CN101789196B - Automatic control switch circuit demonstration instrument - Google Patents
Automatic control switch circuit demonstration instrument Download PDFInfo
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- CN101789196B CN101789196B CN2009102153015A CN200910215301A CN101789196B CN 101789196 B CN101789196 B CN 101789196B CN 2009102153015 A CN2009102153015 A CN 2009102153015A CN 200910215301 A CN200910215301 A CN 200910215301A CN 101789196 B CN101789196 B CN 101789196B
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- triode
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Abstract
The invention relates to a demonstration instrument, in particular to an automatic control switch circuit demonstration instrument, belonging to the technical field of teaching instruments. The automatic control switch circuit demonstration instrument is characterized in that a pin 2 of a 555 integrated circuit is respectively connected with a photoresistor, a thermistor, a reed switch and a triode collector through transfer switches; one end of a variable resistor is connected with the pin 2 of the 555 integrated circuit, and the other end thereof is connected with a pin 4 of the 555 integrated circuit; one end in which a relay is connected with a diode in parallel is connected with a pin 3 of the 555 integrated circuit, and the other end thereof is connected with a pin 1 of the 555 integrated circuit; and one end in which a normally open switch of the relay is connected with a bulb in series is connected with a pin 8 of the 555 integrated circuit, and the other end thereof is connected with the pin 1 of the 555 integrated circuit. By adopting the technical scheme, the automatic control switch circuit demonstration instrument has the advantages and positive effects of simple circuit and clear demonstration.
Description
Technical field
The present invention relates to a kind of demonstrator, particularly a kind of automatic control switch circuit demonstration instrument belongs to technical field of teaching instruments.
Background technology
At present; The application of electronic technology is more and more universal the sixth of the twelve Earthly Branches; But in electronic circuit teaching; With the automatic control switch circuit of special electronic devices and components design such as photoresistance, thermistor, learning aid all difficulty is carried out, and can not demonstrate the effect of special electronic devices and components in the automatic control switch circuit intuitively on the classroom.
Summary of the invention
The purpose of this invention is to provide a kind of automatic control switch circuit demonstration instrument, can directly demonstrate photoresistance, thermistor, tongue tube and piezoelectric ceramic piece role in the automatic control switch circuit respectively.
The objective of the invention is to realize like this: design a circuit, make the negative pole of a termination direct supply of piezoelectric ceramic piece, the other end links to each other with the base stage of first triode; One end of first resistance links to each other with piezoelectric ceramic piece, the positive pole of another termination direct supply, and an end of second resistance links to each other with the collector of first triode; The positive pole of another termination direct supply, an end of the 3rd resistance links to each other with second transistor collector, the positive pole of another termination direct supply; First transistor collector links to each other with second transistor base through first electric capacity, and 6 pin of 555 integrated circuit, 7 pin and the 4th resistance link to each other, and direct supply is connected with power switch; 4 pin, 8 pin of 555 integrated circuit link to each other with power switch, and 1 pin of 555 integrated circuit and the negative pole of direct supply link to each other, and 5 pin of 555 integrated circuit link to each other through the negative pole of the 3rd electric capacity and direct supply; It is characterized in that: 2 pin of 555 integrated circuit link to each other with photoresistance, thermistor, tongue tube and second transistor collector respectively through switch; A variable-resistance end links to each other with 2 pin of 555 integrated circuit, and the other end links to each other with 4 pin of 555 integrated circuit, and the end after relay and the diode parallel connection links to each other with 555 integrated circuit, 3 pin; The other end links to each other with 555 integrated circuit, 1 pin; End after the series connection of relay normally open switch and bulb links to each other with 8 pin of 555 integrated circuit, and the other end links to each other with 1 pin of 555 integrated circuit, demonstration board front upper fixed bulb; Positive center fixed piezoelectric ceramic piece, tongue tube, thermistor and photoresistance; Positive below fixed power source switch, switch and variable resistor, the piezoelectric ceramic piece model is with ф b 27mm, and the triode model is with 9014; β >=200, the thermistor model is used negative temperature coefficient.
Because adopt technique scheme, advantage and good effect that the present invention had are: circuit is simple, demonstration comes into plain view.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
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. first resistance R
2. second resistance R
3. the 3rd resistance R
4. the 4th resistance R
5. thermistor R
6. photoresistance R
7. variable resistor C
1. first capacitor C
2. second capacitor C
3. the 3rd electric capacity G
1. the first triode G
2. the second triode G
3. diode is integrated circuit B. piezoelectric ceramic piece T. tongue tube K. switch K I.555
1. relay K
1-1: the relay normally open K switch
2. power switch Y. bulb E. direct supply A. demonstration board D. base
Embodiment
In Fig. 1, the negative pole of a termination direct supply (E) of piezoelectric ceramic piece (B), the other end and the first triode (G
1) base stage link to each other the first resistance (R
1) an end link to each other the positive pole of another termination direct supply (E), the second resistance (R with piezoelectric ceramic piece (B)
2) an end and the first triode (G
1) collector link to each other the positive pole of another termination direct supply (E), the 3rd resistance (R
3) an end and the second triode (G
2) collector links to each other the positive pole of another termination direct supply (E), the first triode (G
1) collector is through the first electric capacity (C
1) and the second triode (G
2) base stage links to each other the 4th resistance (R
4) and the second electric capacity (C
2) series connection, 6 pin of 555 integrated circuit (I), 7 pin and the 4th resistance (R
4) link to each other direct supply (E) and power switch (K
2) series connection, 4 pin of 555 integrated circuit (I), 8 pin and power switch (K
2) link to each other, 1 pin of 555 integrated circuit (I) links to each other with the negative pole of direct supply (E), and 5 pin of 555 integrated circuit (I) are through the 3rd electric capacity (C
3) link to each other with the negative pole of direct supply (E), 2 pin of 555 integrated circuit (I) through switch (K) respectively with photoresistance (R
6), thermistor (R
5), tongue tube (T) and the second triode (G
2) collector links to each other variable resistor (R
7) an end link to each other with 2 pin of 555 integrated circuit (I), the other end links to each other relay (K with 4 pin of 555 integrated circuit (I)
1) and diode (G
3) a end after the parallel connection links to each other with 555 integrated circuit (I), 3 pin, the other end links to each other relay normally open switch (K with 555 integrated circuit (I), 1 pin
1-1) with bulb (Y) series connection after an end link to each other with 8 pin of 555 integrated circuit (I), the other end links to each other with 1 pin of 555 integrated circuit (I).
In Fig. 2; Demonstration board (A) links to each other with base (D); With electronic devices and components in the circuit board and be fixed in demonstration board (A) back side, the positive upper fixed bulb of demonstration board (A) (Y), positive center fixed piezoelectric ceramic piece (B), tongue tube (T), thermistor (R according to the annexation among Fig. 1 welding
5) and photoresistance (R
6), positive below fixed power source switch (K
2), switch (K) and variable resistor (R
7).
When demonstrating, switch (K) is transferred to and triode (G with piezoelectric ceramic piece
2) collector links to each other, and turns on the power switch (K
2), regulate adjustable resistance (R
7), make it be in stable state, promptly 3 pin output low levels of 555 integrated circuit (I) are hit the palm, and piezoelectric ceramic piece (B) just converts the acoustic signals that receives to electric signal, through the first triode (G
1), the second triode (G
2) amplify, make 555 integrated circuit (I) upset set, the 3 pin output high level of 555 integrated circuit (I), relay (K
1) must be electric, relay normally open switch (K
1-1) adhesive, bulb (Y) electrified light emitting.
When demonstrating with tongue tube, switch (K) is transferred to tongue tube (T) links to each other, turn on the power switch (K
2), regulate adjustable resistance (R
7), make it be in stable state, promptly 3 pin output low levels of 555 integrated circuit (I) near tongue tube, when the tongue tube adhesive, make 555 integrated circuit (I) upset set with magnet, the 3 pin output high level of 555 integrated circuit (I), relay (K
1) must be electric, relay normally open switch (K
1-1) adhesive, bulb (Y) electrified light emitting.
When demonstrating, switch (K) is transferred to and thermistor (R with thermistor
5) link to each other, turn on the power switch (K
2), regulate adjustable resistance (R
7), make it be in stable state, i.e. 3 pin output low levels of 555 integrated circuit (I) are with heat source near thermistor (R
5), make 555 integrated circuit (I) upset set, the 3 pin output high level of 555 integrated circuit (I), relay (K
1) must be electric, relay normally open switch (K
1-1) adhesive, bulb (Y) electrified light emitting.
When demonstrating, switch (K) is transferred to and photoresistance (R with photoresistance
6) link to each other, make photoresistance not receive the irradiation of light with shelter, turn on the power switch (K
2) adjusting adjustable resistance (R
7), make it be in stable state, promptly 3 pin output low levels of 555 integrated circuit (I) are removed the shelter in the photoresistance, 555 integrated circuit (I) upset set, the 3 pin output high level of 555 integrated circuit (I), relay (K
1) must be electric, relay normally open switch (K
1-1) adhesive, bulb (Y) electrified light emitting.
Claims (1)
1. automatic control switch circuit demonstration instrument, the negative pole of a termination direct supply (E) of piezoelectric ceramic piece (B), the other end and the first triode (G
1) base stage link to each other the first resistance (R
1) an end link to each other the positive pole of another termination direct supply (E), the second resistance (R with piezoelectric ceramic piece (B)
2) an end and the first triode (G
1) collector link to each other the positive pole of another termination direct supply (E), the 3rd resistance (R
3) an end and the second triode (G
2) collector links to each other the positive pole of another termination direct supply (E), the first triode (G
1) collector is through the first electric capacity (C
1) and the second triode (G
2) base stage links to each other the 4th resistance (R
4) and the second electric capacity (C
2) series connection, 6 pin of 555 integrated circuit (I), 7 pin and the 4th resistance (R
4) link to each other direct supply (E) and power switch (K
2) series connection, 4 pin of 555 integrated circuit (I), 8 pin and power switch (K
2) link to each other, 1 pin of 555 integrated circuit (I) links to each other with the negative pole of direct supply (E), and 5 pin of 555 integrated circuit (I) are through the 3rd electric capacity (C
3) link to each other with the negative pole of direct supply (E), it is characterized in that: 2 pin of 555 integrated circuit (I) through switch (K) respectively with photoresistance (R
6), thermistor (R
5), tongue tube (T) and the second triode (G
2) collector links to each other variable resistor (R
7) an end link to each other with 2 pin of 555 integrated circuit (I), the other end links to each other relay (K with 4 pin of 555 integrated circuit (I)
1) and diode (G
3) a end after the parallel connection links to each other with 555 integrated circuit (I), 3 pin, the other end links to each other relay normally open switch (K with 555 integrated circuit (I), 1 pin
1-1) with bulb (Y) series connection after an end link to each other with 8 pin of 555 integrated circuit (I), the other end links to each other with 1 pin of 555 integrated circuit (I), the positive upper fixed bulb of demonstration board (A) (Y), positive center fixed piezoelectric ceramic piece (B), tongue tube (T), thermistor (R
5) and photoresistance (R
6), positive below fixed power source switch (K
2), switch (K) and variable resistor (R
7), the piezoelectric ceramic piece model is used ф 27mm, and the triode model is with 9014, β>=200, the thermistor model is used negative temperature coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102153015A CN101789196B (en) | 2009-12-23 | 2009-12-23 | Automatic control switch circuit demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102153015A CN101789196B (en) | 2009-12-23 | 2009-12-23 | Automatic control switch circuit demonstration instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101789196A CN101789196A (en) | 2010-07-28 |
| CN101789196B true CN101789196B (en) | 2012-07-18 |
Family
ID=42532397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102153015A Expired - Fee Related CN101789196B (en) | 2009-12-23 | 2009-12-23 | Automatic control switch circuit demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101789196B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968938B (en) * | 2010-09-16 | 2012-07-18 | 盐城师范学院 | Body inductive automatic control circuit demonstrator |
| CN102042884A (en) * | 2010-10-22 | 2011-05-04 | 江苏省电力公司建湖县供电公司 | Abnormity alarm for connector of electric junction box |
| CN102074153B (en) * | 2010-11-22 | 2013-10-30 | 盐城师范学院 | Relay switch characteristic demonstrator |
| CN104123872A (en) * | 2014-05-27 | 2014-10-29 | 西安开元电子实业有限公司 | Inductively controlled electric system demonstrating and training device |
| CN104376768A (en) * | 2014-11-13 | 2015-02-25 | 盐城工业职业技术学院 | Thermistor feature and application experimental instrument |
| CN104966444A (en) * | 2015-06-30 | 2015-10-07 | 盐城工业职业技术学院 | Thermo-sensitive sensor, photosensitive sensor, reed switch characteristic and application demonstration instrument |
| CN106816068A (en) * | 2015-11-29 | 2017-06-09 | 重庆尊来科技有限责任公司 | A kind of capacitive reactance tester of non-gate |
| CN105741655A (en) * | 2016-05-08 | 2016-07-06 | 商洛学院 | Sensor integrated demonstration instrument |
-
2009
- 2009-12-23 CN CN2009102153015A patent/CN101789196B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101789196A (en) | 2010-07-28 |
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Granted publication date: 20120718 Termination date: 20121223 |