CN202949096U - Power socket with overvoltage protection function - Google Patents
Power socket with overvoltage protection function Download PDFInfo
- Publication number
- CN202949096U CN202949096U CN 201220608643 CN201220608643U CN202949096U CN 202949096 U CN202949096 U CN 202949096U CN 201220608643 CN201220608643 CN 201220608643 CN 201220608643 U CN201220608643 U CN 201220608643U CN 202949096 U CN202949096 U CN 202949096U
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- overvoltage protection
- circuit
- socket
- latch
- power
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Abstract
本实用新型公开了一种具有过压保护功能的电源插座，包括壳体和设置在壳体内的电源输出插座，所述电源插座还包括过压保护电路，所述过压保护电路的输入端与家用电源输出端电连接，过压保护电路的输出端与电源输出插座相连接，过压保护电路包括整流滤波电路和比较电路，所述过压保护电路上还串接有继电器和锁存器；所述家用电源输出端与整流滤波电路之间沿电流的流动方向设置有分压电阻，整流滤波电路与比较电路电连接，比较电路中设置有比较器；所述比较器与上述的锁存器相串联，所述锁存器与上述的继电器之间沿电流的流动方向设置有三极管；所述壳体上还设置有LED警示灯。本实用新型可保护插接在电源插座上的电器，避免电器因过压而损坏。
The utility model discloses a power socket with an overvoltage protection function, which comprises a casing and a power output socket arranged in the casing, the power socket also includes an overvoltage protection circuit, the input end of the overvoltage protection circuit is connected to the The output end of the household power supply is electrically connected, the output end of the overvoltage protection circuit is connected to the power output socket, the overvoltage protection circuit includes a rectification filter circuit and a comparison circuit, and a relay and a latch are connected in series on the overvoltage protection circuit; A voltage dividing resistor is arranged between the output end of the household power supply and the rectification and filtering circuit along the flow direction of the current, the rectification and filtering circuit is electrically connected to the comparison circuit, and a comparator is arranged in the comparison circuit; the comparator and the above-mentioned latch connected in series, a triode is arranged between the latch and the above-mentioned relay along the flow direction of the current; an LED warning light is also arranged on the housing. The utility model can protect the electric appliances plugged in the power socket, and prevent the electric appliances from being damaged due to overvoltage.
Description
Technical field
The utility model relates to a kind of supply socket, relates in particular to a kind of supply socket with over-voltage protecting function.
Background technology
Supply socket; also claim portable power source socket or power supply changeover device; be used for providing single group or multi-group power output; it is the bridge block between power supply and electrical equipment; now widely used supply socket be arrange on socket jack and in connect the power supply contact, obtain power supply for the insertion of electrical appliance plug, this simple socket can not provide overvoltage protection; in case external electric voltage exception raises, household electrical appliance are maybe needed the harm meeting of the electronic product that charges very serious.Although some sockets are equipped with fuse, due to fuse arrange blowout current whether proper and time response problem, the safety of electrical appliance when being difficult to guarantee high pressure.In the past family, the office power consumption equipment simple; this harm still is not enough to cause people's attention; but along with popularizing of household electrical appliance; expensive household appliances increase day by day; such as household PC, central air-conditioning, plasm TV etc.; because power grid maintenance is made mistakes or broken neutral line causes that phase voltage increases suddenly, because general supply socket does not possess over-voltage protecting function, cause moment to burn the accident of household appliances more and more.This shows, prior art awaits further improving and improving.
The utility model content
The utility model is the weak point of avoiding above-mentioned prior art to exist, and a kind of supply socket with over-voltage protecting function is provided.
The technical scheme that the utility model adopts is:
A kind of supply socket with over-voltage protecting function, comprise housing and be arranged on the interior power output socket of housing, described supply socket with over-voltage protecting function also comprises overvoltage crowbar, the input of described overvoltage crowbar is electrically connected to the domestic power supply output, the output of overvoltage crowbar is connected with above-mentioned power output socket, described overvoltage crowbar comprises current rectifying and wave filtering circuit and comparison circuit, also is serially connected with relay and latch on described overvoltage crowbar; Flow direction along electric current between described domestic power supply output and current rectifying and wave filtering circuit is provided with divider resistance, and described current rectifying and wave filtering circuit is electrically connected to above-mentioned comparison circuit, is provided with comparator in described comparison circuit; Described comparator and above-mentioned latch are in series, and the flow direction along electric current between described latch and above-mentioned relay is provided with triode; Also be provided with the LED warning lamp on described housing.
Be parallel with the digital watch potentiometer on described current rectifying and wave filtering circuit.
Be provided with reset button on described latch.
Owing to having adopted technique scheme, the obtained beneficial effect of the utility model is:
Overvoltage crowbar Real-Time Monitoring supply voltage in the utility model; when in case supply line causes the voltage overrate extremely; the triode conducting; relay power work; circuit interrupts; thereby protection is plugged on the electrical equipment in supply socket, and the electrical equipment of having avoided being plugged on socket damages because of overvoltage.
Description of drawings
Fig. 1 is schematic block circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment, but the utility model is not limited to these embodiment.
As shown in Figure 1, a kind of supply socket with over-voltage protecting function, comprise housing and be arranged on the interior power output socket of housing, described supply socket with over-voltage protecting function also comprises overvoltage crowbar, the input of described overvoltage crowbar is electrically connected to the domestic power supply output, the output of overvoltage crowbar is connected with above-mentioned power output socket, described overvoltage crowbar comprises current rectifying and wave filtering circuit and comparison circuit, also is serially connected with relay and latch on described overvoltage crowbar; Flow direction along electric current between described domestic power supply output and current rectifying and wave filtering circuit is provided with divider resistance, and described current rectifying and wave filtering circuit is electrically connected to above-mentioned comparison circuit, is provided with comparator in described comparison circuit; Described comparator and above-mentioned latch are in series, and the flow direction along electric current between described latch and above-mentioned relay is provided with triode; Also be provided with the LED warning lamp on described housing; Be parallel with the digital watch potentiometer on described current rectifying and wave filtering circuit; Be provided with reset button on described latch.
in use, obtain stable direct current signal by current rectifying and wave filtering circuit, be connected to this moment that digital watch potentiometer on current rectifying and wave filtering circuit can demonstrate supply voltage and duration, positive input by the described comparator of the access of the direct voltage after rectifying and wave-filtering, the rated voltage of the required charging electrical equipment of negative input input of described comparator, the positive input voltage that causes comparator when the overtension in circuit is during greater than negative input voltage, the triode conducting, relay power work, the LED warning lamp that is arranged on housing is bright, circuit disconnects, the electrical equipment of having avoided being plugged on socket damages because of overvoltage.Work as debugging ircuit fault, can make by the reset button on latch circuit conducting again when the voltage in circuit reaches safety value, electrical equipment obtains normal charging voltage.
What need to further illustrate is that specific embodiment described herein is only to spiritual example explanation of the present utility model.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220608643 CN202949096U (en) | 2012-11-16 | 2012-11-16 | Power socket with overvoltage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220608643 CN202949096U (en) | 2012-11-16 | 2012-11-16 | Power socket with overvoltage protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202949096U true CN202949096U (en) | 2013-05-22 |
Family
ID=48424777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220608643 Expired - Fee Related CN202949096U (en) | 2012-11-16 | 2012-11-16 | Power socket with overvoltage protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202949096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069342A (en) * | 2017-03-14 | 2017-08-18 | 广东欧珀移动通信有限公司 | Socket and mobile terminal |
-
2012
- 2012-11-16 CN CN 201220608643 patent/CN202949096U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069342A (en) * | 2017-03-14 | 2017-08-18 | 广东欧珀移动通信有限公司 | Socket and mobile terminal |
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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: 20130522 Termination date: 20131116 |