CN203881851U - Device for measuring resistance value of component - Google Patents
Device for measuring resistance value of component Download PDFInfo
- Publication number
- CN203881851U CN203881851U CN201420235758.9U CN201420235758U CN203881851U CN 203881851 U CN203881851 U CN 203881851U CN 201420235758 U CN201420235758 U CN 201420235758U CN 203881851 U CN203881851 U CN 203881851U
- Authority
- CN
- China
- Prior art keywords
- reometer
- resistance value
- ammeter
- series
- variohm
- 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
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model provides a device for measuring resistance value of a component. The device is characterized by comprising a variable resistor, a direct current power source, a first ammeter, a second ammeter, a switch and a direct current power source protection circuit, wherein the first ammeter is connected with the variable resistor in series, the second ammeter is connected with a measured component in series, the variable resistor connected with the first ammeter in series and the measured component connected with the second ammeter in series are connected in parallel, one end of the direct current power source is connected with the switch and the direct current power source protection circuit in series, the other end of the direct current power source is connected with the variable resistor and the measured component, and the other end of the switch is connected with the first ammeter and the second ammeter. The device for measuring resistance value of the component provided by the utility model is advantaged by simple structure, low cost, portability, simple operation, and accurate measurement results.
Description
Technical field
The utility model relates to fields of measurement, in particular to a kind of device of the resistance value for measurement component.
Background technology
For testing circuit state, especially whether testing circuit occurs opening circuit or parts contact condition, is a kind of conventional technological means by detection resistance value.In addition, the simple and easy method of the quality of some parts judgement is also to realize by measured resistance value.For example, in electric system, cable is as the most basic ingredient of supply station and electric line, and the quality of its quality is related to the normal work whether supply station can be lasting.And the resistance value of cable is a key factor that determines its quality.Therefore, be sought after a kind of operate simple and easy, be easy to carry and the device of the resistance value for measurement component that measuring accuracy is high.
Utility model content
The utility model provides a kind of device of the resistance value for measurement component, it is characterized in that, comprise: variohm, the first reometer, the second reometer, switch, direct supply, direct supply holding circuit, the first reometer is connected in series variohm, the second reometer is connected in series unit under test, the variohm of connecting with the first reometer and the unit under test of connecting with the second reometer are for being connected in parallel, one end of direct supply is connected in series described direct supply holding circuit and described switch, the other end of direct supply is connected to respectively variohm and unit under test, the other end of described switch is connected to respectively the first reometer and the second reometer.
Wherein said variohm is resistance box or slide rheostat.
Wherein the first reometer and the second reometer are identical reometers.
The device of the resistance value of the measurement component providing according to the utility model, its have simple in structure, cost is low, is easy to carry, operates simple and easy and measurement result advantage accurately.
Brief description of the drawings
Fig. 1 is the structural representation of the device of the resistance value of measurement component of the present utility model.
Embodiment
Fig. 1 has schematically shown the structure of the device of the resistance value of measurement component of the present utility model.As shown in the figure, the device of the resistance value of measurement component of the present utility model comprises: variohm 1, the first reometer 4, the second reometer 5, switch, direct supply, direct supply holding circuit 3, and described the first reometer 4 is connected in series variohm 1; The second reometer 5 is connected in series unit under test 2; The variohm 1 of connecting with the first reometer and the unit under test 2 of connecting with the second reometer are for being connected in parallel; One end of direct supply is connected in series described direct supply holding circuit and described switch, and the other end of direct supply is connected to respectively variohm 1 and unit under test 2, and the other end of described switch is connected to respectively the first reometer 4 and the second reometer 5.
Unit under test 2 is exactly the parts that need measured resistance value.
Described parts can be cables.
Described variohm 1 can be resistance box or slide rheostat.
The first reometer 4 and the second reometer 5 are identical reometer.
The range of reometer can be selected according to actual needs, for example, can be the range of arbitrary size between 1A-50A.
The size of direct supply also can be selected according to actual needs, for example, can in output voltage is 3V-100V and the output current scope that is 0.1A-50A, select arbitrarily.
Described direct supply holding circuit can be any holding circuit well known in the art.The simplest holding circuit can be that size for control circuit electric current is to prevent the excessive resistor of electric current in circuit; Also can be fuse burning for capable of preventing short circuit in device etc.
In operation, by regulating variohm 1, make the first reometer 4 identical with the reading of the second reometer 5, the resistance value showing on variohm 1 is like this exactly the resistance value of unit under test 2.
That device of the present utility model has advantages of is simple in structure, easy to use, measurement result is accurate, cost is low, is suitable as very much electrical repair personnel's checkout equipment.
Claims (3)
1. the device for the resistance value of measurement component, it is characterized in that, comprise: variohm, the first reometer, the second reometer, switch, direct supply, direct supply holding circuit, the first reometer is connected in series variohm, the second reometer is connected in series unit under test, the variohm of connecting with the first reometer and the unit under test of connecting with the second reometer are for being connected in parallel, one end of direct supply is connected in series described direct supply holding circuit and described switch, the other end of direct supply is connected to respectively variohm and unit under test, the other end of described switch is connected to respectively the first reometer and the second reometer.
2. the device of the resistance value for measurement component according to claim 1, is characterized in that, described variohm is resistance box or slide rheostat.
3. the device of the resistance value for measurement component according to claim 1, is characterized in that, the first reometer and the second reometer are identical reometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235758.9U CN203881851U (en) | 2014-05-08 | 2014-05-08 | Device for measuring resistance value of component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420235758.9U CN203881851U (en) | 2014-05-08 | 2014-05-08 | Device for measuring resistance value of component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881851U true CN203881851U (en) | 2014-10-15 |
Family
ID=51682336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420235758.9U Expired - Fee Related CN203881851U (en) | 2014-05-08 | 2014-05-08 | Device for measuring resistance value of component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203881851U (en) |
-
2014
- 2014-05-08 CN CN201420235758.9U patent/CN203881851U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20160508 |