HR that is like an open circuit when the current is overcurrent;

An oscillating circuit (200), using a primary coil L1 of a transformer T2 and a capacitor C1 connected in parallel with it as LC oscillation to trigger the control transistor Q1;

The lighting circuit (300) is composed of the primary coil L2 controlled by the transistor Q1 and the secondary coils L3, L4, L5, wherein L3 and L4 induce low voltage for heating the filaments (401) and (402) of the lamp (400), The coil L5 is connected in series to the coil L2 with a capacitor C2, so that when the power is turned on, the coil L5 can induce a high voltage due to the conduction of L2 controlled by the oscillation circuit (200), such as the coil L5 is connected in series with the other end of the capacitor C2 Then it can be connected to one end of the filament (401) of the lamp (400), and connected to one end of the filament (402) from the power "+" terminal of the power supply circuit (100);

In this way, when the filaments (401) and (402) of the lamp (400) are heated by the low voltage of the coils L3 and L4 respectively, and the high voltage pulse generated by the coil L5 can make the lamp (400) light up, once the lamp (400) After it is fully lit, the oscillation circuit (200) stops oscillating and generates pulse high voltage due to the instantaneous drop of internal impedance, and keeps lighting on.

However, in order to be applicable to lamps with various wattages, the oscillating circuit (200) is connected in series with a vacuum resistor (500); the vacuum resistor (500) can automatically adjust its internal impedance according to the magnitude of the passing current, so that it can automatically adjust The size of its high-voltage pulse is suitable for lighting lamps with various wattages.

Claims (4)

1, a kind of gas discharge tube starts stabilizer, it is characterized in that, comprises:

One power supply circuit makes two power inputs be connected to a transformer, gives rectification output again;

One voltage selecting circuit is in series by electric capacity, the resistance of majority group parallel connection, uses and selects different supply voltages;

One oscillating circuit is used to promote a power supply coil as triggering signal to switch a transistor with secondary coil, cooperates the electric capacity in parallel with this supply coil to produce the higher-order of oscillation; And

One lamp circuit, this lamp circuit is with the electric capacity formation of connecting with twice level coils, and making wherein, a level coil two is connected to fluorescent tube one side lamp silk electrode; This fluorescent tube opposite side electrode is then connected a resistance and is connected to power end, thereby still continues to have electric current to pass through heating behind the fluorescent tube Discharge illuminating at fluorescent tube one side lamp silk, and can keep lamp luminescence with low voltage.

2, gas discharge tube starts stabilizer according to claim 1, it is characterized in that wherein level coil of lamp circuit twines middle section position in coil, and drawing goes out several contact points to light the different capacity fluorescent tube.

3, a kind of gas discharge tube starts stabilizer, it is characterized in that, comprises:

One power supply circuit of forming by transformer, filter and rectifier;

One oscillating circuit, in parallel by primary coil with electric capacity with five loop transformers, produce pulse with vibration, in order to control another primary coil of this transformer, and this first coil tandem one electric capacity, and connect with a level coil of this transformer, make this secondary coil be connected in series the end in addition of an electric capacity, supply a lamp circuit in order to light a lamp to produce high voltage pulse, this high-voltage pulse connects another filament of fluorescent tube, another filament of this fluorescent tube then is connected to power positive end and supplies to light a lamp, and other twice level coils of above-mentioned transformer are then supplied the two filaments heating of fluorescent tube respectively.

4, start stabilizer as gas discharge tube as described in the claim 3, it is characterized in that, described oscillating circuit also is serially connected with a vacuum resistance that can change according to the power supply size.

5, start stabilizer as gas discharge tube as described in the claim 3, it is characterized in that, the ac input end of described power supply circuit can change the thermistor of internal resistance when also being serially connected with an overload.

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