CN214429244U

CN214429244U - Power supply purifier

Info

Publication number: CN214429244U
Application number: CN202120537092.2U
Authority: CN
Inventors: 王毅勇; 梅滔; 任智俊; 蒋守诚; 茹军辉; 沈晨; 励凯锋
Original assignee: Turn Link Electronic Co ltd
Current assignee: Turn Link Electronic Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-10-19
Anticipated expiration: 2031-03-15

Abstract

The utility model discloses a power supply purifier comes to save surge current and slow release through electric capacity, controls operating current through piezo-resistor to adopt EMI filtering technique. The utility model discloses surge protection, power filtering, lightning protection function have.

Description

Power supply purifier

Technical Field

The utility model relates to a power technical field specifically is a power supply purifier.

Background

In the prior art, a thermistor, a thyristor parallel resistor, a relay parallel power resistor, or the like is generally used as an anti-surge circuit. By adopting the simple thermistor, although the impedance of the power input loop can be increased, cold start surge, lightning stroke and operation overvoltage can be effectively prevented, the power efficiency can be reduced, and meanwhile, the surge current of hot start is large, the power is damaged and the like. The thyristor parallel resistor is adopted, so that high and low temperature impact performance is good, but a driving winding is required to be additionally arranged for driving in control, and loss is large in a medium and high power supply; the relay is connected with the power resistor in parallel, so that the startup surge current can be completely limited, but the power device cannot be damaged by huge surge current caused by lightning stroke and operation overvoltage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a power supply purifier is provided, it has surge protection, power filtering, lightning protection function.

In order to solve the above technical problem, the present invention provides a power supply purifier, which comprises a live wire end, a zero line end, a ground end, a first output end, a second output end, a first capacitor, a second capacitor, a first voltage dependent resistor, a second voltage dependent resistor, a third voltage dependent resistor, a fourth voltage dependent resistor, a fifth voltage dependent resistor, a sixth voltage dependent resistor and a common mode inductor, wherein the first end of the first capacitor is coupled to the zero line end, the second end of the first capacitor is coupled to one end of the first voltage dependent resistor, the other end of the first voltage dependent resistor is coupled to the ground end, one end of the third voltage dependent resistor is coupled to the zero line end, the other end of the second voltage dependent resistor is coupled to the second end of the first capacitor, the common mode inductor has a first coil and a second coil, the first coil is connected in series between the zero line end and the first output end, the second coil is connected in series between the second end of the first capacitor and the second output end, the first end of the second capacitor is coupled with the first output end, the second end of the second capacitor is coupled with one end of the fourth piezoresistor, the other end of the fourth piezoresistor is coupled with the grounding end, one end of the fifth piezoresistor is coupled with the first output end, the other end of the fifth piezoresistor is coupled with the second output end, one end of the sixth piezoresistor is coupled with the first output end, one end of the sixth piezoresistor is coupled with the second output end, and the other end of the sixth piezoresistor is coupled with the grounding end.

Preferably, the power supply purifier further comprises a triode, a first LED lamp, a second LED lamp and a third LED lamp, wherein the base electrode of the triode is respectively coupled with the negative electrodes of the grounding end and the third LED lamp, the positive electrode of the third LED lamp is coupled with the positive electrode of the first LED lamp, the negative electrode of the first LED lamp is coupled with the collector electrode of the triode, the positive electrode of the first LED lamp is coupled with the second output end, the emitter electrode of the triode is respectively coupled with the negative electrodes of the zero line end and the second LED lamp, the positive electrode of the second LED lamp is coupled with the fire wire end, the first LED lamp emits red light when powered on, the second LED lamp emits green light when powered on, and the third LED lamp emits yellow light when powered on.

After the structure more than adopting, compared with the prior art, the utility model, have following advantage:

the utility model discloses a power supply purifier has surge protection, power filtering, lightning protection and lightning protection indicating function, can provide clean pollution-free indoor power.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention;

fig. 2 is a schematic circuit diagram of another part of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the power supply purifier of this embodiment includes a live wire end L, a zero line end N, a ground end G, a first output end 100, a second output end 200, a first skip pin 300, a second skip pin 400, a third skip pin 500, a fourth skip pin, a first capacitor 1, a second capacitor 2, a first varistor 3, a second varistor 4, a third varistor 5, a fourth varistor 6, a fifth varistor 7, a sixth varistor 8, and a common mode inductor 9, wherein a first end of the first capacitor 1 is coupled to the zero line end N, a second end of the first capacitor 1 is coupled to one end of the first varistor 3, another end of the first varistor 3 is coupled to the ground end G, one end of the third varistor 5 is coupled to the zero line end N, another end of the third varistor 5 is coupled to the ground end G, one end of the second varistor 4 is coupled to the zero line end N, the other end of the second voltage dependent resistor 4 is coupled to the second end of the first capacitor 1, the common mode inductor 9 has a first coil and a second coil, the first coil is connected in series between the zero line terminal N and the first output terminal 100, the second coil is connected in series between the second end of the first capacitor 1 and the second output terminal 200, the first end of the second capacitor 2 is coupled to the first output terminal 100, the second end of the second capacitor 2 is coupled to one end of the fourth voltage dependent resistor 6, the other end of the fourth voltage dependent resistor 6 is coupled to the ground terminal G, one end of the fifth voltage dependent resistor 7 is coupled to the first output terminal 100, the other end of the fifth voltage dependent resistor 7 is coupled to the second output terminal 200, one end of the sixth voltage dependent resistor 8 is coupled to the first output terminal 100, one end of the sixth voltage dependent resistor 8 is coupled to the second output terminal 200, the other end of the sixth voltage dependent resistor 8 is coupled to the ground terminal G, the first capacitor 1 and the second capacitor 2 can store and slowly release surge current, the first and

second hop pins

300 and 400 are coupled to the first output 100 and the third and

fourth hop pins

500 and 600 are coupled to the second output 200.

