CN103499970A - Circuit board current detector - Google Patents
Circuit board current detector Download PDFInfo
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- CN103499970A CN103499970A CN201310491140.9A CN201310491140A CN103499970A CN 103499970 A CN103499970 A CN 103499970A CN 201310491140 A CN201310491140 A CN 201310491140A CN 103499970 A CN103499970 A CN 103499970A
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- wiring board
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Abstract
The invention provides a circuit board current detector and belongs to the technical field of electrons. The circuit board current detector solves the problem that an existing water pump control circuit board is short of testing equipment. The circuit board current detector is used for testing a current induction circuit board of a water pump. The detector comprises a power supply and a testing circuit and a power supply circuit both which are connected with the power supply. The testing circuit is connected in parallel with the power supply circuit and the output ends of the testing circuit and the power supply circuit are respectively used for being correspondingly connected with the circuit board. The testing circuit comprises a step-down transformer, a current regulation unit and an ammeter, wherein the step-down transformer, the current regulation unit and the ammeter are sequentially connected in series; the step-down transformer can reduce an input voltage of the power supply; the current regulation unit can regulate an output current in the testing circuit; and the ammeter can detect the output current in the testing circuit. A primary coil of the step-down transformer is connected with the output end of the power supply. The circuit board current detector has the advantages of small volume, low energy consumption and high use safety.
Description
Technical field
The invention belongs to electronic technology field, relate to a kind of detector, particularly a kind of wiring board current detecting instrument.
Background technology
Water pump is the machinery of carrying liquid or making the liquid supercharging.It sends the mechanical energy of prime mover or other external energies to liquid, liquid energy is increased, be mainly used to carry liquid to comprise water, oil, acid & alkali liquid, emulsion, suspended emulsion and liquid metal etc., the liquid that also can carry liquid, gaseous mixture and contain suspended solids.
The work of intelligent water pump is controlled by a control circuit board, comprises the functions such as current anomaly protection in its course of work, by control circuit board, is realized equally.Yet, in the batch production of control circuit board, have unavoidably underproof control circuit board and produce, for guaranteeing the control circuit board dispatched from the factory, be specification product, designing a kind of is very necessary for the whether qualified testing apparatus of being tested to control circuit board.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, proposed a kind of wiring board current detecting instrument that can be tested for the current anomaly defencive function of the control circuit board of water pump.
Purpose of the present invention can realize by following technical proposal:
A kind of wiring board current detecting instrument, for testing the electric current inductive circuit board of water pump, described detector comprises power supply and the test circuit all be connected with power supply and feed circuit, described test circuit is in parallel with feed circuit and both output terminals are respectively used to be connected with above-mentioned wiring board is corresponding, it is characterized in that, described test circuit comprises the step-down transformer of the input voltage that can reduce power supply of series connection successively, the reometer that can regulate the current regulation unit of output current size in test circuit and can detect the output current size in test circuit, the primary coil of described step-down transformer is connected with the output terminal of above-mentioned power supply.
During test, the corresponding connection of power interface by feed circuit with wiring board, by test circuit and the corresponding connection of working interface on wiring board, carry out the load of analog equipment with this detector, change by the current regulation unit of regulating in test circuit the electric current be input in wiring board.Judge the duty of wiring board by the variation of observing the pilot lamp for display working condition had on wiring board, and then judge whether it works, whether qualified.Wherein, step-down transformer reduces the input voltage of power supply, makes in test circuit, and under same electric current, the resistance as load of required setting is less, and energy loss is less.
In above-mentioned wiring board current detecting instrument, described feed circuit comprise the isolation voltage device, the connection corresponding to the output terminal of above-mentioned power supply of the primary coil of this isolating transformer, and its secondary coil is for connection corresponding to above-mentioned wiring board.The setting of isolating transformer can be kept apart high-voltage power supply, guarantees operating personnel's safety.
As another kind of situation, in above-mentioned wiring board current detecting instrument, described feed circuit comprise a fuse.
In above-mentioned wiring board current detecting instrument, described current regulation unit comprises adjustable resistor and the Power Resistor of mutual series connection.
As another kind of situation, in above-mentioned wiring board current detecting instrument, described current regulation unit comprises adjustable resistor parallel with one another and Power Resistor.
In above-mentioned wiring board current detecting instrument, described detector also comprises the power switch that can control the connecting and disconnecting of the circuit of above-mentioned test circuit and feed circuit of the output that is series at above-mentioned power supply.
In above-mentioned wiring board current detecting instrument, described detector also comprises the current switch that can control its break-make be series in above-mentioned test circuit.
Compared with prior art, this wiring board current detecting instrument has the following advantages:
1, adopt the step-down design in test circuit, make this detector also reduce the situations such as volume, power consumption and heating of equipment when the required electric current of test can be provided.
2, in feed circuit, adopt isolating transformer that high-voltage power supply (civil power) is kept apart, guaranteed operating personnel's safety.
The accompanying drawing explanation
Fig. 1 is the theory diagram of this wiring board current detecting instrument.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiment.
As shown in Figure 1, this wiring board current detecting instrument is for testing the electric current inductive circuit board of water pump, comprise power supply, be series at power switch and the test circuit all be connected with power switch and the feed circuit of the output of power supply, test circuit is in parallel with feed circuit and both output terminals are respectively used to be connected corresponding with wiring board.
Wherein, test circuit comprise successively the input voltage that can reduce power supply of series connection step-down transformer, can regulate the current regulation unit of output current size in test circuit and can detect the output current size in test circuit the reometer shown, the primary coil of step-down transformer is connected with the output terminal of power supply by power switch.Feed circuit comprise the isolation voltage device, and the primary coil of this isolating transformer is the corresponding connection of output terminal with power supply by power switch, and its secondary coil is for connection corresponding to wiring board.
In the present embodiment, the power acquisition civil power, can be connected by connection-peg is set; Current regulation unit comprises adjustable resistor and the Power Resistor of mutual series connection; The test circuit place also is in series with the current switch that can control its break-make.In case of necessity, also can arrange at the test circuit place one and can switch the high low switch of electric current of its high electric current or low current output, as by electric current height switch in parallel in the Power Resistor place.
During test, the corresponding connection of power interface by feed circuit with wiring board, by test circuit and the corresponding connection of working interface on wiring board, carry out the load of analog equipment with this detector.Here, connect for convenience and avoid wrong and connect, can be by the colour of insulated conductor of the negative pole output line of the anodal output line of the anodal output line of feed circuit, test circuit and this detector with interface on wiring board or be connected wire and be mapped.
Be communicated with civil power by connection-peg, open the high low switch of power switch, current switch and electric current of detector, regulate adjustable resistor, make reometer show that electric current is 3.3A, now, the power light on wiring board is lighted, and the run indicator point gives a green light.
The high low switch of close current or current switch, make the demonstration of reometer lower than 3A, and wherein, when the high low switch of electric current is closed, reometer is shown as the 2.8A left and right, and when current switch cuts out, reometer is shown as 0A.
Now, the power light on wiring board is still lighted, and run indicator changes orange lamp flicker into.If the high low switch of firing current switch and electric current in 3 minutes, electric current is greater than 3A again, and run indicator changes green light again into to be lighted; If after-current still was less than 3A in 3 minutes, run indicator changes red colored lamp into and lights, and determines lost efficacy (the entered function protection need be restarted circuit).
Like this, can judge the duty of wiring board by observing the power light that had on wiring board and the variation of run indicator, and then judge whether it works, whether qualified.
In addition, feed circuit also can comprise a fuse; Current regulation unit can comprise adjustable resistor parallel with one another and Power Resistor.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (7)
1. a wiring board current detecting instrument, for testing the electric current inductive circuit board of water pump, described detector comprises power supply and the test circuit all be connected with power supply and feed circuit, described test circuit is in parallel with feed circuit and both output terminals are respectively used to be connected with above-mentioned wiring board is corresponding, it is characterized in that, described test circuit comprises the step-down transformer of the input voltage that can reduce power supply of series connection successively, the reometer that can regulate the current regulation unit of output current size in test circuit and can detect the output current size in test circuit, the primary coil of described step-down transformer is connected with the output terminal of above-mentioned power supply.
2. wiring board current detecting instrument according to claim 1, it is characterized in that, described feed circuit comprise the isolation voltage device, the connection corresponding to the output terminal of above-mentioned power supply of the primary coil of this isolating transformer, and its secondary coil is for connection corresponding to above-mentioned wiring board.
3. wiring board current detecting instrument according to claim 1, is characterized in that, described feed circuit comprise a fuse.
4. according to claim 1 or 2 or 3 described wiring board current detecting instruments, it is characterized in that, described current regulation unit comprises adjustable resistor and the Power Resistor of mutual series connection.
5. according to claim 1 or 2 or 3 described wiring board current detecting instruments, it is characterized in that, described current regulation unit comprises adjustable resistor parallel with one another and Power Resistor.
6. wiring board current detecting instrument according to claim 1, is characterized in that, described detector also comprises the power switch that can control the connecting and disconnecting of the circuit of above-mentioned test circuit and feed circuit of the output that is series at above-mentioned power supply.
7. wiring board current detecting instrument according to claim 1, is characterized in that, described detector also comprises the current switch that can control its break-make be series in above-mentioned test circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491140.9A CN103499970A (en) | 2013-10-18 | 2013-10-18 | Circuit board current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310491140.9A CN103499970A (en) | 2013-10-18 | 2013-10-18 | Circuit board current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103499970A true CN103499970A (en) | 2014-01-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310491140.9A Pending CN103499970A (en) | 2013-10-18 | 2013-10-18 | Circuit board current detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN103499970A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137319A (en) * | 2015-08-11 | 2015-12-09 | 成都思邦力克科技有限公司 | Accelerometer circuit board testing terminal |
| CN109826782A (en) * | 2019-01-15 | 2019-05-31 | 芜湖飞龙汽车电子技术研究院有限公司 | For the Double-station type malfunction elimination device of electronic water pump for automobile control panel |
| CN110907789A (en) * | 2019-11-25 | 2020-03-24 | 歌尔股份有限公司 | Device testing method and device and electronic equipment |
| CN117517948A (en) * | 2024-01-08 | 2024-02-06 | 深圳市精科睿精密制品有限公司 | Circuit board detection circuit |
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| CN2122395U (en) * | 1992-05-19 | 1992-11-18 | 左孝臣 | Multifunctional electronic circuit tester |
| JP2003194859A (en) * | 2001-12-25 | 2003-07-09 | Hakusan Mfg Co Ltd | Current detecting circuit |
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| CN201637807U (en) * | 2010-04-20 | 2010-11-17 | 温州出入境检验检疫技术中心 | Power frequency leakage current tester |
| CN202083768U (en) * | 2011-05-19 | 2011-12-21 | 厦门巨益科技有限公司 | Current tester |
| CN202119856U (en) * | 2011-05-30 | 2012-01-18 | 北京豪锐达科技有限公司 | Simulation test apparatus for overhead high voltage circuit grounding short circuit fault |
| CN202563045U (en) * | 2012-05-28 | 2012-11-28 | 李宗跃 | Right-or-wrong judgment display for wiring of indoor single-phase three-hole socket |
| CN202614806U (en) * | 2012-05-23 | 2012-12-19 | 广州威能机电有限公司 | Direct current electronic load device |
| CN103105555A (en) * | 2013-01-25 | 2013-05-15 | 上杭祥辉电子有限公司 | Product aging tester |
| CN203606694U (en) * | 2013-10-18 | 2014-05-21 | 利欧集团股份有限公司 | Current detector for circuit board |
-
2013
- 2013-10-18 CN CN201310491140.9A patent/CN103499970A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2122395U (en) * | 1992-05-19 | 1992-11-18 | 左孝臣 | Multifunctional electronic circuit tester |
| JP2003194859A (en) * | 2001-12-25 | 2003-07-09 | Hakusan Mfg Co Ltd | Current detecting circuit |
| CN201503474U (en) * | 2009-09-25 | 2010-06-09 | 东莞市大忠电子有限公司 | Adapter output line swing detector |
| CN201637807U (en) * | 2010-04-20 | 2010-11-17 | 温州出入境检验检疫技术中心 | Power frequency leakage current tester |
| CN202083768U (en) * | 2011-05-19 | 2011-12-21 | 厦门巨益科技有限公司 | Current tester |
| CN202119856U (en) * | 2011-05-30 | 2012-01-18 | 北京豪锐达科技有限公司 | Simulation test apparatus for overhead high voltage circuit grounding short circuit fault |
| CN202614806U (en) * | 2012-05-23 | 2012-12-19 | 广州威能机电有限公司 | Direct current electronic load device |
| CN202563045U (en) * | 2012-05-28 | 2012-11-28 | 李宗跃 | Right-or-wrong judgment display for wiring of indoor single-phase three-hole socket |
| CN103105555A (en) * | 2013-01-25 | 2013-05-15 | 上杭祥辉电子有限公司 | Product aging tester |
| CN203606694U (en) * | 2013-10-18 | 2014-05-21 | 利欧集团股份有限公司 | Current detector for circuit board |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137319A (en) * | 2015-08-11 | 2015-12-09 | 成都思邦力克科技有限公司 | Accelerometer circuit board testing terminal |
| CN109826782A (en) * | 2019-01-15 | 2019-05-31 | 芜湖飞龙汽车电子技术研究院有限公司 | For the Double-station type malfunction elimination device of electronic water pump for automobile control panel |
| CN109826782B (en) * | 2019-01-15 | 2024-04-02 | 芜湖飞龙汽车电子技术研究院有限公司 | Double-station fault checking device for automobile electronic water pump control panel |
| CN110907789A (en) * | 2019-11-25 | 2020-03-24 | 歌尔股份有限公司 | Device testing method and device and electronic equipment |
| CN117517948A (en) * | 2024-01-08 | 2024-02-06 | 深圳市精科睿精密制品有限公司 | Circuit board detection circuit |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140108 |