CN203378127U - Low-voltage energy-saving lamp - Google Patents
Low-voltage energy-saving lamp Download PDFInfo
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- CN203378127U CN203378127U CN201320443933.9U CN201320443933U CN203378127U CN 203378127 U CN203378127 U CN 203378127U CN 201320443933 U CN201320443933 U CN 201320443933U CN 203378127 U CN203378127 U CN 203378127U
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Abstract
The utility model relates to a low-voltage energy-saving lamp. A circuit in the prior art is driven by voltage, as a result, the problem of proneness to increase of power consumption, generation of interference, and imbalance exist, while the objective of the utility model is to solve the above problem. A rectifying and filtering circuit, a push-pull circuit and a load circuit are connected with one another so as to form the low-voltage energy-saving lamp; the push-pull circuit consists of a boost circuit and a common-base high-frequency oscillating circuit; the common base of the common-base high-frequency oscillating circuit is connected with a pulse secondary winding; and the load circuit comprises a lamp tube, a capacitor C43, an inductor L42, a pulse primary winding T31C corresponding to the pulse secondary winding, and a boost secondary winding L41C corresponding to two boost primary windings. According to the low-voltage energy-saving lamp of the utility model, triodes are not driven by voltage, but by current, the current of the collector of each triode is decided by the weight of a load, and therefore, the current is controlled, and inductance is not prone to saturation, as a result, imbalance will not exist in the circuit.
Description
Technical field
The utility model relates to a kind of lighting, especially relates to the low-voltage energy-saving lamp of a kind of current drives, circuit balancing, Cost reduction.
Background technology
Low-voltage energy-saving lamp is widely used from far-off regions, vehicle-mounted, peculiar to vessel, solar illuminating system etc.Existing low-voltage energy-saving lamp application circuit is generally self-excitation push-pull inverter circuit (Royer), and as shown in Figure 1, at first this circuit was invented and designed by American Luo Ye in nineteen fifty-five, but this circuit has the shortcoming of following several respects:
1. transistorized collector electrode peak current is irrelevant with size and the weight of load by the base voltage decision, even cause underload, the electric current of transistor collector also can make transformer saturated, cause transistor power consumption during converting to increase and produce large ripple voltage and noise in disturbing.
2. the as easy as rolling off a log generation of circuit is uneven.Because two switching transistors inconsistent caused, and drive the Winding Design in step-up transformer.Cause transistorized the degree of heat inconsistent, the transistor collector current that temperature is high can further increase, and has caused again further increasing of temperature, and vicious circle causes transistor to burn.
3. the transformer magnetic material generally, at the material that uses rectangular hysteresis loop and high saturation magnetic flux density, causes the raising of transformer cost.
4. requiring transistorized rated voltage Uce is at least the twice of input voltage, has increased design cost.
Summary of the invention
The utility model is mainly that in the solution prior art, circuit is driven by voltage, easily causes power consumption to increase, produce and disturb, and the unbalanced problem of the easy generation of circuit, and the low-voltage energy-saving lamp of a kind of current drives, circuit balancing, Cost reduction is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of low-voltage energy-saving lamp, by current rectifying and wave filtering circuit, push-pull circuit and load circuit connect and compose, push-pull circuit comprises the booster circuit consisted of two primary coils that boost, and the common base high-frequency oscillating circuits formed by two triodes and electric capacity, be connected with the pulse secondary winding that drives two triodes on the common base of common base high-frequency oscillating circuits, described load circuit comprises fluorescent tube, capacitor C 43, inductance L 42, the pulse armature winding T31C corresponding with the pulse secondary winding, with the two secondary winding L41C that boost corresponding to armature winding that boost, inductance L 42, pulse armature winding T31C, the secondary winding L41C that boosts connects successively, described light has two filaments, capacitor C 43 is connected between two filament one ends, inductance L 42, the series circuit that pulse armature winding T31C and the secondary winding L41C that boosts form is connected between the other end of two filaments.Two armature windings that boost of secondary winding L41C and booster circuit of boosting in the utility model form step-up transformer jointly, and boosting, secondary winding L41C place obtains high voltage.Pulse secondary winding in pulse armature winding T31C and push-pull circuit forms pulse transformer by magnet ring, and at the pulse secondary winding, place obtains drive current, to drive two or three utmost point pipe work of common base high-frequency oscillating circuits.Inductance L 42 is current-limiting inductance, plays choking effect, and for controlling lamp current, inductance L 42 forms the resonance point circuit for lamp with capacitor C 43 simultaneously.
