CN2738521Y - Low-voltage AC/DC two-purpose fluorescent lamp ballast controller - Google Patents
Low-voltage AC/DC two-purpose fluorescent lamp ballast controller Download PDFInfo
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- CN2738521Y CN2738521Y CN 200420092106 CN200420092106U CN2738521Y CN 2738521 Y CN2738521 Y CN 2738521Y CN 200420092106 CN200420092106 CN 200420092106 CN 200420092106 U CN200420092106 U CN 200420092106U CN 2738521 Y CN2738521 Y CN 2738521Y
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Abstract
The utility model discloses a low-voltage AC/DC two-purpose fluorescent lamp ballast controller, which comprises an access circuit of a non-polar power source, a multifunctional control circuit of pulse width modulation, an independent excitation push-pull type power drive circuit, a transformer and a hot start lighting circuit which are sequentially connected, the low-voltage AC/DC two-purpose fluorescent lamp ballast controller also comprises a constant current control circuit, the input and output of the constant current control circuits are respectively formed by connecting with the transformer and the multifunctional control circuit of pulse width modulation. The connection between the access circuit of a non-polar power source and an external power requires taking account of the positive and the negative polars, particularly DC power supply; the ballast controllers, such as, the multifunctional control circuit of pulse width modulation, the constant current control circuits, etc. provides the desired electric current and powe and satisfies minor starting current, stable operating current, preferable low temperature start-up character, long life and non-stroboflash within a range of 8-36V. The utility model can be used for compact and separate mode driven florescent lamps, solar energy lighting lamps, emergency lamps, field military illumination lamps, illumination lamps for vehicles and boats, illumination lamps for machine processing, etc.
Description
Affiliated technical field
The utility model relates to a kind of electric lighting device, relates in particular to a kind of low pressure AC/DC fluorescent lamp ballasting controller.
Background technology
Adopt low-voltage alternating current power supply (less than the safe voltage of 36Vac) still not have similarly report at present for the ballast (inverter) of fluorescent lamp operation, the ballast of lighting a lamp for fluorescent lamp starting with low-voltage direct (less than 36Vdc), its working method adopts the auto-excitation type vibration more, transformer boosts, cold start-up is also lighted fluorescent tube, this mode of operation is for startup and the illumination of diameter greater than the fluorescent tube of T2, exist more shortcoming: the one, starting current is very big, be generally about 2 times of operating current, this just means the capacity that must strengthen power supply (as storage battery), thereby increased the volume of power supply, also improved use cost simultaneously, the 2nd, with high pressure with fluorescent tube hard breakdown under the situation of cold state (being cold start-up), this has not only increased the volume of transformer secondary output high pressure winding, improved the direct cost of product, and the more important thing is that cold start-up fluorescent tube and illumination move, the life-span of fluorescent tube is shortened greatly, luminous efficiency is also low, the 3rd, the operating current instability, change greatly with voltage fluctuation, the 4th, poor performance at low temperatures, cold-starting is unreliable, the 4th, there is not controlled function, just an inverter.
Summary of the invention
The purpose of this utility model is to provide a kind of starting current of the fluorescent lamp that can make low-voltage power supply less relatively, and operating current is stable, and luminous efficiency is higher and the life-span is long, and low-temperature startup performance is better, the low pressure AC/DC fluorescent lamp ballasting controller that volume is little.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of low pressure AC/DC fluorescent lamp ballasting controller comprises nonpolarity power access circuit, pulse-width modulation type multifunctional control circuit, separate excitation push-pull type power driving circuit, transformer, warm start lamp circuit, constant-current control circuit.The input of a nonpolarity power access circuit is connected with the interchange of a low pressure (less than 36V) or the output of DC power supply, the output of nonpolarity power access circuit and a pulse-width modulation type multifunctional control circuit, a separate excitation push-pull type power driving circuit, a transformer, a warm start lamp circuit are linked in sequence, and constant-current control circuit and transformer and pulse-width modulation type multifunctional control circuit are connected to form.It is characterized in that: described nonpolarity power access circuit is a full-bridge type rectification circuit that is connected into by four rectifier diodes, described pulse-width modulation type multifunctional control circuit is one and is core with pulsewidth modulated intergrated circuit (PWM IC) and is connected with peripheral circuit and forms frequency converting and preheating start-up circuit (being the oscillation inverter circuit) respectively, the pulse-width modulated output signal attenuator circuit, constant-current control circuit (being the current/voltage negative-feedback circuit), described transformer is a high frequency transformer, described warm start lamp circuit be one by inductor, fluorescent tube, capacitor interconnects and the square wave of conversion transformer output is lighted luminous sinusoidal wave resonance circuit for the driving fluorescent lamp pipe.
The beneficial effects of the utility model are: 1, fluorescent lamp low pressure AC/DC ballast controller is to be regardless of positive-negative polarity ground to connect arbitrarily with being connected of interchange or DC power supply; this can not cause circuit not work or damage because of connection is improper, thereby obtains effectively protective circuit and give to install and use bringing convenience.2, adopted the frequency converting and preheating start-up circuit in the circuit; make fluorescent tube preheating under the frequency conversion state can not be subjected to the impact of too big electric current; it is impaired to protect filament to be difficult for effectively; prolong the useful life of fluorescent tube; and light easily; do not need transformer that very high voltage is provided, just can under normal temperature even situation, normally start at low temperature-20 ℃.3, circuit is provided with constant-current control circuit, give pulsewidth modulated intergrated circuit (PWM IC) to change the pulsewidth of its output signal by curtage sampling and negative feedback after treatment, thereby when guaranteeing (or the significantly) variation on a large scale of voltage or electric current, still keep exchange or electric current that DC power supply provides constant substantially, make the working stability of lamp, not glimmering has prolonged the life-span of fluorescent lamp simultaneously again.4, in the pulse-width modulation type multifunctional control circuit, also contain a frequency converting and preheating start-up circuit, it and constant-current circuit acting in conjunction, the starting current of having guaranteed fluorescent lamp is slightly larger than operating current, except that the life-span that can prolong lamp, also can reduce the capacity of power supply (as storage battery) greatly, reduced volume reduces use cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified
Fig. 1 is the technical scheme theory diagram of the utility model preferred embodiment
Fig. 2 is the utility model pulse-width modulation type multifunctional control circuit internal structure block diagram
Fig. 3 is the basic circuit diagram of the utility model preferred embodiment
Fig. 4 is the utility model oscillating capacitance CX schematic network structure
Fig. 5 is the utility model oscillation resistance RX schematic network structure
Among the figure, each element circuit, components and parts and associated contact are illustrated with tabular form, please respectively referring to shown in table 1～table 3.
Table 1
| Code name | Title |
| N1 | Nonpolarity power access circuit |
| N2 | The pulse-width modulation type multifunctional control circuit |
| N3 | Separate excitation push-pull type power driving circuit |
| Tr | Transformer |
| N4 | The warm start lamp circuit |
| N5 | Constant-current control circuit |
| N2a | The frequency converting and preheating start-up circuit |
| N2b | Signal attenuation circuit |
| PWM IC | Pulsewidth modulated intergrated circuit |
| Cx | The oscillating capacitance network |
| Rx | The oscillation resistance network |
Table 2
| Code name | Title |
| R1～R10 | Resistor |
| C1、C6、C9 | Electrolytic capacitor |
| C2～C5 | Capacitor |
| C7～C8 | Capacitor |
| D1～D5 | Diode |
| Q1～Q2 | Power MOSFET |
| RL1 | Filament |
| RL2 | Filament |
| LP | Fluorescent lamp |
| Lo | Inductor |
| n1、n2 | The primary winding |
| n3 | Transformer secondary output high pressure winding |
| n4 | Transformer secondary output low pressure winding |
| FU | Fast acting fuse |
| U | (8～36V) exchange or dc power supply external low pressure |
Table 3
| Code name | Title | Code name | Title |
| A、B | Nonpolarity power access circuit input | G1、G2 | The grid of Q1, Q2 |
| V+ | Nonpolarity power access circuit direct-flow positive voltage output | 0 | The centre cap of elementary winding n1 of Tr and n2 |
| GND1 | Nonpolarity power access circuit ground end (common port) | GND3 | Separate excitation push-pull type power driving circuit ground end (common port) |
| Vcc | PWM IC direct-flow positive voltage leading-in end | GND4 | The ground end (common port) of Tr secondary high pressure winding n3 |
| GND2 | PWM multifunctional control circuit ground end (common port) | GND5 | The ground end (common port) of Tr secondary low-voltage winding n4 |
| E | The tie point of R2, R3 | ||
| F | The tie point of R4, R5 |
Embodiment
Referring to accompanying drawing, Fig. 1 is the technical scheme theory diagram of the utility model preferred embodiment, low-voltage alternating-current or DC fluorescent lamp ballast controller, comprise a nonpolarity power access circuit (N1), a pulse-width modulation type multifunctional control circuit (N2), a separate excitation push-pull type power driving circuit (N3), a transformer (Tr), a warm start lamp circuit (N4), a constant-current control circuit (N5), except that N5, the first five person is linked in sequence, the input of constant-current control circuit (N5) is connected with transformer (Tr), output is connected with pulse-width modulation type multifunctional controller (N2), pulse-width modulation type multifunctional controller (N2) also comprises a pulsewidth modulated intergrated circuit (PWM IC), a frequency converting and preheating start-up circuit (N2a), a signal attenuation circuit (N2b), PWM IC respectively with frequency converting and preheating start-up circuit (N2a), signal attenuation circuit (N2b) connects (seeing shown in Figure 2).
Fig. 3 is the basic circuit diagram of the utility model preferred embodiment, a nonpolarity power access circuit (N1) connects into the full-bridge type rectification circuit by diode D1～D4, the tie point of D1 and D2 is connected with input (A) by fast acting fuse (FU), the tie point of D3 and D4 directly is connected with input (B), the input A of N1 and be connected the not polarity of B with power supply (8～36V exchanges or direct voltage source) output, especially to the anode of DC power supply and negative terminal respectively can with A, B is corresponding to be connected, also can with B, A is corresponding to be connected, the output of N1 (V+) is through electrolytic capacitor (C1) filtering and draw end (Vcc) with PWM IC direct-flow positive voltage respectively, the centre cap (O) of the elementary winding of transformer (Tr) (n1) and (n2) is connected, the output of N1 ground end (GND1) respectively with the ground end (GND2) of pulse-width modulation type multifunctional control circuit (N2), the ground end (GND3) of separate excitation push-pull type power driving circuit (N3), the secondary high pressure winding (n3) of transformer (Tr) and the ground end (GND4) of warm start lamp circuit (N4), the secondary low-voltage winding (n4) of Tr and the ground end (GND5) of constant-current control circuit (N5) connect; In the pulse-width modulation type multifunctional control circuit (N2), the signal of PWM IC output is connected with power MOSFET (Q1), the grid (G1) of (Q2), (G2) in the separate excitation push-pull type power driving circuit through tie point E, the F of (R2) of signal attenuation circuit (N2b) and (R3), (R4) and (R5) respectively; The drain electrode of Q1, Q2 is connected with two elementary windings (n1), (n2) of transformer (Tr) respectively; The two ends of the secondary high pressure winding (n3) of Tr are connected with two inputs of warm start lamp circuit (N4) respectively, and two outputs of the secondary low-voltage winding (n4) of Tr are connected with two inputs of constant-current control circuit (N5) respectively; The output of N5 is connected with the input of PWM IC; Frequency converting and preheating start-up circuit (N2a) comprises oscillating capacitance (Cx), two networks of oscillation resistance (Rx), and Cx is connected with two vibration inputs of PWM IC respectively with Rx; Warm start lamp circuit (N4) is connected in series mutually and is formed by inductor (Lo), lamp (RL1), capacitor (C4), lamp (RL2), capacitor (C5).
Described pulsewidth modulated intergrated circuit (PWM IC) model is the integrated circuit of TL494 series or the pulsewidth modulated intergrated circuit (PWM IC) that can replace with it.
Described frequency converting and preheating start-up circuit (N2a) is the oscillation inverter circuit of a fluorescent lamp (LP) when preheating, lights its frequency of oscillation of back at fluorescent lamp (LP) and remains unchanged substantially.
