TW201415952A - Common module structure of sensing type fluorescent lamp ballast - Google Patents

Abstract

There is provided a common module structure of sensing type fluorescent lamp ballast, which includes: a power factor correction circuit connected to an external power source; a control circuit connected to the power factor correction circuit; and an output circuit connected to the control circuit and an external sensing type fluorescent lamp. Between the output circuit and the sensing type fluorescent lamp, there is provided a resonance circuit composed of a variable inductor and at least one variable capacitor. By changing the capacitance of the variable capacitor and the inductance of the variable inductor, the output power of the ballast can be adjusted. A variable voltage boosting capacitor is connected in parallel between the power factor correction circuit and the control circuit. The variable voltage boosting capacitor can boost each working voltage of various control circuits. In addition, the power factor correction circuit is combined with an adjustable transformer. The adjustable transformer can respectively convert the working voltages of the external power source into different reference voltages for being detected by the power factor correction circuit, and the power factor correction circuit adjusts the power factor of each of the different working voltages.

Description

Common module structure of inductive fluorescent lamp ballast

The invention relates to a common module structure of an inductive fluorescent lamp ballast, in particular to a common module structure which can simplify assembly process, reduce component management and production cost.

In general inductive fluorescent lamp products, there are usually different related components (such as couplers and ballasts) with different power-sized inductive fluorescent lamps; as seen in the application of DC power supply The structure and appearance of the fluorescent lamp ballast circuit are as shown in Figures 1 and 2, and the circuit board 5 mainly comprises: a power factor correction circuit 51 connected to the external DC power source 4, and a connection of the power factor correction a control circuit 52 of the circuit 51, and a portion connecting the control circuit 52 and the output circuit 53 of the external inductive fluorescent lamp 3; wherein the power factor correction circuit 51 is further combined with a transformer TR1, which can The DC power source 4 is respectively converted into a reference voltage for the power factor correction circuit 51 and a working voltage required by a power factor correction circuit 51, and the power factor correction circuit 51 adjusts the power factor of the operating voltage according to the setting; In addition, a boost capacitor C5 is connected in parallel between the power factor correction circuit 51 and the control circuit 52. (The boosting capacitor C52 can be connected in parallel by a plurality of capacitors), and the operating voltage of the control circuit 52 can be increased by charging and discharging the boosting capacitor C52; and between the output circuit 53 and the electrodeless lamp 3 In parallel, a resonant circuit composed of an inductor L53 and a capacitor C53 (which can be connected in series by a plurality of capacitors) is used to trigger the inductive fluorescent lamp 3.

In addition, as shown in FIG. 3, the inductive fluorescent lamp ballast circuit structure applied to the AC power supply mainly includes: an electromagnetic wave interference preventing circuit 64 connected to the external AC power source 40, and a connection on the circuit board 6. The rectifying circuit 65 of the anti-electromagnetic interference circuit 64, a power factor correcting circuit 61 connected to the rectifying circuit 65, a control circuit 62 connected to the power factor correcting circuit 61, and a connecting the control circuit 62 and the external electrodeless lamp 3 The output circuit 63 and the like; wherein the power factor correction circuit 61 is further combined with a transformer TR2, which converts the voltage outputted by the rectifier circuit 65 into a reference voltage for the power factor correction circuit 61 to detect. And a working voltage required by the power factor correction circuit 61, the power factor correction circuit 61 adjusts the power factor of the working voltage according to the setting; and a boost capacitor C62 is connected in parallel between the power factor correction circuit 61 and the control circuit 62. (The boost capacitor C62 can be plural The operation and voltage of the control circuit 62 can be increased by charging and discharging the boosting capacitor C62; and the inductor 33 is connected in series with the inductive fluorescent lamp 3 by the inductor L63. A resonant circuit composed of a capacitor C63 (which can be connected in series by a plurality of capacitors) is used to trigger the inductive fluorescent lamp 3.

The above-mentioned various stabilizer development and design methods are respectively designed according to different power induction fluorescent lamp products, so that a variety of different specifications of ballast settings are generated, and various ballasts have different circuit board plans. As well as the components, as a result, a large number of complicated components and boards cause serious load on management and production preparation.

In order to improve this phenomenon, some manufacturers have designed a ballast with similar characteristics as a fixed combination circuit structure, and matched some high-precision components, so that it can be applied to many different specifications but similar characteristics. Lamps (for example: 50~80w inductive fluorescent lamps use a lower power ballast; 80~360w inductive fluorescent lamps use another higher power ballast), so that the commonly used stabilizers can be used. The specifications of the device have been greatly reduced, and the number of development and management of various components and boards has been reduced, which can reduce the cost of component management to a certain extent.

However, even with this, the design planning with different boards and the use of different components can't be avoided, making the overall design development cost difficult to further reduce, and the management of its components is not economical. Room for improvement.

In view of the above-mentioned shortcomings of the ballast and its circuit board design, the inventors have studied and improved the shortcomings of these shortcomings, and finally the present invention has been produced.

The main purpose of the present invention is to provide a common module structure of an inductive fluorescent lamp ballast, which can reduce the overall management and production cost through the sharing of the circuit board and all the components, thereby improving the economic efficiency of the overall production.

Another object of the present invention is to provide a common module structure of an inductive fluorescent lamp ballast, which can produce a product suitable for various specifications by a single component assembly and assembly method, and has simplified assembly. Process to enhance the efficiency of production efficiency.

In order to achieve the above objects and effects, the technical means adopted by the present invention include: a power factor correction circuit connected to an external power source; a control circuit connected to the power factor correction circuit; and a connection between the control circuit and an external inductive firefly An output circuit of the light lamp, and a resonant circuit composed of at least one variable inductor and at least one variable capacitor is disposed between the output circuit and the inductive fluorescent lamp, by changing a capacitance value of the variable capacitor And the inductance value of the variable inductor can adjust the output power of the ballast.

According to the above structure, a variable boosting capacitor is connected in parallel between the power factor correction circuit and the control circuit, and the variable boosting capacitor respectively boosts the operating voltages of the different control circuits.

According to the above structure, the power factor correction circuit is combined with an adjustable transformer that converts the operating voltage of the external power source into different reference voltages for detecting by the power factor correction circuit, and the power factor correction The different operating voltages required by the circuit are used by the power factor correction circuit to adjust the power factor of each of the different operating voltages.

According to the above structure, the external power source is a DC voltage.

According to the above structure, the external power source is an AC voltage, and a rectifying unit is disposed between the AC power source and the power factor correction unit, and the AC voltage is converted into a DC voltage by the rectifying unit, and then output. To the power factor correction unit.

According to the above structure, an electromagnetic interference filtering unit is further disposed between the AC power source and the rectifying unit, so as to filter out electromagnetic wave interference in the AC power source.

In order to achieve a more specific understanding of the above objects, effects and features of the present invention, the following figures are illustrated as follows:

As shown in FIG. 4 and FIG. 5, the structure of the first embodiment of the present invention is mainly provided on a circuit board 1 with a power factor correction circuit 11 connected to an external DC power source 4 and a power factor correction circuit connected thereto. a control circuit 12 of 11 and an output circuit 13 connecting the control circuit 12 and the external inductive fluorescent lamp 3, wherein the power factor correction circuit 11 is combined with an adjustable transformer VTR1, the adjustable transformer VTR1 is external to the external The voltages of the DC power source 4 are respectively converted into different reference voltages for the power factor correction circuit 11 and the different operating voltages required by the power factor correction circuit 11, so that the power factor correction circuit 11 can adjust the output of different operations. a power factor of the voltage; and a variable boosting capacitor VC12 is connected in parallel between the power factor correction circuit 11 and the control circuit 12, and the variable boosting capacitor VC12 respectively boosts different outputs of the output of the power factor correction circuit 11 Voltage for the control circuit 12; A variable resonant circuit composed of at least one variable inductor VL13 and at least one variable capacitor VC13 is disposed between the output circuit 13 and the inductive fluorescent lamp 3, and the capacitance value of the variable capacitor VC13 is changed. And the inductance value of the variable inductor VL13, the output circuit 13 can be adjusted to trigger the output power of the inductive fluorescent lamp 3.

The invention adopts the design of the variable resonant circuit composed of the adjustable transformer VTR1, the variable boosting capacitor VC12, and the variable inductor VL13 and the variable capacitor VC13, so that the same can be adjusted according to different power requirements. The overall output state of the ballast, so that all the stabilizer structures of different output specifications can share all the components, in addition to reducing the overall management cost of the components, and simplifying the assembly process, reducing production costs and improving economic efficiency. The effect.

Referring to FIG. 6, it can be seen that the structure of the second embodiment of the present invention is mainly provided on a circuit board 2: an electromagnetic interference prevention (EMI) circuit 24 connected to the external AC power source 40, and a connection between the anti-electromagnetic interference a rectifier circuit 25 of the (EMI) circuit 24, a power factor correction (PFC) circuit 21 coupled to the rectifier circuit 25, a control circuit 22 coupled to the power factor correction (PFC) circuit 21, and a control circuit 22 coupled thereto The output circuit 23 of the external inductive fluorescent lamp 3; the anti-electromagnetic interference (EMI) circuit 24 can filter the electromagnetic wave noise in the AC power source 40, and the rectifying circuit 25 can convert the AC power source 40 into a DC power source; In addition, the power factor correction circuit 21 is combined with an adjustable transformer VTR2, and the adjustable transformer VTR2 converts the voltage outputted by the rectifier circuit 25 into different reference voltages respectively detected by the power factor correction circuit 21, and The power factor correction circuit 21 does not need The operating voltage is such that the power factor correction circuit 21 can adjust the power factor of each of the different operating voltages; and a variable boosting capacitor VC22 is connected in parallel between the power factor correcting circuit 21 and the control circuit 22, the variable boosting The capacitor VC22 respectively increases the different operating voltages output by the power factor correction circuit 21 for the control circuit 22; and between the output circuit 23 and the electrodeless lamp 3, at least one variable inductor VL23 is provided. And a variable resonant circuit composed of at least one variable capacitor VC23, by changing the capacitance value of the variable capacitor VC23 and the inductance value of the variable inductor VL23, the output circuit 23 can be adjusted to trigger the inductive fluorescent lamp 3 Output power.

In summary, the common module structure of the inductive fluorescent lamp ballast of the present invention can achieve the effects of simplifying assembly procedures, improving processing efficiency, and reducing component management and overall production cost, which is a novelty and progress. The invention is filed in accordance with the law; however, the above description is only for the preferred embodiment of the present invention, and variations, modifications, alterations or equivalent substitutions are possible in accordance with the technical means and scope of the present invention. It is also within the scope of the patent application of the present invention.

1, 2, 5, 6. . . Circuit board

11, 21, 51, 61. . . Power factor correction circuit

12, 22, 52, 62. . . Control circuit

13, 23, 53, 63. . . Output circuit

24, 64. . . Anti-electromagnetic interference circuit

25, 65. . . Rectifier circuit

3. . . Inductive fluorescent lamp

4. . . DC power supply

40. . . AC power

C52, C62. . . Boost capacitor

C53, C63. . . capacitance

L53, L63. . . inductance

TR1, TR2. . . transformer

VC12, VC22. . . Variable boost capacitor

VC13, VC23. . . Variable capacitance

VL13, VL23. . . Variable inductance

VTR1, VTR2. . . Adjustable transformer

Fig. 1 is a circuit diagram showing the structure of an inductive fluorescent lamp ballast using a DC power supply.

Figure 2 is a schematic view showing the appearance of a possible embodiment of Figure 1.

Figure 3 is a diagram showing the circuit structure of an inductive fluorescent lamp ballast using an AC power supply.

Fig. 4 is a circuit diagram showing the first embodiment of the present invention using a direct current power source.

Figure 5 is a schematic view showing the appearance of a possible embodiment of Figure 4.

Figure 6 is a circuit diagram showing a second embodiment of the present invention using an alternating current power supply.

1. . . Circuit board

11. . . Power factor correction circuit

12. . . Control circuit

13. . . Output circuit

3. . . Inductive fluorescent lamp

4. . . DC power supply

VC12. . . Variable boost capacitor

VC13. . . Variable capacitance

VL13. . . Variable inductance

VTR1. . . Adjustable transformer

Claims (9)

A common module structure of an inductive fluorescent lamp ballast includes:
a power factor correction circuit connecting the external power source;
a control circuit coupled to the power factor correction circuit; and
An output circuit connecting the control circuit and the external inductive fluorescent lamp, and a resonant circuit composed of at least one variable inductor and at least one variable capacitor is disposed between the output circuit and the inductive fluorescent lamp. The output power of the ballast can be adjusted by changing the capacitance value of the variable capacitor and the inductance value of the variable inductor. The common module structure of the inductive fluorescent lamp ballast according to claim 1, wherein a variable boosting capacitor is connected in parallel between the power factor correction circuit and the control circuit, and the variable boosting capacitor is connected. The operating voltages of different control circuits are respectively increased. The common module structure of the inductive fluorescent lamp ballast according to claim 1 or 2, wherein the power factor correction circuit is combined with an adjustable transformer, wherein the adjustable transformer is configured to respectively operate the external power supply Converting to different reference voltages for the power factor correction circuit and different operating voltages required by the power factor correction circuit, and then adjusting the power factor of the different operating voltages by the power factor correction circuit. The common module structure of the inductive fluorescent lamp ballast according to claim 1 or 2, wherein the external power source is a DC voltage. The common module structure of the inductive fluorescent lamp ballast according to claim 3, wherein the external power source is a DC voltage. The common module structure of the inductive fluorescent lamp ballast according to claim 1 or 2, wherein the external power source is an alternating current voltage, and a rectification is provided between the alternating current power source and the power factor correction unit. The unit converts the AC voltage into a DC voltage by the rectifying unit, and then outputs the voltage to the power factor correction unit. The common module structure of the inductive fluorescent lamp ballast according to claim 3, wherein the external power source is an alternating current voltage, and a rectifying unit is disposed between the alternating current power source and the power factor correcting unit. The AC voltage is converted to a DC voltage by the rectifying unit, and then output to the power factor correcting unit. The common module structure of the electrodeless lamp ballast according to claim 6, wherein an electromagnetic interference filtering unit is further disposed between the alternating current power source and the rectifying unit, so as to filter out electromagnetic wave interference in the alternating current power source. The common module structure of the induction lamp ballast according to claim 7, wherein an electromagnetic interference filtering unit is further disposed between the alternating current power source and the rectifying unit, so as to filter out electromagnetic wave interference in the alternating current power source.