After the utility model powers on, electric current produces voltage through the armature winding that boosts, and the secondary winding that boosts produces high pressure, and electric current forms current circuit through whole load circuit.Impedance before lighting a lamp is lower, pulse armature winding T31C electric current is larger, the pulse transformer magnet ring is higher in degree of depth driven saturated self-oscillation frequency, frequency is away from coil L42, the resonance point of capacitor C 43, now the voltage on capacitor C 43 also hangs down and is not enough to light fluorescent tube, filament is in warm-up phase, raising along with filament temperature, resonant circuit impedance also improves, it is saturated that the pulse transformer magnet ring exits the degree of depth gradually, the self-oscillation frequency is close to resonance point gradually, the oscillating voltage of inductance L 42 and capacitor C 43 raises gradually, until fluorescent lamp igniting, light in arc discharge fully.By pulse transformer, produce the drive current of triode at pulse secondary coil place simultaneously, drive respectively two triodes to open and close and form self-oscillation.
The driving of the triode in the utility model push-pull circuit changes current drives into by voltage driving in the past, the transistor collector electric current is determined by the load weight, current controlled, inductance is difficult for saturated, and because drive current is fetched from the load circuit end by pulse transformer, drive current is stable, and circuit can not produce imbalance.Because the resonant circuit of application inductance L 42 and capacitor C 43 formations is lit a lamp, the puncture voltage that does not need to be elevated to fluorescent tube at the voltage of the secondary winding L41C that boosts, only require that voltage is elevated to the 140V left and right and can meets the requirement of lighting a lamp, reduce the number of turn and the voltage between layers of transformer wire bag, improved reliability and the volume of transformer.By the adjustment of the elementary secondary winding parameter of pulse transformer, i.e. adjustable node modulation frequency, determine preheat curent and some modulating voltage, thus the on-off times of fluorescent tube by 1000 times, bring up to more than 10000 times, and improved fluorescent lamp low temperature.Save driving winding and filament heating winding, simplified the design of step-up transformer.
As a kind of preferred version, two armature windings that boost of described booster circuit are respectively boost armature winding L41A and the armature winding L41B that boosts, the boost end of armature winding L41A and the end of the armature winding L41B that boosts intersects, this joining is connected with the current rectifying and wave filtering circuit input, two triodes and the electric capacity of described common base high-frequency oscillating circuits are respectively triode Q41, triode Q42, capacitor C 41, the collector electrode of triode Q41 is connected with the other end of the armature winding L41A that boosts, the collector electrode of triode Q42 is connected with the other end of the armature winding L41B that boosts, described capacitor C 41 is connected between the collector electrode of triode Q41 and triode Q42, the base stage of triode Q41 and triode Q42 is connected respectively on the two ends of pulse secondary winding T31A, the emitter of triode Q41 and triode Q42 intersects, this joining is connected with the output of current rectifying and wave filtering circuit.Booster circuit and common base high-frequency oscillating circuits have formed follow-on push-pull circuit jointly.
As a kind of preferred version, be connected with starting resistance between current rectifying and wave filtering circuit input and triode Q41 base stage, this starting resistance consists of four resistance mutually arranged side by side.These four resistance have formed the starting resistance of triode Q41 and Q42.
As a kind of preferred version, between triode Q41 base stage and emitter, Opposite direction connection has diode D31, and between triode Q42 base stage and emitter, Opposite direction connection has diode D32.The base-emitter clamping diode that diode D31 and D32 are triode Q41 and Q42.Diode D31 positive pole is connected to triode Q41 emitter, and diode D31 negative electrode is connected to the base stage of triode Q41.Diode D32 positive pole is connected to triode Q42 emitter, and diode D32 negative electrode is connected to the base stage of triode Q42.
As a kind of preferred version, described boost secondary winding L41C with also be in series with capacitor C 42 between tube filament is connected.This capacitor C 42 is capacitance, cuts off direct current.
Therefore, the utility model has the advantages that: 1. the driving of the triode in push-pull circuit is driven and is changed into current drives by voltage, and the transistor collector electric current has the load weight to determine, current controlled, inductance is difficult for saturated; 2. circuit can not produce imbalance, and drive current is fetched from the lamp current end by pulse transformer, and drive current is stable, and determines running frequency by it, and design is convenient; 3. the application resonant circuit is lit a lamp, the puncture voltage that does not need to be elevated to fluorescent tube at the voltage of the secondary winding that boosts, only require that voltage is elevated to the 140V left and right and can meets the requirement of lighting a lamp, reduced the transformer wire bag number of turn and voltage between layers, improved reliability and the volume of transformer.4. can pass through the adjustment of pulse transformer winding parameter, it is the adjustable node modulation frequency, determine preheat curent and some modulating voltage, thus the on-off times of fluorescent tube by 1000 times, bring up to more than 10000 times, and improved the startability of fluorescent lamp low temperature (20 ℃).5. the former cause capacitance current-limiting of the lamp current of load circuit, be only applicable to little electric current fluorescent tube as cold-cathode fluorescence lamp, improves lamp current in the back loading circuit and limited by inductance, is more suitable for the hot-cathode fluorescent lamp of large lamp current.6. save driving winding and filament heating winding, simplified the design of step-up transformer.
The accompanying drawing explanation
Accompanying drawing 1 is the low-voltage energy-saving lamp electrical block diagram before not improving;
Accompanying drawing 2 is a kind of electrical block diagrams of the present utility model.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment:
This enforcement as shown in Figure 2, consists of current rectifying and wave filtering circuit, push-pull circuit and load circuit.Current rectifying and wave filtering circuit comprises diode DS11A, DS11B, DS11C, DS11D and capacitor C D11, and this diode DS11A, DS11B, DS11C, DS11D form rectification circuit, and capacitor C D11 is connected between the income and output of rectification circuit.
Push-pull circuit is connected with current rectifying and wave filtering circuit, and this push-pull circuit comprises again booster circuit and common base high-frequency oscillating circuits.This booster circuit comprises boost armature winding L41A and the armature winding L41B that boosts, two armature windings that boost are parallel connection structure, the boost end of armature winding L41A and the end of the armature winding L41B that boosts intersects, and this joining is connected with the current rectifying and wave filtering circuit input.The common base high-frequency oscillating circuits comprises triode Q41, triode Q42, capacitor C 41, pulse secondary winding T31A, diode D31 and diode D32, the other end of armature winding L41A of boosting is connected with the collector electrode of triode Q41, the other end of armature winding L41B of boosting is connected with the collector electrode of triode Q42, capacitor C 41 is connected between the collector electrode of triode Q41 and triode Q42, the base stage of triode Q41 and triode Q42 is connected respectively on the two ends of pulse secondary winding T31A, the emitter of triode Q41 and triode Q42 intersects, this joining is connected with the output of current rectifying and wave filtering circuit, diode D31 positive pole is connected to triode Q41 emitter, diode D31 negative electrode is connected to the base stage of triode Q41, diode D32 positive pole is connected to triode Q42 emitter, diode D32 negative electrode is connected to the base stage of triode Q42.Also be connected with in addition starting resistance on push-pull circuit, this starting resistance is connected between current rectifying and wave filtering circuit input and triode Q41 base stage, and starting resistance is formed in parallel by four resistance R S31A, resistance R S31B, resistance R S31C, resistance R S31D.
Load circuit comprise fluorescent tube, capacitor C 42, capacitor C 43, inductance L 42, the pulse armature winding T31C corresponding with the pulse secondary winding, with the two secondary winding L41C that boost corresponding to armature winding that boost, lamp tube ends has two filaments, filament has two ends, and capacitor C 43 is connected between an end of two filaments.Inductance L 42, pulse armature winding T31C, the secondary winding L41C that boosts, capacitor C 42 are connected successively, and the series circuit two ends of their formation are connected on the other end of two filaments, have formed like this current circuit.Here this secondary winding L41C that boosts forms step-up transformer jointly with boost secondary winding L41A, the secondary winding L41B that boosts, and the pulse secondary winding T31A in pulse armature winding T31C and push-pull circuit forms pulse transformer by magnet ring.
This low-voltage energy-saving lamp course of work is: after powering on, electric current passes through starting resistance, one of them is open-minded for triode Q41 or triode Q42, electric current flows through boost armature winding L41A or L41B generation voltage, produce high pressure at the secondary winding L41C place of boosting like this, the secondary winding L41C that boosts forms electric current, and electric current passes through capacitor C 42, tube filament, capacitor C 43, another tube filament, inductance L 42, pulse armature winding T31C successively, returns the secondary winding L41C that boosts and forms a current circuit.Impedance before lighting a lamp is lower, pulse transformer armature winding T31C electric current is larger, the pulse transformer magnet ring is higher in degree of depth driven saturated self-oscillation frequency, frequency is away from inductance L 42, the resonance point of capacitor C 43, now the voltage on capacitor C 43 also hangs down and is not enough to light fluorescent tube, filament is in warm-up phase, raising along with filament temperature, resonant circuit impedance also improves, it is saturated that the pulse transformer magnet ring exits the degree of depth gradually, the self-oscillation frequency is close to resonance point gradually, the oscillating voltage of inductance L 42 and capacitor C 43 raises gradually, until fluorescent lamp igniting, light in arc discharge fully.Produce drive current at the pulse secondary winding T31A place of this pulse transformer in addition, drive respectively the switch of triode Q41 and triode Q42, form like this self-oscillation.
The present embodiment electricity-saving lamp has adopted two triodes of current drives push-pull circuit, and electric current is more easily controlled, can not increase power consumption and produce large ripple voltage, noise, and circuit is balance more.Adopt in addition resonance to light a lamp, reduced the number of turn and the voltage between layers of transformer wire bag, improved reliability and the volume of transformer, also reduced cost.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more been used the terms such as booster circuit, common base high-frequency oscillating circuits, the secondary winding that boosts, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (5)
1. a low-voltage energy-saving lamp, by current rectifying and wave filtering circuit, push-pull circuit and load circuit connect and compose, push-pull circuit comprises the booster circuit consisted of two primary coils that boost, and the common base high-frequency oscillating circuits formed by two triodes and electric capacity, be connected with the pulse secondary winding that drives two triodes on the common base of common base high-frequency oscillating circuits, it is characterized in that: described load circuit comprises fluorescent tube, capacitor C 43, inductance L 42, the pulse armature winding T31C corresponding with the pulse secondary winding, with the two secondary winding L41C that boost corresponding to armature winding that boost, inductance L 42, pulse armature winding T31C, the secondary winding L41C that boosts connects successively, described fluorescent tube has two filaments, capacitor C 43 is connected between two filament one ends, inductance L 42, the series circuit that pulse armature winding T31C and the secondary winding L41C that boosts form is connected between the other end of two filaments.
2. low-voltage energy-saving lamp according to claim 1, two armature windings that boost that it is characterized in that described booster circuit are respectively boost armature winding L41A and the armature winding L41B that boosts, the boost end of armature winding L41A and the end of the armature winding L41B that boosts intersects, this joining is connected with the current rectifying and wave filtering circuit input, two triodes and the electric capacity of described common base high-frequency oscillating circuits are respectively triode Q41, triode Q42, capacitor C 41, the collector electrode of triode Q41 is connected with the other end of the armature winding L41A that boosts, the collector electrode of triode Q42 is connected with the other end of the armature winding L41B that boosts, described capacitor C 41 is connected between the collector electrode of triode Q41 and triode Q42, the base stage of triode Q41 and triode Q42 is connected respectively on the two ends of pulse secondary winding T31A, the emitter of triode Q41 and triode Q42 intersects, this joining is connected with the output of current rectifying and wave filtering circuit.
3. low-voltage energy-saving lamp according to claim 2, is characterized in that being connected with starting resistance between current rectifying and wave filtering circuit input and triode Q41 base stage, and this starting resistance consists of four resistance mutually arranged side by side.
4. according to the described low-voltage energy-saving lamp of claim 2 or 3, it is characterized in that Opposite direction connection has diode D31 between triode Q41 base stage and emitter, between triode Q42 base stage and emitter, Opposite direction connection has diode D32.
5. low-voltage energy-saving lamp according to claim 1, it is characterized in that described boost secondary winding L41C with also be in series with capacitor C 42 between tube filament is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320443933.9U CN203378127U (en) | 2013-07-23 | 2013-07-23 | Low-voltage energy-saving lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320443933.9U CN203378127U (en) | 2013-07-23 | 2013-07-23 | Low-voltage energy-saving lamp |
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| CN203378127U true CN203378127U (en) | 2014-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428977A (en) * | 2013-07-23 | 2013-12-04 | 宁波凯耀电器制造有限公司 | Low voltage energy saving lamp |
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- 2013-07-23 CN CN201320443933.9U patent/CN203378127U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428977A (en) * | 2013-07-23 | 2013-12-04 | 宁波凯耀电器制造有限公司 | Low voltage energy saving lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG KAIYAO INTELLIGENT LIGHTING SCIENCE + TEC Free format text: FORMER OWNER: NINGBO KLITE ELECTRICAL APPLIANCE MANUFACTURING CO., LTD. Effective date: 20140916 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315800 NINGBO, ZHEJIANG PROVINCE TO: 314400 JIAXING, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140916 Address after: 314400, Jianshan District, Zhejiang, Haining Province, listening to tide Road, No. 12 Patentee after: Zhejiang Kai Yao intelligent lighting Science and Technology Ltd. Address before: 315800 Zhejiang city of Ningbo province Beilun Science Park Hebei Dapu Road No. 5 Patentee before: Ningbo Klite Electrical Appliance Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20160723 |