Resistor (R2) in the described signal attenuation circuit (N2b) and (R4), different different with the watt level of fluorescent lamp according to the height of low-voltage alternating-current or direct voltage when design, the span of the two is difference also, is generally R2=R4＞0 ohm.
Described warm start lamp circuit (N4) is an electric current that filament can be provided before lamp is lighted can become the high-frequency and high-voltage square wave of transformer (Tr) output the sine-wave current of corresponding driving lamp works simultaneously again in the whole service process of lamp a circuit.
Fig. 4 is the utility model oscillating capacitance (Cx) schematic network structure, CX is the external oscillating capacitance of PWM IC, it can be a capacitor (C7) or (C8), also can be by different capacitor (C7) of two performances and the loop that is connected in parallel and forms (C8).
Fig. 5 is the utility model oscillation resistance (RX) schematic network structure, and RX is the external oscillation resistance loop of PWM IC, and it is formed by resistor (R9) and the resistor that is connected in series (R10), the electrolytic capacitor (C9) that are connected in parallel on the R9 two ends.In this circuit, oscillation resistance (RX) is an equivalent resistance that changes with the fluorescent tube warm, and element or circuit that other can be equivalent or similar with it are also alternative.
In Fig. 3, also have resistor (R1, R6, R7, R8) and capacitor (C2, C3, C6) and diode (D5), their annexations in circuit, clear understandable for the personnel in relevant technologies field, seldom give unnecessary details at this.
Circuit structure novelty of the present utility model, controlled function is perfect, and starting current is less, particularly ℃ also can start working stability, luminous efficiency height, advantage such as the life-span is long at low temperature-20.Can be suitable for the application of various occasions, (8～36Vac) power supplys are work down both to have can be used on low-voltage alternating-current, can be used on low-voltage direct (8～36Vdc again, as 12Vdc, 24Vdc etc.) power supply work down, both can combine and make low pressure compact electronic energy-saving lamp (being LVCFL), and can combine with non-compact fluorescent lamp tubes such as compact fluorescent lamp tube or straight light tubes again and make split type low pressure AC/DC electronic energy-saving fluorescent with compact fluorescent lamp tube.
Low pressure AC/DC electronic energy-saving fluorescent can be widely used in the illumination of transport facilitys such as aircraft, automobile, boats and ships, also can be used for the processing illumination of lathe and other equipment, also can with the supporting life illumination that is used for indoor and outdoor of generating equipment such as solar cell, be specially adapted to the illumination in the area of the abundant and few electricity of short of electricity of solar energy resources.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique is understandable to its operation principle legibility, can not break away under this situation that is suitable for novel spirit and scope, can also make various conversion or variation, therefore, all technical schemes that are equal to also should belong to this and be suitable for novel category, should be limited by each claim.
Claims (8)
1. low pressure AC/DC fluorescent lamp ballasting controller, it is characterized in that: a nonpolarity power access circuit (N1), a pulse-width modulation type multifunctional control circuit (N2), a separate excitation push-pull type power driving circuit (N3), a transformer (Tr), a warm start lamp circuit (N4) is linked in sequence successively, the input and output side of a constant-current control circuit (N5) is connected with pulse-width modulation type multifunctional control circuit (N2) with transformer (Tr) respectively, the input of described nonpolarity power access circuit (N1) exchanges with external 8～36V or the output of dc power supply (U) is connected in the mode that is regardless of positive-negative polarity, described pulse-width modulation type multifunctional control circuit (N2) contains pulsewidth modulated intergrated circuit (PWM IC), frequency converting and preheating start-up circuit (N2a) and signal attenuation circuit (N2b), the input and output side of described separate excitation push-pull type power driving circuit (N3) respectively with the node (E of signal attenuation circuit (N2b), F) and the elementary winding (n1 of transformer (Tr), n2) be connected to form a separate excitation push-pull type power metal field effect transistor (MOSFET) oscillating circuit, the input of described warm start lamp circuit (N4) and the secondary high pressure winding (n3) of transformer (Tr) are connected and provide the sine wave drive electric current of fluorescent lamp (LP), and the input and output of described constant-current control circuit (N5) are connected and control the width of PWM IC output pulse signal with secondary (n4) of transformer (Tr) with pulsewidth modulated intergrated circuit (PWM IC) input respectively.
2. low pressure AC/DC fluorescent lamp ballasting controller according to claim 1 is characterized in that: described nonpolarity power access circuit is a full-bridge type rectification circuit that is connected to form by four diodes.
3. low pressure AC/DC fluorescent lamp ballasting controller according to claim 1 is characterized in that: the model of described pulsewidth modulated intergrated circuit (PWM IC) is the roughly the same PWM IC series that TL494 is serial or can replace with it.
4. low pressure AC/DC fluorescent lamp ballasting controller according to claim 1 is characterized in that: described frequency converting and preheating start-up circuit (N2a) comprises oscillation resistance network (RX) and oscillating capacitance network (CX).
5. according to claim 1 and the described low pressure AC/DC of claim 4 fluorescent lamp ballasting controller, it is characterized in that: described oscillation resistance network (RX) is connected in parallel by resistor (R9) branch road and a resistor (R10) electrolytic capacitor (C9) series arm and forms, and RX also can constitute with the resistance element or the circuit of equivalence with it.
6. according to claim 1 and the described low pressure AC/DC of claim 4 fluorescent lamp ballasting controller, it is characterized in that: described oscillating capacitance network (CX) is a capacitor (C7) or (C8), also can be by the different capacitor (C7) of two performances and (C8) to be connected in parallel to form.
7. low pressure AC/DC fluorescent lamp ballasting controller according to claim 1, it is characterized in that: described signal attenuation circuit comprises two resistance series arms, one is resistor (R2) and resistor (R3) branch road that is connected in series, and another is the series arm of resistor (R4) and resistor (R5).
8. according to claim 1 and the described low pressure AC/DC of claim 7 fluorescent lamp ballasting controller, it is characterized in that: the relation of described resistor (R2) and resistor (R3) is that R2 equals R3, and the two value of R2 and R3 is zero or greater than zero ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092106 CN2738521Y (en) | 2004-08-24 | 2004-08-24 | Low-voltage AC/DC two-purpose fluorescent lamp ballast controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420092106 CN2738521Y (en) | 2004-08-24 | 2004-08-24 | Low-voltage AC/DC two-purpose fluorescent lamp ballast controller |
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| Publication Number | Publication Date |
|---|---|
| CN2738521Y true CN2738521Y (en) | 2005-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420092106 Expired - Fee Related CN2738521Y (en) | 2004-08-24 | 2004-08-24 | Low-voltage AC/DC two-purpose fluorescent lamp ballast controller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355784A (en) * | 2011-08-31 | 2012-02-15 | 桂林灵川县安华电器厂 | DC-AC electronic ballast |
| CN102711341A (en) * | 2012-06-26 | 2012-10-03 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
| CN106505891A (en) * | 2016-12-31 | 2017-03-15 | 广州市奔创电子科技有限公司 | A kind of vehicle-mounted row plug-in source converter |
| CN111295003A (en) * | 2018-11-21 | 2020-06-16 | 浙江宇视科技有限公司 | Flashing lamp and flashing system |
-
2004
- 2004-08-24 CN CN 200420092106 patent/CN2738521Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102355784A (en) * | 2011-08-31 | 2012-02-15 | 桂林灵川县安华电器厂 | DC-AC electronic ballast |
| CN102711341A (en) * | 2012-06-26 | 2012-10-03 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing and LED (Light Emitting Diode) fluorescent lamp |
| CN102711341B (en) * | 2012-06-26 | 2014-06-18 | 重庆九亿光电仪器有限公司 | Constant current driving power supply without polarity distinguishing |
| CN106505891A (en) * | 2016-12-31 | 2017-03-15 | 广州市奔创电子科技有限公司 | A kind of vehicle-mounted row plug-in source converter |
| CN111295003A (en) * | 2018-11-21 | 2020-06-16 | 浙江宇视科技有限公司 | Flashing lamp and flashing system |
| CN111295003B (en) * | 2018-11-21 | 2021-08-31 | 浙江宇视科技有限公司 | Flashing lamp and flashing system |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |