CN102680796A - Resistor measuring device by using method of equal effects - Google Patents
Resistor measuring device by using method of equal effects Download PDFInfo
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- CN102680796A CN102680796A CN2012101817716A CN201210181771A CN102680796A CN 102680796 A CN102680796 A CN 102680796A CN 2012101817716 A CN2012101817716 A CN 2012101817716A CN 201210181771 A CN201210181771 A CN 201210181771A CN 102680796 A CN102680796 A CN 102680796A
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- resistance
- throw switch
- resistor
- pole double
- pole
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Abstract
The invention discloses a resistor measuring device by using a method of equal effects. The device comprises an adjustable resistor, a measured resistor, a power source, a single-pole single-throw switch, a current limiting resistor, an ammeter and a single-pole double-throw switch. One end of the measured resistor is connected with one end of the adjustable resistor, and the connecting position is connected in series with the power source, the single-pole single-throw switch, the current limiting resistor, the ammeter and a constant contact of the single-pole double-throw switch successively; the other end of the measured resistor is connected with a first movable contact of the single-pole double-throw switch; the other end of the adjustable resistor is connected with a second movable contact of the single-pole double-throw switch; and the adjustable resistor is a standard resistor box. The resistor measuring device by using a method of equal effects is simple in structure, practical and convenient, and good for the accurate measuring of resistance values.
Description
Technical field
The present invention relates to a kind of electric resistance measuring apparatus, be specially a kind of measuring Resistance by Equivalent Test device.
Background technology
At present, the method for measuring resistance mainly contains voltammetry and multimeter resistance grade mensuration.The former needs measuring voltage and electric current simultaneously, owing to receive the influence of voltage meter or amp gauge internal resistance, measuring accuracy is limited; The latter is owing to receive the influence of the internal resistance of cell, and measurement result is also not accurate enough.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of measurement result measuring Resistance by Equivalent Test device comparatively accurately is provided.
To achieve these goals, the present invention takes following technical scheme:
A kind of measuring Resistance by Equivalent Test device; Comprise adjustable resistance, measured resistance, power supply, single-pole single-throw switch (SPST), current-limiting resistance, reometer and single-pole double-throw switch (SPDT); One end of said measured resistance is connected with an end of said adjustable resistance, and the junction is through be connected in series the successively fixed contact of said power supply, single-pole single-throw switch (SPST), current-limiting resistance, reometer and said single-pole double-throw switch (SPDT) of lead; First moving contact of the said single-pole double-throw switch (SPDT) of another termination of said measured resistance; Second moving contact of the said single-pole double-throw switch (SPDT) of another termination of said adjustable resistance.
Further, said adjustable resistance is a standard resistance box.
Measuring process and principle are following: the first step: closed said single-pole single-throw switch (SPST), and said single-pole double-throw switch (SPDT) beaten to first moving contact make said measured resistance place in circuit, read the reading of said reometer.Second step: said single-pole double-throw switch (SPDT) beaten to second moving contact make said adjustable resistance place in circuit, the resistance of regulating said adjustable resistance makes the reading of said reometer identical with the reading of first step measurement.This moment, said adjustable resistance was just in time equivalent with said measured resistance, recorded the resistance of said measured resistance thus.
The present invention has overcome the deficiency of traditional resistor mensuration owing to adopt above-mentioned design, and it is simple in structure, and is practical and convenient, helps the accurate measurement of resistance value.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described further.
Fig. 1 is circuit theory diagrams of the present invention.
Among the figure: 1. adjustable resistance, 2. measured resistance, 3. power supply, 4. single-pole single-throw switch (SPST), 5. current-limiting resistance, 6. reometer, 7. single-pole double-throw switch (SPDT), 8. first moving contact, 9. second moving contact.
Embodiment
As shown in Figure 1; Measuring Resistance by Equivalent Test device of the present invention comprises adjustable resistance 1, measured resistance 2, power supply 3, single-pole single-throw switch (SPST) 4, current-limiting resistance 5, reometer 6 and single-pole double-throw switch (SPDT) 7; One end of measured resistance 2 links to each other with an end of adjustable resistance 1, and the junction is connected in series with the fixed contact of power supply 3, single-pole single-throw switch (SPST) 4, current-limiting resistance 5, reometer 6 and single-pole double-throw switch (SPDT) 7 through lead successively; First moving contact 8 of the other end order double-pole double throw switch of measured resistance 2; Second moving contact 9 of the other end order double-pole double throw switch of adjustable resistance 1.
Current-limiting resistance 5 is used for the size of control circuit electric current, prevents that the electric current in the circuit is excessive.
Concrete measure in two steps the first step: closed single-pole single-throw switch (SPST) 4,7 dozens of single-pole double-throw switch (SPDT)s to first moving contact 8 is made measured resistance 2 places in circuit, read the reading of reometer 6 this moment.Second step: 7 dozens of single-pole double-throw switch (SPDT)s to second moving contact 9 is made adjustable resistance 1 place in circuit, regulate the resistance of adjustable resistance 1, make the reading of reometer 6 identical with the reading of first step measurement.Read the resistance of adjustable resistance 1 this moment, this resistance is the resistance of measured resistance 2.
Claims (2)
1. measuring Resistance by Equivalent Test device; It is characterized in that: comprise adjustable resistance, measured resistance, power supply, single-pole single-throw switch (SPST), current-limiting resistance, reometer and single-pole double-throw switch (SPDT); One end of said measured resistance is connected with an end of said adjustable resistance, and the junction is through be connected in series the successively fixed contact of said power supply, single-pole single-throw switch (SPST), current-limiting resistance, reometer and said single-pole double-throw switch (SPDT) of lead; First moving contact of the said single-pole double-throw switch (SPDT) of another termination of said measured resistance; Second moving contact of the said single-pole double-throw switch (SPDT) of another termination of said adjustable resistance.
2. measuring Resistance by Equivalent Test device according to claim 1 is characterized in that: said adjustable resistance is a standard resistance box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101817716A CN102680796A (en) | 2012-06-01 | 2012-06-01 | Resistor measuring device by using method of equal effects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101817716A CN102680796A (en) | 2012-06-01 | 2012-06-01 | Resistor measuring device by using method of equal effects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102680796A true CN102680796A (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101817716A Pending CN102680796A (en) | 2012-06-01 | 2012-06-01 | Resistor measuring device by using method of equal effects |
Country Status (1)
| Country | Link |
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| CN (1) | CN102680796A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199093A (en) * | 2016-09-26 | 2016-12-07 | 华侨大学 | A kind of Large Copacity tunable load device |
| CN109358236A (en) * | 2018-10-16 | 2019-02-19 | Oppo广东移动通信有限公司 | For measuring the circuit and method of resistance |
-
2012
- 2012-06-01 CN CN2012101817716A patent/CN102680796A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199093A (en) * | 2016-09-26 | 2016-12-07 | 华侨大学 | A kind of Large Copacity tunable load device |
| CN106199093B (en) * | 2016-09-26 | 2022-12-06 | 华侨大学 | Large-capacity adjustable load device |
| CN109358236A (en) * | 2018-10-16 | 2019-02-19 | Oppo广东移动通信有限公司 | For measuring the circuit and method of resistance |
| CN109358236B (en) * | 2018-10-16 | 2022-01-07 | Oppo广东移动通信有限公司 | Circuit and method for measuring resistance |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120919 |