CN203673724U - Multi-waveform generator demonstration device - Google Patents
Multi-waveform generator demonstration device Download PDFInfo
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- CN203673724U CN203673724U CN201420040452.8U CN201420040452U CN203673724U CN 203673724 U CN203673724 U CN 203673724U CN 201420040452 U CN201420040452 U CN 201420040452U CN 203673724 U CN203673724 U CN 203673724U
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Abstract
The utility model discloses a multi-waveform generator demonstration device, and relates to a waveform demonstration teaching aid applied to a physics experiment. The device provided by the utility model solves the problem that the existing two-channel oscilloscope applied to the experiment cannot meet the experiment requirement of multi-signal input. The device provided by the utility model comprises a square wave generator, a sawtooth wave generator, a triangle wave generator, a sine wave generator, an oscilloscope, four multi-trace identification input circuits and four manual switches. The square wave signal output ends of the square wave generator, the sawtooth wave generator, the triangle wave generator and the sine wave generator are connected with the input end of a multi-trace identification input circuit, and the output end of the multi-trace identification input circuit is connected with the input end of the oscilloscope through a manual switch. The multi-trace identification input circuits control the display of all signals on the oscilloscope.
Description
Technical field
The utility model relates to the waveform demonstration teaching aid that a kind of Physical Experiment is used.
Background technology
Oscillograph is a kind of purposes electronic measuring instrument very widely.It can become observable image invisible naked eyes converting electrical signal, is convenient to people and studies the change procedure of various electrical phenomenas.Therefore, oscillograph is widely used in Physical Experiment, and the oscillograph that experiment adopts is 2 cheap oscilloscope channels mostly, show one or both waveforms simultaneously, input signal connects limited, can not realize the input of multiple signals, can not meet multiple signals and show teaching requirement.Such as square-wave generator, saw-toothed wave generator, triangular-wave generator and sine-wave generator are all laboratory common equipments, in the time of demonstration, one of them can only be connected on to the demonstration of oscillograph input end, demonstrate after a kind of waveform, again other waveform generator is connected with oscillograph input end, continue demonstration, such presentation process wastes time and energy, and loses time.
If adopt oscillographs more than 4 passages can meet requirement of experiment, but can be forced to halt because it is expensive, expensive instrument shall not be applied in experimental teaching conventionally.
Summary of the invention
The utility model object is the problem that cannot meet many signal input requirement of experiment in order to solve existing experiment 2 oscilloscope channels, and one kind of multiple waveform generator apparatus for demonstrating are provided.
Waveform Generator apparatus for demonstrating described in the utility model, it comprises that square-wave generator, saw-toothed wave generator, triangular-wave generator, sine-wave generator, oscillograph, track more than four distinguish input circuit and four hand switches;
Square-wave signal output terminal connection track more than of square-wave generator is distinguished the input end of input circuit, and these many tracks distinguish that the output terminal of input circuit connects oscillographic input end by a hand switch;
Sawtooth signal output terminal connection track more than of saw-toothed wave generator is distinguished the input end of input circuit, and these many tracks distinguish that the output terminal of input circuit connects oscillographic input end by a hand switch;
Triangular signal output terminal connection track more than of triangular-wave generator is distinguished the input end of input circuit, and these many tracks distinguish that the output terminal of input circuit connects oscillographic input end by a hand switch;
Sine wave signal output terminal connection track more than of sine-wave generator is distinguished the input end of input circuit, and these many tracks distinguish that the output terminal of input circuit connects oscillographic input end by a hand switch.
Advantage of the present utility model: Waveform Generator apparatus for demonstrating described in the utility model is simple in structure, with low cost, satisfied requirement of experiment flexibly, oscillograph input end can connect multi-signal generator, and experiment effect is very good.
Brief description of the drawings
Fig. 1 is the theory diagram of Waveform Generator apparatus for demonstrating described in the utility model;
Fig. 2 is the physical circuit figure of square-wave generator;
Fig. 3 is the physical circuit figure that many tracks are distinguished input circuit.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 to Fig. 3, Waveform Generator apparatus for demonstrating described in present embodiment, it comprises square-wave generator 1, saw-toothed wave generator 2, triangular-wave generator 3, sine-wave generator 4, oscillograph 7, more than four, track is distinguished input circuit 5 and four hand switches 6;
Square-wave signal output terminal connection track more than of square-wave generator 1 is distinguished the input end of input circuit 5, and these many tracks distinguish that the output terminal of input circuit 5 connects the input end of oscillograph 7 by a hand switch 6;
Sawtooth signal output terminal connection track more than of saw-toothed wave generator 2 is distinguished the input end of input circuit 5, and these many tracks distinguish that the output terminal of input circuit 5 connects the input end of oscillograph 7 by a hand switch 6;
Triangular signal output terminal connection track more than of triangular-wave generator 3 is distinguished the input end of input circuit 5, and these many tracks distinguish that the output terminal of input circuit 5 connects the input end of oscillograph 7 by a hand switch 6;
Sine wave signal output terminal connection track more than of sine-wave generator 4 is distinguished the input end of input circuit 5, and these many tracks distinguish that the output terminal of input circuit 5 connects the input end of oscillograph 7 by a hand switch 6.
Many tracks distinguish that input circuit 5 comprises NE555 time-base integrated circuit, resistance R 1, resistance R 2, resistance R 3, resistance R 4, slide rheostat Rp, capacitor C 1, capacitor C 2, electrochemical capacitor C3, diode D and relay indicating light LED;
7 pin of NE555 time-base integrated circuit connect the sliding end of slide rheostat Rp and one end of resistance R 4 simultaneously,
The other end of resistance R 4 connects the anode of relay indicating light LED, 4 pin and 8 pin of NE555 time-base integrated circuit simultaneously, and connects power supply+5V;
The stiff end of slide rheostat Rp connects one end of capacitor C 1,6 and 2 pin of NE555 time-base integrated circuit simultaneously;
The other end of capacitor C 1 connects 1 pin, one end of resistance R 2 and one end of resistance R 3 of NE555 time-base integrated circuit simultaneously, and ground connection;
The other end of resistance R 3 connects the positive pole of electrochemical capacitor C3 and the anode of diode D simultaneously, and the negative pole of electrochemical capacitor C3 connects and 3 pin of NE555 time-base integrated circuit and the negative electrode of relay indicating light LED simultaneously;
The other end of resistance R 2 connects one end of capacitor C 2 and one end of resistance R 1 simultaneously; The other end of capacitor C 2 is distinguished the input end of input circuit 5 as many tracks;
The other end of resistance R 1 connects the negative electrode of diode D, and the common node of resistance R 1 and diode D is distinguished the output terminal of input circuit 5 as many tracks.
Square-wave generator 1, saw-toothed wave generator 2, triangular-wave generator 3 and sine-wave generator 4 are existing equipments in laboratory, certainly, also can manually build, circuit theory is very simple, what Fig. 2 provided is a specific embodiment of square-wave generator 1, the square wave that the dutycycle of its output end vo ut1 output is 50%.
Square-wave generator 1, saw-toothed wave generator 2, triangular-wave generator 3 is all connected track more than with sine-wave generator 4 and distinguishes input circuit 5, its structure as shown in Figure 3, many tracks are distinguished the input end Vi connection side wave producer 1 of input circuit 5, saw-toothed wave generator 2, the output terminal of triangular-wave generator 3 or sine-wave generator 4, many tracks distinguish that the input end Vo of input circuit 5 connects oscillograph 7, NE555, capacitor C 1, resistance R 4 and slide rheostat Rp composition astable multivibrator, the vertical trace of oscillograph 7 sweep traces, determined its vertical deflection voltage by resistance R 1 and R2 both end voltage sum.When 3 pin of NE555 are exported high level, if the dividing potential drop in resistance R 1 is greater than input voltage Vi, the trace on oscillograph 7 disappears, and now, shows that input end is without input signal.
In the time of the 3 pin output low level of NE555, input signal itself is depended in the upright position of the trace on oscillograph 7, and now input end Vi has input signal to enter, and shows on oscillograph 7.Can control its switch separately by the power supply of controlling party wave producer 1, saw-toothed wave generator 2, triangular-wave generator 3 and sine-wave generator 4, control its whether output signal, on oscillograph 7, show, also four generators all can be opened, be controlled arbitrary road signal by every hand switch 6 on the way and show on oscillograph 7.After so simple connection, need not frequently dismantle again the annexation of each signal generator and oscillograph 7, just can realize the demonstration of multi-signal, arbitrarily switch good demonstration effect.
Claims (2)
1. Waveform Generator apparatus for demonstrating, it is characterized in that, it comprises that square-wave generator (1), saw-toothed wave generator (2), triangular-wave generator (3), sine-wave generator (4), oscillograph (7), track more than four distinguish input circuit (5) and four hand switches (6);
Square-wave signal output terminal connection track more than of square-wave generator (1) is distinguished the input end of input circuit (5), and these many tracks distinguish that the output terminal of input circuit (5) connects the input end of oscillograph (7) by a hand switch (6);
Sawtooth signal output terminal connection track more than of saw-toothed wave generator (2) is distinguished the input end of input circuit (5), and these many tracks distinguish that the output terminal of input circuit (5) connects the input end of oscillograph (7) by a hand switch (6);
Triangular signal output terminal connection track more than of triangular-wave generator (3) is distinguished the input end of input circuit (5), and these many tracks distinguish that the output terminal of input circuit (5) connects the input end of oscillograph (7) by a hand switch (6);
Sine wave signal output terminal connection track more than of sine-wave generator (4) is distinguished the input end of input circuit (5), and these many tracks distinguish that the output terminal of input circuit (5) connects the input end of oscillograph (7) by a hand switch (6).
2. Waveform Generator apparatus for demonstrating according to claim 1, it is characterized in that, many tracks distinguish that input circuit (5) comprises NE555 time-base integrated circuit, resistance R 1, resistance R 2, resistance R 3, resistance R 4, slide rheostat Rp, capacitor C 1, capacitor C 2, electrochemical capacitor C3, diode D and relay indicating light LED;
7 pin of NE555 time-base integrated circuit connect the sliding end of slide rheostat Rp and one end of resistance R 4 simultaneously,
The other end of resistance R 4 connects the anode of relay indicating light LED, 4 pin and 8 pin of NE555 time-base integrated circuit simultaneously, and connects power supply+5V;
The stiff end of slide rheostat Rp connects one end of capacitor C 1,6 and 2 pin of NE555 time-base integrated circuit simultaneously;
The other end of capacitor C 1 connects 1 pin, one end of resistance R 2 and one end of resistance R 3 of NE555 time-base integrated circuit simultaneously, and ground connection;
The other end of resistance R 3 connects the positive pole of electrochemical capacitor C3 and the anode of diode D simultaneously, and the negative pole of electrochemical capacitor C3 connects and 3 pin of NE555 time-base integrated circuit and the negative electrode of relay indicating light LED simultaneously;
The other end of resistance R 2 connects one end of capacitor C 2 and one end of resistance R 1 simultaneously; The other end of capacitor C 2 is distinguished the input end of input circuit (5) as many tracks;
The other end of resistance R 1 connects the negative electrode of diode D, and the common node of resistance R 1 and diode D is distinguished the output terminal of input circuit (5) as many tracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040452.8U CN203673724U (en) | 2014-01-22 | 2014-01-22 | Multi-waveform generator demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040452.8U CN203673724U (en) | 2014-01-22 | 2014-01-22 | Multi-waveform generator demonstration device |
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| Publication Number | Publication Date |
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| CN203673724U true CN203673724U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420040452.8U Expired - Fee Related CN203673724U (en) | 2014-01-22 | 2014-01-22 | Multi-waveform generator demonstration device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952338A (en) * | 2015-06-17 | 2015-09-30 | 青岛大学 | Electronic receiver experiment device |
| CN111105688A (en) * | 2020-02-16 | 2020-05-05 | 张国祥 | Portable tri-state waveform adapter |
| CN111239450A (en) * | 2020-03-24 | 2020-06-05 | 杭州韦亿信电子科技有限公司 | Signal generator |
| CN113100784A (en) * | 2021-03-29 | 2021-07-13 | 合肥诺和电子科技有限公司 | CSI anesthesia depth index signal generator |
-
2014
- 2014-01-22 CN CN201420040452.8U patent/CN203673724U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952338A (en) * | 2015-06-17 | 2015-09-30 | 青岛大学 | Electronic receiver experiment device |
| CN111105688A (en) * | 2020-02-16 | 2020-05-05 | 张国祥 | Portable tri-state waveform adapter |
| CN111239450A (en) * | 2020-03-24 | 2020-06-05 | 杭州韦亿信电子科技有限公司 | Signal generator |
| CN113100784A (en) * | 2021-03-29 | 2021-07-13 | 合肥诺和电子科技有限公司 | CSI anesthesia depth index signal generator |
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| Date | Code | Title | Description |
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| 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: 20140625 Termination date: 20160122 |
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| EXPY | Termination of patent right or utility model |