CN206649794U - Thermistor temp characteristic curve demonstrator - Google Patents
Thermistor temp characteristic curve demonstrator Download PDFInfo
- Publication number
- CN206649794U CN206649794U CN201621188815.8U CN201621188815U CN206649794U CN 206649794 U CN206649794 U CN 206649794U CN 201621188815 U CN201621188815 U CN 201621188815U CN 206649794 U CN206649794 U CN 206649794U
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- CN
- China
- Prior art keywords
- thermistor
- heater
- ammeter
- voltmeter
- power supply
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Abstract
It the utility model is related to thermistor temp characteristic curve demonstrator, including circuit main board, power supply, switch, slide rheostat, voltmeter, ammeter and heater are installed on circuit main board, wherein, thermistor is placed with heater, and the thermal detector for being used for measuring thermistor local environment temperature is housed in heater；Power supply connects to form loop by switching with the both ends of slide rheostat；The positive pole of power supply also connects the positive pole of voltmeter and ammeter, one end of the negative pole connection thermistor of ammeter simultaneously, and the negative pole of voltmeter is connected with the slide plate of the other end of thermistor while slide rheostat.The utility model is by the power supply of resistance measurement with voltammetry, switch, slide rheostat, voltmeter, ammeter and thermistor, and the heater of temperature adjustment and the thermal detector of thermometric are uniformly arranged on same circuit main board, it is easy to carry, simple to operate, easy measurement, easy reading, improve demonstration efficiency.
Description
【Technical field】
It the utility model is related to demonstrator field, and in particular to thermistor temp characteristic curve demonstrator.
【Background technology】
Thermistor is the critical elements in sensor, and its key property is that resistance increases and is gradually reduced with temperature.
Usually in order to reflect its property, when temperature changes, its resistance can be read with ohmmeter.In order to finer reflection
Go out its resistance variation with temperature rule, it is necessary to use voltammetry.Specifically thermistor is put into a beaker, while to change
Temperature, while measurement ammeter reading.Required instrument is complex, is unfavorable for carrying, and it is very inconvenient to operate, and easily goes out
It is wrong.
【The content of the invention】
The purpose of this utility model is to overcome problems of the prior art, there is provided a kind of thermistor temp characteristic
Curve demonstrator, measuring resistance and thermometric are integrated in one, and are easy to carry and easy to operate.
In order to achieve the above object, the utility model adopts the following technical scheme that：
Including circuit main board, power supply, switch, slide rheostat, voltmeter, ammeter are installed on circuit main board and added
Thermal, wherein, thermistor is placed with heater, and be equipped with heater and be used to measure thermistor local environment
The thermal detector of temperature；
Power supply connects to form loop by switching with the both ends of slide rheostat；The positive pole of power supply also connects voltmeter simultaneously
With the positive pole of ammeter, one end of the negative pole connection thermistor of ammeter, the negative pole of voltmeter and the other end of thermistor
The slide plate of slide rheostat is connected simultaneously；
Heater uses the beaker equipped with heating medium, and heating medium uses water；Thermal detector uses thermometer, heating dress
Center the rubber ring for vertical fixed thermometer.
Further, the bottom of circuit main board is provided with two supports.
Compared with prior art, the utility model has technique effect beneficial below：
The utility model is electric by the power supply of resistance measurement with voltammetry, switch, slide rheostat, voltmeter, ammeter and temperature-sensitive
Resistance, and the thermal detector of the heater of temperature adjustment and thermometric are uniformly arranged on same circuit main board, and are fixed, carrying side
Just, closure switch are only needed during operation, adjust the resistance of slide rheostat, simple to operate, easy measurement, easy reading, raising is drilled
Show efficiency.
Further, the utility model is easy to play a supporting role, circuit main board is placed vertically by setting support,
Beneficial to demonstration.
Further, the utility model heating medium is water, convenient material drawing.
【Brief description of the drawings】
Fig. 1 is structural representation of the present utility model；
Fig. 2 is circuit diagram of the present utility model.
Wherein：1- power supplys, 2- switches, 3- slide rheostats, 4- voltmeters, 5- ammeters, 6- thermistors, 7- circuit masters
Plate, 8- beakers, 9- heating media, 10- supports, 11- thermometers.
【Embodiment】
The utility model is described in further details below in conjunction with the accompanying drawings.
Referring to Fig. 1 and Fig. 2, the utility model includes circuit main board 7, be provided with circuit main board 7 power supply 1, switch 2,
Slide rheostat 3, voltmeter 4, ammeter 5 and heater, heater use the beaker 8 equipped with heating medium 9；Heating is situated between
Matter 9 can use water.Wherein, thermistor 6 is placed with beaker 8, and is equipped with beaker 8 and is used to measure residing for thermistor 6
The thermal detector of environment temperature, thermal detector can use thermometer 11, and rubber ring is provided with beaker 8, and thermometer 11 passes through the rubber
Rubber ring, it is fixed on vertically in beaker 8, beneficial to reading.The bottom of circuit main board 7 is provided with two supports 10.
Power supply 1 connects to form loop by switch 2 with the both ends of slide rheostat 3；The positive pole of power supply 1 also connects electricity simultaneously
Press the positive pole of table 4 and ammeter 5, one end of the negative pole connection thermistor 6 of ammeter 5, the negative pole and thermistor of voltmeter 4
The slide plate of 6 other end slide rheostat 3 simultaneously is connected.
The utility model main course of work and principle：
1. first being contained in beaker 8 into a certain amount of cold water, now water temperature is read by thermometer 11；Switch 2 is closed, electricity
The voltage in source 1 is maintained at 10V, writes down the reading of ammeter 5, calculates resistance value at this temperature.
2. keeping voltage 10V constant, boiling water is continuously added in beaker 8, every 10 DEG C or so, then ammeter 5 is observed and reads
A series of number, so as to calculate resistance values.
3. the data of a record insert form, using resistance as the longitudinal axis, using temperature as transverse axis, plane right-angle coordinate is established,
Described a little with trace-point method, then connected with smoothed curve, be exactly thermistor temp characteristic curve.
Claims (2)
1. thermistor temp characteristic curve demonstrator, it is characterised in that：Including circuit main board (7), pacify on circuit main board (7)
Equipped with power supply (1), switch (2), slide rheostat (3), voltmeter (4), ammeter (5) and heater, wherein, heater
In be placed with thermistor (6), and the thermal detector for being used for measuring thermistor (6) local environment temperature is housed in heater；
Power supply (1) connects to form loop by switching (2) with the both ends of slide rheostat (3)；The positive pole of power supply (1) also connects simultaneously
The positive pole of voltmeter (4) and ammeter (5) is connect, the negative pole of ammeter (5) connects one end of thermistor (6), voltmeter (4)
Negative pole is connected with the other end of thermistor (6) while the slide plate of slide rheostat (3)；
Heater uses the beaker (8) equipped with heating medium (9), and heating medium (9) uses water；Thermal detector uses thermometer
(11) rubber ring for vertical fixed thermometer (11), is provided with heater.
2. thermistor temp characteristic curve demonstrator according to claim 1, it is characterised in that：Circuit main board (7)
Bottom is provided with two supports (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621188815.8U CN206649794U (en) | 2016-10-28 | 2016-10-28 | Thermistor temp characteristic curve demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621188815.8U CN206649794U (en) | 2016-10-28 | 2016-10-28 | Thermistor temp characteristic curve demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206649794U true CN206649794U (en) | 2017-11-17 |
Family
ID=60283589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621188815.8U Expired - Fee Related CN206649794U (en) | 2016-10-28 | 2016-10-28 | Thermistor temp characteristic curve demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206649794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110660300A (en) * | 2019-11-12 | 2020-01-07 | 苏红 | Joule's law experiment demonstration instrument and experiment method |
-
2016
- 2016-10-28 CN CN201621188815.8U patent/CN206649794U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110660300A (en) * | 2019-11-12 | 2020-01-07 | 苏红 | Joule's law experiment demonstration instrument and experiment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171117 Termination date: 20181028 |