CN217010710U - Power supply assembly for neon lamp - Google Patents

Abstract

The utility model discloses a power supply assembly for a neon lamp, which comprises a rectifying and filtering module, a self-oscillation half-bridge driving module, a power half-bridge module, a passive bias module and a voltage transformation module which are electrically connected in sequence, wherein the voltage transformation module is arranged at the output end of the power supply assembly, is electrically connected with the neon lamp and supplies power to the neon lamp; the rectifying and filtering module is arranged at the input end of the power supply assembly and is externally connected with alternating current. The utility model is beneficial to enlarging the voltage range of the alternating current externally connected with the neon lamp, thereby leading the neon lamp to have better applicability and further being beneficial to prolonging the working stability and the working life of the neon lamp.

Description

Power supply assembly for neon lamp

Technical Field

The utility model relates to the technical field of circuit hardware, in particular to a power supply assembly for a neon lamp.

Background

Neon lamps are widely used in daily life as a lamp with both lighting and decoration functions. The power supply assembly for neon lamp will affect the stability of neon lamp operation and even directly affect the service life of neon lamp. Particularly, in order to expand the voltage range of the alternating current externally connected with the neon lamp, the neon lamp has better applicability, and the working stability and the service life of the neon lamp are further favorably prolonged.

Therefore, there is a need for a power supply assembly that can facilitate the extension of the ac voltage range externally connected to neon lights.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a power supply assembly for a neon lamp, which is beneficial to expanding the voltage range of alternating current externally connected with the neon lamp.

In order to solve the technical problem, the utility model discloses a power supply assembly for neon lamps, which comprises a rectifying and filtering module, a self-oscillation half-bridge driving module, a power half-bridge module, a passive bias module and a voltage transformation module which are electrically connected in sequence, wherein,

the voltage transformation module is arranged at the output end of the power supply assembly, is electrically connected with the neon lamp and supplies power to the neon lamp;

the rectifying and filtering module is arranged at the input end of the power supply assembly and is externally connected with alternating current.

Therefore, the power supply assembly for the neon lamp is beneficial to expanding the range of alternating current voltage externally connected with the neon lamp, so that the neon lamp has better applicability, and is further beneficial to prolonging the working stability and the working life of the neon lamp.

As an alternative implementation, in the present invention, the rectifying and filtering module includes a bridge circuit.

As an optional implementation manner, in the present invention, the rectification filter module includes a capacitor filter circuit.

As an alternative embodiment, in the present invention, the self-oscillating half-bridge driving module is provided with a time base chip.

As an alternative embodiment, in the present invention, the power half-bridge module is provided with a half-bridge driver.

As an optional embodiment, in the present invention, the passive bias module is provided with a MOS transistor, wherein the MOS transistor is electrically connected to an output terminal of the half-bridge driver.

In an alternative embodiment, in the present invention, two MOS transistors are provided, and are electrically connected to two output terminals of the half-bridge driver, respectively.

As an optional implementation manner, in the present invention, the voltage transformation module is provided with a first transformer, wherein two ends of a primary coil of the first transformer are electrically connected to one MOS transistor, respectively, and two ends of a secondary coil of the first transformer are electrically connected to two ends of the neon lamp, respectively.

As an optional implementation manner, in the present invention, the voltage transformation module is provided with a second transformer, two ends of a primary coil of the second transformer are electrically connected with one MOS transistor respectively, the second transformer is provided with two secondary coils, wherein,

two ends of the first secondary coil are respectively electrically connected with two ends of the neon lamp;

one end of the second secondary coil is grounded, and the other end of the second secondary coil is electrically connected with the input end of the half-bridge driver.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a power supply assembly for a neon light according to an embodiment of the present invention;

FIG. 2 is a circuit schematic of a specific embodiment of the present invention;

fig. 3 is a circuit schematic of another embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The embodiment of the utility model discloses a power supply assembly for neon lamps, which comprises a rectifying and filtering module, a self-oscillation half-bridge driving module, a power half-bridge module, a voltage transformation module and a passive bias module which are sequentially and electrically connected, wherein,

the passive bias module is arranged at the output end of the power supply assembly, is electrically connected with the neon lamp and supplies power to the neon lamp;

the rectification filtering module is arranged at the input end of the power supply assembly and is externally connected with alternating current.

In the embodiment of the utility model, external alternating current can be input into the power supply assembly through the rectifying and filtering module and sequentially passes through the self-oscillation half-bridge driving module, the power half-bridge module, the voltage transformation module and the passive bias module which are electrically connected to supply power to the neon lamp which is electrically connected. The rectifying and filtering module is used for rectifying and filtering alternating current input from the input end of the power supply assembly; the self-oscillation half-bridge driving module is used for driving the power half-bridge module based on the electric signal processed by the rectifying and filtering module; the transformation module is used for adjusting the voltage for supplying power to the neon lamp to be matched with the working voltage of the neon lamp; the passive bias module acts to input an excitation signal to the neon lamp for starting. By arranging the functional modules, the input end of the power supply assembly can be externally connected with alternating current with a wide voltage range (specifically, the alternating current can be 100V to 240V), so that the neon lamp can normally work.

Therefore, the power supply assembly for the neon lamp is beneficial to expanding the range of alternating current voltage externally connected with the neon lamp, so that the neon lamp has better applicability, and is further beneficial to prolonging the working stability and the working life of the neon lamp.

Optionally, as shown in fig. 2, the rectifying and filtering module includes a bridge circuit DB 1. The bridge circuit DB1 may rectify the input electric signal.

