CN203949963U - A kind of two pincers digit phase volt ampere meter - Google Patents
A kind of two pincers digit phase volt ampere meter Download PDFInfo
- Publication number
- CN203949963U CN203949963U CN201420153717.5U CN201420153717U CN203949963U CN 203949963 U CN203949963 U CN 203949963U CN 201420153717 U CN201420153717 U CN 201420153717U CN 203949963 U CN203949963 U CN 203949963U
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- China
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- pincers
- electrically connected
- volt ampere
- ampere meter
- circuit
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Abstract
The utility model discloses a kind of two pincers digit phase volt ampere meter, comprise guidance panel; On described guidance panel, be provided with connection terminal and operation push-button; Described connection terminal comprises power input, voltage tester port and testing current port; Described voltage tester port is by resistance in series and mutual inductor and receive in circuit under test; Described testing current port is concatenated in circuit under test by mutual inductor; Described operation keyboard is electrically connected on microprocessor; Described microprocessor is also electrically connected with LCDs, power supply and storer; Described power supply is electrically connected with clock circuit.Two pincers digit phase volt ampere meter of the present utility model, adopts split core type current transformer conversion regime to input tested electric current, thus while measuring without disconnecting test line; While measuring between U1-U2 phase place, the isolation of insulating completely of two input circuits, has therefore avoided test line short circuit that the mis-wired that may occur causes completely, has consequently burnt measurement instrument.
Description
Technical field
The utility model relates to a kind of two pincers digit phase volt ampere meter, belongs to tester technical field.
Background technology
Along with the progress of modern society, day by day increasing of household electrical appliance, also further strict to the specifications parameter requirement of electrical equipment, and in these parameters, modal is exactly the measurement of voltage, electric current.Multimeter is called again multi-meter, multimeter, avometer, numerous table etc. of using at present, is divided into pointer multimeter and digital multimeter by display mode.The fundamental measurement principle of multimeter is that employing is that a sensitive magneto-electric DC ammeter (microampere meter) is done gauge outfit, when Weak current is by gauge outfit, just has electric current instruction.But gauge outfit can not be led to super-high-current, so, must in gauge outfit, shunt or step-down by some resistance of parallel connection and serial connection, thereby measure electric current, voltage and the resistance in circuit.But while measuring electric current by this measuring method, need to disconnect metering circuit, multimeter is connected in series in circuit, for some complicated circuit, easily connection error, and, cannot realize the measurement of double-channel signal; Therefore,, for overcoming the above problems, urgently research and develop a kind of new two pincers digit phase volt ampere meters.
Summary of the invention
(1) technical matters that will solve
In order to address the above problem, the utility model proposes a kind of simple to operate, easy to carry and without the two pincers digit phase volt ampere meters that disconnect test line.
(2) technical scheme
Two pincers digit phase volt ampere meter of the present utility model, comprises guidance panel; On described guidance panel, be provided with connection terminal and operation push-button; Described connection terminal comprises power input, voltage tester port and testing current port; Described voltage tester port is by resistance in series and mutual inductor and receive in circuit under test; Described testing current port is concatenated in circuit under test by mutual inductor; Described operation keyboard is electrically connected on microprocessor; Described microprocessor is also electrically connected with LCDs, power supply and storer; Described power supply is electrically connected with clock circuit.
Further, before described storer, be electrically connected with converter, be also electrically connected with phase-comparison circuit before described converter, the input end of described phase-comparison circuit is connected with voltage amplifier circuit, and described voltage amplifier circuit is electrically connected with the output terminal of holding circuit; Described holding circuit is connected electrically in the output terminal of mutual inductor.
Again further, described mutual inductor is current transformer.
Again further, described current transformer is sharp mouth type forceps type structure.
Further, described operation push-button comprises page turning key and acknowledgement key and types of functionality button composition up and down.
Preferably, the big screen LCD that described LCDs is 65*50.
Further, described power supply is charged lithium cells power supply.
Further, described clock circuit adopts 10000 years clock chips.
Preferably, described printer is VMP01 type mini-printer.
(3) beneficial effect
Compared with prior art, it has following beneficial effect to the utility model: two pincers digit phase volt ampere meters of the present utility model, adopt split core type current transformer conversion regime to input tested electric current, thus while measuring without disconnecting test line; While measuring between U1-U2 phase place, the isolation of insulating completely of two input circuits, has therefore avoided test line short circuit that the mis-wired that may occur causes completely, has consequently burnt measurement instrument.
Brief description of the drawings
Fig. 1 is inner structure block diagram of the present utility model;
Fig. 2 is panel construction schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, two pincers digit phase volt ampere meters of the present utility model, comprise guidance panel; On described guidance panel, be provided with connection terminal 6 and operation push-button; Described connection terminal comprises power input, voltage tester port and testing current port; Described voltage tester port is by resistance in series R and mutual inductor T1 and receive on circuit under test X1; Described testing current port is concatenated on circuit under test X2 by mutual inductor T2; Described operation keyboard is electrically connected on microprocessor; Described microprocessor is also electrically connected with LCDs 2, power supply and storer; Described power supply is electrically connected with clock circuit.
Before described storer, be electrically connected with converter, be also electrically connected with phase-comparison circuit before described converter, the input end of described phase-comparison circuit is connected with voltage amplifier circuit, and described voltage amplifier circuit is electrically connected with the output terminal of holding circuit; Described holding circuit is connected electrically in the output terminal of mutual inductor; Described mutual inductor is current transformer; Described current transformer 5 is sharp mouth type forceps type structure; Described operation push-button comprises that page turning key and acknowledgement key 3, power key 1 and types of functionality button 4 form up and down; The big screen LCD that described LCDs 2 is 65*50; Described power supply is charged lithium cells power supply; Described clock circuit adopts 10000 years clock chips; Described printer is VMP01 type mini-printer.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.
Claims (9)
1. two pincers digit phase volt ampere meters, is characterized in that: comprise guidance panel; On described guidance panel, be provided with connection terminal and operation push-button; Wherein said operation push-button is arranged on guidance panel, and described connection terminal comprises power input, voltage tester port and testing current port; Described voltage tester port is by resistance in series and mutual inductor and receive in circuit under test; Described testing current port is concatenated in circuit under test by mutual inductor; Described operation keyboard is electrically connected on microprocessor; Described microprocessor is also electrically connected with LCDs, printer, power supply and storer; Described power supply is electrically connected with clock circuit.
2. two pincers digit phase volt ampere meter according to claim 1, it is characterized in that: before described storer, be electrically connected with converter, before described converter, be also electrically connected with phase-comparison circuit, the input end of described phase-comparison circuit is connected with voltage amplifier circuit, and described voltage amplifier circuit is electrically connected with the output terminal of holding circuit; Described holding circuit is connected electrically in the output terminal of mutual inductor.
3. two pincers digit phase volt ampere meter according to claim 1 and 2, is characterized in that: described mutual inductor is current transformer.
4. two pincers digit phase volt ampere meter according to claim 3, is characterized in that: described current transformer is sharp mouth type forceps type structure.
5. two pincers digit phase volt ampere meter according to claim 1, is characterized in that: described operation push-button comprises page turning key and acknowledgement key and types of functionality button composition up and down.
6. two pincers digit phase volt ampere meter according to claim 1, is characterized in that: the big screen LCD that described LCDs is 65*50.
7. two pincers digit phase volt ampere meter according to claim 1, is characterized in that: described power supply is charged lithium cells power supply.
8. two pincers digit phase volt ampere meter according to claim 1, is characterized in that: described clock circuit adopts 10000 years clock chips.
9. two pincers digit phase volt ampere meter according to claim 1, is characterized in that: described printer is VMP01 type mini-printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153717.5U CN203949963U (en) | 2014-04-01 | 2014-04-01 | A kind of two pincers digit phase volt ampere meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420153717.5U CN203949963U (en) | 2014-04-01 | 2014-04-01 | A kind of two pincers digit phase volt ampere meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203949963U true CN203949963U (en) | 2014-11-19 |
Family
ID=51891991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420153717.5U Expired - Fee Related CN203949963U (en) | 2014-04-01 | 2014-04-01 | A kind of two pincers digit phase volt ampere meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203949963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008189A (en) * | 2017-12-25 | 2018-05-08 | 黑龙江龙电电气有限公司 | A kind of phase detection device and method |
-
2014
- 2014-04-01 CN CN201420153717.5U patent/CN203949963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108008189A (en) * | 2017-12-25 | 2018-05-08 | 黑龙江龙电电气有限公司 | A kind of phase detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |