CN102435901B - AC (alternating)/DC (direct current) power safety detector - Google Patents
AC (alternating)/DC (direct current) power safety detector Download PDFInfo
- Publication number
- CN102435901B CN102435901B CN201110345104.2A CN201110345104A CN102435901B CN 102435901 B CN102435901 B CN 102435901B CN 201110345104 A CN201110345104 A CN 201110345104A CN 102435901 B CN102435901 B CN 102435901B
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- power supply
- detected
- conducting
- 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
- 239000003990 capacitor Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- RWSXRVCMGQZWBV-WDSKDSINSA-N glutathione Chemical compound OC(=O)[C@@H](N)CCC(=O)N[C@@H](CS)C(=O)NCC(O)=O RWSXRVCMGQZWBV-WDSKDSINSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses an AC (alternating)/DC (direct current) power safety detector. The AC/DC power safety detector is composed of a control circuit and a testing circuit, wherein the control circuit comprises a first relay, a second relay, and a delay capacitor, and is used for controlling the operating state of the testing circuit; and the testing circuit comprises an over-current conducting circuit and a third relay for detecting a to-be-detected power supply. The detector is convenient in operation, is safe and reliable, and fills the gap of devices for detecting and clearing high-voltage short-circuit faults.
Description
Technical field
The present invention relates to a kind of electrical detection instrument, be specially a kind of power detector.
Background technology
Increasingly mature along with LED technology, its range of application at lighting field is more and more wider, has also increased LEDAC/DC power-supply controller of electric use amount simultaneously.If LEDAC/DC power supply exists short trouble at input end, after access electrical network, or cause that device is burnt, fuse melts, cause the situations such as local power failure, even also can send violent explosion sound, not only to enterprise, bring certain economic loss, also produce and bring unnecessary trouble.As before access electrical network, LEDAC/DC power supply made to whether have short circuit, can avoid the generation of above-mentioned situation, but not yet have so far, be specifically designed to pertinent instruments quick, safety detection AC/DC power supply.
Summary of the invention
For overcoming the blank that prior art there is no fast, whether safety detection AC/DC power supply exists short trouble instrument, the invention provides a kind of AC/DC power safety detector.
For realizing above-mentioned technical purpose, the present invention realizes by the following technical solutions: a kind of AC/DC power safety detector, by control circuit and test circuit two parts, formed, control circuit is connected by Control test circuit and power supply to be detected, and test circuit provides detection voltage for power supply to be detected;
Control circuit comprises:
The first relay, its contact is normally open, in order to control the conducting of test circuit, control circuit;
The second relay, it is provided with two groups of transfer contacts, the input direction in order to transition detection voltage at power positive cathode to be detected;
Delay capacitor, makes after the second relay conducting occurs in the first relay conducting with a charging process, and then guarantees certain interval of time after test circuit conducting, and then transition detection voltage is at the input direction of power positive cathode to be detected;
Often open button ON, one group of normally opened contact of itself and the first relay is installed side by side, with thinking that the operation of control circuit provides trigger current; Normally closed button OFF, in order to cut off the first relay, the second relay current supply circuit;
Test circuit comprises:
Overcurrent turning circuit, is provided with the 3rd relay in its circuit, the normally closed contact of the 3rd relay is arranged on control circuit, adopts normally closed contact, in order to control the power supply state of the first relay, the second relay;
Pilot lamp D3, D4, be connected with the both positive and negative polarity of power supply to be detected side by side, and both conducting directions are contrary;
NTC resistance, is installed on the current supply circuit of test circuit, for suppressing the impact of surge current to power supply that power on;
Load D5, is connected with power supply output loop to be detected, indicates the output state of power supply to be detected.
The present invention has following beneficial effect: by power supply access test circuit to be detected, by the conducting state of control circuit part control test circuit, and control and detect the inflow direction of voltage with respect to power supply to be detected, power supply to be detected is carried out to the detection of twice input voltage direction, by pilot lamp D3, D4, load D5, judge whether power supply to be detected exists short trouble, whether can normally work; As power supply to be detected exists short trouble, overcurrent turning circuit stops the first relay work by startup the 3rd relay, and then test circuit and power supply to be detected are disconnected, and avoids causing device to burn.The operation of this tester is more convenient, safe and reliable, has filled up the blank that detects and get rid of high voltage short circuit fault instrument.
Accompanying drawing explanation
Accompanying drawing is embodiment of the present invention circuit diagram.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
This device consists of control circuit and test circuit two parts;
Control circuit part is the first relay J 1 in parallel by filter rectification bridge, the second relay J 2 provides working current, the feed circuit of the second relay J 2 are provided with delay capacitor C2, under "on" position, delay capacitor C2 makes after the second relay J 2 conductings occur in the first relay J 1 conducting with a charging process, the first relay J 1, the current supply circuit of the second relay J 2 is provided with and often opens button ON, the normally opened contact J1-1 of normally closed button OFF and the first relay J 1, normally opened contact J1-1 with often open button ON and install side by side, after often opening button ON and pressing, filter rectification bridge drives the first relay J 1 to work, normally opened contact J1-1 closure, after often opening button ON reset, normally opened contact J1-1 guarantees the first relay J 1, the second relay J 2 current supply circuit conductings, normally closed button OFF is for initiatively stopping the first relay J 1, the second relay J 2 is worked, before often opening button ON, be provided with the pilot lamp D1 that accesses filter rectification bridge, whether pilot lamp D1 is in order to indicate this device in holding state, i.e. incoming transport power supply whether, the first relay J 1, before the second relay J 2, be provided with the pilot lamp D2 of access filter rectification bridge, pilot lamp D2 is in order to show the first relay J 1, whether the second relay J 2 is in running order,
Test circuit part provides detection voltage by rectifier bridge, the output terminal of rectifier bridge is provided with a NTC resistance, for suppressing to power on the impact of surge current to power supply, the output loop of rectifier bridge is by the normally opened contact J1-2 of relay J 1, normally opened contact JI-3 controls conducting, off-state, both positive and negative polarity circuit two ends of rectifier bridge connect respectively the transfer contact J2-1 of relay J 2, the moving contact of J2-2, another two stationary contacts of transfer contact J2-1 connect respectively the both positive and negative polarity of power supply to be detected, another two stationary contacts of transfer contact J2-2 also connect respectively the both positive and negative polarity of power supply to be detected, on current supply circuit with power supply to be detected, be connected with an overcurrent turning circuit, overcurrent turning circuit is provided with the 3rd relay J 3, the normally closed contact of the 3rd relay J 3 is arranged on the first relay J 1 in control circuit, on the current supply circuit of the second relay J 2, described overcurrent turning circuit consists of multiple resistance and triode, when the electric current of rectifier bridge output is in rated range, overcurrent turning circuit is in cut-off state, the 3rd relay J 3 is failure to actuate, when there is short trouble in power supply to be detected, output current over range, now overcurrent turning circuit is in conducting state, the 3rd relay J 3 conductings, by contact J3-1, disconnect the current supply circuit of the first relay J 1, and then make test circuit, control circuit is all in off-state, pilot lamp D3 is installed between the both positive and negative polarity of power supply to be detected side by side, D4, both conducting directions are contrary, indicate respectively transfer contact J2-1, before and after J2-2 conversion, whether power supply to be detected there is input voltage, the output terminal of power supply to be detected is connected to load D5, load D5 circuit is provided with reometer and reometer.
Its principle of work is: the filter rectification bridge of control circuit, the rectifier bridge of test circuit are connected with 220V AC power respectively, and pilot lamp D1 is lit, and now represent that this device is in holding state, press and often open button ON, first make the first relay J 1 conducting, make normally opened contact J1-1, J1-2, J1-3 closure, often drive the rear control circuit of button ON reset, test circuit is all still in conducting state, test circuit provides voltage by rectifier bridge for power supply to be detected, detect for the first time, if there is short trouble in tested voltage, overcurrent turning circuit will make the 3rd relay J 3 conductings by conducting, normally closed contact J3 disconnects, because the first relay J 1 current supply circuit is cut off, normally opened contact J1-1, J1-2, J1-3 disconnects, now, pilot lamp D1 is bright, pilot lamp D4, load D5 does not work, represent that power supply to be detected exists short trouble, if there is not short trouble in power supply to be detected, detect for the second time, because the first relay J 1 is still in running order, delay capacitor C2 completes after charging process, the second relay J 2 obtains electric current in succession, make transfer contact J2-1, the annexation of J2-2 and power positive cathode to be detected exchanges, rectifier bridge detects for the second time for power supply to be detected provides voltage, if there is short trouble in tested voltage, overcurrent turning circuit will make the 3rd relay J 3 conductings by conducting, normally closed contact J3 disconnects, because the first relay J 1 current supply circuit is cut off, normally opened contact J1-1, J1-2, J1-3 disconnects, now, pilot lamp D1 is bright, pilot lamp D3, load D5 does not work, represent that power supply to be detected exists short trouble, if there is not short trouble in power supply to be detected, pilot lamp D1, pilot lamp D3, load D5 is illuminating state, to this, complete the detection to power supply to be detected, press normally closed button OFF, the first relay J 1 current supply circuit is cut off, and causes normally opened contact J1-1 to disconnect, and then makes this device get back to holding state.
Claims (1)
1. an AC/DC power safety detector, is characterized in that: it consists of control circuit and test circuit two parts, and control circuit is connected by Control test circuit and power supply to be detected, and test circuit provides detection voltage for power supply to be detected;
Control circuit comprises:
The first relay, its contact is normally open, in order to control the conducting of test circuit, control circuit;
The second relay, it is provided with two groups of transfer contacts, the input direction in order to transition detection voltage at power positive cathode to be detected;
Delay capacitor, makes after the second relay conducting occurs in the first relay conducting with a charging process, and then guarantees certain interval of time after test circuit conducting, and then transition detection voltage is at the input direction of power positive cathode to be detected;
Often open button ON, one group of normally opened contact of itself and the first relay is installed side by side, with thinking that the operation of control circuit provides trigger current; Normally closed button OFF, in order to cut off the first relay, the second relay current supply circuit;
Test circuit comprises:
Overcurrent turning circuit, is provided with the 3rd relay in its circuit, the normally closed contact of the 3rd relay is arranged on control circuit, adopts normally closed contact, in order to control the power supply state of the first relay, the second relay;
Pilot lamp D3, D4, be connected with the both positive and negative polarity of power supply to be detected side by side, and both conducting directions are contrary;
NTC resistance, is installed on the current supply circuit of test circuit, for suppressing the impact of surge current to power supply that power on;
Load D5, is connected with power supply output loop to be detected, indicates the output state of power supply to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110345104.2A CN102435901B (en) | 2011-10-28 | 2011-10-28 | AC (alternating)/DC (direct current) power safety detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110345104.2A CN102435901B (en) | 2011-10-28 | 2011-10-28 | AC (alternating)/DC (direct current) power safety detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102435901A CN102435901A (en) | 2012-05-02 |
| CN102435901B true CN102435901B (en) | 2014-04-30 |
Family
ID=45984053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110345104.2A Expired - Fee Related CN102435901B (en) | 2011-10-28 | 2011-10-28 | AC (alternating)/DC (direct current) power safety detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102435901B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545801B (en) * | 2013-10-11 | 2017-06-06 | 徐州市恒源电器有限公司 | A kind of test switch protecting circuit |
| CN113504460A (en) * | 2021-08-04 | 2021-10-15 | 南京创维平面显示科技有限公司 | Circuit board detection device and circuit board detection method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2664402B2 (en) * | 1988-04-05 | 1997-10-15 | セコム株式会社 | Security device |
| CN201368910Y (en) * | 2009-02-24 | 2009-12-23 | 楼晓春 | Lithium battery property tester |
| CN201961159U (en) * | 2011-03-01 | 2011-09-07 | 江苏捷诚车载电子信息工程有限公司 | Power supply monitoring and warning device in automobile shelter |
| CN202339391U (en) * | 2011-10-28 | 2012-07-18 | 山东明华光电科技有限公司 | AC/DC (Alternating Current/Direct Current) power supply safety detection instrument |
-
2011
- 2011-10-28 CN CN201110345104.2A patent/CN102435901B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102435901A (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101277085A (en) | Motor drive device | |
| CN106655145B (en) | A kind of battery power feeds electric voltage reverse-connection protection circuit | |
| CN210835157U (en) | Circuit breaker on-off fault detection circuit | |
| CN102156243B (en) | The detection method of a kind of state of power unit fuse and device | |
| CN202050245U (en) | Three-phase intelligent composite switching device | |
| CN107039989A (en) | The new fling-cut switch of secondary capacitor | |
| CN200941553Y (en) | Short-circuit protective circuit of dc. power source | |
| CN102946106B (en) | Silicon controlled rectifier combination switch | |
| CN102435901B (en) | AC (alternating)/DC (direct current) power safety detector | |
| CN204696056U (en) | A kind of circuit breaker of Novel belt circuit checker | |
| CN204230865U (en) | A kind of motor protecting device | |
| CN204008808U (en) | Alternating current is scurried into the detection of straight-flow system and is compeled to jump device | |
| CN205724914U (en) | Three-phase intelligent combination switch | |
| CN205210232U (en) | Low pressure intelligence fault detector | |
| CN104133150A (en) | Thyristor zero-crossing power regulation system load open-circuit alarm | |
| CN202339391U (en) | AC/DC (Alternating Current/Direct Current) power supply safety detection instrument | |
| CN203368014U (en) | Soft start protection device and compressor diagnosis protection device comprising same | |
| CN202798126U (en) | Automatic switching system for uninterrupted power supply of PLC (programmable logic controller) | |
| CN103023044B (en) | Combination switch with intelligent zero-crossing switching function | |
| CN102957157B (en) | Silicon controlled composite switch of intelligent zero-crossing switching | |
| CN102088248A (en) | Intrinsically safe power supply with high output power | |
| CN104953535A (en) | Breaking circuit and active type breaking protection device applying same | |
| CN212695094U (en) | Circuit breaker, power distribution system and signal detection system | |
| CN203965593U (en) | Air switch test device | |
| CN204464945U (en) | A kind of light fixture abnormal conditions detection 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 253000, Shandong, Lingxian County province Dezhou Economic Development Zone Xingguo street, South First Patentee after: SHANDONG KOUGIN LIGHTING TECHNOLOGY CO.,LTD. Address before: 253500, Shandong, Lingxian County province Dezhou Economic Development Zone Xingguo street, South First Patentee before: Shandong Minghua Photoelectric Technology Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: AC/DC power safety detector Effective date of registration: 20161202 Granted publication date: 20140430 Pledgee: Bank of Dezhou Limited by Share Ltd. Road 38 branch Pledgor: SHANDONG KOUGIN LIGHTING TECHNOLOGY CO.,LTD. Registration number: 2016990001045 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191203 Granted publication date: 20140430 Pledgee: Bank of Dezhou Limited by Share Ltd. Road 38 branch Pledgor: SHANDONG KOUGIN LIGHTING TECHNOLOGY CO.,LTD. Registration number: 2016990001045 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: AC / DC power supply safety detector Effective date of registration: 20191203 Granted publication date: 20140430 Pledgee: Bank of Dezhou Limited by Share Ltd. Road 38 branch Pledgor: SHANDONG KOUGIN LIGHTING TECHNOLOGY CO.,LTD. Registration number: Y2019990000649 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 |