CN203606694U - Current detector for circuit board - Google Patents
Current detector for circuit board Download PDFInfo
- Publication number
- CN203606694U CN203606694U CN201320645241.2U CN201320645241U CN203606694U CN 203606694 U CN203606694 U CN 203606694U CN 201320645241 U CN201320645241 U CN 201320645241U CN 203606694 U CN203606694 U CN 203606694U
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- circuit
- power supply
- current
- wiring board
- test circuit
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Abstract
The utility model provides a current detector for a circuit board, and belongs to the technical field of electronics. The problem that a conventional control circuit board of a water pump lacks test equipment is solved. The current detector for the circuit board is used for testing a current induction circuit board of the water pump, and comprises a power supply, a test circuit and a power supply circuit, the test circuit and the power supply circuit are both connected with the power supply, the test circuit and the power supply circuit are connected in parallel, output terminals of the test circuit and the power supply circuit are respectively and correspondingly connected with the circuit board, the test circuit comprises a step-down transformer, a current regulating unit, and an ammeter connected in series in sequence, the step-down transformer can reduce the input voltage of the power supply, the current regulating unit can regulate the output current of the test circuit, the ammeter can detect the output current of the test circuit, and a primary coil of the step-down transformer is connected with an output terminal of the power supply. The current detector for the circuit board is advantaged by small size, low energy consumption, and high usage security.
Description
Technical field
The utility model belongs to electronic technology field, relates 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 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., also can carry liquid, gaseous mixture and the liquid containing 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, is realized equally by control circuit board.But, in the batch production of control circuit board, have unavoidably underproof control circuit board and produce, for guaranteeing that the control circuit board dispatching from the factory is specification product, designing a kind of is very necessary for the whether qualified testing apparatus of testing to control circuit board.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of wiring board current detecting instrument that can test for the current anomaly defencive function of the control circuit board of water pump.
The purpose of this utility model 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 and the feed circuit that are all connected with power supply, described test circuit is in parallel with feed circuit and both output terminals are respectively used to be connected corresponding with above-mentioned wiring board, 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 current regulation unit of output current size in test circuit can be regulated and the reometer of the output current size in test circuit can be detected, the primary coil of described step-down transformer is connected with the output terminal of above-mentioned power supply.
When 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, by regulating the current regulation unit in test circuit to change the electric current being input in wiring board.Judge the duty of wiring board by the variation of observing the pilot lamp for display working condition having had on wiring board, and then judge whether it normally 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 isolating transformer, 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 being series in above-mentioned test circuit.
Compared with prior art, this wiring board current detecting instrument has the following advantages:
1, in test circuit, adopt step-down design, make this detector when the required electric current of test can be provided, also reduce the situation such as volume, power consumption and heating of equipment.
2, in feed circuit, adopt isolating transformer that high-voltage power supply (civil power) is kept apart, guaranteed operating personnel's safety.
Accompanying drawing explanation
Fig. 1 is the theory diagram of this wiring board current detecting instrument.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model 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 the power switch of output of power supply and test circuit and the feed circuit that are all connected with power switch, 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 showing, the primary coil of step-down transformer is connected with the output terminal of power supply by power switch.Feed circuit comprise isolating transformer, 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, power acquisition civil power, can connect by connection-peg is set; Current regulation unit comprises adjustable resistor and the Power Resistor of mutual series connection; Test circuit place is also in series with the current switch that can control its break-make.If desired, also can arrange at 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 Power Resistor place.
When 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, carrys 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 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 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 be lighted; If after-current was still less than 3A in 3 minutes, run indicator changes red colored lamp into and lights, and determines lost efficacy (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 normally 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 utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements 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 (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 and the feed circuit that are all connected with power supply, described test circuit is in parallel with feed circuit and both output terminals are respectively used to be connected corresponding with above-mentioned wiring board, 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 current regulation unit of output current size in test circuit can be regulated and the reometer of the output current size in test circuit can be detected, 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 isolating transformer, 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 the wiring board current detecting instrument described in claim 1 or 2 or 3, it is characterized in that, described current regulation unit comprises adjustable resistor and the Power Resistor of mutual series connection.
5. according to the wiring board current detecting instrument described in claim 1 or 2 or 3, 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 being series in above-mentioned test circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645241.2U CN203606694U (en) | 2013-10-18 | 2013-10-18 | Current detector for circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645241.2U CN203606694U (en) | 2013-10-18 | 2013-10-18 | Current detector for circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203606694U true CN203606694U (en) | 2014-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320645241.2U Expired - Fee Related CN203606694U (en) | 2013-10-18 | 2013-10-18 | Current detector for circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203606694U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499970A (en) * | 2013-10-18 | 2014-01-08 | 利欧集团股份有限公司 | Circuit board current detector |
| CN107607856A (en) * | 2017-09-20 | 2018-01-19 | 胡君分 | A kind of circuit board for testing intelligent self priming pump circuit board |
-
2013
- 2013-10-18 CN CN201320645241.2U patent/CN203606694U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499970A (en) * | 2013-10-18 | 2014-01-08 | 利欧集团股份有限公司 | Circuit board current detector |
| CN107607856A (en) * | 2017-09-20 | 2018-01-19 | 胡君分 | A kind of circuit board for testing intelligent self priming pump circuit board |
| CN107607856B (en) * | 2017-09-20 | 2019-10-15 | 永嘉智瓯科技有限公司 | A kind of circuit board for testing intelligent self priming pump circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160329 Address after: Wenling City, the Eastern Industrial Agglomeration in Zhejiang province Taizhou city 317500 District Third Street No. 1 Patentee after: LEO GROUP ZHEJIANG PUMP INDUSTRY CO., LTD. Address before: The coastal town of Leo road in Wenling city 317503 Taizhou city in Zhejiang province No. 1 Patentee before: LEO Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20171018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |