CN202066910U - Device for measuring resistance, inductance and capacitance - Google Patents
Device for measuring resistance, inductance and capacitance Download PDFInfo
- Publication number
- CN202066910U CN202066910U CN201120163410XU CN201120163410U CN202066910U CN 202066910 U CN202066910 U CN 202066910U CN 201120163410X U CN201120163410X U CN 201120163410XU CN 201120163410 U CN201120163410 U CN 201120163410U CN 202066910 U CN202066910 U CN 202066910U
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- unit
- inductance
- low frequency
- resistance
- signal source
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Abstract
The utility model relates to a device for measuring an electrical element, in particular to a device for measuring resistance, inductance and capacitance. The device comprises a low-frequency signal source (1), wherein the low-frequency signal resource is connected with a resistor unit (2), an inductor unit (3) and a capacitor unit (4) in series sequentially to form a series circuit; single-pole double-throw switches (5) are respectively arranged at the joints of the series circuit and the resistor unit (2), the series circuit and the inductor unit (3) as well as the series circuit and the capacitor unit (4); the resistor unit (2) comprises a resistor box and a resistor fixer which are arranged side by side; the inductor unit (3) comprises an inductor box and an inductor fixer which are arranged side by side; the capacitor unit (4) comprises a capacitor box and a capacitor fixer which are arranged side by side; a first connection end (6) is arranged between the low-frequency signal source (1) and the resistor unit (2); a second connection end (7) is arranged between the resistor unit (2) and the inductor unit (3); a third connection end (8) is arranged between the inductor unit (3) and the capacitor unit (4); the device also comprises a low-frequency millivoltmeter (9), one end of the millivoltmeter (9) is arranged between the low-frequency signal source (1) and the capacitor unit (4), and the other end of the millivoltmeter (9) is provided with a single-pole three-throw switch (10); and the single-pole three-throw switch (10) can be switched among the first connection end (6), the second connection end (7) and the third connection end (8). The device can realize the function of measuring the resistance, the inductance and the capacitance.
Description
Technical field
The utility model relates to a kind of electric elements measurement mechanism, the device of particularly a kind of measuring resistance, inductance and electric capacity.
Background technology
Resistance, electric capacity and inductance are the electrical quantitys that electric slip-stick artist often will measure.Commercially available multimeter is generally only with measuring resistance, and capacitance meter generally can only be measured electric capacity and inductance, and they do not possess can measuring resistance the function of energy measurement electric capacity and inductance simultaneously.
The utility model content
The purpose of the utility model device is: overcome the deficiencies in the prior art, a kind of device of measuring resistance, inductance and electric capacity simple in structure is provided.
The scheme that the utility model solve the technical problem is: a kind of measuring resistance, the device of inductance and electric capacity, comprise low frequency signal source, low frequency signal source successively with resistance unit, inductance unit, the capacitor cell series connection forms series circuit, series circuit with resistance unit, inductance unit, the capacitor cell junction all is provided with single-pole double-throw switch (SPDT), resistance unit comprises resistance box and the resistance fixator that is arranged side by side, inductance unit comprises inductance box and the inductance fixator that is arranged side by side, capacitor cell comprises capacitive and the capacitor fixing device that is arranged side by side, pick out first link between low frequency signal source and the resistance unit, pick out second link between resistance unit and the inductance unit, pick out the 3rd link between inductance unit and the capacitor cell, this device also comprises the low frequency milivoltmeter, one end of low frequency milivoltmeter is arranged between low frequency signal source and the capacitor cell, the other end of low frequency milivoltmeter is provided with the single-pole triple-throw (SPTT) switch, and the single-pole triple-throw (SPTT) switch can be at first link, second link, switch between the 3rd link.
As further technical scheme, described low frequency milivoltmeter ground connection.
As further technical scheme, described low frequency signal source is the synthetic low frequency power signal generator of SP1651 type numeral.
Resistance fixator described in the utility model refers to be used for fixing the utensil of testing resistance, and after testing resistance was fixed on the resistance fixator, testing resistance was an access circuit.Those skilled in the art can according to the effect of resistance fixator not the needs creative work can design its structure.In like manner, for inductance fixator described in the utility model and capacitor fixing device, those skilled in the art also can act on not the needs creative work according to it can design its structure.
Low frequency signal source adopts the synthetic low frequency power signal generator of SP1651 type numeral, and its reference frequency output is 0.1Hz～200KHz, and its output amplitude is 10mV～20V, and its sine wave has the power output function, sinewave output power＞40W.
When this device was wanted measuring resistance, step was: (1) places testing resistance on the resistance fixator earlier, stirs single-pole double-throw switch (SPDT), makes low frequency signal source, resistance fixator, inductance box, capacitive constitute the loop; (2) the single-pole triple-throw (SPTT) switch is received second link, choose suitable inductance value L and capacitance C, make circuit be in resonant condition by the frequency of regulating low frequency signal source, the voltage of low frequency milivoltmeter demonstration at this moment is zero, the circuit resonance angular frequency
ω=1/
,
ωNumerical value show by the LCD screen of low frequency signal source; (3) the single-pole triple-throw (SPTT) switch is received first link, read the reading of low frequency milivoltmeter this moment, be designated as U
1(4) the single-pole triple-throw (SPTT) switch is received the 3rd link, read the reading of low frequency milivoltmeter this moment, be designated as U
2When circuit is in resonant condition, the quality factor q=ρ of circuit/R=U
2/ U
1, wherein ρ is characteristic impedance, its value for ρ=
, R is the resistance of testing resistance, in view of the above, can calculate the value of testing resistance
When this device was wanted inductance measuring, step was: (1) places inductance to be measured on the inductance fixator earlier, stirs single-pole double-throw switch (SPDT), makes low frequency signal source, resistance box, inductance fixator, capacitive constitute the loop; (2) the single-pole triple-throw (SPTT) switch is received second link, choose suitable resistance value R and capacitance C, make circuit be in resonant condition by the frequency of regulating low frequency signal source, the voltage of low frequency milivoltmeter demonstration at this moment is zero,
ωNumerical value show by the LCD screen of low frequency signal source, by
ω=1/
, can calculate the value of inductance L to be measured.
When this device will be measured electric capacity, step was: (1) places testing capacitance on the capacitor fixing device earlier, stirs single-pole double-throw switch (SPDT), makes low frequency signal source, resistance box, inductance box, capacitor fixing device constitute the loop; (2) the single-pole triple-throw (SPTT) switch is received second link, choose suitable resistance value R and inductance value L, make circuit be in resonant condition by the frequency of regulating low frequency signal source, the voltage of low frequency milivoltmeter demonstration at this moment is zero,
ωNumerical value show by the LCD screen of low frequency signal source, by
ω=1/
, can calculate the value of testing capacitance C.
The utility model can be finished the function of measuring resistance, inductance and electric capacity, and measuring method is simple, practical, and easy to use, cost is lower.The utility model can be used as the breadboard experimental facilities of school, also can be used as electrical work personnel's checkout equipment.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the device of a kind of measuring resistance, inductance and electric capacity, low frequency signal source 1 are connected with resistance unit 2, inductance unit 3, capacitor cell 4 successively and are formed series circuit, and low frequency signal source 1 is the synthetic low frequency power signal generator of SP1651 type numeral.Series circuit with resistance unit 2, inductance unit 3, capacitor cell 4 junctions all are provided with single-pole double-throw switch (SPDT) 5, resistance unit 2 comprises resistance box and the resistance fixator that is arranged side by side, inductance unit 3 comprises inductance box and the inductance fixator that is arranged side by side, capacitor cell 4 comprises capacitive and the capacitor fixing device that is arranged side by side, pick out first link 6 between low frequency signal source 1 and the resistance unit 2, pick out second link 7 between resistance unit 2 and the inductance unit 3, pick out the 3rd link 8 between inductance unit 3 and the capacitor cell 4, one end of low frequency milivoltmeter 9 is arranged between low frequency signal source 1 and the capacitor cell 4, the other end of low frequency milivoltmeter 9 is provided with single-pole triple-throw (SPTT) switch 10, single-pole triple-throw (SPTT) switch 10 can be at first link 6, second link 7, switch low frequency milivoltmeter 9 ground connection between the 3rd link 8.
Claims (3)
1. measuring resistance, the device of inductance and electric capacity, it is characterized in that: comprise low frequency signal source (1), low frequency signal source (1) successively with resistance unit (2), inductance unit (3), capacitor cell (4) series connection forms series circuit, series circuit with resistance unit (2), inductance unit (3), capacitor cell (4) junction all is provided with single-pole double-throw switch (SPDT) (5), resistance unit (2) comprises resistance box and the resistance fixator that is arranged side by side, inductance unit (3) comprises inductance box and the inductance fixator that is arranged side by side, capacitor cell (4) comprises capacitive and the capacitor fixing device that is arranged side by side, pick out first link (6) between low frequency signal source (1) and the resistance unit (2), pick out second link (7) between resistance unit (2) and the inductance unit (3), pick out the 3rd link (8) between inductance unit (3) and the capacitor cell (4), this device also comprises low frequency milivoltmeter (9), one end of low frequency milivoltmeter (9) is arranged between low frequency signal source (1) and the capacitor cell (4), the other end of low frequency milivoltmeter (9) is provided with single-pole triple-throw (SPTT) switch (10), and single-pole triple-throw (SPTT) switch (10) can be in first link (6), second link (7), switch between the 3rd link (8).
2. the device of a kind of measuring resistance as claimed in claim 1, inductance and electric capacity is characterized in that: described low frequency milivoltmeter (9) ground connection.
3. the device of a kind of measuring resistance as claimed in claim 1 or 2, inductance and electric capacity is characterized in that: described low frequency signal source (1) is the synthetic low frequency power signal generator of SP1651 type numeral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120163410XU CN202066910U (en) | 2011-05-20 | 2011-05-20 | Device for measuring resistance, inductance and capacitance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120163410XU CN202066910U (en) | 2011-05-20 | 2011-05-20 | Device for measuring resistance, inductance and capacitance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066910U true CN202066910U (en) | 2011-12-07 |
Family
ID=45060770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120163410XU Expired - Fee Related CN202066910U (en) | 2011-05-20 | 2011-05-20 | Device for measuring resistance, inductance and capacitance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066910U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439578A (en) * | 2013-08-30 | 2013-12-11 | 昆山奥德鲁自动化技术有限公司 | Impedance measurement circuit |
| CN103513210A (en) * | 2013-10-11 | 2014-01-15 | 内蒙古自治区计量测试研究院 | Inductance, capacitance and resistance standard device |
| CN105092982A (en) * | 2015-08-06 | 2015-11-25 | 延安大学 | Dielectric constant measurement circuit based on RLC series resonance circuit and method thereof |
| CN105572754A (en) * | 2016-01-20 | 2016-05-11 | 吉林大学 | Automatic measuring device for load parameters for geophysical prospecting, and measuring method thereof |
| CN105717369A (en) * | 2016-02-16 | 2016-06-29 | 常州同惠电子股份有限公司 | Method for using capacitance meter to measure cascade equivalent inductance of capacitance |
| CN109342827A (en) * | 2018-11-22 | 2019-02-15 | 湖南恩智测控技术有限公司 | A kind of circuit and method exchanging charge and discharge electrical measurement capacitance by capacitor |
-
2011
- 2011-05-20 CN CN201120163410XU patent/CN202066910U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439578A (en) * | 2013-08-30 | 2013-12-11 | 昆山奥德鲁自动化技术有限公司 | Impedance measurement circuit |
| CN103513210A (en) * | 2013-10-11 | 2014-01-15 | 内蒙古自治区计量测试研究院 | Inductance, capacitance and resistance standard device |
| CN105092982A (en) * | 2015-08-06 | 2015-11-25 | 延安大学 | Dielectric constant measurement circuit based on RLC series resonance circuit and method thereof |
| CN105572754A (en) * | 2016-01-20 | 2016-05-11 | 吉林大学 | Automatic measuring device for load parameters for geophysical prospecting, and measuring method thereof |
| CN105717369A (en) * | 2016-02-16 | 2016-06-29 | 常州同惠电子股份有限公司 | Method for using capacitance meter to measure cascade equivalent inductance of capacitance |
| CN109342827A (en) * | 2018-11-22 | 2019-02-15 | 湖南恩智测控技术有限公司 | A kind of circuit and method exchanging charge and discharge electrical measurement capacitance by capacitor |
| CN109342827B (en) * | 2018-11-22 | 2024-03-29 | 湖南恩智测控技术有限公司 | Circuit and method for measuring capacitance value through capacitance alternating current charge and discharge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120520 |