Optionally, as shown in fig. 2, the rectifying and filtering module includes a capacitor filtering circuit (in fig. 2, the capacitor C4 is a filtering capacitor in the capacitor filtering circuit). The capacitance filter circuit can carry out filtering processing on the input electric signals, and is favorable for the stability of the signals output by the module.

Optionally, as shown in fig. 2, the self-oscillating half-bridge drive module is provided with a time base chip U4. The time base chip U4 is used to time the power half-bridge module based on the electrical signal input to the self-oscillating half-bridge driving module and to send a driving signal to the power half-bridge module according to the period of the electrical signal, so that the power half-bridge module is started. Further alternatively, the time-base chip U4 may be an NE555 type IC.

In some embodiments of the utility model, the power half-bridge module is provided with a half-bridge driver U1, as shown in fig. 2 or fig. 3. The half-bridge driver U1 is used to send a drive signal to the transformer module, causing the transformer module to start. Further alternatively, the half-bridge driver U1 may be an IC of the type IR 2153.

Further, as shown in fig. 2, the passive bias module is provided with MOS transistors (in fig. 2, MOS transistors Q1 and Q2), wherein the MOS transistors are electrically connected to the output end of the half-bridge driver U1. The MOS tube is used as a switching transistor and is used for controlling the voltage transformation module which is electrically connected.

Further, as shown in fig. 2 or fig. 3, two MOS transistors (in fig. 2, a MOS transistor Q1 and a MOS transistor Q2, and in fig. 3, a MOS transistor Q1 and a MOS transistor Q4) are provided, and are respectively electrically connected to two output terminals of the half-bridge driver U1. The two MOS tubes respectively work on two half-wave periods of alternating current.

Alternatively, as shown in fig. 2, the transforming module is provided with a first transformer T1, wherein two ends of the primary coil of the first transformer T1 are electrically connected to one MOS transistor, and two ends of the secondary coil of the first transformer T1 are electrically connected to two ends (two OUT ends in fig. 2) of the neon lamp. The two MOS transistors Q1, Q2 work on two half-wave periods of the alternating current respectively, and accordingly, the first transformer T1 is turned on the corresponding two half-wave periods respectively, so that the power supply assembly supplies power to the neon lamp.

Alternatively, as shown in fig. 3, the transforming module is provided with a second transformer T1, two ends of the primary coil of the second transformer T1 are electrically connected to one MOS transistor (i.e. Q1 and Q4 in fig. 3), respectively, the second transformer T1 is provided with two secondary coils, wherein,

two ends of the first secondary coil are respectively and electrically connected with two ends (two OUT ends in figure 3) of the neon lamp;

one end of the second secondary winding 5T is grounded, and the other end is electrically connected to the input terminal of the half-bridge driver U1.

In the second transformer T1, the electrical signal inputted by the second secondary winding 5T to the input terminal of the half-bridge driver U1 may be used as a feedback signal, based on which the half-bridge driver may respond when the power supply of the second transformer T1 to the neon lamp is abnormal (e.g., when the voltage is too large), specifically, the electrical signal transmission to the voltage transformation module may be cut off by turning off the MOS transistor, so as to cut off the power supply to the neon lamp, thereby playing a role in protecting the neon lamp.

Further optionally, as shown in fig. 3, a feedback electrical signal transmission circuit including an optocoupler U2, a capacitor C7, a capacitor E3, resistors R17 to R20, a transistor Q1, and a diode D12 may be further disposed between the second secondary winding 5T and the half-bridge driver U1.

Finally, it should be noted that: the power supply assembly for neon lamp disclosed in the embodiment of the present invention is only disclosed as a preferred embodiment of the present invention, and is only used for illustrating the technical solution of the present invention, not limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (9)

1. A power supply module for neon lamp is characterized in that the power supply module comprises a rectifying and filtering module, a self-oscillation half-bridge driving module, a power half-bridge module, a passive bias module and a voltage transformation module which are electrically connected in turn,

the voltage transformation module is arranged at the output end of the power supply assembly, is electrically connected with the neon lamp and supplies power to the neon lamp;

the rectifying and filtering module is arranged at the input end of the power supply assembly and is externally connected with alternating current.

2. The power supply assembly for neon according to claim 1, wherein said rectifying and filtering module comprises a bridge circuit.

3. The power supply assembly for neon according to claim 1, wherein said rectifying filter module comprises a capacitive filter circuit.

4. The power supply assembly for neon according to claim 1, wherein said self-oscillating half-bridge driving module is provided with a time base chip.

5. The power supply assembly for neon according to claim 1, wherein said power half-bridge module is provided with a half-bridge driver.

6. The power supply assembly for neon according to claim 5, wherein said passive bias module is provided with MOS transistor, wherein said MOS transistor is electrically connected to the output of said half bridge driver.

7. The power supply module for neon according to claim 6, wherein said MOS tubes are provided with two, respectively electrically connected to two output terminals of said half bridge driver.

8. The power supply module for neon according to claim 7, wherein said transforming module is provided with a first transformer, wherein both ends of a primary coil of said first transformer are electrically connected with one said MOS tube, respectively, and both ends of a secondary coil of said first transformer are electrically connected with both ends of said neon lamp, respectively.

9. The power supply module for neon according to claim 7, wherein said transforming module is provided with a second transformer, both ends of the primary coil of said second transformer are electrically connected with one said MOS tube, respectively, said second transformer is provided with two secondary coils, wherein,

two ends of the first secondary coil are respectively and electrically connected with two ends of the neon lamp;

one end of the second secondary coil is grounded, and the other end of the second secondary coil is electrically connected with the input end of the half-bridge driver.

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