CN208691212U - A kind of solid-state relay - Google Patents
A kind of solid-state relay Download PDFInfo
- Publication number
- CN208691212U CN208691212U CN201820311180.9U CN201820311180U CN208691212U CN 208691212 U CN208691212 U CN 208691212U CN 201820311180 U CN201820311180 U CN 201820311180U CN 208691212 U CN208691212 U CN 208691212U
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- China
- Prior art keywords
- relay
- circuit
- solid
- drain electrode
- european
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- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 239000003381 stabilizer Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of solid-state relays, including solid-state relay circuit and relay package structure；Solid-state relay circuit are as follows: a high-voltage MOSFET pipe (Q1) is equipped with high-voltage MOSFET pipe output end interpolar protection circuit, drain electrode and the interpolar for being parallel between gate protection circuit, source electrode and drain electrode and being composed in parallel by safety capacitor and varistor and protects and be equipped with rectifier diode between circuit between grid and drain electrode；The relay package structure are as follows: pcb board outer dimension should be consistent with European relay, and the one side of PCB arranges leg, and leg position and European relay leg position, function definition are unanimously；The another side of PCB arranges solid-state relay circuit.The widely used European relay of institute in the current electric system relay protection automatic field of the utility model energy quick replacement, and can reach and improve the actuating of relay circuit behavior time, while evade the various factors for influencing the European relay service life of tradition.
Description
Technical field
The utility model relates to a kind of solid-state relays for electric system relay protection automatic field.
Background technique
The European relay of tradition largely used in electric system relay protection automation equipment is caused due to design feature
Its actuation time will appear the delay situation of several Milliseconds；In addition, the European relay of tradition is due to for electromagnetic and mechanical structure, because
This its processing technology, control of material, action frequency, movement contact arc discharge etc. can all have relatively high crash rate.And
The Configuration Feature of solid-state relay can effectively improve the deficiency of the European relay of tradition.But existing solid-state relay
The problems such as device is due to encapsulation, General design, directly cannot directly replace European relay under existing PCB installation environment
It changes.Therefore it needs to carry out practical application redesign to solid-state relay configuration mode, to meet actual demand.
Utility model content
Technical problem to be solved in the utility model, is just to provide a kind of solid-state relay, and energy quick replacement is current
The widely used European relay of institute in electric system relay protection automatic field, and can reach and improve actuating of relay circuit behavior
Time, while evading the various factors for influencing the European relay service life of tradition.
Above-mentioned technical problem is solved, technical solution used by the utility model is as follows:
A kind of solid-state relay, it is characterized in that: including solid-state relay circuit and relay package structure；
The solid-state relay circuit are as follows: a high-voltage MOSFET pipe (Q1) is equipped with gate protection between grid and drain electrode
The high-voltage MOSFET pipe output end pole composed in parallel by safety capacitor and varistor is parallel between circuit, source electrode and drain electrode
Between protect circuit, drain electrode and interpolar protection circuit between be equipped with rectifier diode；The relay package structure are as follows: outside pcb board
Shape size should be consistent with European relay, and the one side of PCB arranges leg, leg position and European relay leg position, function
Definition is consistent；The another side of PCB arranges solid-state relay circuit.
The gate protection circuit is to be parallel with divider resistance R2, filter capacitor C1 and voltage-stabiliser tube D2 between grid and drain electrode
Three branches.
It describes in more detail as follows:
One high-voltage MOSFET pipe Q1, grid is concatenated resistance R1 input control signal CTL, source electrode meets output cathode OUT
+, drain electrode after two rectifier diode D1 in parallel to output negative pole OUT-；Divider resistance is parallel between grid and drain electrode
R2, filter capacitor C1 and tri- branches of voltage-stabiliser tube D2, drain electrode connect control signal ground potential；Safety is parallel between source electrode and drain electrode
Two branches of capacitor CX1 and varistor RV1；The rectifier diode D1 connects in drain electrode and safety capacitor CX1 and pressure-sensitive electricity
It hinders between two branches of RV1.
Gate protection circuit effect prevents to be filtered to the operation voltage signal for being applied to high-voltage MOSFET tube grid
There is the appearance of too high voltages and reversed overshoot voltage in high-voltage MOSFET tube grid；It is to prevent from using that interpolar, which protects circuit function,
In, exceed high-voltage MOSFET pipe source electrode and leakage due to occurring on outside lead between output end, that is, high-voltage MOSFET pipe source electrode and drain electrode
Transient active and passive signal and the interference signal damage caused by the utility model that pole cannot be born；Rectifier diode effect
To prevent reverse current from flowing to high-voltage MOSFET pipe source electrode by the drain electrode of high-voltage MOSFET pipe.
The utility model has the advantages that
1, the utility model can directly replace the European relay of tradition.
2, due to using solid state electrical components electromagnetic and mechanical component is not present, therefore relative to traditional Europe in the utility model
Formula relay long service life, failure rate are low, quick action, contact arc discharge problem are not present, can also be according to engineering reality
Use environment realizes parameter modification by the modification to component parameter.
Detailed description of the invention
Fig. 1 is the utility model circuit diagram；
Fig. 2 is the utility model PCB construction side view；
Fig. 3 a is one of European relay dimensional drawing；
Fig. 3 b is two (left views of Fig. 3 a) of European relay dimensional drawing.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Fig. 1 is the circuit diagram of the utility model, and control signal CTL is concatenated 100 Ω of the position resistance R1 and is connected to Q1
Set MOSFET pipe IRF640 grid, divider resistance R2 in parallel position 10k Ω, the position filter capacitor C1 between Q1 grid and drain electrode
100nF, voltage-stabiliser tube D2 position 18V, drain electrode connect control signal ground potential.Q1 drain electrode meets the position D1 model MBR20H200CT,
Rectifier diode is simultaneously connected to output negative pole.Q1 source electrode connects the position CX1 safety capacitor to output negative pole, the position RV1 model
S20K230 varistor is in parallel with the position CX1.Q1 source electrode is connecing output just.
Fig. 2 is the PCB construction stereoscopic schematic diagram of the utility model, referring to TE company RX444024C outline dimensional drawing 3a and
Fig. 3 b carries out PCB design.6 needle legs 1 are installed in encapsulation and are installed on 2 bottom PCB, needle leg spatial position and definition with
RX444024C is consistent.The top PCB is that height should be no more than RX444024C shell space envelope after electronic component arranges layer arrangement
Range.
Claims (2)
1. a kind of solid-state relay, it is characterized in that: including solid-state relay circuit and relay package structure；
The solid-state relay circuit are as follows: a high-voltage MOSFET pipe (Q1), grid and drain electrode between be equipped with gate protection circuit,
The high-voltage MOSFET pipe output end interpolar protection composed in parallel by safety capacitor and varistor is parallel between source electrode and drain electrode
Rectifier diode is equipped between circuit, drain electrode and interpolar protection circuit；The relay package structure are as follows: pcb board outer dimension
Should be consistent with European relay, the one side of PCB arranges leg, and leg position and European relay leg position, function define one
It causes；The another side of PCB arranges solid-state relay circuit.
2. solid-state relay according to claim 1, it is characterized in that: the gate protection circuit is between grid and drain electrode
It is parallel with three divider resistance (R2), filter capacitor (C1) and voltage-stabiliser tube (D2) branches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820311180.9U CN208691212U (en) | 2018-03-07 | 2018-03-07 | A kind of solid-state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820311180.9U CN208691212U (en) | 2018-03-07 | 2018-03-07 | A kind of solid-state relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208691212U true CN208691212U (en) | 2019-04-02 |
Family
ID=65875727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820311180.9U Expired - Fee Related CN208691212U (en) | 2018-03-07 | 2018-03-07 | A kind of solid-state relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208691212U (en) |
-
2018
- 2018-03-07 CN CN201820311180.9U patent/CN208691212U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190402 Termination date: 20200307 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |