CN209895629U - Experiment external member - Google Patents
Experiment external member Download PDFInfo
- Publication number
- CN209895629U CN209895629U CN201920165184.5U CN201920165184U CN209895629U CN 209895629 U CN209895629 U CN 209895629U CN 201920165184 U CN201920165184 U CN 201920165184U CN 209895629 U CN209895629 U CN 209895629U
- Authority
- CN
- China
- Prior art keywords
- power input
- interface
- power
- input end
- distance
- 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.)
- Active
Links
Images
Landscapes
- Structure Of Printed Boards (AREA)
Abstract
The utility model discloses an experiment external member. The utility model provides an experiment external member includes DC power supply, bread board and two at least independent experiment modules, and every independent experiment module all includes input interface, output interface, power source and common port, and wherein, input interface output interface, power source and common port all adopt the contact pin to be connected with the bread board electricity. The utility model provides an experiment external member passes through the contact pin and connects two at least independent experiment modules and bread board, makes things convenient for the plug of independent experiment module, makes the student can make up the connection according to the demand of oneself, powerful, convenient operation to improve the student and in the experiment class positive initiative and guarantee experimental facilities and student's safety as far as possible.
Description
Technical Field
The embodiment of the utility model provides a teaching experiment external member technique especially relates to an experiment external member is related to.
Background
With the rapid progress of modern science and technology and the high-speed development of economic level, higher requirements are also put forward on electronic circuit teaching, most of the existing electronic circuit teaching is mainly based on a teaching experiment box, and only after students understand related theories, simple connection is carried out to verify results.
However, the existing experimental box generally only needs to be simply connected, so that the students cannot fully understand the experimental theory, even the students only can mechanically remember to connect the point A with the point B to test the result of the point C, and the existing experimental box is difficult to design or modify parameters, so that the students cannot be fully exercised in the circuit building process.
How to effectively improve the positive initiative of students in experimental classes and ensure the safety of experimental equipment and students to become the problem to be solved urgently by the design of an electronic circuit teaching experiment suite while the students know the experiment perceptually as much as possible.
SUMMERY OF THE UTILITY MODEL
The utility model provides an experiment external member can improve the student and in the positive initiative on the experiment class and guarantee experimental facilities and student's safety as far as possible.
In a first aspect, an embodiment of the present invention provides an experiment kit, including:
the system comprises a direct current power supply, a bread board and at least two independent experiment modules;
each independent experiment module comprises an input interface, an output interface, a power interface and a public end, wherein the input interface, the output interface, the power interface and the public end are electrically connected with the bread board through pins.
Further, the input interface comprises a first input interface and a second input interface, and the output interface comprises a first output interface and a second output interface;
the first input interface and the first output interface are distributed along a first direction, and the second input interface and the second output interface are distributed along the first direction;
the first input interface and the second input interface are distributed along a second direction, and the first output interface and the second output interface are distributed along the second direction;
the second direction is perpendicular to the first direction.
Furthermore, the distance between the first input interface and the second input interface is fixed and equal to the distance between the first output interface and the second output interface;
the distance between the first input interface and the first output interface is equal to the distance between the second input interface and the second output interface and is equal to an integer multiple of 100 mils.
Further, the power interface includes a positive power input interface and a negative power input interface, and the common terminal includes a first ground terminal and a second ground terminal.
Further, the positive power input interface comprises a high voltage input interface and a low voltage input interface; the high-voltage input interface comprises a first power input end and a second power input end, the low-voltage input interface comprises a third power input end and a fourth power input end, and the negative power input interface comprises a fifth power input end and a sixth power input end.
Furthermore, the first power input end and the second power input end, the third power input end and the fourth power input end, the fifth power input end and the sixth power input end, and the first ground end and the second ground end are respectively distributed along the first direction;
the first power supply input end, the third power supply input end, the fifth power supply input end and the first grounding end are distributed along the second direction; the second power input end, the fourth power input end, the sixth power input end and the second grounding end are distributed along the second direction.
Furthermore, the distance between the first power input end and the third power input end is fixed and equal to the distance between the fifth power input end and the first ground end; the distance between the second power supply input end and the fourth power supply input end is fixed and is equal to the distance between the sixth power supply input end and the second grounding end;
the distance between the first power input end and the second power input end, the distance between the third power input end and the fourth power input end, the distance between the fifth power input end and the sixth power input end and the distance between the first grounding end and the second grounding end are equal to each other and equal to integral multiple of 100 mils.
Further, the direct current power supply includes: short circuit alarm module, at least two test hooks, at least two transition terminal and at least two earthing terminal.
Further, the dc power supply further includes:
at least one of a direct current voltage stabilization regulating unit, a liquid crystal display, a level locking switch and an expansion interface.
Further, the independent experiment module is any one of an instrumentation amplifier, a 455kHz ceramic oscillator, a proportional integrator, a half-wave detector, a Venturi oscillator, a crystal oscillator, a 555 oscillator, a low-pass filter, a high-pass filter, a nonlinear amplifier, a Si5351 frequency synthesizer, a buffer, a 455kHz intermediate frequency channel, a crystal oscillator, a frequency divider, a 50Hz trap and a phase shifter.
The utility model provides an experiment external member includes DC power supply, bread board and two at least independent experiment modules, and every independent experiment module all includes input interface, output interface, power source and common port, and wherein, input interface output interface, power source and common port all adopt the contact pin to be connected with the bread board electricity. The utility model provides an experiment external member passes through the contact pin and connects two at least independent experiment modules and bread board, makes things convenient for the plug of independent experiment module, makes the student can make up the connection according to the demand of oneself, powerful, convenient operation to improve the student and in the experiment class positive initiative and guarantee experimental facilities and student's safety as far as possible.
Drawings
Fig. 1 is a schematic structural diagram of an experimental kit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an independent experiment module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bread board according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another experimental kit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of an experiment kit provided by an embodiment of the present invention. Referring to fig. 1, the embodiment of the present invention provides an experiment kit 100 including a dc power supply 1, a bread board 11 and at least two independent experiment modules 2, wherein, fig. 1 includes two independent experiment modules 2 with the experiment kit 100, and two independent experiment modules 2 are inserted on the bread board 11 for example to draw, the experiment box 1 includes the bread board 11, each independent experiment module 2 all includes an input interface 21, an output interface 22, a power interface 23 and a common terminal 24, wherein, the input interface 21, the output interface 22, the power interface 23 and the common terminal 24 all adopt a pin to be electrically connected with the bread board 11.
Specifically, the experiment kit 100 includes a dc power supply 1 and at least two independent experiment modules 2, the bread board 11 is fixed on the experiment kit 100, the input interface 21, the output interface 22, the power interface 23 and the common terminal 24 included in each independent experiment module 2 are all electrically connected to the bread board 11 by using pins, and the size of the bread board 11 can be 160mm × 145 mm. A circuit can be built on the bread board 11 through the independent experiment module 2 according to an experiment principle diagram, and debugging and index testing are carried out. Illustratively, the bread board comprises jacks matched with the pins, and is a bearing plate for fixing circuit elements or electrically connecting the circuit elements in an electronic circuit welding experiment, the jacks of the bread board are connected with the independent experiment modules 2 through the pins, and the independent experiment modules 2 can be plugged in or pulled out as required, so that the circuit assembling time is saved. The bread board 11 may be composed of two types, a narrow bread board and a wide bread board, respectively, the narrow bread board may be disposed at the upper and lower sides of the bread board 11, and the wide bread board may be disposed at the middle of the bread board 11. The size of the insertion holes of the bread board 11 is set corresponding to the size of the independent experiment module 2. The bread board 11 is provided with jacks for facilitating the electrical connection of the pins on the independent experiment module 2 with the bread board 11.
The utility model provides an experiment external member includes DC power supply, bread board and two at least independent experiment modules, and every independent experiment module all includes input interface, output interface, power source and common port, and wherein, input interface output interface, power source and common port all adopt the contact pin to be connected with the bread board electricity. The utility model provides an experiment external member passes through the contact pin and connects two at least independent experiment modules and bread board, makes things convenient for the plug of independent experiment module, makes the student can make up the connection according to the demand of oneself, powerful, convenient operation to improve the student and in the experiment class positive initiative and guarantee experimental facilities and student's safety as far as possible.
Optionally, fig. 2 is a schematic structural diagram of an independent experiment module provided in an embodiment of the present invention. Referring to fig. 2, the input interface 21 of the independent experiment module 2 includes a first input interface C1 and a second input interface C2, the output interface 22 includes a first output interface D1 and a second output interface D2, the first input interface C1 and the first output interface D1 are distributed along a first direction N1, the second input interface C2 and the second output interface D2 are distributed along the first direction N1, the first input interface C1 and the second input interface C2 are distributed along a second direction N2, the first output interface D1 and the second output interface D2 are distributed along the second direction N2, and the second direction N2 is perpendicular to the first direction N1.
Specifically, input interface 21 and output interface 22 of every independent experiment module 2 can set up a plurality ofly, output interface 21 can correspond the setting with input interface 22's quantity, can set up input interface 21 and be located the left side of every independent experiment module 2, can set up output interface 22 and be located the right side of every independent experiment module 2, in order to make things convenient for each independent experiment module 2 to peg graft in proper order on bread board 11 along first direction N1, output interface 22 of every independent experiment module 2 is connected with the input interface 21 electricity of every adjacent independent experiment module 2. Every independent experiment module 2 sets up a plurality of input interface 21 and output interface 22, conveniently sets up multiple experimental scheme, realizes the multiplexing of independent experiment module 2, and a plurality of input interface 21 and output interface 22 can also increase every independent experiment module 2's life simultaneously.
Optionally, the distance between the first input interface C1 and the second input interface C2 is fixed and equal to the distance between the first output interface D1 and the second output interface D2, and the distance between the first input interface C1 and the first output interface D1 is equal to the distance between the second input interface C2 and the second output interface D2 and equal to an integer multiple of 100 mils.
Specifically, fig. 3 is a schematic structural diagram of a bread board according to an embodiment of the present invention. Referring to fig. 3, the bread board 11 may include a narrow bread board 111 and a wide bread board 112, the wide bread board 112 disposed in the middle of the bread board 11 may have five rows of insertion holes 110 on the upper and lower sides, the middle has a separation groove with a distance D1 about equal to 7.5 mm, the 5 insertion holes 110 in each row are connected with each other on the upper and lower sides, the left and right sides are not connected with each other, the insertion holes 110 on the two sides of the separation groove are also not connected with each other, wherein the separation groove in the middle facilitates the insertion of an integrated circuit. The distance between the first input interface C1 and the second input interface C2 is fixed and equal to the distance between the first output interface D1 and the second output interface D2, which is equal to the vertical distance between the corresponding jacks of the five rows of jacks respectively arranged above and below the wide bread board in the middle of the bread board 11. The distance between the left and right of the corresponding jack of the five rows of jacks arranged on the wide bread board in the middle of the bread board 11 is 100 mils, because the functions of the independent experiment modules 2 are different, the number and the layout of the circuit components included in the independent experiment modules 2 are also different, and because the width of the bread board 11 in the second direction N2 is fixed, the added circuit components can increase the width in the first direction by an integral multiple of 100 mils, so the distance between the first input interface C1 and the first output interface D1 is equal to the distance between the second input interface C2 and the second output interface D2, and the distances between the left and right of the corresponding jack of the five rows of jacks arranged on the wide bread board in the middle of the bread board 11 can be integral multiples of 100 mils.
Optionally, the power interface 23 includes a positive power input interface and a negative power input interface, and the common terminal 24 includes a first ground terminal F1 and a second ground terminal F2.
Specifically, the common terminal 24 comprises a plurality of grounding terminals, which facilitates reliable grounding in the experiment process and ensures the safety of the experiment box and the independent experiment module 2.
Optionally, the positive power input interface comprises a high voltage input interface and a low voltage input interface, wherein the high voltage input interface comprises a first power input terminal a1 and a second power input terminal a2, the low voltage input interface comprises a third power input terminal B1 and a fourth power input terminal B2, and the negative power input interface comprises a fifth power input terminal E1 and a sixth power input terminal E2.
Specifically, according to the requirement of each independent experiment module 2, the high voltage input interface can input +12V voltage, the low voltage input interface can input +5V voltage, the negative power input interface can input-12V or-5V voltage, that is, the first power input end a1 and the second power input end a2 can be set to input +12V voltage, the third power input end B1 and the fourth power input end B2 can be set to input +5V voltage, and the fifth power input end E1 and the sixth power input end E2 can be set to input-12V or-5V voltage. Therefore, the power supply requirements of different components on each independent experiment module 2 are met, the high-voltage input interface, the low-voltage input interface and the negative power supply input interface of the power supply end of the power supply are clearly distinguished, the voltage is sequentially reduced along the second direction N2, and the risk that the components are burnt out due to the fact that the power supply is connected in a wrong mode in the using process is reduced as far as possible.
Optionally, the first power input terminal a1 and the second power input terminal a2, the third power input terminal B1 and the fourth power input terminal B2, the fifth power input terminal E1 and the sixth power input terminal E2, and the first ground terminal F1 and the second ground terminal F2 are distributed along the first direction N1, the first power input terminal a1, the third power input terminal B1, the fifth power input terminal E1 and the first ground terminal F1 are distributed along the second direction N2, and the second power input terminal a2, the fourth power input terminal B2, the sixth power input terminal E2 and the second ground terminal F2 are distributed along the second direction N2.
Alternatively, the distance between the first power input terminal a1 and the third power input terminal B1 is fixed and equal to the distance between the fifth power input terminal E1 and the first ground terminal F1, the distance between the second power input terminal a2 and the fourth power input terminal B2 is fixed and equal to the distance between the sixth power input terminal E2 and the second ground terminal F2, and the distance between the first power input terminal a1 and the second power input terminal a2, the distance between the third power input terminal B1 and the fourth power input terminal B2, the distance between the fifth power input terminal E1 and the sixth power input terminal E2, and the distance between the first ground terminal F1 and the second ground terminal F2 are equal and equal to integer multiples of 100 mils.
Specifically, the breadboard strips disposed on the upper and lower sides of the breadboard 11 may be composed of two rows of insertion holes, the two rows of insertion holes being connected left and right without being communicated with each other up and down, and used as power connection buses, the first power input terminal a1 and the second power input terminal a2, the third power input terminal B1 and the fourth power input terminal B2 respectively correspond to the insertion holes of the breadboard strips on the upper side, and the fifth power input terminal E1 and the sixth power input terminal E2 and the first ground terminal F1 and the second ground terminal F2 respectively correspond to the insertion holes of the breadboard strips on the lower side. Two rows of insertion holes of the upper side slat bread board may be arranged along the second direction N2, a plurality of groups of insertion holes of 5 insertion holes may be arranged along the first direction N1, and the width of each group of insertion holes may be set to 100 mils. The distance between the first power input end A1 and the third power input end B1 is equal to the distance between the second power input end A2 and the fourth power input end B2, and two rows of jacks are arranged along the second direction N2 corresponding to the jacks of the upper side narrow bread board, namely the jacks are fixed values corresponding to the bread board. The distance between the first power input end A1 and the second power input end A2 is equal to the distance between the third power input end B1 and the fourth power input end B2, and the distances corresponding to the multiple groups of jacks arranged along the first direction N1 of the jacks of the upper side narrow bread board are equal to integral multiple of 100 mils.
The lower narrow bread board and the upper narrow bread board can be arranged to be of the same structure, that is, two rows of insertion holes are arranged along the second direction N2 in the insertion holes of the lower narrow bread board, multiple groups of insertion holes with 5 insertion holes as one group are arranged along the first direction N1 in the insertion holes of the lower narrow bread board, and the width of each group of insertion holes can be set to be 100 mils. The distance between the fifth power input terminal E1 and the first ground terminal F1 is equal to the distance between the sixth power input terminal E2 and the second ground terminal F2, and corresponds to two rows of insertion holes of the lower narrow bread board along the second direction N2, which is a fixed value corresponding to the bread board. The distance between the fifth power input terminal E1 and the sixth power input terminal E2 is equal to the distance between the first ground terminal F1 and the second ground terminal F2, and is equal to an integral multiple of 100 mils corresponding to the plurality of sets of insertion holes of the lower narrow bread board arranged along the first direction N1.
Optionally, the dc power supply comprises: at least one of a direct current voltage stabilization regulating unit, a liquid crystal display, a level locking switch and an expansion interface.
Specifically, the direct current voltage stabilization regulating unit comprises 4 paths of +5V/1A, +12V/0.5A, -12V/0.5A and +9V/50mA, wherein the +9V can supply power for the digital multimeter, and the direct current power supply has a short-circuit protection function.
Alternatively, the independent experimental block 2 is any one of an instrumentation amplifier, a 455kHz ceramic oscillator, a proportional integrator, a half-wave detector, a venturi oscillator, a crystal oscillator, a 555 oscillator, a low-pass filter, a high-pass filter, a non-linear amplifier, a Si5351 frequency synthesizer, a buffer, a 455kHz intermediate frequency channel, a crystal oscillator and frequency divider, a 50Hz trap and a phase shifter.
Specifically, different independent experiment modules 2 are selected to be combined, different experiment functions can be realized, for example, a venturi oscillator can be selected to generate a sine waveform of x sin θ, a venturi oscillator and a phase shifter can be selected to generate a waveform of y cos θ, and then a cardioid waveform experiment is synthesized according to a cardioid equation.
Optionally, fig. 4 is a schematic structural diagram of another experiment kit provided in the embodiment of the present invention. Referring to fig. 4, the dc power supply 1 of the experimental kit 100 further includes a short-circuit alarm module 3, and optionally, the dc power supply 1 further includes at least two test hooks, at least two transition terminals, and at least two ground terminals, and it should be noted that fig. 4 does not show the test hooks, the transition terminals, and the ground terminals.
Specifically, different function experiments can be realized to the different combinations of independent experiment module 2 of experiment external member 100, the experiment external member is used for the student experiment more, therefore, there is the condition of negligence or short circuit in student's experimentation unavoidably, short circuit alarm module 3 sets up and to have any operation short circuit just to report to the police on DC power supply 1 can in student's experimentation, the security of student's experiment has been improved, reduce the damage of experiment external member 100 simultaneously, improve the practicality of experiment external member 100, increase student's manual ability, and when directly perceived cognition, reduce the fault rate of experiment external member 100 as far as possible, make things convenient for big students to carry out the experiment repeatedly in batches, improve the life of experiment external member. Illustratively, the short circuit alarm module 3 may alarm through a buzzer.
This experiment external member 100's DC power supply 1 still includes two at least test hooks, two at least transition terminals and two at least earthing terminals, makes things convenient for the measurement of carrying on intermediate variable and parameter in the experimentation, strengthens the scientific research of experiment external member 100 and the practicality of course teaching, provides convenient condition for the student explores the circuit experiment.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. An assay kit, comprising:
the system comprises a direct current power supply, a bread board and at least two independent experiment modules;
each independent experiment module comprises an input interface, an output interface, a power interface and a public end, wherein the input interface, the output interface, the power interface and the public end are electrically connected with the bread board through pins.
2. The assay kit of claim 1, wherein the input interface comprises a first input interface and a second input interface, and the output interface comprises a first output interface and a second output interface;
the first input interface and the first output interface are distributed along a first direction, and the second input interface and the second output interface are distributed along the first direction;
the first input interface and the second input interface are distributed along a second direction, and the first output interface and the second output interface are distributed along the second direction;
the second direction is perpendicular to the first direction.
3. The assay kit of claim 2,
the distance between the first input interface and the second input interface is fixed and is equal to the distance between the first output interface and the second output interface;
the distance between the first input interface and the first output interface is equal to the distance between the second input interface and the second output interface and is equal to an integer multiple of 100 mils.
4. The assay kit of claim 2, wherein the power interface comprises a positive power input interface and a negative power input interface, and the common terminal comprises a first ground terminal and a second ground terminal.
5. The experimental kit of claim 4, wherein the positive power input interface comprises a high voltage input interface and a low voltage input interface; the high-voltage input interface comprises a first power input end and a second power input end, the low-voltage input interface comprises a third power input end and a fourth power input end, and the negative power input interface comprises a fifth power input end and a sixth power input end.
6. The assay kit of claim 5,
the first power input end and the second power input end, the third power input end and the fourth power input end, the fifth power input end and the sixth power input end, and the first ground end and the second ground end are respectively distributed along the first direction;
the first power input end, the third power input end, the fifth power input end and the first ground end are distributed along the second direction; the second power input terminal, the fourth power input terminal, the sixth power input terminal, and the second ground terminal are distributed along the second direction.
7. The assay kit of claim 6,
the distance between the first power input end and the third power input end is fixed and equal to the distance between the fifth power input end and the first ground end; the distance between the second power input end and the fourth power input end is fixed and equal to the distance between the sixth power input end and the second ground end;
the distance between the first power input terminal and the second power input terminal, the distance between the third power input terminal and the fourth power input terminal, the distance between the fifth power input terminal and the sixth power input terminal, and the distance between the first ground terminal and the second ground terminal are equal to an integer multiple of 100 mils.
8. The assay kit of claim 1, wherein the dc power supply comprises: short circuit alarm module, at least two test hooks, at least two transition terminal and at least two earthing terminal.
9. The assay kit of claim 1, wherein the dc power supply further comprises: at least one of a direct current voltage stabilization regulating unit, a liquid crystal display, a level locking switch and an expansion interface.
10. The experimental kit of claim 1, wherein said self-contained experimental module is any one of an instrumentation amplifier, 455kHz ceramic oscillator, proportional integrator, half-wave detector, venturi oscillator, crystal oscillator, 555 oscillator, low pass filter, high pass filter, non-linear amplifier, Si5351 frequency synthesizer, buffer, 455kHz intermediate frequency channel, crystal oscillator and frequency divider, 50Hz trap and phase shifter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920165184.5U CN209895629U (en) | 2019-01-30 | 2019-01-30 | Experiment external member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920165184.5U CN209895629U (en) | 2019-01-30 | 2019-01-30 | Experiment external member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209895629U true CN209895629U (en) | 2020-01-03 |
Family
ID=69016193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920165184.5U Active CN209895629U (en) | 2019-01-30 | 2019-01-30 | Experiment external member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209895629U (en) |
-
2019
- 2019-01-30 CN CN201920165184.5U patent/CN209895629U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105974348B (en) | Low-voltage current mutual inductor comprehensive detection system and its method | |
| DE112013002300T5 (en) | Relay with integrated current sensor | |
| KR20110062333A (en) | Multi function complex connection type circuit test device | |
| CN209895629U (en) | Experiment external member | |
| CN106997710A (en) | A kind of building block type electronic experiment teaching aid | |
| CN113077676A (en) | Electric energy metering cabinet signal input control system and electric energy metering cabinet wiring teaching device | |
| JP6502289B2 (en) | Connection confirmation tester and connection confirmation test method | |
| RU53055U1 (en) | ELECTRONIC LABORATORY EQUIPMENT KIT | |
| US3548261A (en) | Arrangement for constructing electrical circuits by means of board mounted connector plates | |
| CN110751888A (en) | Hierarchical analog circuit experimental box | |
| CN105391117A (en) | False battery apparatus and false battery system | |
| CN210073091U (en) | Experiment platform | |
| CN110196347A (en) | A kind of electrical energy measurement joint connecting terminal block | |
| KR102171386B1 (en) | Relay Wiring Auto Test Device | |
| CN211578194U (en) | Vehicle lamp circuit connection simulation device | |
| CN210347884U (en) | DC power supply simulation grounding test device | |
| CN209248002U (en) | A kind of LED light strip ageing tester | |
| CN202042097U (en) | Electronic experiment box | |
| CN112485701A (en) | Universal switching adapter plate for testing DC/DC power supply module and testing method thereof | |
| CN206021731U (en) | A kind of plug-in type digital circuit demonstration board | |
| CN217388525U (en) | Alternating current control box for reactive power test equipment | |
| CN211654067U (en) | Modular teaching training device for electrical secondary circuit | |
| CN201038087Y (en) | Residual current operated protector dedicated switching device | |
| CN215005798U (en) | Multiple power supply detection device | |
| CN103529374A (en) | Simple controlled silicon detection board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |