CN2824433Y - Solid relay - Google Patents
Solid relay Download PDFInfo
- Publication number
- CN2824433Y CN2824433Y CN 200520106407 CN200520106407U CN2824433Y CN 2824433 Y CN2824433 Y CN 2824433Y CN 200520106407 CN200520106407 CN 200520106407 CN 200520106407 U CN200520106407 U CN 200520106407U CN 2824433 Y CN2824433 Y CN 2824433Y
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- CN
- China
- Prior art keywords
- circuit
- utility
- model
- state relay
- output
- Prior art date
- 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.)
- Expired - Fee Related
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a solid state relay which comprises a control end, an input circuit, an output triggering and processing circuit for controlling the opening and the closing of the relay, a switching device connected in parallel with the output triggering and processing circuit and an output terminal. According to the utility model, the solid state relay also comprises a protection circuit which is connected between the output triggering and processing circuit and the output terminal; furthermore, in the utility model, the protection circuit comprises a safety device. The utility model has the advantage that the arrangement of the protection circuit makes the protection circuit form a broken circuit to stop a large current to pass through other electronic components so as to protect the electronic components when the solid state relay experiences a high current or a load short circuit.
Description
Technical field
The utility model relates to a kind of solid-state relay with protective circuit, and particularly a kind of safety element of protective circuit is the solid-state relay of fuse.
Background technology
There is not current foldback circuit in the solid-state relay of the prior art; therefore; when running into instantaneous large-current processes such as current transients or load short circuits at relay; the electric current of the electronic devices and components by relay inside is far longer than its rated current; therefore; can cause the permanent damages of components and parts, and then relay was lost efficacy.
The utility model content
The purpose of this utility model is to overcome weak point of the prior art, and a kind of solid-state relay with protective circuit is provided.
For achieving the above object, the solid-state relay that the utility model provides comprises control end, input circuit, and the output of control relay folding triggers treatment circuit, triggers treatment circuit switching device and output in parallel with output; According to the utility model, solid-state relay also comprises a protective circuit, and described protective circuit is connected in output and triggers between treatment circuit and the output.
Further, in the utility model, protective circuit comprises a safety device.
The beneficial effects of the utility model are that when the setting of protective circuit made solid-state relay experience big electric current or load short circuits, protective circuit can form and open circuit, and stop big electric current by other electronic devices and components, thereby have protected these electronic devices and components.
Description of drawings
Fig. 1 is the circuit structure block diagram of solid-state relay of the present utility model.
Fig. 2 is the circuit diagram of the solid-state relay in first kind of embodiment of the present utility model.
Embodiment
With reference to Fig. 2, the solid-state relay in first kind of execution mode of the utility model comprises input circuit 201, optical coupler 202, thyristor 203, LED 1, LED2, resistance R 1, R2, R3, capacitor C 1, fuse FUSE, control end CON and output OUT, wherein, LED 1, the LED2 back of connecting with R1, R2 respectively is in parallel with input circuit 201, connects with fuse FUSE after optical coupler 202 and thyristor 203, the filter parallel connection be made up of resistance R 3 and capacitor C 1.
The operation principle of present embodiment is as follows: when input circuit 201 paths; LED 1, the LED2 conducting is also luminous, resistance R 1; R2 plays metering function here; optical coupler 202 receives conducting behind the light that LED sends, and 203 conductings of control thyristor, thereby makes the relay conducting; when load short circuits or when the big electric current of transition is arranged; fuse FUSE will fuse, thereby the output of relay is opened circuit, and so just protect optical coupler 202 and thyristor 203.
Behind fuse failure, change fuse and can make relay recovery work.
Claims (3)
1. a solid-state relay comprises that the output of control end, input circuit, control relay folding triggers treatment circuit, triggers treatment circuit switching device and output in parallel with output; According to the utility model, solid-state relay also comprises a protective circuit, and described protective circuit is connected in output and triggers between treatment circuit and the output.
2. solid-state relay according to claim 1, wherein, described protective circuit comprises a safety device.
3. solid-state relay according to claim 2, wherein, described safety device is a fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106407 CN2824433Y (en) | 2005-08-24 | 2005-08-24 | Solid relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520106407 CN2824433Y (en) | 2005-08-24 | 2005-08-24 | Solid relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2824433Y true CN2824433Y (en) | 2006-10-04 |
Family
ID=37033554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520106407 Expired - Fee Related CN2824433Y (en) | 2005-08-24 | 2005-08-24 | Solid relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2824433Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954237A (en) * | 2019-11-22 | 2020-04-03 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
-
2005
- 2005-08-24 CN CN 200520106407 patent/CN2824433Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954237A (en) * | 2019-11-22 | 2020-04-03 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
| CN110954237B (en) * | 2019-11-22 | 2021-11-30 | 奇瑞汽车股份有限公司 | Engine coolant temperature sensor and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061004 Termination date: 20100824 |