CN2807365Y - Multimedia teaching master control machine - Google Patents
Multimedia teaching master control machine Download PDFInfo
- Publication number
- CN2807365Y CN2807365Y CN 200520110378 CN200520110378U CN2807365Y CN 2807365 Y CN2807365 Y CN 2807365Y CN 200520110378 CN200520110378 CN 200520110378 CN 200520110378 U CN200520110378 U CN 200520110378U CN 2807365 Y CN2807365 Y CN 2807365Y
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- audio frequency
- audio
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- output circuit
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Abstract
The utility model discloses a multimedia teaching master control machine comprising a power amplifying machine audio frequency amplifying circuit, a control circuit board, an audio frequency three-path switch, a transformer, an audio frequency input and output circuit, a video frequency screen division device, an audio frequency output circuit and a tape recorder, wherein the control circuit board is connected with the power amplifying machine audio frequency amplifying circuit which is simultaneously connected with the audio frequency input and output circuit and the audio frequency three-path switch; the audio frequency three-path switch is connected with the audio frequency output circuit, wherein the two paths B and C are added with different loads so that an ear microphone and a sound box can normally work; the ear microphone is prevented from being damage caused by oversize power; the tape recorder is connected with an audio frequency input and output circuit; the transformer is connected with the power amplifying machine audio frequency amplifying circuit; the input end of the transformer is connected with a power supply; the video frequency screen division device is connected with a video frequency input end of an outside computer and is used for amplifying video signals which are output to a displayer of a student terminal. The master control machine has the advantages of simple structure, low cost and convenient operation; the utility model can meet a plurality of needs and can control multiple-path audio and video frequency output.
Description
Technical field
The utility model relates to a kind of instructional device, relates in particular to a kind of multi-functional multimedia teaching main control computer that has.
Background technology
Along with the development of society and the progress of science and technology, high-tech has been penetrated into all trades and professions, the teaching method of old-fashioned spoon-feed is constantly substituted by the teaching equipment in modern times such as the Web-based instruction, not only alleviated teacher's burden, also make them go if having time to refresh one's knowledge, improve constantly the teaching level of controlling oneself, and, with abstract learning content imagery, visualize, specialize, especially for language learnings such as English, play the effect and the effect of getting twice the result with half the effort, only also improved simultaneously students'interest in learning and enthusiasm, improved learning efficiency, but the phonetic teaching equipment price costliness that is applied to modern teaching of Cun Zaiing in the market, the structure more complicated, not easy to operate, some functional effect is bad or inapplicable etc., is unsuitable for remote districts and older person use.
Summary of the invention
In order to solve the problem of above-mentioned existence, the utility model provides a kind of degree of integration height, a tractor serves several purposes, simple to operate, and low-cost multimedia teaching main control computer is used for the interconnecting device between computer, DVD, VCD, CD, sound-track engraving apparatus etc. and student terminal.
The technical solution of the utility model is achieved in that a kind of multimedia teaching main control computer, comprise the power amplifier audio amplifier circuit, control circuit board, audio frequency 3 way switch, transformer, the audio frequency imput output circuit, the video separated screen device, audio output circuit and sound-track engraving apparatus, wherein control circuit board is connected with the power amplifier audio amplifier circuit, the power amplifier audio amplifier circuit is connected with audio frequency 3 way switch with the audio frequency imput output circuit simultaneously, audio frequency 3 way switch are connected with audio frequency output, sound-track engraving apparatus is connected with the audio frequency input and output, transformer links to each other with the power amplifier audio amplifier circuit, the input termination power of transformer, the video separated screen device is connected with the video input of external computer, and connects power supply to the power supply of video separated screen device.
On between the output terminal of described audio frequency 3 way switch and the input end of audio output circuit three tunnel, the wherein different load of serial connection on the two-way.
Compared with prior art, the beneficial effects of the utility model are:
1, this multimedia teaching main control computer not only can be connected play multimedia software with computer, can connect DVD, VCD, CD player simultaneously;
2, the multimedia software of computer and DVD broadcast can be connected to one to 100 student terminal, can reach audio frequency and video and share;
3, can realize multichannel audio-video frequency output control, be applicable to that the simultanous conducting of lesson plays extraordinary effect;
4, this multimedia teaching main control computer carries sound-track engraving apparatus, makes the broadcast tape more convenient, can externally reach up to a hundred headsets and external speaker simultaneously, and can work at the same time or separately as required;
5, this multimedia teaching main control computer has improved degree of integration, and one-machine-multi-function is realized multiple needs;
6, the multimedia teaching main control computer is simple in structure, and failure rate is low, and applicability is strong; Simple to operate, low price is easy to penetration and promotion.
Description of drawings
In Fig. 1 dotted line is the utility model circuit structure block diagram;
Fig. 2 is the utility model rear panel structure synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, multimedia teaching main control computer internal circuit configuration block diagram as shown in Figure 1, comprising power amplifier audio amplifier circuit 1, control circuit board 2, audio frequency 3 way switch 4, transformer 8, audio frequency imput output circuit 3, video separated screen device 5, audio output circuit 6 and sound-track engraving apparatus 7, wherein control circuit board 2 is connected with power amplifier audio amplifier circuit 1, power amplifier audio amplifier circuit 1 is connected with audio frequency imput output circuit 3, be connected with audio frequency 3 way switch 4 again simultaneously, audio frequency 3 way switch 4 comprise A, B, C three tunnel outputs, by being connected in series load 20 on the B road and serial connection load 21 on the C road, load 20 and the load 21 of serial connection is connected with audio output circuit 6 for different loads again, because the power difference of load, make its output power produce difference, to adapt to the needs of different capacity audio frequency apparatus such as headset, to prevent that headset from burning out because of power is excessive, on the A road, be not connected in series load; Audio output circuit 6 back control panels are provided with audio A road output interface 11, audio frequency B road output interface 14 and audio frequency C road output interface 16; Sound-track engraving apparatus 7 is connected with audio frequency imput output circuit 3, and audio frequency imput output circuit 3 back control panels are provided with audio input interface 9 and audio output interface 10; Transformer 8 links to each other with power amplifier audio amplifier circuit 1, the input termination power of transformer 8, video separated screen device 5 is connected with the video input of external computer, outputs on the display of student terminal again, thereby realize that multimedia audio, video transmission to student terminal, reach the purpose of information sharing.
As shown in Figure 2, the rear panel structure synoptic diagram of multimedia teaching main control computer, plate is provided with audio input interface 9 in the back, audio output interface 10, audio A road output interface 11,8 road video separated screen device output interfaces 12, video input interface 13, B road audio output interface 14, monitor socket 15, C road audio output interface 16, audio A road output button 17, audio frequency B road output button 18 and audio frequency C road output button 19, these interfaces are used for the signal of multimedia teaching main control computer inside such as audio-video signal are transferred to external unit such as student terminal, monitor interface 15 and make the teacher must not start total system, just can utilize computer to prepare lessons.
Claims (2)
1, a kind of multimedia teaching main control computer, comprise the power amplifier audio amplifier circuit, control circuit board, transformer and audio frequency imput output circuit, it is characterized in that also comprising audio frequency 3 way switch, the video separated screen device, audio output circuit and sound-track engraving apparatus, wherein control circuit board is connected with the power amplifier audio amplifier circuit, the power amplifier audio amplifier circuit is connected with the audio frequency three-way switch with the audio frequency imput output circuit simultaneously, audio frequency 3 way switch are connected with audio frequency output, sound-track engraving apparatus is connected with the audio frequency input and output, transformer links to each other with the power amplifier audio amplifier circuit, the input termination power of transformer, the video separated screen device is connected with the video input of external computer.
2, multimedia teaching main control computer according to claim 1 is characterized in that on three tunnel between the input end of the output terminal of described audio frequency 3 way switch and audio output circuit the wherein different load of serial connection on the two-way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110378 CN2807365Y (en) | 2005-06-23 | 2005-06-23 | Multimedia teaching master control machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520110378 CN2807365Y (en) | 2005-06-23 | 2005-06-23 | Multimedia teaching master control machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807365Y true CN2807365Y (en) | 2006-08-16 |
Family
ID=36921664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520110378 Expired - Fee Related CN2807365Y (en) | 2005-06-23 | 2005-06-23 | Multimedia teaching master control machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807365Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109064788A (en) * | 2018-08-14 | 2018-12-21 | 董必胜 | It is a kind of can subliminal learning learning device |
-
2005
- 2005-06-23 CN CN 200520110378 patent/CN2807365Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109064788A (en) * | 2018-08-14 | 2018-12-21 | 董必胜 | It is a kind of can subliminal learning learning device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |