CN110751888A - Hierarchical analog circuit experimental box - Google Patents
Hierarchical analog circuit experimental box Download PDFInfo
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- CN110751888A CN110751888A CN201911037278.5A CN201911037278A CN110751888A CN 110751888 A CN110751888 A CN 110751888A CN 201911037278 A CN201911037278 A CN 201911037278A CN 110751888 A CN110751888 A CN 110751888A
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- circuit module
- module
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- experimental
- amplifier circuit
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
Abstract
A hierarchical analog circuit experimental box is characterized in that a power supply module, an instrument module, a direct current power supply circuit module, an integrated power amplifier circuit module, a discrete power amplifier circuit module, a silicon controlled rectifier circuit module, a differential amplifier circuit module, an integrated operational amplifier circuit module, a discrete element amplifier circuit module, a field effect transistor circuit module, an expandable experimental area, a discrete element plug-in area, a power line and a wire placing area are arranged in the experimental box, the input end and the output end of each circuit are led to a PCB panel through a PCB circuit to form a port capable of being plugged and unplugged quickly, and an input port is connected with an output port of a signal generator through a wire; the output port respectively measures or gives out alarm sound through the conducting wire, the measuring instrument and the loudspeaker phasor; the transmission of the intermediate signal is connected through a wire; the experimental box has stable performance and high flexibility, can meet the requirements of most students on the basic practical ability, and can provide more excellent students with the opportunity of comprehensive circuit design.
Description
Technical Field
The invention relates to an experimental box, in particular to a hierarchical analog circuit experimental box, and belongs to the technical field of circuit experiment operating equipment.
Background
At present, to university student's expansion experiment class, its laboratory equipment is partial to fixed laboratory glassware, mainly has the problem in several respects:
(1) electronic devices of each circuit unit are fixed, and the electronic devices cannot replace and be selected;
(2) each circuit unit is designed into a fixed structure, all devices are connected, students basically do not need to participate in the connection of the circuits, and only test data of related instruments need to be accessed;
(3) there is no scalable circuit for student practice except for basic experiments.
The above situation has consequences in the following respects:
students cannot select devices with different parameters to know different results of the devices with different parameters on a circuit, so that the students cannot deeply understand the action of related electronic devices and the working principle of the circuit; students lose the opportunity of designing and setting up circuits by themselves and cannot understand the principle and the design process of the circuits more thoroughly by hands by themselves; meanwhile, the curiosity and exploration desire of students are killed; finally, the experimental data measured by the existing laboratory operating equipment has no difference, so that the experimental data between classmates have plagiarism opportunities.
In a word, the defects of fixed circuit structure, fixed devices and non-expansibility experiments of the traditional analog circuit experiment box hinder the cultivation of practical ability, independent analysis of problems, problem solving and innovation of students.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the layered analog circuit experimental box which has stable performance and high flexibility, can meet the requirements of most students on basic practical ability, and can provide more excellent students with opportunities for comprehensive circuit design.
In order to achieve the purpose, the invention provides a layered analog circuit experimental box which comprises an experimental box, wherein a power supply module, an instrument module, a direct-current power supply circuit module, an integrated power amplifier circuit module, a discrete power amplifier circuit module, a silicon controlled rectifier circuit module, a differential amplifier circuit module, an integrated operational amplifier circuit module, a discrete element amplifier circuit module, a field effect transistor circuit module, a expansibility experimental area, a discrete element plug-in area, a power line and a lead placing area are arranged in the experimental box; the output port respectively measures or gives out alarm sound through the conducting wire, the measuring instrument and the loudspeaker phasor; the transmission of the intermediate signal is connected by a wire.
The power supply module provides working power supply for each circuit module, and the working voltage of the power supply module is 220V +/-10% and 50HZ alternating current.
As a further improvement of the invention, the instrument module comprises a digital direct current voltmeter, a function signal generator and a digital frequency meter, wherein the digital direct current voltmeter is used for measuring direct current voltage between 0 and 30V; the function signal generator can provide an alternating current signal source with the frequency of 10Hz to 1MHz, and the amplitude can output square waves of 0 to 20V, triangular waves of 0 to 15V and sine waves of 0 to 10V in four steps; the digital frequency meter can measure the signal frequency of 0-300 KHz.
As a further improvement of the invention, the direct-current power supply circuit module is a direct-current signal source and can provide a two-way-0.5V- +0.5V, -5V- +5V continuously adjustable direct-current power supply for the experimental circuit; two-gear adjustable direct current power supplies of-5V to-12V and +5V to + 27V; and a fixed power supply of +/-5V and +/-12V is provided.
As a further improvement of the invention, the power supply outputs have overcurrent protection and automatic recovery functions.
As a further improvement of the invention, the experiment connecting jack adopts a locking type gold-plated jack and is fixed on the experiment plate by welding, so that the test plate is not loosened and oxidized, has long service life, reliable connection and convenient and simple maintenance.
As a further improvement of the invention, the expansibility test area comprises the assembly and debugging of a function signal generator, a temperature monitoring and control circuit and the design and debugging of the multimeter consisting of operational amplifiers.
As a further improvement of the invention, the discrete component socket area comprises a connector of 50 resistance-capacitance components and a connector of 3 triodes.
The experimental box consists of a power supply module, an instrument module (a voltmeter, a function signal generator and a frequency meter), a direct-current power supply circuit module, an integrated power amplifier circuit module, a discrete power amplifier circuit module, a silicon controlled rectifier circuit module, a differential amplifier circuit module, an integrated operational amplifier circuit module, a discrete component amplifier circuit module, a field effect tube circuit module, a pluggable potentiometer area, a pluggable resistor area, a pluggable transistor area, a power line and a lead placing area; the input end and the output end of the circuit are led to the PCB panel through a PCB circuit to form a port capable of being plugged and unplugged quickly, and the input port is connected with the output port of the signal generator through a lead; the output port respectively measures or gives out alarm sound through the conducting wire and the measuring instrument or the loudspeaker phasor; the transmission of the intermediate signal is connected through a lead, the experimental box integrates each unit circuit, a digital direct current voltmeter, a function signal generator and a frequency meter, a required signal source can be provided for the experimental circuit without an external signal generator, and the voltmeter is connected in parallel with a corresponding device of each unit circuit module to measure voltage; the function signal generator provides square waves, triangular waves and sine waves as input signal sources for the unit circuit module; the frequency meter is used for measuring the frequency of the signal; the expandable experimental area can provide more learning space for excellent students and improve self-practice capability; the difficulty of each modular arrangement of the experimental box is increased from a basic test verification experiment to an expansibility design experiment, the basic practice ability exercise of most students can be met, the comprehensive circuit design opportunity can be provided for more excellent students, the traditional fool type experiment process is broken away, the experimental box needs the students to design circuits by themselves, different device parameters can be selected, the difference of experiment data brought by different parameters is tried, the research and learning interests of the students are stimulated, and the theoretical learning knowledge is consolidated more deeply. Different circuits can be combined to cultivate the practical ability and comprehensive application ability of students.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. and (4) an experimental box.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, a layered analog circuit experimental box comprises an experimental box, in which a power module, an instrument module, a dc power circuit module, an integrated power amplifier circuit module, a discrete power amplifier circuit module, a thyristor circuit module, a differential amplifier circuit module, an integrated operational amplifier circuit module, a discrete component amplifier circuit module, a field effect transistor circuit module, an expandable experimental region, a discrete component plugging region, a power line and a wire placing region are arranged, wherein the input and output ends of the above circuits are led to a PCB panel through a PCB board circuit to form a port capable of being plugged and unplugged quickly, and the input port is connected with the output port of a signal generator through a wire; the output port respectively measures or gives out alarm sound through the conducting wire, the measuring instrument and the loudspeaker phasor; the transmission of the intermediate signal is connected by a wire.
The power supply module provides working power supply for each circuit module, and the working voltage of the power supply module is 220V +/-10% and 50HZ alternating current.
The instrument module comprises a digital direct current voltmeter, a function signal generator and a digital frequency meter, wherein the digital direct current voltmeter is used for measuring direct current voltage between 0 and 30V; the function signal generator can provide an alternating current signal source with the frequency of 10Hz to 1MHz, and the amplitude can output square waves of 0 to 20V, triangular waves of 0 to 15V and sine waves of 0 to 10V in four steps; the digital frequency meter can measure the signal frequency of 0-300 KHz.
The direct current power supply circuit module is a direct current signal source and can provide two paths of direct current power supplies with two continuously adjustable levels of-0.5V- +0.5V, -5V- +5V for the experimental circuit; two-gear adjustable direct current power supplies of-5V to-12V and +5V to + 27V; and a fixed power supply of +/-5V and +/-12V is provided.
The power output has the functions of overcurrent protection and automatic recovery.
The experiment connecting jack adopts a locking type gold-plated jack and is fixed on the experiment board through welding.
The expansion experimental area comprises the assembly and debugging of a function signal generator, a temperature monitoring and control circuit and the design and debugging of the multimeter formed by operational amplifiers.
The discrete component patch area includes 50 connectors for the resistance-capacitance components and 3 connectors for the transistors.
The experimental box consists of a power supply module, an instrument module (a voltmeter, a function signal generator and a frequency meter), a direct-current power supply circuit module, an integrated power amplifier circuit module, a discrete power amplifier circuit module, a silicon controlled rectifier circuit module, a differential amplifier circuit module, an integrated operational amplifier circuit module, a discrete component amplifier circuit module, a field effect tube circuit module, a pluggable potentiometer area, a pluggable resistor area, a pluggable transistor area, a power line and a lead placing area; the input end and the output end of the circuit are led to the PCB panel through a PCB circuit to form a port capable of being plugged and unplugged quickly, and the input port is connected with the output port of the signal generator through a lead; the output port respectively measures or gives out alarm sound through the conducting wire and the measuring instrument or the loudspeaker phasor; the transmission of the intermediate signal is connected through a lead, the experimental box integrates each unit circuit, a digital direct current voltmeter, a function signal generator and a frequency meter, a required signal source can be provided for the experimental circuit without an external signal generator, and the voltmeter is connected in parallel with a corresponding device of each unit circuit module to measure voltage; the function signal generator provides square waves, triangular waves and sine waves as input signal sources for the unit circuit module; the frequency meter is used for measuring the frequency of the signal; the expandable experimental area can provide more learning space for excellent students and improve self-practice capability; when a circuit experiment is carried out, according to the experiment requirement, students can pertinently and regionally select which circuit modules in the experiment box should be used, and the circuit modules are connected with the power supply module through leads and then connected with corresponding output elements through leads; the difficulty of each modular arrangement of the experimental box is increased from a basic test verification experiment to an expansibility design experiment, the basic practice ability exercise of most students can be met, the comprehensive circuit design opportunity can be provided for more excellent students, the traditional fool type experiment process is broken away, the experimental box needs the students to design circuits by themselves, different device parameters can be selected, the difference of experiment data brought by different parameters is tried, the research and learning interests of the students are stimulated, and the theoretical learning knowledge is consolidated more deeply. Different circuits can be combined to cultivate the practical ability and comprehensive application ability of students.
Claims (8)
1. A hierarchical analog circuit experimental box comprises an experimental box and is characterized in that a power supply module, an instrument module, a direct-current power supply circuit module, an integrated power amplifier circuit module, a discrete power amplifier circuit module, a silicon controlled circuit module, a differential amplifier circuit module, an integrated operational amplifier circuit module, a discrete element amplifier circuit module, a field effect transistor circuit module, an expandable experimental area, a discrete element plugging area, a power line and a lead placing area are arranged in the experimental box, the input end and the output end of each circuit are led to a PCB panel through a PCB circuit to form a port capable of being plugged and unplugged quickly, and an input port is connected with an output port of a signal generator through a lead; the output port respectively measures or gives out alarm sound through the conducting wire, the measuring instrument and the loudspeaker phasor; the transmission of the intermediate signal is connected by a wire.
2. The hierarchical analog circuit experiment box of claim 1, wherein the power module provides operating power to each circuit module at 220V ± 10% and 50HZ ac.
3. The layered analog circuit experiment box of claim 2, wherein the instrumentation module comprises a digital dc voltmeter, a function signal generator, and a digital frequency meter, the digital dc voltmeter is used for measuring dc voltage between 0V and 30V; the function signal generator can provide an alternating current signal source with the frequency of 10Hz to 1MHz, and the amplitude can output square waves of 0 to 20V, triangular waves of 0 to 15V and sine waves of 0 to 10V in four steps; the digital frequency meter can measure the signal frequency of 0-300 KHz.
4. The layered analog circuit experimental box of claim 1, wherein the dc power circuit module is a dc signal source and can provide two-way-0.5V- +0.5V, -5V- +5V two-stage continuously adjustable dc power for the experimental circuit; two-gear adjustable direct current power supplies of-5V to-12V and +5V to + 27V; and a fixed power supply of +/-5V and +/-12V is provided.
5. The hierarchical analog circuit experiment box of claim 1, wherein the power outputs have overcurrent protection and automatic recovery functions.
6. The layered simulation circuit experiment box of claim 1, wherein the experiment connecting jack is a locking type gold-plated jack and is fixed on the experiment board by welding.
7. The hierarchical simulation circuit experiment box of claim 1, wherein the experimental extension area comprises assembling and debugging of a function signal generator, temperature monitoring and control circuits, and designing and debugging of the multimeter are composed of operational amplifiers.
8. The hierarchical analog circuit experimental box of claim 1, wherein the discrete component plugging region comprises 50 connectors of resistance-capacitance components and 3 connectors of triodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037278.5A CN110751888A (en) | 2019-10-29 | 2019-10-29 | Hierarchical analog circuit experimental box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911037278.5A CN110751888A (en) | 2019-10-29 | 2019-10-29 | Hierarchical analog circuit experimental box |
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| CN110751888A true CN110751888A (en) | 2020-02-04 |
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| CN201911037278.5A Pending CN110751888A (en) | 2019-10-29 | 2019-10-29 | Hierarchical analog circuit experimental box |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111583765A (en) * | 2020-05-28 | 2020-08-25 | 星酉(天津)智能科技有限公司 | Software and hardware interactive comprehensive experiment box and method based on CDIO measurement and control circuit |
| CN114999289A (en) * | 2022-06-21 | 2022-09-02 | 山东师范大学 | Modular electric experimental box with detachable expansion module |
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Patent Citations (8)
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| CN201072610Y (en) * | 2007-07-26 | 2008-06-11 | 浙江天煌科技实业有限公司 | Network type electronics synthetic experimental device |
| CN202042097U (en) * | 2011-02-23 | 2011-11-16 | 刘文山 | Electronic experiment box |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111583765A (en) * | 2020-05-28 | 2020-08-25 | 星酉(天津)智能科技有限公司 | Software and hardware interactive comprehensive experiment box and method based on CDIO measurement and control circuit |
| CN114999289A (en) * | 2022-06-21 | 2022-09-02 | 山东师范大学 | Modular electric experimental box with detachable expansion module |
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Application publication date: 20200204 |
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