The power purification system of the embodiment adopts an EMI filtering mode, wherein the impedance of the power line is considered, the mismatching of the signal source and the load impedance is allowed, and the power purification system is integrated, so that the surge protection performance and the strongest stability are greatly improved.

The lightning protection aspect of the power supply purification system of the embodiment is performed by adopting the piezoresistor, when the applied voltage reaches or exceeds the voltage-sensitive voltage value, the piezoresistor value is reduced sharply and is conducted rapidly, so that the working current is increased, and therefore elements and loading equipment in the circuit are effectively protected from being damaged due to overvoltage.

It is most important in the power supply purifier of this embodiment that it does not damage any of the components in the power supply purification system, does not require periodic testing and maintenance, and does not result in a voltage on the reference ground. The power supply is realized to be essentially in a leap in a real sense.

As shown in fig. 2, the power supply purifier further includes a triode 10, a first LED lamp 11, a second LED lamp 12, and a third LED lamp 13, wherein the base of the triode 10 is coupled to the negative terminals of the ground terminal G and the third LED lamp 13, the positive terminal of the third LED lamp 13 is coupled to the positive terminal of the first LED lamp 11, the negative terminal of the first LED lamp 11 is coupled to the collector of the triode 10, the positive terminal of the first LED lamp 11 is coupled to the second output terminal 200, the emitter of the triode 10 is coupled to the negative terminals of the zero line terminal N and the second LED lamp 12, the positive terminal of the second LED lamp 12 is coupled to the fire line terminal L, the first LED lamp 11 emits red light when powered on, the second LED lamp 12 emits green light when powered on, and the third LED lamp 13 emits yellow light when powered on.

The second LED lamp 12 is on to represent that the power supply is normal, the third LED lamp 13 is on to represent that the grounding is normal, and the first LED lamp 11 is on to represent that the lightning protection is invalid, so that the power supply purifier of the embodiment has a lightning protection indicating function.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention, but should not be construed as limiting the claims, and the present invention is not limited to the above-described embodiments, but may be modified in various ways. In summary, all changes that can be made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims

1. A power supply purifier is characterized by comprising a live wire end (L), a zero line end (N), a grounding end (G), a first output end (100), a second output end (200), a first capacitor (1), a second capacitor (2), a first piezoresistor (3), a second piezoresistor (4), a third piezoresistor (5), a fourth piezoresistor (6), a fifth piezoresistor (7), a sixth piezoresistor (8) and a common mode inductor (9), wherein the first end of the first capacitor (1) is coupled with the zero line end (N), the second end of the first capacitor (1) is coupled with one end of the first piezoresistor (3), the other end of the first piezoresistor (3) is coupled with the grounding end (G), one end of the third piezoresistor (5) is coupled with the zero line end (N), the other end of the third piezoresistor (5) is coupled with the grounding end (G), one end of a second piezoresistor (4) is coupled with a zero line end (N), the other end of the second piezoresistor (4) is coupled with a second end of a first capacitor (1), a common mode inductor (9) is provided with a first coil and a second coil, the first coil is connected between the zero line end (N) and a first output end (100) in series, the second coil is connected between a second end of the first capacitor (1) and a second output end (200) in series, a first end of a second capacitor (2) is coupled with the first output end (100), a second end of the second capacitor (2) is coupled with one end of a fourth piezoresistor (6), the other end of the fourth piezoresistor (6) is coupled with a grounding end (G), one end of a fifth piezoresistor (7) is coupled with the first output end (100), the other end of the fifth piezoresistor (7) is coupled with the second output end (200), one end of a sixth piezoresistor (8) is coupled with the first output end (100), one end of the sixth piezoresistor (8) is coupled to the second output terminal (200), and the other end of the sixth piezoresistor (8) is coupled to the ground terminal (G).

2. The power supply purifier according to claim 1, further comprising a triode (10), a first LED lamp (11), a second LED lamp (12) and a third LED lamp (13), the base of triode (10) is coupled with the negative pole of earthing terminal (G) and third LED lamp (13) respectively, the positive pole of third LED lamp (13) is coupled with the positive pole of first LED lamp (11), the negative pole of first LED lamp (11) is coupled with the collecting electrode of triode (10), the positive pole of first LED lamp (11) is coupled with second output (200), the projecting pole of triode (10) is coupled with the negative pole of zero line end (N) and second LED lamp (12) respectively, the positive pole of second LED lamp (12) is coupled with live wire end (L), first LED lamp (11) emits red light when circular telegram, second LED lamp (12) give off green glow when circular telegram, third LED lamp (13) give off yellow light when circular telegram.