CN205622840U - A speaker circuit for english show teaching aid - Google Patents
A speaker circuit for english show teaching aid Download PDFInfo
- Publication number
- CN205622840U CN205622840U CN201620291436.5U CN201620291436U CN205622840U CN 205622840 U CN205622840 U CN 205622840U CN 201620291436 U CN201620291436 U CN 201620291436U CN 205622840 U CN205622840 U CN 205622840U
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- CN
- China
- Prior art keywords
- resistance
- amplifier
- input end
- outfan
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a speaker circuit for english show teaching aid, the positive going input end that signal input part was put through first ohmic connection to first fortune, first electric capacity and two grounding of reverse input end through establishing ties that first fortune was put, the output that the reverse input end put of fortune was put to a fortune through the 2nd parallelly connected electric capacity and the 3rd ohmic connection, the positive going input end of putting is transported through fourth resistance and the 3rd capacitance connection who establishes ties to the output that first fortune was put to the second, the positive going input end that second fortune was put is through the 5th grounding, the reverse input end that second fortune was put is through the 6th grounding, the output of putting is transported to the reverse input end that second fortune was put through the 7th ohmic connection to second, the output that second fortune was put is through the 8th ohmic connection to signal output part. The utility model discloses the not enough of prior art can be improved, the interference killing feature of english show teaching aid speaker has been improved.
Description
Technical field
This utility model relates to a kind of English-teaching aid, a kind of speaker electricity showing teaching aid for English
Road.
Background technology
During the daily teaching of English, multimedia presentation device is a kind of conventional teaching aid.Traditional raises one's voice
Device device is easily subject to interference and produces " sonic boom ", has had influence on the teaching efficiency of multimedia presentation device.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of speaker circuit showing teaching aid for English, it is possible to
Solve the deficiencies in the prior art, improve English and show the capacity of resisting disturbance of teaching aid speaker.
For solving above-mentioned technical problem, technical solution adopted in the utility model is as follows.
A kind of speaker circuit showing teaching aid for English, signal input part is connected to the first amplifier by the first resistance
Positive input, the reverse input end of the first amplifier by series connection the first electric capacity and the second resistance eutral grounding, the first amplifier
Reverse input end the second electric capacity in parallel and the 3rd resistance are connected to the outfan of the first amplifier, the outfan of the first amplifier
Be connected to the positive input of the second amplifier by the 4th resistance connected and the 3rd electric capacity, the positive input of the second amplifier leads to
Crossing the 5th resistance eutral grounding, the reverse input end of the second amplifier passes through the 6th resistance eutral grounding, and the reverse input end of the second amplifier passes through
7th resistance is connected to the outfan of the second amplifier, and the outfan of the second amplifier is connected to signal output part by the 8th resistance,
4th resistance and the 3rd electric capacity are connected to the outfan of the second amplifier by the 9th resistance, and the outfan of the second amplifier passes through the tenth
Resistance is connected to the positive input of the 3rd amplifier, and the reverse input end of the 3rd amplifier passes through the 11st resistance eutral grounding, the 3rd fortune
The outfan put is connected to the reverse input end of four high guaily unit by the 12nd resistance, and the positive input of four high guaily unit is by the
13 resistance eutral groundings, the reverse input end of four high guaily unit is connected to the outfan of four high guaily unit by the 4th electric capacity, four high guaily unit
Outfan be connected to the positive input of the 3rd amplifier by the 14th resistance, the outfan of the 3rd amplifier is by the 15th electricity
Resistance is connected to the base stage of audion, and the colelctor electrode of audion is connected between the 4th resistance and the 3rd electric capacity, the transmitting of audion
The 5th capacity earth is passed through in pole.
What employing technique scheme was brought has the beneficial effects that: this utility model passes through the first amplifier to input signal
Being amplified, then filtered the signal after amplifying by the second amplifier, the 3rd amplifier and four high guaily unit constitute feedback
Monitoring loop, controls the break-make of audion, thus changes the filtering ginseng of the second amplifier flexibly according to the output signal of the second amplifier
Number, improves the filter effect for interference components.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of one detailed description of the invention of this utility model.
In figure: R1, the first resistance；R2, the second resistance tube；R3, the 3rd resistance；R4, the 4th resistance；R5, the 5th resistance；
R6, the 6th resistance；R7, the 7th resistance；R8, the 8th resistance；R9, the 9th resistance；R10, the tenth resistance；R11, the 11st resistance；
R12, the 12nd resistance；R13, the 13rd resistance；R14, the 14th resistance；R15, the 15th resistance；C1, the first electric capacity；C2,
Two electric capacity；C3, the 3rd electric capacity；C4, the 4th electric capacity；C5, the 5th electric capacity；；Q, audion；A1, the first amplifier；A2, the second amplifier；
A3, the 3rd electric capacity；A4, the 4th electric capacity；IN, signal input part；OUT, signal output part.
Detailed description of the invention
It is connected to by the first resistance R1 with reference to Fig. 1, the signal input part IN of one detailed description of the invention of this utility model
The positive input of the first amplifier A1, the reverse input end of the first amplifier A1 the first electric capacity C1 and the second resistance R2 by series connection
Ground connection, the reverse input end of the first amplifier A1 the second electric capacity C2 in parallel and the 3rd resistance R3 is connected to the first amplifier A1
Outfan, the outfan of the first amplifier A1 is just being connected to the second amplifier A2 by the 4th resistance R4 and the 3rd electric capacity C3 of series connection
To input, the positive input of the second amplifier A2 passes through the 5th resistance R5 ground connection, and the reverse input end of the second amplifier A2 passes through
6th resistance R6 ground connection, the reverse input end of the second amplifier A2 is connected to the outfan of the second amplifier A2 by the 7th resistance R7,
The outfan of the second amplifier A2 is connected to signal output part OUT by the 8th resistance R8, and the 4th resistance R4 and the 3rd electric capacity C3 leads to
Crossing the 9th resistance R9 and be connected to the outfan of the second amplifier A2, the outfan of the second amplifier A2 is connected to by the tenth resistance R10
The positive input of the 3rd amplifier A3, the reverse input end of the 3rd amplifier A3 passes through the 11st resistance R11 ground connection, the 3rd amplifier A3
Outfan be connected to the reverse input end of four high guaily unit A4, the positive input of four high guaily unit A4 by the 12nd resistance R12
By the 13rd resistance R13 ground connection, the reverse input end of four high guaily unit A4 is connected to four high guaily unit A4's by the 4th electric capacity C4
Outfan, the outfan of four high guaily unit A4 is connected to the positive input of the 3rd amplifier A3 by the 14th resistance R14, the 3rd fortune
The outfan putting A3 is connected to the base stage of audion Q by the 15th resistance R15, and the colelctor electrode of audion Q is connected to the 4th electricity
Between resistance R4 and the 3rd electric capacity C3, the emitter stage of audion Q passes through the 5th electric capacity C5 ground connection.
Wherein, the first resistance R1 be 65k Ω, the second resistance R2 be 35k Ω, the 3rd resistance R3 be 15k Ω, the 4th resistance R4
Being 120k Ω for 50k Ω, the 5th resistance R5, the 6th resistance R6 is 70k Ω, and the 7th resistance R7 is 35k Ω, and the 8th resistance R8 is 60
K Ω, the 9th resistance R9 are 25 k Ω, and the tenth resistance R10 is 55 k Ω, and the 11st resistance R11 is 70 k Ω, the 12nd resistance
R12 is 40 k Ω, and the 13rd resistance R13 is 135 k Ω, and the 14th resistance R14 is 80 k Ω, and the 15th resistance R15 is 50 k
Ω.First electric capacity C1 is 275 μ F, and the second electric capacity C2 is 85 μ F, and the 3rd electric capacity C3 is 185 μ F, and the 4th electric capacity C4 is 65 μ F, the 5th
Electric capacity C5 is 200 μ F.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model
Claimed scope is defined by appending claims and equivalent thereof.
Claims (1)
1. the speaker circuit showing teaching aid for English, it is characterised in that: signal input part (IN) passes through the first resistance
(R1) being connected to the positive input of the first amplifier (A1), the reverse input end of the first amplifier (A1) is by the first electric capacity of series connection
(C1) and the second resistance (R2) ground connection, the reverse input end of the first amplifier (A1) the second electric capacity (C2) in parallel and the 3rd electricity
Resistance (R3) is connected to the outfan of the first amplifier (A1), the outfan of the first amplifier (A1) by the 4th resistance (R4) of series connection and
3rd electric capacity (C3) is connected to the positive input of the second amplifier (A2), and the positive input of the second amplifier (A2) is by the 5th electricity
Resistance (R5) ground connection, the reverse input end of the second amplifier (A2) passes through the 6th resistance (R6) ground connection, the second amplifier (A2) the most defeated
Entering end and be connected to the outfan of the second amplifier (A2) by the 7th resistance (R7), the outfan of the second amplifier (A2) is by the 8th electricity
Resistance (R8) is connected to signal output part (OUT), the 4th resistance (R4) and the 3rd electric capacity (C3) and is connected to by the 9th resistance (R9)
The outfan of the second amplifier (A2), the outfan of the second amplifier (A2) is connected to the 3rd amplifier (A3) by the tenth resistance (R10)
Positive input, the reverse input end of the 3rd amplifier (A3) passes through the 11st resistance (R11) ground connection, the 3rd amplifier (A3) defeated
Go out end and be connected to the reverse input end of four high guaily unit (A4) by the 12nd resistance (R12), the forward input of four high guaily unit (A4)
Holding by the 13rd resistance (R13) ground connection, the reverse input end of four high guaily unit (A4) is connected to the 4th by the 4th electric capacity (C4)
The outfan of amplifier (A4), the outfan of four high guaily unit (A4) is connected to the 3rd amplifier (A3) by the 14th resistance (R14)
Positive input, the outfan of the 3rd amplifier (A3) is connected to the base stage of audion (Q), three poles by the 15th resistance (R15)
The colelctor electrode of pipe (Q) is connected between the 4th resistance (R4) and the 3rd electric capacity (C3), and the emitter stage of audion (Q) is by the 5th electricity
Hold (C5) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291436.5U CN205622840U (en) | 2016-04-11 | 2016-04-11 | A speaker circuit for english show teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620291436.5U CN205622840U (en) | 2016-04-11 | 2016-04-11 | A speaker circuit for english show teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622840U true CN205622840U (en) | 2016-10-05 |
Family
ID=57030038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620291436.5U Expired - Fee Related CN205622840U (en) | 2016-04-11 | 2016-04-11 | A speaker circuit for english show teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622840U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871408A (en) * | 2017-12-21 | 2018-04-03 | 冯雯雯 | A kind of intelligent apparatus for English teaching |
| CN108362993A (en) * | 2018-01-20 | 2018-08-03 | 江苏本川智能电路科技股份有限公司 | A kind of measuring device and its measurement method for multilayer wire girth sheets |
-
2016
- 2016-04-11 CN CN201620291436.5U patent/CN205622840U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871408A (en) * | 2017-12-21 | 2018-04-03 | 冯雯雯 | A kind of intelligent apparatus for English teaching |
| CN107871408B (en) * | 2017-12-21 | 2020-11-20 | 冯雯雯 | A intelligent device for english teaching |
| CN108362993A (en) * | 2018-01-20 | 2018-08-03 | 江苏本川智能电路科技股份有限公司 | A kind of measuring device and its measurement method for multilayer wire girth sheets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20190411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |