CN112003259A - Durable bidirectional voltage suppression device - Google Patents
Durable bidirectional voltage suppression device Download PDFInfo
- Publication number
- CN112003259A CN112003259A CN202010860075.2A CN202010860075A CN112003259A CN 112003259 A CN112003259 A CN 112003259A CN 202010860075 A CN202010860075 A CN 202010860075A CN 112003259 A CN112003259 A CN 112003259A
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- China
- Prior art keywords
- voltage
- suppression device
- doped
- type region
- circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001629 suppression Effects 0.000 title claims abstract description 19
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 18
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 37
- 230000001052 transient effect Effects 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 description 10
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/044—Physical layout, materials not provided for elsewhere
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
Abstract
The invention discloses a durable bidirectional voltage suppression device which comprises a transient voltage suppressor and a shell, wherein the transient voltage suppressor is arranged in an inner cavity of the shell and comprises a voltage stabilizing circuit and a switch circuit, one end of the voltage stabilizing circuit is connected with a power supply, and the other end of the voltage stabilizing circuit is connected with the switch circuit. The voltage stabilizing circuit adopts the two-way voltage stabilizing diodes which are formed by connecting the cathodes of the two voltage stabilizing diodes in series, the two-way voltage stabilizing diodes work by utilizing the characteristic that a breakdown region of a PN junction has stable voltage, and the voltage is almost unchanged in a certain current range and shows the voltage stabilizing characteristic when the voltage is in reverse breakdown, so that the voltage stabilizing circuit has the function of inhibiting the two-way voltage.
Description
Technical Field
The invention belongs to the field of circuit protection, and particularly relates to a durable bidirectional voltage suppression device.
Background
As we use more electronic devices in daily life, we are more and more dependent on overvoltage protection devices as they can protect our devices from voltage peaks and surges. Transient overvoltages are typically caused by inductive or capacitive switching circuits that can release sudden high voltage spikes.
The traditional voltage protection device generally adopts a Crowbar electronic protection circuit (Crowbar) transient suppressor, and the Crowbar device and the circuit effectively generate short circuit when reaching trigger voltage, and can be used for protecting the circuit or load from the influence of transient overvoltage. A disadvantage of such a circuit protection device is that such a short circuit may cause the circuit fuse or circuit breaker to operate, and although the load is protected from overvoltage, it cannot protect the power supply, thus blowing the fuse of the power supply. Thus, the transient protection load generated by such a short-circuited power supply may be larger than the event that triggered it.
Disclosure of Invention
To overcome the deficiencies of the prior art, the problem to be solved by the present invention is to provide a robust bi-directional voltage suppression device.
In order to solve the technical problems, the invention adopts the following technical scheme: a durable bidirectional voltage suppression device comprises a transient voltage suppressor and a shell, wherein the transient voltage suppressor is arranged in an inner cavity of the shell and comprises a voltage stabilizing circuit and a switch circuit, one end of the voltage stabilizing circuit is connected with a power supply, and the other end of the voltage stabilizing circuit is connected with the switch circuit.
Further, the voltage stabilizing circuit comprises two voltage stabilizing diodes, and the two voltage stabilizing diodes are connected in series through a negative electrode and a negative electrode to form a bidirectional voltage stabilizing diode.
Furthermore, the bidirectional voltage stabilizing diode is a crystalline silicon wafer comprising a first doped P-type region, a first doped N-type region, a second doped P-type region and a second doped N-type region, and the first doped P-type region and the second doped P-type region are respectively located on two sides of the first doped N-type region and the second doped N-type region.
Further, the switch circuit comprises a transistor, a solid-state relay and a switch, one end of the transistor is connected with one end of the solid-state relay, the other end of the transistor is connected with the bidirectional voltage stabilizing diode, and the other end of the solid-state relay is connected with a load circuit.
Further, the alarm device also comprises a heat radiator and an alarm which are arranged in the inner cavity of the shell, and a warning lamp which is arranged on the outer wall of the shell.
Further, the radiator is a cooling fan, and the radiator supplies power for direct-current voltage.
Further, the alarm is a buzzer alarm, and the buzzer alarm is powered by direct-current voltage.
Further, the signal lamp is an LED indicator lamp, and the LED indicator lamp supplies power for direct current voltage.
Further, the casing includes incoming line port and outlet terminal, the incoming line port is located the one end of casing, the outlet terminal is located the other end of casing.
Furthermore, one surface of the shell is provided with a heat dissipation hole.
The invention has the beneficial effects that:
the solid-state relay is used as an automatic switch for opening and closing a circuit, the solid-state relay does not have mechanical parts, the solid-state device completes the contact function, the solid-state relay can work in the environment of high impact and vibration because no moving part exists, and the advantages of high reliability, good durability, automatic power supply recovery and the like of the solid-state relay are determined due to the inherent characteristics of components forming the solid-state relay.
The voltage stabilizing circuit adopts the two-way voltage stabilizing diodes which are formed by connecting the cathodes of the two voltage stabilizing diodes in series, the two-way voltage stabilizing diodes work by utilizing the characteristic that a breakdown region of a PN junction has stable voltage, and the voltage is almost unchanged in a certain current range and shows the voltage stabilizing characteristic when the voltage is in reverse breakdown, so that the voltage stabilizing circuit has the function of inhibiting the two-way voltage.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a front view of an embodiment of the present invention.
FIG. 3 is a diagram of a housing port in accordance with an embodiment of the present invention.
Fig. 4 is a diagram of a heat dissipation fan according to an embodiment of the invention.
Fig. 5 is a circuit diagram of an embodiment of the invention.
Fig. 6 is an internal structure view of a bidirectional zener diode.
Wherein: the circuit comprises a shell 1, a wire inlet port 2, a heat dissipation hole 3, a warning lamp 4, an alarm 5, a wire outlet port 6, a bidirectional voltage stabilizing diode 71, a transistor 72, a solid-state relay 73, a switch 74, a power supply 75, a load circuit 76, a first doped P-type region 91, a first doped N-type region 92, a second doped N-type region 93 and a second doped P-type region 94.
Detailed description of the preferred embodiments
The present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The invention provides a durable bidirectional voltage suppression device which comprises a transient voltage suppressor and a shell 1, wherein the transient voltage suppressor is arranged in an inner cavity of the shell 1 and comprises a voltage stabilizing circuit and a switch circuit, one end of the voltage stabilizing circuit is connected with a power supply 75, and the other end of the voltage stabilizing circuit is connected with the switch circuit.
The voltage stabilizing circuit comprises two voltage stabilizing diodes, and the two voltage stabilizing diodes are connected in series through a negative electrode and a negative electrode to form a bidirectional voltage stabilizing diode 71.
When the voltage is in a normal state, the current passing through the bidirectional voltage stabilizing diode 71 is very small, so that the transistor 72 is cut off, the solid state relay 73 is in a conducting state, and the warning lamp 4 is turned on; when a certain original voltage is higher than a normal state value, the current passing through the bidirectional voltage stabilizing diode 71 is large, so that the transistor 72 is saturated, the solid-state relay 73 cuts off the input circuit, and the effect of protecting the power circuit 75 and the load circuit 76 is achieved, at the moment, the alarm 5 gives an alarm, the heat dissipation fan 8 starts to dissipate heat, and the warning lamp 4 lights a red light; when the voltage returns to normal, the transistor 72 is cut off, the solid-state relay 73 is in a conducting state, the alarm 5 stops giving an alarm, the heat dissipation fan 8 stops dissipating heat, and the warning lamp 4 is turned on.
In one embodiment, the bidirectional zener diode is a crystalline silicon wafer including a first doped P-type region 91, a first doped N-type region 92, a second doped P-type region 93 and a second doped N-type region 94, and the first doped P-type region 91 and the second doped P-type region 93 are respectively located at two sides of the first doped N-type region 92 and the second doped N-type region 94. The characteristic that a breakdown region of a PN junction has stable voltage is utilized, and the voltage is almost unchanged in a certain current range and shows the voltage-stabilizing characteristic when reverse breakdown occurs, so that the voltage-stabilizing circuit has the function of bidirectional voltage suppression.
In one embodiment, the switching circuit includes a transistor 72, a solid-state relay 73, and a switch 74, wherein one end of the transistor 72 is connected to one end of the solid-state relay 73, the other end is connected to the zener diode 71, and the other end of the solid-state relay 73 is connected to a load circuit 76. The solid-state relay 73 is a novel non-contact switch device which is composed of solid-state electronic components, and can achieve the purpose of connecting and disconnecting a circuit in a non-contact and non-spark manner by utilizing the switching characteristics of the electronic components.
In one embodiment, the alarm device further comprises a heat sink 8 and an alarm 5 which are mounted in the inner cavity of the housing 1, and a warning lamp 4 which is mounted on the outer wall of the housing 1. When the solid-state relay 73 is in the cut-off state, the warning lamp 4 is turned on, the radiator starts to radiate heat, the alarm sounds a buzzer, when the solid-state relay 73 is in the conducting state, the warning lamp 4 is turned on, the radiator 8 stops radiating heat, and the alarm 5 stops sounding.
In one embodiment, the heat sink 8 is a heat dissipation fan, and the heat sink is powered by a dc voltage. The cooling fan is a DC cooling fan with 2W power and has the advantages of low power consumption and good heat dissipation.
In one embodiment, the alarm 5 is a buzzer, which is powered by a dc voltage. The alarm sound intensity of the buzzer alarm can reach 80 decibels at most, and the buzzer alarm can fully play an alarm role.
In one embodiment, the warning light 4 is an LED indicator light, and the LED indicator light supplies power for direct current voltage. The indicator light 4 can emit green and red lights, when the green light is on, the solid-state relay 73 is in a conducting state, and when the red light is on, the solid-state relay 73 is in a disconnecting state.
In an embodiment, the housing is provided with an incoming line port 2 and an outgoing line port 6, the incoming line port 2 is located at one end of the housing 1, and the outgoing line port 6 is located at the other end of the housing 1. The incoming line port 2 is connected with a power circuit, and the outgoing line port 6 is connected with a load circuit.
In one embodiment, the housing 1 has heat dissipation holes 3 formed on one surface thereof. The heat sink 8 and the heat dissipation holes 3 are both the durable bidirectional voltage suppression device for providing heat dissipation.
It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this disclosure.
Claims (10)
1. A durable bidirectional voltage suppression device is characterized by comprising a transient voltage suppressor and a shell (1), wherein the transient voltage suppressor is arranged in an inner cavity of the shell (1), the transient voltage suppressor comprises a voltage stabilizing circuit and a switch circuit, one end of the voltage stabilizing circuit is connected with a power supply (75), and the other end of the voltage stabilizing circuit is connected with the switch circuit.
2. The robust bi-directional voltage suppression device of claim 1, wherein said regulation circuit comprises two zener diodes connected in series with a negative terminal to form a bi-directional zener diode (71).
3. The robust bi-directional voltage suppression device of claim 1 or 2, wherein said bi-directional zener diode is a crystalline silicon wafer comprising a first doped P-type region, a first doped N-type region, a second doped P-type region, and a second doped N-type region, said first doped P-type region and said second doped P-type region being disposed on either side of said first doped N-type region and said second doped N-type region, respectively.
4. The robust bi-directional voltage suppression device of claim 2, wherein the switching circuit comprises a transistor (72), a solid state relay (73), and a switch (74), the transistor (72) having one end connected to one end of the solid state relay (73) and the other end connected to the diac (71), the other end of the solid state relay (73) connected to a load circuit (76).
5. The robust bi-directional voltage suppression device of claim 1 or 2, further comprising a heat sink (8) and alarm (5) mounted in an interior cavity of the housing (1) and a warning light (4) mounted on an exterior wall of the housing (1).
6. The robust bi-directional voltage suppression device of claim 5, wherein said heat sink (8) is a heat sink fan, said heat sink (8) supplying DC voltage.
7. The robust bi-directional voltage suppression device according to claim 5, wherein said alarm (5) is a buzzer siren powered by a DC voltage.
8. The robust bi-directional voltage suppression device of claim 5, wherein the warning light (4) is an LED indicator light that provides power for DC voltage.
9. A robust bi-directional voltage suppression device as claimed in claim 1 or claim 2, wherein said housing (1) has an inlet port (2) and an outlet port (6), said inlet port (2) being located at one end of said housing (1) and said outlet port (6) being located at the other end of said housing (1).
10. A durable bi-directional voltage suppression device according to claim 1 or 2, characterized in that said housing (1) is vented with heat vents (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860075.2A CN112003259A (en) | 2020-08-24 | 2020-08-24 | Durable bidirectional voltage suppression device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010860075.2A CN112003259A (en) | 2020-08-24 | 2020-08-24 | Durable bidirectional voltage suppression device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112003259A true CN112003259A (en) | 2020-11-27 |
Family
ID=73471398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010860075.2A Pending CN112003259A (en) | 2020-08-24 | 2020-08-24 | Durable bidirectional voltage suppression device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112003259A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06197462A (en) * | 1992-12-24 | 1994-07-15 | Honda Lock Mfg Co Ltd | Over-discharge preventive circuit for storage battery |
| CN103887783A (en) * | 2012-12-20 | 2014-06-25 | 海洋王（东莞）照明科技有限公司 | Overvoltage protection circuit |
| CN204578059U (en) * | 2015-04-20 | 2015-08-19 | 四川汇源光通信有限公司 | A kind of ac current source overvoltage crowbar |
| JP2015211602A (en) * | 2014-04-30 | 2015-11-24 | 株式会社ホトニクス | Surge protector |
| CN105186478A (en) * | 2015-08-20 | 2015-12-23 | 北京燕东微电子有限公司 | Transient voltage suppressor |
| CN105322500A (en) * | 2015-11-24 | 2016-02-10 | 深圳市捷先数码科技股份有限公司 | M-Bus protector with self-recovery function |
| CN108023343A (en) * | 2016-11-04 | 2018-05-11 | 德昌电机(深圳)有限公司 | Electronic circuit, integrated circuit, electric machine assembly and application apparatus |
| CN210120398U (en) * | 2020-01-16 | 2020-02-28 | 四川富肯斯科技有限公司 | Linear voltage-stabilizing input overvoltage protection circuit |
-
2020
- 2020-08-24 CN CN202010860075.2A patent/CN112003259A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06197462A (en) * | 1992-12-24 | 1994-07-15 | Honda Lock Mfg Co Ltd | Over-discharge preventive circuit for storage battery |
| CN103887783A (en) * | 2012-12-20 | 2014-06-25 | 海洋王（东莞）照明科技有限公司 | Overvoltage protection circuit |
| JP2015211602A (en) * | 2014-04-30 | 2015-11-24 | 株式会社ホトニクス | Surge protector |
| CN204578059U (en) * | 2015-04-20 | 2015-08-19 | 四川汇源光通信有限公司 | A kind of ac current source overvoltage crowbar |
| CN105186478A (en) * | 2015-08-20 | 2015-12-23 | 北京燕东微电子有限公司 | Transient voltage suppressor |
| CN105322500A (en) * | 2015-11-24 | 2016-02-10 | 深圳市捷先数码科技股份有限公司 | M-Bus protector with self-recovery function |
| CN108023343A (en) * | 2016-11-04 | 2018-05-11 | 德昌电机(深圳)有限公司 | Electronic circuit, integrated circuit, electric machine assembly and application apparatus |
| CN210120398U (en) * | 2020-01-16 | 2020-02-28 | 四川富肯斯科技有限公司 | Linear voltage-stabilizing input overvoltage protection circuit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20201127 |