CN105896461A - Protection circuit - Google Patents
Protection circuit Download PDFInfo
- Publication number
- CN105896461A CN105896461A CN201610335512.2A CN201610335512A CN105896461A CN 105896461 A CN105896461 A CN 105896461A CN 201610335512 A CN201610335512 A CN 201610335512A CN 105896461 A CN105896461 A CN 105896461A
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- chip microcomputer
- isolation
- protection circuit
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
Landscapes
- Protection Of Static Devices (AREA)
Abstract
The invention discloses a protection circuit, and relates to the protection circuit capable of preventing a storage battery charge from being damaged by sharp change of an alternating current voltage. The protection circuit is characterized by comprising an isolation power supply voltage transformation circuit (1), an isolation voltage sampling circuit (2), a single chip microcomputer processing circuit (4), a control relay circuit (3) and an alternating current voltage sampling output circuit (5), wherein the isolation power supply voltage transformation circuit (1) and the isolation voltage sampling circuit (2) are connected with the single chip microcomputer processing circuit (4) separately; and the control relay circuit (3) and the alternating current voltage sampling output circuit (5) are also connected with the single chip microcomputer processing circuit (4) separately. The protection circuit has the characteristics of high action response speed under an undervoltage state, a high-precision-isolation alternating current voltage sampling output function, and the like.
Description
Technical field
The present invention relates to a kind of protection circuit, be specifically related to a kind of there is the protection circuit that anti-alternating voltage significantly changes and the battery charger that causes damages.
Background technology
Common overvoltage-undervoltage protector is when voltage pulsation, and reflection of cutting off the electricity supply wants the 1-2 second slowly, it is impossible to play the purpose of protection battery charger.When voltage pulsation to 400V, protector self damages.
Summary of the invention
It is an object of the invention to provide a kind of protection circuit, the feature such as when it has under-voltage movement response speed is fast, the function of the AC voltage sampling output of high accuracy isolation.
In order to solve the problem existing for background technology, the present invention is by the following technical solutions: it comprises insulating power supply transforming circuit 1, isolation voltage sample circuit 2, single-chip microcomputer process circuit 4, control relay circuit 3, AC voltage sampling output circuit 5, insulating power supply transforming circuit 1 processes circuit 4 with single-chip microcomputer respectively with isolation voltage sample circuit 2 and is connected, and control relay circuit 3 processes circuit 4 with single-chip microcomputer the most respectively with AC voltage sampling output circuit 5 and is connected.
Described insulating power supply transforming circuit 1, it it is the input ac voltage step-down transformer that reaches 400V, reliable and stable working power can be provided for protection circuit when alternating voltage is in 100V to 400V voltage pulsation, and common protector is possible to when alternating voltage 400V, and self burns out, described isolation voltage sample circuit 2, it it is a Miniature precision voltage transformer, described single-chip microcomputer processes the microprocessor that circuit 4 is 8 low costs, described AC voltage sampling output circuit 5 is a low voltage pulse signal exported by Single-chip Controlling, its frequency is proportional to the alternating voltage of input, read alternating voltage for other products to provide conveniently.
The present invention has the advantage that: when overvoltage/undervoltage, movement response speed is fast; reach Millisecond cut off the electricity supply thus play protection battery charger function; according to the fluctuation situation intellectual analysis when function of supplying power sending into voltage during power transmission; such that it is able to effectively prevent the damage of battery charger; also providing for the function of the AC voltage sampling output of a high accuracy isolation, access and detection for other products provide conveniently simultaneously.
Accompanying drawing illustrates:
Fig. 1 is present configuration schematic diagram.
Detailed description of the invention
With reference to Fig. 1, it comprises insulating power supply transforming circuit 1, isolation voltage sample circuit 2, single-chip microcomputer process circuit 4, control relay circuit 3, AC voltage sampling output circuit 5, insulating power supply transforming circuit 1 processes circuit 4 with single-chip microcomputer respectively with isolation voltage sample circuit 2 and is connected, and control relay circuit 3 processes circuit 4 with single-chip microcomputer the most respectively with AC voltage sampling output circuit 5 and is connected.
Insulating power supply transforming circuit 1, effect is to provide protection circuit power supply.Isolation voltage sample circuit 2, effect is to provide high-precision sampling voltage and gives single-chip microcomputer process circuit 4, and the analysis through single-chip microcomputer carrys out the break-make of control relay circuit 3, thus plays a protective role.Additionally process 4, circuit through single-chip microcomputer and reflect that the pulse signal of alternating voltage change sends in AC voltage sampling output circuit 5, AC voltage sampling output circuit 5 output is the pulse signal proportional to alternating voltage, it is simple to other equipment reads alternating voltage and carries out data process.
Claims (5)
1. a protection circuit; it is characterized in that it comprises insulating power supply transforming circuit (1), isolation voltage sample circuit (2), single-chip microcomputer process circuit (4), control relay circuit (3), AC voltage sampling output circuit (5); insulating power supply transforming circuit (1) processes circuit (4) with single-chip microcomputer respectively with isolation voltage sample circuit (2) and is connected, and control relay circuit (3) processes circuit (4) with single-chip microcomputer the most respectively with AC voltage sampling output circuit (5) and is connected.
A kind of protection circuit the most according to claim 1 is characterized in that described insulating power supply transforming circuit (1); it it is the input ac voltage step-down transformer that reaches 400V; reliable and stable working power can be provided for protection circuit when alternating voltage is in 100V to 400V voltage pulsation, and common protector is possible to when alternating voltage 400V, and self burns out.
A kind of protection circuit the most according to claim 1 is characterized in that described isolation voltage sample circuit (2), is a Miniature precision voltage transformer.
A kind of protection circuit the most according to claim 1 is characterized in that described single-chip microcomputer processes the microprocessor that circuit (4) is 8 low costs.
A kind of protection circuit the most according to claim 1 is characterized in that described AC voltage sampling output circuit (5) is a low voltage pulse signal exported by Single-chip Controlling; its frequency is proportional to the alternating voltage of input, reads alternating voltage for other products and provides conveniently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335512.2A CN105896461A (en) | 2016-05-19 | 2016-05-19 | Protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610335512.2A CN105896461A (en) | 2016-05-19 | 2016-05-19 | Protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896461A true CN105896461A (en) | 2016-08-24 |
Family
ID=56717000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610335512.2A Pending CN105896461A (en) | 2016-05-19 | 2016-05-19 | Protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105896461A (en) |
-
2016
- 2016-05-19 CN CN201610335512.2A patent/CN105896461A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203674487U (en) | Intelligent socket having display function | |
| CN204927711U (en) | Intelligent socket | |
| US10298033B2 (en) | Information processing method, smart battery, terminal and computer storage medium | |
| CN203745608U (en) | Portable relay detector | |
| CN103840728A (en) | System and method for controlling on-load capacity regulation and voltage regulation distribution transformer | |
| CN204831613U (en) | Wireless temperature sensor | |
| CN105067998A (en) | Voltage and current fluctuation detector | |
| CN204156512U (en) | Battery charger protective circuit | |
| CN102290686A (en) | Intelligent energy-saving socket | |
| CN105896461A (en) | Protection circuit | |
| CN105576618A (en) | Protection circuit | |
| CN106026013A (en) | Protection circuit for storage battery charger | |
| CN104730428A (en) | Alternating current and direct current online insulating monitoring device and system | |
| CN203734579U (en) | On-load capacity-adjusting and voltage-adjusting distribution transformer control system | |
| CN105181168A (en) | Wireless temperature sensor | |
| CN202285321U (en) | Output and input dual-protection system structure of alternating current voltage stabilizer | |
| CN104577952A (en) | Remote current circuit break protection system | |
| CN203027000U (en) | Novel intelligent multipurpose mobile power supply | |
| CN205122482U (en) | Intelligent direct current contactor | |
| CN105225895A (en) | A kind of intelligent DC contactor | |
| CN204947580U (en) | A kind of A.C. contactor protective device | |
| CN202663169U (en) | Polarity-conversion charger | |
| CN203826917U (en) | Intelligent type tripper | |
| CN204188778U (en) | A kind of battery inspection system | |
| CN204241539U (en) | A kind of electricity isolation module circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |
|
| WD01 | Invention patent application deemed withdrawn after publication |