CN101261777A - Heat sensitive resistance, photosensitive, force sensitive, humidity sensitive resistance, magnetism sensitive resistance variability feature demonstrator - Google Patents
Heat sensitive resistance, photosensitive, force sensitive, humidity sensitive resistance, magnetism sensitive resistance variability feature demonstrator Download PDFInfo
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- CN101261777A CN101261777A CNA2008100238616A CN200810023861A CN101261777A CN 101261777 A CN101261777 A CN 101261777A CN A2008100238616 A CNA2008100238616 A CN A2008100238616A CN 200810023861 A CN200810023861 A CN 200810023861A CN 101261777 A CN101261777 A CN 101261777A
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- integrated circuit
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Abstract
The invention relates to a variable resistance characteristic demonstrator, in particular to variable characteristic demonstrators of a thermal resistance, a photoresistor, a piezoresistor, a hygristor and a magneto resistor. The circuit comprises an Ohmmeter, a change-over switch, the thermal resistance, the photoresistor, the piezoresistor, the hygristor, the magneto resistor, a 555 integrated circuit, a resistor, a capacitor and a light emitting diode; the variable resistance characteristic demonstrator is characterized in that one end of the thermal resistance, the photoresistor, the piezoresistor, the hygristor, the the magneto resistor and the Ohmmeter is connected with the positive electrode of a DC power supply after parallel connection, while the other end thereof is connected with a pin 2 and a pin 6 of the 555 integrated circuit through the change-over switch and the resistance, one end of the variable resistance is connected with the change-over switch, while the other end thereof is connected with the negative electrode of the DC power supply. By adopting the technical proposal, the variable resistance characteristic demonstrator has the advantages and active effects that the variable characteristics of the thermal resistance, the photoresistor, the piezoresistor, the hygristor and the magneto resistor can be demonstrated through the reading changes of the Ohmmeter and the working state of the light emitting diode with high visualization and low cost.
Description
Affiliated technical field
The present invention relates to a kind of resistance-variable characteristic demonstrating instrument, particularly thermistor, photoresistance, force sensing resistance, hygristor, mistor variable characteristic demonstrator.
Background technology
At present, in electronic circuit teaching, when lecturing the variable characteristic of thermistor, photoresistance, force sensing resistance, hygristor, mistor, do not have the demonstration instrument demonstration, the student can not understand its variable characteristic intuitively.
Summary of the invention
The purpose of this invention is to provide a kind of thermistor, photoresistance, force sensing resistance, hygristor, mistor variable characteristic demonstrator, the variable characteristic of the variation that can be by the ohmmeter reading and the duty demonstration thermistor of light emitting diode, photoresistance, force sensing resistance, hygristor, mistor.
The object of the present invention is achieved like this: circuit is by ohmmeter, switch, thermistor, photoresistance, force sensing resistance, hygristor, mistor, 555 integrated circuit, resistance, electric capacity and light emitting diode are formed, 4 pin of 555 integrated circuit and 8 pin connect the positive pole of direct supply, 1 pin of 555 integrated circuit connects the negative pole of direct supply, 5 pin of 555 integrated circuit connect the negative pole of direct supply by electric capacity, sending and receiving optical diode between 3 pin of 555 integrated circuit and the dc power anode, after linking to each other with 6 pin, 2 pin of 555 integrated circuit connect the negative pole of direct supply by electric capacity, switch and power supply series connection, it is characterized in that: thermistor, photoresistance, force sensing resistance, hygristor, the positive pole of the termination direct supply after mistor and the ohmmeter parallel connection, the other end connects 2 pin and 6 pin of 555 integrated circuit by switch and resistance, a variable-resistance termination switch, the negative pole of another termination direct supply, ohmmeter, light emitting diode, thermistor, photoresistance, force sensing resistance, hygristor, mistor, switch, variable resistor and switch place the front of demonstration board, original papers such as 555 integrated circuit are fixed on the reverse side of demonstration board, and demonstration board is vertically fixed on the base.
Owing to adopt technique scheme, advantage and good effect that the present invention had are: the variable characteristic of the variation that can be by the ohmmeter reading and the duty demonstration thermistor of light emitting diode, photoresistance, force sensing resistance, hygristor, mistor, intuitive is strong, and cost is not high yet.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is the structural representation of the embodiment of the invention.
R among the figure
1. thermistor R
2. photoresistance R
3. force sensing resistance R
4. hygristor R
5. mistor R
6. resistance R
7. variable resistor C
1. capacitor C
2. electric capacity B. switch V. ohmmeter is integrated circuit G. light emitting diode E. power supply K. switch 1. demonstration boards 2. bases 3. footing I.555
Embodiment
In Fig. 1,4 pin of 555 integrated circuit (I) and 8 pin connect the positive pole of direct supply, and 1 pin of 555 integrated circuit (I) connects the negative pole of direct supply, and 5 pin of 555 integrated circuit (I) are by electric capacity (C
2) connecing the negative pole of direct supply, sending and receiving optical diode (G) between 3 pin of 555 integrated circuit (I) and the dc power anode, 2 pin of 555 integrated circuit (I) link to each other the back by electric capacity (C with 6 pin
1) connect the negative pole of direct supply, switch (K) and power supply (E) series connection, thermistor (R
1), photoresistance (R
2), force sensing resistance (R
3), hygristor (R
4), mistor (R
5) and ohmmeter (V) parallel connection after the positive pole of a termination direct supply, the other end is by switch (B) and resistance (R
6) connect 2 pin and 6 pin of 555 integrated circuit (I), variable resistor (R
1) a termination switch (B), the negative pole of another termination direct supply.
In Fig. 2,555 integrated circuit original papers such as (I) is fixed on the reverse side of demonstration board (1), and demonstration board (1) is vertically fixed on the base (2), and base (2) has footing (3), ohmmeter (V), light emitting diode (G), thermistor (R for following four jiaos
1), photoresistance (R
2), force sensing resistance (R
3), hygristor (R
4), mistor (R
5), switch (K), variable resistor (R
7) and switch (K) place the front of demonstration board (1).
Claims (2)
1. a thermistor, photoresistance, force sensing resistance, hygristor, mistor variable characteristic demonstrator, circuit is made up of ohmmeter, switch, thermistor, photoresistance, force sensing resistance, hygristor, mistor, 555 integrated circuit, resistance, electric capacity and light emitting diode, 4 pin of 555 integrated circuit (I) and 8 pin connect the positive pole of direct supply, 1 pin of 555 integrated circuit (I) connects the negative pole of direct supply, and 5 pin of 555 integrated circuit (I) are by electric capacity (C
2) connecing the negative pole of direct supply, sending and receiving optical diode (G) between 3 pin of 555 integrated circuit (I) and the dc power anode, 2 pin of 555 integrated circuit (I) link to each other the back by electric capacity (C with 6 pin
1) connecing the negative pole of direct supply, switch (K) and power supply (E) series connection is characterized in that: thermistor (R
1), photoresistance (R
2), force sensing resistance (R
3), hygristor (R
4), mistor (R
5) and ohmmeter (V) parallel connection after the positive pole of a termination direct supply, the other end is by switch (B) and resistance (R
6) connect 2 pin and 6 pin of 555 integrated circuit (I), variable resistor (R
1) a termination switch (B), the negative pole of another termination direct supply.
2. a kind of thermistor according to claim 1, photoresistance, force sensing resistance, hygristor, mistor variable characteristic demonstrator is characterized in that: ohmmeter (V), light emitting diode (G), thermistor (R
1), photoresistance (R
2), force sensing resistance (R
3), hygristor (R
4), mistor (R
5), switch (K), variable resistor (R
7) and switch (K) place the front of demonstration board (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810023861A CN100590677C (en) | 2008-04-18 | 2008-04-18 | Heat sensitive resistance, photosensitive resistance, force sensitive resistance, humidity sensitive resistance, magnetism sensitive resistance variability feature demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810023861A CN100590677C (en) | 2008-04-18 | 2008-04-18 | Heat sensitive resistance, photosensitive resistance, force sensitive resistance, humidity sensitive resistance, magnetism sensitive resistance variability feature demonstrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101261777A true CN101261777A (en) | 2008-09-10 |
| CN100590677C CN100590677C (en) | 2010-02-17 |
Family
ID=39962210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810023861A Expired - Fee Related CN100590677C (en) | 2008-04-18 | 2008-04-18 | Heat sensitive resistance, photosensitive resistance, force sensitive resistance, humidity sensitive resistance, magnetism sensitive resistance variability feature demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100590677C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800002A (en) * | 2010-03-16 | 2010-08-11 | 盐城师范学院 | Humidity sensing characteristic demonstrator for ceramic humidity sensors |
| CN101826268A (en) * | 2010-04-27 | 2010-09-08 | 盐城师范学院 | Semiconductor magnetic sensor characteristic demonstrator |
| CN102214406A (en) * | 2011-06-09 | 2011-10-12 | 盐城师范学院 | Body pyroelectric infrared sensor and Fresnel lens combined control circuit demonstrator |
| CN102222439A (en) * | 2011-06-28 | 2011-10-19 | 南京化工职业技术学院 | Demonstrating instrument for automatic control circuit of common photoelectric device |
| CN102339543A (en) * | 2010-07-23 | 2012-02-01 | 南京化工职业技术学院 | Demonstration instrument for thermistor characteristics |
| CN102436774A (en) * | 2011-12-26 | 2012-05-02 | 盐城师范学院 | Humidity sensing characteristic demonstrator of inorganic electrolyte type humidity sensor |
| CN102881210A (en) * | 2012-10-30 | 2013-01-16 | 南京化工职业技术学院 | Humidity sensing characteristic demonstrator for humidity sensor |
| CN105741655A (en) * | 2016-05-08 | 2016-07-06 | 商洛学院 | Sensor integrated demonstration instrument |
-
2008
- 2008-04-18 CN CN200810023861A patent/CN100590677C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800002A (en) * | 2010-03-16 | 2010-08-11 | 盐城师范学院 | Humidity sensing characteristic demonstrator for ceramic humidity sensors |
| CN101800002B (en) * | 2010-03-16 | 2011-08-03 | 盐城师范学院 | Humidity sensing characteristic demonstrator for ceramic humidity sensors |
| CN101826268A (en) * | 2010-04-27 | 2010-09-08 | 盐城师范学院 | Semiconductor magnetic sensor characteristic demonstrator |
| CN101826268B (en) * | 2010-04-27 | 2012-03-28 | 盐城师范学院 | Semiconductor magnetic sensor characteristic demonstrator |
| CN102339543A (en) * | 2010-07-23 | 2012-02-01 | 南京化工职业技术学院 | Demonstration instrument for thermistor characteristics |
| CN102214406A (en) * | 2011-06-09 | 2011-10-12 | 盐城师范学院 | Body pyroelectric infrared sensor and Fresnel lens combined control circuit demonstrator |
| CN102222439A (en) * | 2011-06-28 | 2011-10-19 | 南京化工职业技术学院 | Demonstrating instrument for automatic control circuit of common photoelectric device |
| CN102436774A (en) * | 2011-12-26 | 2012-05-02 | 盐城师范学院 | Humidity sensing characteristic demonstrator of inorganic electrolyte type humidity sensor |
| CN102881210A (en) * | 2012-10-30 | 2013-01-16 | 南京化工职业技术学院 | Humidity sensing characteristic demonstrator for humidity sensor |
| CN105741655A (en) * | 2016-05-08 | 2016-07-06 | 商洛学院 | Sensor integrated demonstration instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100590677C (en) | 2010-02-17 |
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Address after: 225752 science and Technology Office of people's Government of West abalone Township, Taizhou, Xinghua, Jiangsu Patentee after: Nanjing College of Chemical Technology Address before: 210048 Jiangsu city of Nanjing province Dachang geguan Road No. 625 Patentee before: Nanjing College of Chemical Technology |
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| 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: 20100217 Termination date: 20170418 |