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
- Authority
- CN
- China
- Prior art keywords
- socket
- circuit
- latch
- overvoltage protection
- overvoltage crowbar
- 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
Links
Images
Abstract
The utility model discloses a power socket with an overvoltage protection function. The power socket comprises a casing and a power output socket arranged in the casing. The power socket further comprises an overvoltage protection circuit. The input end of the overvoltage protection circuit is electrically connected with the output end of a household power supply, and the output end of the overvoltage protection circuit is connected with the power output socket. The overvoltage protection circuit comprises a rectifying filtering circuit and a comparison circuit. The overvoltage protection circuit is further connected with a relay and a latch in series. A divider resistor is arranged along the current flowing direction between the output end of the household power supply and the rectifying filtering circuit, the rectifying filtering circuit is electrically connected with the comparison circuit, and a comparator is arranged in the comparison circuit. The comparator is connected with the latch in series, and a triode is arranged in the current flowing direction between the latch and the relay. A light-emitting diode (LED) warning lamp is further arranged on the casing. The power socket can protect electric appliances inserted on the power socket and avoid the electric appliances from damage caused by 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)
1. supply socket with over-voltage protecting function, comprise housing and be arranged on the interior power output socket of housing, it is characterized in that: 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.
2. a kind of supply socket with over-voltage protecting function according to claim 1, is characterized in that: be parallel with the digital watch potentiometer on described current rectifying and wave filtering circuit.
3. a kind of supply socket with over-voltage protecting function according to claim 2, is characterized in that: be provided with reset button on described latch.
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 | A kind of 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 | A kind of socket and mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201590645U (en) | AC input over-voltage and under-voltage protection device for electric apparatus | |
| CN203722205U (en) | Overvoltage and electric leakage protection circuit | |
| CN102338838A (en) | Creepage detection circuit | |
| CN202949096U (en) | Power socket with overvoltage protection function | |
| CN204068197U (en) | The under-voltage overvoltage automatic protection circuit of a kind of civil power | |
| CN103401215B (en) | A kind of over-and under-voltage protection circuit, protection socket and terminal | |
| CN201518411U (en) | Novel overvoltage protector | |
| CN205160385U (en) | Power converter based on printed circuit board | |
| CN104113038A (en) | Protection circuit | |
| CN203932969U (en) | A kind of low-voltage leakage protector with over-voltage protecting function | |
| CN205080676U (en) | Electronic circuit high pressure warning protection circuit | |
| CN203504389U (en) | Power supply device | |
| CN207652039U (en) | A kind of input protection circuit for low pressure input electrical appliance | |
| CN202856008U (en) | Automatic power-off protection socket | |
| CN201813031U (en) | Protection type plug board | |
| CN202633933U (en) | Surge protector circuit of low-voltage power supply | |
| CN205375089U (en) | Take power supply switching circuit of isolation control function | |
| CN202585956U (en) | Socket protection module | |
| CN204347175U (en) | A kind of lightning current HF reject device with monitoring function | |
| CN204905838U (en) | Simple and easy overvoltage protection trigger device | |
| CN203632274U (en) | Panel computer charger having lightning protection function | |
| CN109088392A (en) | A kind of protection circuit and electronic equipment | |
| CN203480360U (en) | Power strip | |
| CN217087764U (en) | Anti-interference power supply | |
| CN203233176U (en) | Anti-lightning protector |
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 |