CN203326601U - Freewheeling unit with fault-tolerant function - Google Patents
Freewheeling unit with fault-tolerant function Download PDFInfo
- Publication number
- CN203326601U CN203326601U CN2013204202501U CN201320420250U CN203326601U CN 203326601 U CN203326601 U CN 203326601U CN 2013204202501 U CN2013204202501 U CN 2013204202501U CN 201320420250 U CN201320420250 U CN 201320420250U CN 203326601 U CN203326601 U CN 203326601U
- Authority
- CN
- China
- Prior art keywords
- diode
- freewheeling
- fault
- utility
- model
- 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 - Lifetime
Links
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a safe and reliable freewheeling unit with a fault-tolerant function. The freewheeling unit comprises a diode and a freewheeling diode, the diode and the freewheeling diode are reversely connected in series and are packaged in a package body, and wire outlet ends are arranged on the package body. The freewheeling unit with a fault-tolerant function is composed of the diode and the freewheeling diode and cannot be reversely switched on due to reverse wiring, thus better protecting elements from loss. Element burnout and short circuit faults caused by reverse wiring in a direct-current operation circuit are effectively controlled. An integrated design makes the freewheeling unit convenient to use and improves the reliability.
Description
Technical field
The utility model relates to a kind of afterflow unit, especially a kind of afterflow unit with fault tolerance.
Background technology
In DC control circuit, coil, by electric current the time, can produce induced electromotive force at its two ends at present.When current vanishes, its induced electromotive force can produce reverse voltage to the element in circuit.Can cause component wear in operation circuit (as damaged the contact of relay).
In order to address the above problem; can be at coil two ends parallel connection fly-wheel diode; during current vanishes in flowing through coil, the loop work done that the induced electromotive force that coil produces forms by fly-wheel diode and coil consumes, thereby has protected the safety of element in the operation circuit.But, most critical be that the polarity of fly-wheel diode can not wrong, otherwise will cause short circuit to cause more serious accident.
The utility model content
The utility model provides a kind of safe and reliable afterflow unit with fault tolerance.
Realize a kind of afterflow unit with fault tolerance of the utility model purpose, comprise a diode and a fly-wheel diode; Described diode and fly-wheel diode are differential concatenations, and described diode, fly-wheel diode are packaged in packaging body, on described packaging body, are provided with terminal.
Described packaging body is the epoxy encapsulation body.
The beneficial effect of a kind of afterflow unit with fault tolerance of the present utility model is as follows:
A kind of afterflow unit with fault tolerance of the present utility model, be comprised of a diode and fly-wheel diode, because of reverse wiring, and by oppositely not conducting, the better loss of protection component.Effectively controlled in DC control circuit, because reverse wiring causes, burnt out element and short trouble.Integrated design, easy to use, improve reliability.
The accompanying drawing explanation
Fig. 1 is a kind of structural representation with afterflow unit of fault tolerance of the present utility model.
Fig. 2 is a kind of work schematic diagram with afterflow unit of fault tolerance of the present utility model.
Embodiment
As shown in Figure 1, 2, a kind of afterflow unit with fault tolerance of the present utility model, comprise a diode D2 and a sustained diode 1; Described diode D2 and sustained diode 1 are differential concatenations, and described diode D2, sustained diode 1 are packaged in packaging body 5, on described packaging body 5, are provided with terminal.
Described packaging body 5 is the epoxy encapsulation body.
The advantage of a kind of afterflow unit with fault tolerance of the present utility model is as follows:
A kind of afterflow unit with fault tolerance of the present utility model, be comprised of a diode and fly-wheel diode, because of reverse wiring, and by oppositely not conducting, the better loss of protection component.Effectively controlled in DC control circuit, because reverse wiring causes, burnt out element and short trouble.Integrated design, easy to use, improve reliability.
Embodiment recited above is described preferred implementation of the present utility model; not scope of the present utility model is limited; design under spiritual prerequisite not breaking away from the utility model; various distortion and improvement that the common engineers and technicians in this area make technical solutions of the utility model, all should fall in the definite protection range of claims of the present utility model.
Claims (2)
1. the afterflow unit with fault tolerance, is characterized in that: comprise a diode and a fly-wheel diode; Described diode and fly-wheel diode are differential concatenations, and described diode, fly-wheel diode are packaged in packaging body, on described packaging body, are provided with terminal.
2. a kind of afterflow unit with fault tolerance according to claim 1, it is characterized in that: described packaging body is the epoxy encapsulation body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204202501U CN203326601U (en) | 2013-07-16 | 2013-07-16 | Freewheeling unit with fault-tolerant function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204202501U CN203326601U (en) | 2013-07-16 | 2013-07-16 | Freewheeling unit with fault-tolerant function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326601U true CN203326601U (en) | 2013-12-04 |
Family
ID=49665896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204202501U Expired - Lifetime CN203326601U (en) | 2013-07-16 | 2013-07-16 | Freewheeling unit with fault-tolerant function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326601U (en) |
-
2013
- 2013-07-16 CN CN2013204202501U patent/CN203326601U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202333771U (en) | Power supply protection circuit and engineering machinery | |
| CN106655145B (en) | A kind of battery power feeds electric voltage reverse-connection protection circuit | |
| CN203398780U (en) | Vehicle-mounted anti-surge-voltage protection device | |
| CN203278215U (en) | Secondary overvoltage protector for current transformer | |
| CN102306933A (en) | Short-circuit current limiter with high reliability and method thereof | |
| CN203326601U (en) | Freewheeling unit with fault-tolerant function | |
| CN112510742A (en) | High voltage ride through module of energy storage system and control method thereof | |
| CN203645584U (en) | Positive-negative rotating control circuit of three-phase AC motor | |
| CN203415942U (en) | Fault signal processing circuit | |
| CN202111614U (en) | Trigger circuit used for thyristor and fast bypass apparatus | |
| CN102780198B (en) | Current foldback circuit | |
| CN103681094B (en) | A kind of vacuum circuit breaker control circuit and system | |
| CN207967925U (en) | A kind of lightning protection circuit of alarm control system | |
| CN202435029U (en) | Battery reverse connection prevention circuit | |
| CN202495749U (en) | Power source protection circuit | |
| CN201138648Y (en) | Leakage protective circuit breakers in A type | |
| CN210323866U (en) | Simple PLC output isolation circuit module | |
| CN201483292U (en) | Safety protection circuit device for machine tool | |
| CN204967677U (en) | PMSM power steady voltage protection control system | |
| CN204372280U (en) | A kind of automobile-used DC electromagnetic valve and the components and parts protective gear that is connected thereof | |
| CN203014348U (en) | A motor protector | |
| CN203027133U (en) | Starting circuit based on quasi-resonance controller | |
| CN217406512U (en) | Solid-state relay circuit | |
| CN204290290U (en) | A kind of motor driver circuit detected with controllable silicon | |
| CN214480527U (en) | Electrical limiting circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131204 |
|
| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: BEIJING QINGHUA HUALI ELECTRICAL AUTOMATION TECHNOLOGY Co.,Ltd. Person in charge of patentsThe principal of patent Document name: Notice of Termination of Patent Rights |
|
| DD01 | Delivery of document by public notice |