CN104515930A - Leak current detection alarm circuit - Google Patents
Leak current detection alarm circuit Download PDFInfo
- Publication number
- CN104515930A CN104515930A CN201410694349.XA CN201410694349A CN104515930A CN 104515930 A CN104515930 A CN 104515930A CN 201410694349 A CN201410694349 A CN 201410694349A CN 104515930 A CN104515930 A CN 104515930A
- Authority
- CN
- China
- Prior art keywords
- integrated circuit
- base integrated
- circuit chip
- pin
- chip
- 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
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to a leak current detection alarm circuit, belongs to the technical field of leak current detection, and aims to provide the leak current detection alarm circuit, allowing detection of leak current for electric equipment and having an alarming function. According to the technical scheme, the leak current detection alarm circuit comprises a rectifier circuit Q1, a time-base integrated circuit chip IC1 and a speaker BL1; the positive alternating-current input end of the rectifier circuit Q1 is serially connected with a signal acquiring end a1 through a series resistor R1; the negative alternating-current input end of the rectifier circuit Q1 is connected with a signal acquiring end a2. Leak current information can be measured quickly and accurately; a warning is sent out in case that the electric equipment has leak current; the leak current detection alarm circuit is applicable to the field of electric leak detection.
Description
Technical field
Detection of electrical leakage warning circuit of the present invention, belongs to the technical field of detection of electrical leakage.
Background technology
Along with socioeconomic development, the raising of people's living standard, refrigerator, televisor, popularizing of the housed devices such as air-conditioning, many facilities have been with to the life of people, but with in electric process, due to the defect of electric equipment own, electric equipment is aging, the reasons such as electrical equipment improper use, likely can cause the generation of electric equipment leaky, harm is brought to the property of people and life security, as: the spark that electric equipment electric leakage produces may lead to fire, blast, get an electric shock and also likely cause personal injury, therefore, the detection of electrical leakage of electric equipment is just seemed particularly important.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical matters to be solved is: provide a kind of consumer that can detect to leak electricity and the detection of electrical leakage warning circuit carrying out alarm.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Detection of electrical leakage warning circuit, comprise rectification circuit Q1, time-base integrated circuit chip IC 1 and loudspeaker BL1, be connected with signals collecting end a1 after the forward ac input end series resistor R1 of described rectification circuit Q1, the negative sense ac input end of described rectification circuit Q1 is connected with signals collecting end a2, the forward dc output terminal of described rectification circuit Q1 is connected with the positive pole of diode D1, be connected with the control end of controllable silicon D2 after the positive pole of the negative pole shunt-wound capacitance C1 of described diode D1, the positive pole of described controllable silicon D2 is also connected with power supply VCC after connecing the power end of described time-base integrated circuit chip IC 1, the negative pole of described controllable silicon D2 is connected with a stiff end of adjustable resistance R2, the movable end of described adjustable resistance R2 is connected with the replacement end of described time-base integrated circuit chip IC 1, be connected with the replacement keyed end of described time-base integrated circuit chip IC 1 behind the positive pole of trigger end shunt-wound capacitance C2 of described time-base integrated circuit chip IC 1 and one end of resistance R3, be connected with the output terminal of described time-base integrated circuit chip IC 1 after the positive pole of the other end shunt-wound capacitance C3 of described resistance R3, the negative pole of described electric capacity C3 is connected with the positive pole of described loudspeaker BL1, the negative pole of described loudspeaker BL1, the earth terminal of described time-base integrated circuit chip IC 1, the negative pole of described electric capacity C2, another stiff end of described adjustable resistance R2, the negative pole of described electric capacity C1 and the equal ground connection of negative sense DC output end of described rectification circuit Q1.
Described time-base integrated circuit chip IC 1 is NE555 chip, and 1 pin of described NE555 chip is earth terminal, 2 pin are trigger end, 3 pin are output terminal, 4 pin are held for resetting, 6 pin are replacement keyed end, 8 pin are power end; Described power supply VCC is+6V power supply.
The present invention compared with prior art has following beneficial effect:
Detection of electrical leakage warning circuit in the present invention, can directly be connected with the shell of consumer or ground wire, when signals collecting end a1, a2 no signal inputs, controllable silicon D2 ends, its output voltage is less than 0.7V, the replacement end of time-base integrated circuit chip IC 1 is by enforced reset, and whole circuit is in off position, and loudspeaker BL1 not sounding rings; When signals collecting end a1 and a2 has current signal to input, controllable silicon D2 conducting, the replacement end of time-base integrated circuit chip IC 1 becomes high level, whole circuit starting of oscillation, and loudspeaker BL1 sends chimes of doom, people are reminded to take measures, with the generation of accident prevention, the present invention can measure electric leakage information fast and accurately, and can give the alarm, whole circuit structure is succinct, practical.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail;
Fig. 1 is the circuit theory diagrams of detection of electrical leakage warning circuit of the present invention.
Embodiment
As shown in Figure 1, detection of electrical leakage warning circuit, comprise rectification circuit Q1, time-base integrated circuit chip IC 1 and loudspeaker BL1, be connected with signals collecting end a1 after the forward ac input end series resistor R1 of described rectification circuit Q1, the negative sense ac input end of described rectification circuit Q1 is connected with signals collecting end a2, the forward dc output terminal of described rectification circuit Q1 is connected with the positive pole of diode D1, be connected with the control end of controllable silicon D2 after the positive pole of the negative pole shunt-wound capacitance C1 of described diode D1, the positive pole of described controllable silicon D2 is also connected with power supply VCC after connecing the power end of described time-base integrated circuit chip IC 1, the negative pole of described controllable silicon D2 is connected with a stiff end of adjustable resistance R2, the movable end of described adjustable resistance R2 is connected with the replacement end of described time-base integrated circuit chip IC 1, be connected with the replacement keyed end of described time-base integrated circuit chip IC 1 behind the positive pole of trigger end shunt-wound capacitance C2 of described time-base integrated circuit chip IC 1 and one end of resistance R3, be connected with the output terminal of described time-base integrated circuit chip IC 1 after the positive pole of the other end shunt-wound capacitance C3 of described resistance R3, the negative pole of described electric capacity C3 is connected with the positive pole of described loudspeaker BL1, the negative pole of described loudspeaker BL1, the earth terminal of described time-base integrated circuit chip IC 1, the negative pole of described electric capacity C2, another stiff end of described adjustable resistance R2, the negative pole of described electric capacity C1 and the equal ground connection of negative sense DC output end of described rectification circuit Q1.
In the present invention, described time-base integrated circuit chip IC 1 is NE555 chip, and 1 pin of described NE555 chip is earth terminal, 2 pin are trigger end, 3 pin are output terminal, 4 pin are held for resetting, 6 pin are replacement keyed end, 8 pin are power end; Described power supply VCC is+6V power supply.
Particularly, after the shell of the present invention and consumer or ground wire are connected, when signals collecting end a1, a2 no signal inputs, controllable silicon D2 ends, its output voltage is less than 0.7V, the replacement end of time-base integrated circuit chip IC 1 is by enforced reset, and whole circuit is in off position, and loudspeaker BL1 not sounding rings; When signals collecting end a1 and a2 has current signal to input, controllable silicon D2 conducting, the replacement end of time-base integrated circuit chip IC 1 becomes high level, whole circuit starting of oscillation, and loudspeaker BL1 sends chimes of doom, reminds people to take measures, with the generation of accident prevention.
Detection of electrical leakage warning circuit in the present embodiment, comprise rectification circuit Q1, time-base integrated circuit chip IC 1 and loudspeaker BL1, can directly be connected with the shell of consumer or ground wire, electric leakage information can be measured fast and accurately, and can give the alarm, whole circuit structure is succinct, there is outstanding substantive distinguishing features and significant progress, by reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (3)
1. detection of electrical leakage warning circuit, it is characterized in that: comprise rectification circuit Q1, time-base integrated circuit chip IC 1 and loudspeaker BL1, be connected with signals collecting end a1 after the forward ac input end series resistor R1 of described rectification circuit Q1, the negative sense ac input end of described rectification circuit Q1 is connected with signals collecting end a2, the forward dc output terminal of described rectification circuit Q1 is connected with the positive pole of diode D1, be connected with the control end of controllable silicon D2 after the positive pole of the negative pole shunt-wound capacitance C1 of described diode D1, the positive pole of described controllable silicon D2 is also connected with power supply VCC after connecing the power end of described time-base integrated circuit chip IC 1, the negative pole of described controllable silicon D2 is connected with a stiff end of adjustable resistance R2, the movable end of described adjustable resistance R2 is connected with the replacement end of described time-base integrated circuit chip IC 1, be connected with the replacement keyed end of described time-base integrated circuit chip IC 1 behind the positive pole of trigger end shunt-wound capacitance C2 of described time-base integrated circuit chip IC 1 and one end of resistance R3, be connected with the output terminal of described time-base integrated circuit chip IC 1 after the positive pole of the other end shunt-wound capacitance C3 of described resistance R3, the negative pole of described electric capacity C3 is connected with the positive pole of described loudspeaker BL1, the negative pole of described loudspeaker BL1, the earth terminal of described time-base integrated circuit chip IC 1, the negative pole of described electric capacity C2, another stiff end of described adjustable resistance R2, the negative pole of described electric capacity C1 and the equal ground connection of negative sense DC output end of described rectification circuit Q1.
2. detection of electrical leakage warning circuit according to claim 1, it is characterized in that: described time-base integrated circuit chip IC 1 is NE555 chip, 1 pin of described NE555 chip be earth terminal, 2 pin are trigger end, 3 pin are output terminal, 4 pin for reset end, 6 pin for resetting keyed end, 8 pin are power end.
3. detection of electrical leakage warning circuit according to claim 1, is characterized in that: described power supply VCC is+6V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694349.XA CN104515930A (en) | 2014-11-27 | 2014-11-27 | Leak current detection alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410694349.XA CN104515930A (en) | 2014-11-27 | 2014-11-27 | Leak current detection alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104515930A true CN104515930A (en) | 2015-04-15 |
Family
ID=52791536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410694349.XA Pending CN104515930A (en) | 2014-11-27 | 2014-11-27 | Leak current detection alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104515930A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071342A (en) * | 2015-08-11 | 2015-11-18 | 成都亿信标准认证集团有限公司 | Electric leakage protection circuit for data server |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267048A (en) * | 1999-03-16 | 2000-09-20 | 胜利油田石校科技开发中心 | Electric leakage alarm device for workshops in oil well field |
| CN201029002Y (en) * | 2007-04-02 | 2008-02-27 | 陈建毅 | Creepage warning device of electric apparatus outer shell |
| CN203433023U (en) * | 2013-08-22 | 2014-02-12 | 国网山东齐河县供电公司 | Intelligent electric-meter box with electric-leakage alarm |
| CN203826712U (en) * | 2014-05-23 | 2014-09-10 | 北京联合大学 | Household appliance leakage acousto-optic alarm socket |
| CN204330933U (en) * | 2014-11-27 | 2015-05-13 | 国家电网公司 | A kind of detection of electrical leakage warning circuit |
-
2014
- 2014-11-27 CN CN201410694349.XA patent/CN104515930A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267048A (en) * | 1999-03-16 | 2000-09-20 | 胜利油田石校科技开发中心 | Electric leakage alarm device for workshops in oil well field |
| CN201029002Y (en) * | 2007-04-02 | 2008-02-27 | 陈建毅 | Creepage warning device of electric apparatus outer shell |
| CN203433023U (en) * | 2013-08-22 | 2014-02-12 | 国网山东齐河县供电公司 | Intelligent electric-meter box with electric-leakage alarm |
| CN203826712U (en) * | 2014-05-23 | 2014-09-10 | 北京联合大学 | Household appliance leakage acousto-optic alarm socket |
| CN204330933U (en) * | 2014-11-27 | 2015-05-13 | 国家电网公司 | A kind of detection of electrical leakage warning circuit |
Non-Patent Citations (2)
| Title |
|---|
| 赵光 等编: "《555时基电路应用280例》", 31 March 2010 * |
| 黄继昌 主编，郭继忠、张海贵、程宝平、徐巧鱼 编著: "《电子元器件应用手册》", 31 July 2004 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071342A (en) * | 2015-08-11 | 2015-11-18 | 成都亿信标准认证集团有限公司 | Electric leakage protection circuit for data server |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102749562A (en) | Insulation monitoring device and monitoring method of power cell of electric vehicle | |
| CN206990730U (en) | A kind of battery of electric vehicle positive-negative connected and detection circuit is not connect | |
| CN203826712U (en) | Household appliance leakage acousto-optic alarm socket | |
| CN104749484A (en) | Electric-leakage monitoring device | |
| CN106299180B (en) | The combination of electric tool and battery pack | |
| CN203572906U (en) | Grounding wire electrified detection device | |
| CN102338838A (en) | Creepage detection circuit | |
| CN204330933U (en) | A kind of detection of electrical leakage warning circuit | |
| CN203672957U (en) | Non-contact test pencil | |
| CN104515930A (en) | Leak current detection alarm circuit | |
| CN205679678U (en) | A kind of ground step voltage detection device | |
| CN204358942U (en) | A kind of electric heater with earth leakage detection functions | |
| CN103730782A (en) | Acousto-optic warning power socket for electric leakage of electric equipment | |
| CN103278729B (en) | Hi-pot test ground connection condition tester | |
| CN209200694U (en) | A kind of charging balanced circuit | |
| CN204008937U (en) | A kind of household socket leakage-current alarm circuit | |
| CN204012026U (en) | A kind of family expenses electric leakage automatic alarm protection socket | |
| CN103116075B (en) | Intelligent phase-checking device for P-type power distribution station | |
| CN204515063U (en) | Leakage monitoring device | |
| CN105403756A (en) | Circuit device having ground wire live detection function | |
| CN205720392U (en) | Non-contact zero live wire detects warning circuit and instrument automatically | |
| CN204145287U (en) | Switching power supply protection circuit | |
| CN104319559A (en) | Leakage protection plug with ground wire live-line indication | |
| CN204028225U (en) | Supply frequency detecting device | |
| CN204680154U (en) | Portable charged alarm system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150415 |