CN102254473A - Demonstrator for characteristics of automatic control circuit of sound sensitive sensors - Google Patents
Demonstrator for characteristics of automatic control circuit of sound sensitive sensors Download PDFInfo
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- CN102254473A CN102254473A CN2011101736343A CN201110173634A CN102254473A CN 102254473 A CN102254473 A CN 102254473A CN 2011101736343 A CN2011101736343 A CN 2011101736343A CN 201110173634 A CN201110173634 A CN 201110173634A CN 102254473 A CN102254473 A CN 102254473A
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- pin
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- integrated circuit
- acoustic sensor
- resistance
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Abstract
The invention relates to a demonstrator for characteristics of an automatic control circuit of sensors, and particularly relates to a demonstrator for characteristics of an automatic control circuit of sound sensitive sensors. The demonstrator is characterized in that after a resistor sound sensitive sensor, a piezoelectric sound sensitive sensor and a moving-coil sound sensitive sensor are connected in parallel, one end of each of the above three components is connected with a change-over switch, and the other ends are connected with the negative electrode of a direct current power source; the common terminal of the change-over switch is connected with the grid of a field-effect transistor; after a light emitting diode and a fifth resistor are connected in series, one end is connected with a pin 3 of a 555 integrated circuit, and the other end is connected with the negative electrode of the direct current power source; and one end of a horn is connected with the pin 3 of the 555 integrated circuit, and the other end of the horn is connected with the negative electrode of the direct current power source. As the technical scheme is adopted, the demonstrator has the advantages and positive effects that the operation is simple, the demonstration effect is visual and the construction cost is low.
Description
Technical field
The present invention relates to a kind of sensor automatic control circuit characteristic demonstrating instrument, particularly a kind of acoustic sensor automatic control circuit characteristic demonstrating instrument.
Background technology
At present, in electronic circuit teaching, lecture sensor particularly when the principle of acoustic sensor and the automatic control characteristic in circuit, no demonstration instrument is demonstrated, and it is uninteresting that the student sounds.
Summary of the invention
Technical matters to be solved by this invention provides a kind of acoustic sensor automatic control circuit characteristic demonstrating instrument, can demonstrate resistance-type acoustic sensor, piezoelectric type acoustic sensor and the automatic control characteristic of moving-coil type acoustic sensor in circuit.
The technical solution adopted for the present invention to solve the technical problems is: circuit is by the resistance-type acoustic sensor, the piezoelectric type acoustic sensor, the moving-coil type acoustic sensor, resistance, field effect transistor, electric capacity, 555 integrated circuit, light emitting diode and loudspeaker are formed, 4 pin of a variable-resistance end and 555 integrated circuit link to each other, the other end links to each other with switch, one end of second resistance links to each other with 4 pin of 555 integrated circuit, the drain electrode of the other end and field effect transistor links to each other, one end of first electric capacity and the drain electrode of field effect transistor link to each other, 2 pin of the other end and 555 integrated circuit link to each other, end after the 4th resistance and the second electric capacity parallel connection and the source electrode of field effect transistor link to each other, the negative pole of the other end and direct supply links to each other, one end of the 3rd resistance links to each other with 4 pin of 555 integrated circuit, 6 pin of the other end and 555 integrated circuit, 7 pin link to each other, one end of the 3rd electric capacity and the negative pole of direct supply link to each other, 6 pin of the other end and 555 integrated circuit, 7 pin link to each other, 4 pin of 555 integrated circuit, 8 pin link to each other with power switch, 1 pin of 555 integrated circuit and the negative pole of direct supply link to each other, 5 pin of 555 integrated circuit link to each other by the negative pole of the 4th electric capacity and direct supply, direct supply and power switch series connection, it is characterized in that: the resistance-type acoustic sensor, end after piezoelectric type acoustic sensor and the parallel connection of moving-coil type acoustic sensor links to each other with switch respectively, the negative pole of the other end and direct supply links to each other, the common port of switch links to each other with the grid of field effect transistor, end after the series connection of light emitting diode and the 5th resistance and 3 pin of 555 integrated circuit link to each other, the negative pole of the other end and direct supply links to each other, one end of loudspeaker links to each other with 3 pin of 555 integrated circuit, and the negative pole of the other end and direct supply links to each other.Graphic Panel links to each other with base, light emitting diode, resistance-type acoustic sensor, piezoelectric type acoustic sensor and moving-coil type acoustic sensor, variable resistor, switch and power switch are placed the front of Graphic Panel, and other circuit original paper welding places the back side of Graphic Panel in the circuit board.The resistance-type acoustic sensor has carbon granule formula transmitter; The piezoelectric type acoustic sensor has piezoelectric ceramic piece; The moving-coil type acoustic sensor has moving-coil microphone.
Because adopt technique scheme, advantage and good effect that the present invention had are: simple to operate, the demonstration effect is directly perceived, cheap.
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.
B among the figure
1. resistance-type acoustic sensor B
1. piezoelectric type acoustic sensor B
1. moving-coil type acoustic sensor R
1. variable resistor R
2. second resistance R
3. the 3rd resistance R
4. the 4th resistance R
5. the 5th resistance K
1. switch K
2. power switch V. field effect transistor C
1. first capacitor C
2. second capacitor C
3. the 3rd capacitor C
4. the 4th capacitor I .555 integrated circuit G. light emitting diode Y. loudspeaker E. direct supply S. Graphic Panel D. base
Embodiment
In Fig. 1, variable resistor (R
1) an end and 4 pin of 555 integrated circuit (I) link to each other the other end and switch (K
1) link to each other the second resistance (R
2) an end and 4 pin of 555 integrated circuit (I) link to each other, the other end links to each other with the drain electrode of field effect transistor (V), the first electric capacity (C
1) an end and the drain electrode of field effect transistor (V) link to each other, the other end links to each other with 2 pin of 555 integrated circuit (I), the 4th resistance (R
4) and the second electric capacity (C
2) a end after the parallel connection and the source electrode of field effect transistor (V) link to each other, the other end links to each other with the negative pole of direct supply (E), the 3rd resistance (R
3) an end and 4 pin of 555 integrated circuit (I) link to each other, 6 pin, 7 pin of the other end and 555 integrated circuit (I) link to each other the 3rd electric capacity (C
3) an end and the negative pole of direct supply (E) link to each other, 6 pin, 7 pin of the other end and 555 integrated circuit (I) link to each other 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 by the 4th electric capacity (C
4) link to each other direct supply (E) and power switch (K with the negative pole of direct supply (E)
2) series connection, resistance-type acoustic sensor (B
1), piezoelectric type acoustic sensor (B
2) and moving-coil type acoustic sensor (B
3) after the parallel connection an end respectively and switch (K
1) link to each other, the other end links to each other with the negative pole of direct supply (E), switch (K
1) common port and the grid of field effect transistor (V) link to each other light emitting diode (G) and the 5th resistance (R
5) a end after the series connection and 3 pin of 555 integrated circuit (I) link to each other, the other end links to each other with the negative pole of direct supply (E), and an end of loudspeaker (Y) links to each other with 3 pin of 555 integrated circuit (I), and the other end links to each other with the negative pole of direct supply (E).
In Fig. 2, Graphic Panel (S) links to each other with base (D), light emitting diode (G), resistance-type acoustic sensor (B
1), piezoelectric type acoustic sensor (B
2) and moving-coil type acoustic sensor (B
3), variable resistor (R
1), switch (K
1) and power switch (K
2) placing the front of Graphic Panel (S), other circuit original paper welding places the back side of Graphic Panel (S) in the circuit board.
Claims (2)
1. acoustic sensor automatic control circuit characteristic demonstrating instrument, circuit is made up of resistance-type acoustic sensor, piezoelectric type acoustic sensor, moving-coil type acoustic sensor, resistance, field effect transistor, electric capacity, 555 integrated circuit, light emitting diode and loudspeaker, variable resistor (R
1) an end and 4 pin of 555 integrated circuit (I) link to each other the other end and switch (K
1) link to each other the second resistance (R
2) an end and 4 pin of 555 integrated circuit (I) link to each other, the other end links to each other with the drain electrode of field effect transistor (V), the first electric capacity (C
1) an end and the drain electrode of field effect transistor (V) link to each other, the other end links to each other with 2 pin of 555 integrated circuit (I), the 4th resistance (R
4) and the second electric capacity (C
2) a end after the parallel connection and the source electrode of field effect transistor (V) link to each other, the other end links to each other with the negative pole of direct supply (E), the 3rd resistance (R
3) an end and 4 pin of 555 integrated circuit (I) link to each other, 6 pin, 7 pin of the other end and 555 integrated circuit (I) link to each other the 3rd electric capacity (C
3) an end and the negative pole of direct supply (E) link to each other, 6 pin, 7 pin of the other end and 555 integrated circuit (I) link to each other 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 by the 4th electric capacity (C
4) link to each other direct supply (E) and power switch (K with the negative pole of direct supply (E)
2) series connection, it is characterized in that: resistance-type acoustic sensor (B
1), piezoelectric type acoustic sensor (B
2) and moving-coil type acoustic sensor (B
3) after the parallel connection an end respectively and switch (K
1) link to each other, the other end links to each other with the negative pole of direct supply (E), switch (K
1) common port and the grid of field effect transistor (V) link to each other light emitting diode (G) and the 5th resistance (R
5) a end after the series connection and 3 pin of 555 integrated circuit (I) link to each other, the other end links to each other with the negative pole of direct supply (E), and an end of loudspeaker (Y) links to each other with 3 pin of 555 integrated circuit (I), and the other end links to each other with the negative pole of direct supply (E).
2. a kind of acoustic sensor automatic control circuit characteristic demonstrating instrument according to claim 1 is characterized in that: light emitting diode (G), resistance-type acoustic sensor (B
1), piezoelectric type acoustic sensor (B
2) and moving-coil type acoustic sensor (B
3), variable resistor (R
1), switch (K
1) and power switch (K
2) place the front of Graphic Panel (S).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101736343A CN102254473A (en) | 2011-06-14 | 2011-06-14 | Demonstrator for characteristics of automatic control circuit of sound sensitive sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101736343A CN102254473A (en) | 2011-06-14 | 2011-06-14 | Demonstrator for characteristics of automatic control circuit of sound sensitive sensors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102254473A true CN102254473A (en) | 2011-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101736343A Pending CN102254473A (en) | 2011-06-14 | 2011-06-14 | Demonstrator for characteristics of automatic control circuit of sound sensitive sensors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102254473A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436774A (en) * | 2011-12-26 | 2012-05-02 | 盐城师范学院 | Humidity sensing characteristic demonstrator of inorganic electrolyte type humidity sensor |
| CN103093674A (en) * | 2012-12-26 | 2013-05-08 | 盐城师范学院 | Heat-sensitive cable characteristic demonstration instrument |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201820382U (en) * | 2010-07-23 | 2011-05-04 | 南京化工职业技术学院 | Thermistor characteristic demonstration instrument |
-
2011
- 2011-06-14 CN CN2011101736343A patent/CN102254473A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201820382U (en) * | 2010-07-23 | 2011-05-04 | 南京化工职业技术学院 | Thermistor characteristic demonstration instrument |
Non-Patent Citations (1)
| Title |
|---|
| 程艳敏: "声控报警器", 《百度文库》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436774A (en) * | 2011-12-26 | 2012-05-02 | 盐城师范学院 | Humidity sensing characteristic demonstrator of inorganic electrolyte type humidity sensor |
| CN103093674A (en) * | 2012-12-26 | 2013-05-08 | 盐城师范学院 | Heat-sensitive cable characteristic demonstration instrument |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |