CN202563013U - Experimental device for measuring inductance - Google Patents
Experimental device for measuring inductance Download PDFInfo
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- CN202563013U CN202563013U CN2012201604448U CN201220160444U CN202563013U CN 202563013 U CN202563013 U CN 202563013U CN 2012201604448 U CN2012201604448 U CN 2012201604448U CN 201220160444 U CN201220160444 U CN 201220160444U CN 202563013 U CN202563013 U CN 202563013U
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- inductance
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Abstract
The utility model discloses an experimental device for measuring an inductance. The experimental device comprises a signal generator, an inductance measuring instrument, an oscilloscope, an adjustable resistor and an inductance to be measured, wherein a signal input interface, a resistor interface, an inductance interface, an output interface of voltage of the end of the resistor and an output interface of voltage of the end of the inductance are arranged on the inductance measuring instrument. The experimental device for measuring an inductance is simple in operation, high in practicability and convenience, and the measuring efficiency of the inductance can be improved.
Description
Technical field
The utility model belongs to Physical Experiment surveying instrument field, relates to a kind of measurement mechanism of electronic component parameter, is specially a kind of experimental provision of inductance measuring.
Background technology
Inductor is a large amount of basic electronic components that use in the electronic equipment.Inductance is the important parameter of inductor.The normal alternating current bridge method that adopts is surveyed inductance in the Physical Experiment; Though this method is comparatively accurate; But to the inductor of different quality factors, the structure of electric bridge is different, need adjust alternating current bridge repeatedly in the experiment simultaneously and make it to reach accurate balance; Practical operation comparatively bothers, and the student independently accomplishes certain difficulty.
The utility model content
The technical matters that the utility model will solve provides a kind of experimental provision that can be convenient for measuring inductance.
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
The experimental provision of a kind of inductance measuring of the utility model comprises signal generator, inductance measuring meter, oscillograph, adjustable resistance and inductance to be measured; Said inductance measuring meter is provided with signal input interface, resistance interface, inductive interface, resistance terminal voltage output interface and inductance terminal voltage output interface; Said resistance interface links to each other with said adjustable resistance through lead; Said inductive interface links to each other with said inductance to be measured through lead; Said signal input interface connects the signal output part of said signal generator with lead, and said resistance terminal voltage output interface is connected said oscillographic signal input part with lead respectively with said inductance terminal voltage output interface; Said resistance interface links to each other with said resistance terminal voltage output interface through lead; Said inductive interface links to each other with said inductance terminal voltage output interface through lead, connects the signal input interface of said inductance measuring meter after said resistance interface and said inductive interface are connected in series.
The signal that said signal generator sends is the sinusoidal electric signals of frequency adjustable.
Said adjustable resistance is a standard resistance box.
During actual measurement, regulating said signal generator, to make its output frequency be the sinusoidal electric signals of f, and the resistance of regulating said adjustable resistance is R, on oscillograph, measures the peak-to-peak value V of said resistance terminal voltage respectively
RPeak-to-peak value V with said inductance terminal voltage to be measured
L, by formula
Can obtain inductance value L to be measured, ω in the formula=2 π f.
The utility model produces following beneficial effect: to compare experimental implementation more easy with conventional AC bridge method survey inductance; Just can draw inductance value to be measured through simple measurement; Help improving experiment effect, improve efficiency of measurement, and closely be connected with College Physics infrastest; Help the on top of oscillographic use of student, expand oscillographic application.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further.
Fig. 1 is the formation synoptic diagram of experimental provision of a kind of inductance measuring of the utility model.
Fig. 2 is the schematic circuit of the said inductance measuring meter of the utility model.
Among the figure: 1. signal generator, 2. inductance measuring meter, 3. oscillograph, 4. adjustable resistance, inductance 5. to be measured, 6. signal input interface, 7. resistance interface, 8. inductive interface, 9. resistance terminal voltage output interface, 10. inductance terminal voltage output interface.
Embodiment
Like Fig. 1, shown in Figure 2; The experimental provision of a kind of inductance measuring of the utility model comprises signal generator 1, inductance measuring meter 2, oscillograph 3, adjustable resistance 4 and inductance to be measured 5; Said inductance measuring meter 2 is provided with signal input interface 6, resistance interface 7, inductive interface 8, resistance terminal voltage output interface 9 and inductance terminal voltage output interface 10; Resistance interface 7 links to each other with adjustable resistance 4 through lead; Inductive interface 8 links to each other with inductance 5 to be measured through lead, and the signal output part of signal input interface 6 usefulness leads connection signal generator 1, resistance terminal voltage output interface 9 and inductance terminal voltage output interface 10 are connected the signal input part of oscillograph 3 respectively with lead; Resistance interface 7 links to each other with resistance terminal voltage output interface 9 through lead, and inductive interface 8 links to each other with inductance terminal voltage output interface 10 through lead, connects the signal input interface 6 of inductance measuring meter 2 after resistance interface 7 is connected in series with inductive interface 8.
The signal that signal generator 1 sends is the sinusoidal electric signals of frequency adjustable.
During actual measurement, it is the sinusoidal electric signals of f that conditioning signal generator 1 makes its output frequency, and the resistance of regulating adjustable resistance 4 is R, on oscillograph 3, measures the peak-to-peak value V of adjustable resistance 4 terminal voltages respectively
RPeak-to-peak value V with inductance 5 terminal voltages to be measured
L, the inductance value of inductance 5 then to be measured does
ω in the formula=2 π f.
Change the output frequency of signal generator 1 and the resistance of adjustable resistance 4, repeat above-mentioned measurement, and obtain the mean value of inductance.
The computing formula of inductance L is derived as follows:
If i is the electric current of RL series circuit, u and v are respectively the voltage at inductance and resistance two ends, by the characteristics of series circuit and the definition of inductance
Have
If the sinusoidal electric signals of importing in the circuit is u=U
mCos ω t, U in the formula
mBe the maximal value of voltage, ω=2 π f, wherein f is the frequency of electric signal, then
Get sin ω t=1, have
V in the formula
mMaximal value for resistance terminal voltage.
If the peak-to-peak value of the peak-to-peak value of resistance terminal voltage and inductance terminal voltage is respectively V
RAnd V
L, then have
Trying to achieve inductance value to be measured thus does
Claims (3)
1. the experimental provision of an inductance measuring; It is characterized in that: comprise signal generator (1), inductance measuring meter (2), oscillograph (3), adjustable resistance (4) and inductance to be measured (5); Said inductance measuring meter (2) is provided with signal input interface (6), resistance interface (7), inductive interface (8), resistance terminal voltage output interface (9) and inductance terminal voltage output interface (10); Said resistance interface (7) links to each other with said adjustable resistance (4) through lead; Said inductive interface (8) links to each other with said inductance to be measured (5) through lead; Said signal input interface (6) connects the signal output part of said signal generator (1) with lead, and said resistance terminal voltage output interface (9) and said inductance terminal voltage output interface (10) are connected the signal input part of said oscillograph (3) respectively with lead; Said resistance interface (7) links to each other with said resistance terminal voltage output interface (9) through lead; Said inductive interface (8) links to each other with said inductance terminal voltage output interface (10) through lead, connects the signal input interface (6) of said inductance measuring meter (2) after said resistance interface (7) is connected in series with said inductive interface (8).
2. the experimental provision of a kind of inductance measuring according to claim 1, it is characterized in that: the signal that said signal generator (1) sends is the sinusoidal electric signals of frequency adjustable.
3. the experimental provision of a kind of inductance measuring according to claim 1, it is characterized in that: said adjustable resistance (4) is a standard resistance box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201604448U CN202563013U (en) | 2012-04-13 | 2012-04-13 | Experimental device for measuring inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201604448U CN202563013U (en) | 2012-04-13 | 2012-04-13 | Experimental device for measuring inductance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202563013U true CN202563013U (en) | 2012-11-28 |
Family
ID=47212658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201604448U Expired - Fee Related CN202563013U (en) | 2012-04-13 | 2012-04-13 | Experimental device for measuring inductance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202563013U (en) |
-
2012
- 2012-04-13 CN CN2012201604448U patent/CN202563013U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20130413 |