CN104391151B - A kind of oscillograph based on triple amplifying circuits - Google Patents
A kind of oscillograph based on triple amplifying circuits Download PDFInfo
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- CN104391151B CN104391151B CN201410679574.6A CN201410679574A CN104391151B CN 104391151 B CN104391151 B CN 104391151B CN 201410679574 A CN201410679574 A CN 201410679574A CN 104391151 B CN104391151 B CN 104391151B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
- G01R13/0218—Circuits therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
- G01R13/0218—Circuits therefor
- G01R13/0272—Circuits therefor for sampling
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Abstract
The invention discloses a kind of oscillograph based on triple amplifying circuits, including attenuator, voltage follower, amplifier, AD sample circuits, controller, triggers circuit, clock module, data buffer, display；Wherein attenuator, voltage follower, amplifier, AD sample circuits, data buffer, display are sequentially connected, and AD sample circuits are also connected with clock module, triggers circuit respectively；The trigger is connected with data buffer, controller respectively；The present invention adds attenuator and amplifier in signal receiving front-end, front-end processing is carried out to the signal for entering, reduce the entrance of interference signal, the signal to noise ratio of signal is kept, the degree of accuracy of signal is improved, while operation of the display with touch function when more convenient to use, improve operating efficiency, internal setting more hommization, novel in design, it is worthy to be popularized.
Description
Technical field
The invention discloses a kind of oscillograph based on triple amplifying circuits, belongs to signal handling equipment technical field.
Background technology
Oscillograph is a kind of quite varied electronic measuring instrument of purposes.It can invisible converting electrical signal into
Observable image, is easy to people to study the change procedure of various electrical phenomenas.Oscillograph using narrow, be made up of high-velocity electrons
Electron beam, beat on the panel for scribbling fluorescent material, so that it may produce tiny luminous point, this is the work of traditional analog oscilloscope
Make principle.In the presence of measured signal, electron beam just looks like the nib of one-pen, can depict measured signal on panel
Instantaneous value change curve.The time dependent wavy curve of various unlike signal amplitudes can be observed using oscillograph, may be used also
To test a variety of electricity, such as voltage, electric current, frequency, phase contrast, modulation etc. with it.
Oscillograph is the characteristic using electronics oscilloscope tube, and the alternate electrical signal that human eye directly cannot be observed is converted into figure
Picture, shows on fluorescent screen so as to the electronic measuring instrument of measurement.It is observation digital circuit experiment phenomenon, analyzes in experiment
Problem, the requisite important instrument of measurement experimental result.
With the development of electronic technology, the progress of signal processing technology, existing equipment and test instrunment are to oscillographic
More and more higher is required, oscillographic signal processing precision and accuracy how is improved, it has also become need most the problem of solution at present.
Patent No. 201210577495.5, patent name are a kind of oscillograph, and the patent is for problem in prior art
The problem of solution is proposed, but the patent simply describes the means for realizing oscillograph existing capability, do not propose to improve
Mode.
Patent No. 201210509747.0, patent name are a kind of oscillograph, and the patent indicates prior art oscillography
The problem that device is present, the patent also simply propose the problem solved from shell, how are not given from internal solve problem
Mode, solves DeGrain.
Meanwhile, also have on the concrete structure of amplifier circuit in prior art where requiring further improvement, with reality
Now reduce circuit power consumption, improve the effect of amplification effect.
Content of the invention
The technical problem to be solved is：For the defect of prior art, there is provided a kind of based on triple amplification electricity
The oscillograph on road, adds attenuator and amplifier in signal receiving front-end, carries out front-end processing to the signal for entering, and reduces dry
Disturb the entrance of signal.
The present invention is employed the following technical solutions for solving above-mentioned technical problem：
A kind of oscillograph based on triple amplifying circuits, including attenuator, voltage follower, amplifier, AD sampling electricity
Road, controller, triggers circuit, clock module, data buffer, display；
Wherein attenuator, voltage follower, amplifier, AD sample circuits, data buffer, display are sequentially connected, AD
Sample circuit is also connected with clock module, triggers circuit respectively；The triggers circuit respectively with data buffer, controller phase
Even；
Input signal enters attenuator, the amplitude of signal and gain is decayed via attenuator, the letter after decay
Entering amplifier after number entrance voltage follower carries out signal gain amplification, and the signal after amplification enters AD sample circuits,
AD sample circuits are sampled to signal, and the signal after being sampled is stored in data buffer, and is shown by display；
The clock module provides sampling clock for AD sample circuits, and controller control triggers circuit starts AD sample circuits
And data buffer；
The display is touch screen, is provided with operation interface, is shown by display screen, for operating in controller.
The particular circuit configurations of the amplifier include the first to the 11st resistance, the first to the 9th electric capacity, first to
Three audions, wherein, the first electric capacity one end respectively with the 3rd electric capacity, one end of the 4th electric capacity, the base stage phase of the first diode
Connection, the other end of the 4th electric capacity is connected with one end of second resistance, the other end of second resistance respectively with the 6th resistance
One end, one end of 3rd resistor, one end of the 9th electric capacity, one end of the 5th resistance, one end of the 7th resistance are connected, the 3rd electricity
The other end of appearance one end respectively with first resistor, one end of the tenth resistance are connected, the other end of first resistor and the 6th electricity
The other end of resistance is connected, the other end of the tenth resistance one end respectively with the 9th resistance, the colelctor electrode of the 3rd audion, the 7th
One end of electric capacity is connected, the other end of the 7th electric capacity ground connection, the other end of the 9th resistance one end respectively with the 6th electric capacity, the
One end of 11 resistance is connected, the other end of the 6th electric capacity one end respectively with the 8th resistance, the emitter stage of the 3rd audion
It is connected, the other end of the 11st resistance base stage respectively with the 3rd audion, the emitter stage of the second audion, the 8th electric capacity
One end is connected, and one end of respectively with the second electric capacity of the other end of the 8th resistance, one end of the 4th resistance are connected, the second electric capacity
The other end and the emitter stage of the first diode be connected, the colelctor electrode of the first diode other end respectively with 3rd resistor,
One end of 5th electric capacity is connected, and the base stage of the other end and the second audion of the 5th electric capacity is connected, the collection of the second audion
The other end of electrode and the 5th resistance is connected, and the other end of the other end and the 7th resistance of the 8th electric capacity is connected.
Used as the further prioritization scheme of the present invention, the chip model that the attenuator is adopted is for HMC274.
Used as the further prioritization scheme of the present invention, the chip model of the voltage follower is LM358.
Used as the further prioritization scheme of the present invention, the controller adopts single-chip microcomputer, the model of the single-chip microcomputer
STC90C51.
Used as the further prioritization scheme of the present invention, the chip that the clock module is adopted is for DS1302.
As the further prioritization scheme of the present invention, also include keyboard, the keyboard is connected with controller.
As the present invention further prioritization scheme, also include wave filter, the wave filter be arranged at voltage follower and
Between amplifier, amplifier is entered after filtering after the filtering of device via the signal that voltage follower is exported and be amplified.
The present invention adopts above technical scheme compared with prior art, with following technique effect：The present invention is connect in signal
Receive front end and add attenuator and amplifier, front-end processing is carried out to the signal for entering, reduce the entrance of interference signal, keep signal
Signal to noise ratio, improve signal degree of accuracy, while display with touch function more convenient to use when operation, improve operation
Efficiency, internal setting more hommization are novel in design, are worthy to be popularized.Meanwhile, the design of triple audions that the present invention is adopted,
The output of amplifier is improve, the concrete power consumption of circuit is reduced.
Description of the drawings
Fig. 1 is the circuit module connection diagram of the present invention.
Fig. 2 is the amplifier circuit schematic diagram of the present invention,
Wherein：R1 to R11 is respectively the first to the 11st resistance, and C1 to C9 is respectively the first to the 9th electric capacity, D1 to D3
Respectively first to the 3rd audion.
Specific embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element is represented to same or similar label eventually or the element with same or like function.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are it is understood that the function of the correlation module that is related in the present invention and its realization
It is in the device of the hardware after improvement and its composition, device or system to carry conventional computer software programs in prior art
Or relevant agreement is achieved that, it is not that computer software programs of the prior art or relevant agreement are improved.For example,
Computer hardware system after improvement still can realize the spy of the hardware system by loading existing operation system of software
Determine function.It is understood, therefore, that the innovation of the present invention is improvement and its company to hardware module in prior art
Connect syntagmatic, rather than be only to the improvement in hardware module for the software realizing carrying about function or agreement.
Those skilled in the art of the present technique are it is understood that the correlation module that mentions in the present invention is performed for the application
Described in operation, method, the step in flow process, measure, one or more in scheme of hardware device.The hardware device can
Purpose needed for thinking and specially design and manufacture, or can also adopt known device in general purpose computer or known its
His hardware device.The general purpose computer is activated or reconstructs with having the procedure Selection being stored in which.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
Individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that arranging used in the description of the present invention
Diction " including " refers to there is the feature, integer, step, operation, element and/or component, but it is not excluded that existing or adding
Other features one or more, integer, step, operation, element, component and/or their group.It should be understood that when we claim unit
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or can also exist
Intermediary element.Additionally, " connection " used herein or " coupling " can include wireless connection or couple.Wording used herein
"and/or" includes one or more associated any cells for listing item and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein（Including technology art
Language and scientific terminology）There is the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
It is understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or excessively formal implication is explaining.
Below in conjunction with the accompanying drawings technical scheme is described in further detail：
The circuit module connection diagram of the present invention is as shown in figure 1, a kind of oscillograph based on triple amplifying circuits, bag
Include attenuator, voltage follower, amplifier, AD sample circuits, controller, triggers circuit, clock module, data buffer, aobvious
Show device；
Wherein attenuator, voltage follower, amplifier, AD sample circuits, data buffer, display are sequentially connected, AD
Sample circuit is also connected with clock module, triggers circuit respectively；The trigger is connected with data buffer, controller respectively；
Input signal enters attenuator, the amplitude of signal and gain is decayed via attenuator, the letter after decay
Entering amplifier after number entrance voltage follower carries out signal gain amplification, and the signal after amplification enters AD sample circuits,
AD sample circuits are sampled to signal, and the signal after being sampled is stored in data buffer, and is shown by display；
The clock module provides sampling clock for AD sample circuits, and controller control triggers circuit starts AD sample circuits
And data buffer；
The display is touch screen, is provided with operation interface, is shown by display screen, for operating in controller.
Also wave filter can be set between the voltage follower and amplifier, signal is filtered, filtering clutter dry
Disturb, while also wave filter can be concurrently or separately arranged after amplifier, be mixed into noise signal in the signal after amplification, wave filter
To be arranged more accurate of filter range.
The present invention amplifier circuit schematic diagram as shown in Fig. 2 the particular circuit configurations of the amplifier include first to
11st resistance, the first to the 9th electric capacity, the first to the 3rd audion, wherein, the first electric capacity one end respectively with the 3rd electric capacity,
One end of 4th electric capacity, the base stage of the first diode are connected, and the other end of the 4th electric capacity is connected with one end of second resistance,
The other end of second resistance one end respectively with the 6th resistance, one end of 3rd resistor, one end of the 9th electric capacity, the 5th resistance
One end, one end of the 7th resistance are connected, the other end of the 3rd electric capacity one end respectively with first resistor, one end of the tenth resistance
It is connected, the other end of the other end of first resistor and the 6th resistance is connected, the other end of the tenth resistance is electric with the 9th respectively
One end of resistance, the colelctor electrode of the 3rd audion, one end of the 7th electric capacity are connected, the other end ground connection of the 7th electric capacity, the 9th electricity
The other end of resistance one end respectively with the 6th electric capacity, one end of the 11st resistance are connected, the other end of the 6th electric capacity respectively and
One end of 8th resistance, the emitter stage of the 3rd audion are connected, the other end of the 11st resistance respectively with the 3rd audion
Base stage, the emitter stage of the second audion, one end of the 8th electric capacity are connected, respectively with the second electric capacity of the other end of the 8th resistance
One end, one end of the 4th resistance are connected, and the emitter stage of the other end of the second electric capacity and the first diode is connected, the one or two pole
The colelctor electrode of the pipe other end respectively with 3rd resistor, one end of the 5th electric capacity are connected, the other end and second of the 5th electric capacity
The base stage of audion is connected, and the other end of the colelctor electrode of the second audion and the 5th resistance is connected, the 8th electric capacity another
End is connected with the other end of the 7th resistance.
Used as the further prioritization scheme of the present invention, the chip model that the attenuator is adopted is may also be employed for HMC274
The attenuator that resistance is set up, specifically using which kind of mode according to the size of circuit board or can realize the requirement of precision to be selected
Select.
Used as the further prioritization scheme of the present invention, the chip model of the voltage follower is LM358, voltage follow
Device, as the term suggests, it is to realize that output voltage follows an electron-like element of the change of input voltage.That is, voltage follow
The voltage amplification factor of device is permanent to be less than and is close to 1.The distinguishing feature of voltage follower is exactly that input impedance is high, and output impedance
Low, the load capacity of rear end is improved, the carrying capacity of circuit is improved.
Used as the further prioritization scheme of the present invention, the controller adopts single-chip microcomputer, the model of the single-chip microcomputer
STC90C51.
Used as the further prioritization scheme of the present invention, for DS1302, the chip can be straight for the chip that the clock module is adopted
Connect and be connected with single-chip microcomputer, realize clock, it is to avoid the conventional problem that clock is separately provided inside single-chip microcomputer, go wrong just
In lookup.
As the further prioritization scheme of the present invention, also include keyboard, the keyboard is connected with controller, in the present invention
Display has contact action function, adds both cooperatings after keyboard, convenient during use, improves operating efficiency, one
When side goes wrong, there is alternative.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned enforcement
Mode, in the ken that those of ordinary skill in the art possess, can be with the premise of without departing from present inventive concept
Make a variety of changes.The above, is only presently preferred embodiments of the present invention, not makees any pro forma limit to the present invention
System, although the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any is familiar with this professional skill
Art personnel, in the range of without departing from technical solution of the present invention, when the technology contents using the disclosure above make a little change or
The Equivalent embodiments of equivalent variations are modified to, as long as being without departing from technical solution of the present invention content, according to the technology reality of the present invention
Matter, within the spirit and principles in the present invention, any simple modification, equivalent and improvement that above example is made
Deng still falling within the protection domain of technical solution of the present invention.
Claims (7)
1. a kind of oscillograph based on triple amplifying circuits, it is characterised in that：Including attenuator, voltage follower, amplifier, AD
Sample circuit, controller, triggers circuit, clock module, data buffer, display；
Wherein attenuator, voltage follower, amplifier, AD sample circuits, data buffer, display are sequentially connected, and AD samples
Circuit is also connected with clock module, triggers circuit respectively；The triggers circuit is connected with data buffer, controller respectively；
Input signal enters attenuator, the amplitude of signal is decayed via attenuator, and the signal after decay enters voltage
Entering amplifier after follower carries out signal gain amplification, and the signal after amplification enters AD sample circuits, AD sample circuits
Signal is sampled, the signal after being sampled is stored in data buffer, and is shown by display；
The clock module provides sampling clock for AD sample circuits, and controller control triggers circuit starts AD sample circuit sums
According to buffer；
The display is touch screen, is provided with operation interface, is shown by display screen, for operating in controller；
The particular circuit configurations of the amplifier include the first to the 11st resistance, the first to the 9th electric capacity, first to the 3rd 3
Pole pipe, wherein, the first electric capacity one end respectively with the 3rd electric capacity, one end of the 4th electric capacity, the base stage of the first diode are connected,
The other end of the 4th electric capacity is connected with one end of second resistance, the other end of second resistance one end respectively with the 6th resistance,
One end of 3rd resistor, one end of the 9th electric capacity, one end of the 5th resistance, one end of the 7th resistance are connected, the 3rd electric capacity
Other end one end respectively with first resistor, one end of the tenth resistance are connected, the other end of first resistor and the 6th resistance
The other end is connected, the other end of the tenth resistance one end respectively with the 9th resistance, the colelctor electrode of the 3rd audion, the 7th electric capacity
One end be connected, the other end of the 7th electric capacity ground connection, the other end of the 9th resistance one end respectively with the 6th electric capacity, the 11st
One end of resistance is connected, and the other end of the 6th electric capacity one end respectively with the 8th resistance, the emitter stage of the 3rd audion are connected
Connect, the other end of the 11st resistance base stage respectively with the 3rd audion, the emitter stage of the second audion, one end of the 8th electric capacity
Be connected, one end of respectively with the second electric capacity of the other end of the 8th resistance, one end of the 4th resistance are connected, the second electric capacity another
One end is connected with the emitter stage of the first diode, the colelctor electrode of the first diode other end respectively with 3rd resistor, the 5th
One end of electric capacity is connected, and the base stage of the other end and the second audion of the 5th electric capacity is connected, the colelctor electrode of the second audion
It is connected with the other end of the 5th resistance, the other end of the other end and the 7th resistance of the 8th electric capacity is connected.
2. a kind of oscillograph based on triple amplifying circuits as claimed in claim 1, it is characterised in that：The attenuator is adopted
Chip model be HMC274.
3. a kind of oscillograph based on triple amplifying circuits as claimed in claim 1, it is characterised in that：The voltage follower
Chip model be LM358.
4. a kind of oscillograph based on triple amplifying circuits as claimed in claim 3, it is characterised in that：The controller is adopted
Single-chip microcomputer, model STC90C51 of the single-chip microcomputer.
5. a kind of oscillograph based on triple amplifying circuits as claimed in claim 1, it is characterised in that：The clock module is adopted
Chip is DS1302.
6. a kind of oscillograph based on triple amplifying circuits as claimed in claim 1, it is characterised in that：Also include keyboard, institute
State keyboard to be connected with controller.
7. a kind of oscillograph based on triple amplifying circuits as claimed in claim 1, it is characterised in that：Also include wave filter,
The wave filter is arranged between voltage follower and amplifier, the filter of the signal device after filtering exported via voltage follower
Enter amplifier to be amplified after ripple.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094297.6A CN106771458A (en) | 2014-11-25 | 2014-11-25 | Oscillograph |
| CN201410679574.6A CN104391151B (en) | 2014-11-25 | 2014-11-25 | A kind of oscillograph based on triple amplifying circuits |
| CN201710094278.3A CN106950410A (en) | 2014-11-25 | 2014-11-25 | Oscillograph based on triple amplifying circuits |
| CN201710094298.0A CN106908644A (en) | 2014-11-25 | 2014-11-25 | A kind of oscillograph based on triple amplifying circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410679574.6A CN104391151B (en) | 2014-11-25 | 2014-11-25 | A kind of oscillograph based on triple amplifying circuits |
Related Child Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710094298.0A Division CN106908644A (en) | 2014-11-25 | 2014-11-25 | A kind of oscillograph based on triple amplifying circuits |
| CN201710094278.3A Division CN106950410A (en) | 2014-11-25 | 2014-11-25 | Oscillograph based on triple amplifying circuits |
| CN201710094297.6A Division CN106771458A (en) | 2014-11-25 | 2014-11-25 | Oscillograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104391151A CN104391151A (en) | 2015-03-04 |
| CN104391151B true CN104391151B (en) | 2017-03-15 |
Family
ID=52609076
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710094297.6A Pending CN106771458A (en) | 2014-11-25 | 2014-11-25 | Oscillograph |
| CN201410679574.6A Active CN104391151B (en) | 2014-11-25 | 2014-11-25 | A kind of oscillograph based on triple amplifying circuits |
| CN201710094278.3A Withdrawn CN106950410A (en) | 2014-11-25 | 2014-11-25 | Oscillograph based on triple amplifying circuits |
| CN201710094298.0A Withdrawn CN106908644A (en) | 2014-11-25 | 2014-11-25 | A kind of oscillograph based on triple amplifying circuits |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710094297.6A Pending CN106771458A (en) | 2014-11-25 | 2014-11-25 | Oscillograph |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710094278.3A Withdrawn CN106950410A (en) | 2014-11-25 | 2014-11-25 | Oscillograph based on triple amplifying circuits |
| CN201710094298.0A Withdrawn CN106908644A (en) | 2014-11-25 | 2014-11-25 | A kind of oscillograph based on triple amplifying circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN106771458A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10282152A (en) * | 1997-04-02 | 1998-10-23 | Kokusai Electric Co Ltd | Oscilloscope, facsimile transmission system, and communication system |
| JP2001174484A (en) * | 1999-11-22 | 2001-06-29 | Tektronix Inc | Alternate trigger apparatus and method for digital storage oscilloscope |
| CN201540323U (en) * | 2009-11-02 | 2010-08-04 | 北京普源精电科技有限公司 | Digital oscilloscope with equivalent sampling function |
| CN103185821A (en) * | 2011-12-29 | 2013-07-03 | 北京普源精电科技有限公司 | Digital oscilloscope with front end attenuation function |
| CN203551628U (en) * | 2013-08-29 | 2014-04-16 | 江西渝州科技职业学院 | Digital oscilloscope for measuring power supply |
| CN103884889A (en) * | 2012-12-21 | 2014-06-25 | 北京普源精电科技有限公司 | Oscilloscope with improved front-end circuit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08162859A (en) * | 1994-11-29 | 1996-06-21 | Hitachi Ltd | Multi-stage amplifier |
| JP3406493B2 (en) * | 1997-10-22 | 2003-05-12 | 安藤電気株式会社 | Signal processing circuit of electro-optic probe |
| US7986591B2 (en) * | 2009-08-14 | 2011-07-26 | Taiwan Semiconductor Manufacturing Company, Ltd. | Ultra high resolution timing measurement |
| CN102053172B (en) * | 2009-11-10 | 2012-11-14 | 北京普源精电科技有限公司 | High-resistance broadband attenuation circuit and oscilloscope using same |
| US9804200B2 (en) * | 2012-02-15 | 2017-10-31 | Keysight Technologies, Inc. | Digital oscilloscope comprising multiple data acquisition pathways |
| CN103116053B (en) * | 2013-01-31 | 2015-11-04 | 福建利利普光电科技有限公司 | A kind of automatic range measuring method for measuring digital storage oscilloscope |
| CN203465330U (en) * | 2013-07-08 | 2014-03-05 | 东莞市路晨电子科技有限公司 | Oscilloscope front-end processing circuit |
-
2014
- 2014-11-25 CN CN201710094297.6A patent/CN106771458A/en active Pending
- 2014-11-25 CN CN201410679574.6A patent/CN104391151B/en active Active
- 2014-11-25 CN CN201710094278.3A patent/CN106950410A/en not_active Withdrawn
- 2014-11-25 CN CN201710094298.0A patent/CN106908644A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10282152A (en) * | 1997-04-02 | 1998-10-23 | Kokusai Electric Co Ltd | Oscilloscope, facsimile transmission system, and communication system |
| JP2001174484A (en) * | 1999-11-22 | 2001-06-29 | Tektronix Inc | Alternate trigger apparatus and method for digital storage oscilloscope |
| CN201540323U (en) * | 2009-11-02 | 2010-08-04 | 北京普源精电科技有限公司 | Digital oscilloscope with equivalent sampling function |
| CN103185821A (en) * | 2011-12-29 | 2013-07-03 | 北京普源精电科技有限公司 | Digital oscilloscope with front end attenuation function |
| CN103884889A (en) * | 2012-12-21 | 2014-06-25 | 北京普源精电科技有限公司 | Oscilloscope with improved front-end circuit |
| CN203551628U (en) * | 2013-08-29 | 2014-04-16 | 江西渝州科技职业学院 | Digital oscilloscope for measuring power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104391151A (en) | 2015-03-04 |
| CN106771458A (en) | 2017-05-31 |
| CN106908644A (en) | 2017-06-30 |
| CN106950410A (en) | 2017-07-14 |
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