CN209708440U - A kind of universal expansion module of building block type high-frequency circuit experiment box - Google Patents

Abstract

The utility model provides a kind of universal expansion module of building block type high-frequency circuit experiment box, including general expansion module, building block type high-frequency circuit experiment box and the circuit module being arranged in the building block type high-frequency circuit experiment box；It is realized and is electrically connected by connector between general expansion module and building block type high-frequency Experiment of Electrical Circuits box body；Circuit module includes: module one, module two, module three, module four, module five, module six, module seven, module eight and module nine；General expansion module and the circuit module in building block type high-frequency circuit experiment box are in the same size, can be replaced by student's circuit module designed in general expansion module the circuit module one being arranged in the building block type high-frequency circuit experiment box to module nine any one of or several modules.The technical solution of the utility model solves the problems, such as that colleges and universities can not carry out or can not carry out very well high-frequency circuit experiment designed.

Description

A kind of universal expansion module of building block type high-frequency circuit experiment box

Technical field

The utility model relates to teaching aids, technical field of experiment equipment, specifically, more particularly to a kind of building block system height The universal expansion module of frequency circuit experimental box.

Background technique

High-frequency circuit experimental box is the experiment porch that most domestic institution of higher learning carry out High-Frenquency Electronic Circuit experiment, high frequency Circuit experiment box nearly all uses modularized design, is tested by the plug and combination development element circuit of building block system or comprehensive Experiment, but be all replication experiment, student only needs simply to connect can verify learned high frequency basic theories by testing, The interest of student's Active Learning and the enthusiasm started can not be excited in this way, and it is even more impossible to reach the training student ability of practice, research With the experimental teaching target of innovation ability.

Carry out the trend that experiment designed is all courses of electrical type.But colleges and universities test just to carry out high-frequency design Need to purchase or develop new high-frequency design experiment porch, cost input is often also relatively high, while needing to scrap old set It is standby, so not only not environmentally but also be a kind of resource waste.

In addition, only having the high-frequency circuit experimental box of few part of the manufacturer that can carry out experiment designed, Ta Menkai on the market The PCB circuit board for putting part of module in experimental box provides support circuit component, what student can only be specified in fixed position welding Component, but the fixed circuit structure of this kind of mode PCB can not be changed, and design is restricted, may only adjustment member circuit components Parameter, mainly take exercise or student welds the ability of debugging rather than the ability of circuit design and realization, thus is also unfavorable for Improve research, exploration and the innovation ability of student.

Also there are Some Universities to open using the cheaper bread board of cost to build by the way of high frequency unit circuit certainly Open up experiment designed, but because high-frequency circuit by distribution parameter is influenced greatly and the jack stability of bread board deficiency, to cause It is big to carry out difficulty, the low interference of reliability is big, and efficiency is extremely low.If designed by bread board amplitude modulation transmitting, amplitude modulation receive, The comprehensive system such as FM transmission, FM reception just becomes more difficult.It is thus used by colleges and universities also fewer.

Utility model content

The technical issues of can not being carried out according to colleges and universities set forth above or high-frequency circuit experiment designed can not be carried out very well, And provide a kind of universal expansion module of building block type high-frequency circuit experiment box.The general expansion module of the utility model is low in cost again Old resource can be made full use of, can also be used alone.

The technological means that the utility model uses is as follows:

A kind of universal expansion module of building block type high-frequency circuit experiment box, including general expansion module, building block type high-frequency electricity Road experimental box and the circuit module being arranged in the building block type high-frequency circuit experiment box；The general expansion module and building blocks Formula high-frequency circuit tests and realizes electric connection by connector between box body；

The circuit module includes: module one, module two, module three, module four, module five, module six, module seven, mould Block eight and module nine；

The general expansion module includes that double-sided printed-circuit board, the circuit being arranged on the double-sided printed-circuit board are set Count area and support isolation post holes；The circuit design area includes:

The existing experimental box power input area of circuit design area left and right ends is set；

The signal input area of circuit design area lower left is set；

The signal output area of circuit design area lower right is set；

The external power supply input area of the signal input area and signal output area middle position is set；

Power access circuit two on the left of the signal input area is set；

Power access circuit one on the right side of the signal output area is set；

The common power supply area of coverage on the upside of the circuit design area is set；

It is arranged on the downside of the circuit design area and uses very much the power supply area of coverage；

For student when designing circuit, input signal is first coupled to signal input area, then is connected to circuit by signal input area Zone position is designed, is transmitted to signal output area by the circuit output signal in circuit design area.

Further, the power access circuit one includes self-lock switch S1, filter circuit one and power supply indicator one； The power access circuit two includes self-lock switch S2, filter circuit two and power supply indicator two；The existing experimental box electricity The power supply of source input area is connected by self-lock switch with filter circuit and power supply indicator, is provided and product for general expansion module The identical power supply of wooden formula high-frequency circuit experimental box；The external power supply input area is also electrically connected with power access circuit, described The plant-grid connection in existing experimental box power input area when self-lock switch is depressed, by external power supply input area when self-lock switch is not depressed The power supply power supply of access.

Further, the external power supply input area include positive supply (VCC) input jack, negative supply (VEE) input insert Hole, (VCC2) input jack of power supply two and earth jack.

Further, the general expansion module can only select to be inputted by existing experimental box power input area and external power supply One of area mode is powered, and modular power source on-state is expanded in the power supply indicator instruction.

Further, the common power supply area of coverage includes two channels: the channel VCC and the channel GND one；It is described non-common The power supply area of coverage includes three channels: the channel VEE, the channel VCC2, the channel GND two；The channel VCC, the channel GND one, VEE are logical Road, the channel VCC2 and the channel GND two are all a line via holes interconnected, and voltage is respectively VCC, GND, VEE, VCC2 and GND； Common power supply after the power access circuit one or two and the common power supply area of coverage are electrically connected, very with power supply with it is non- The common power supply area of coverage is electrically connected；

Further, in the channel VCC and the channel GND one of the common power supply area of coverage, every 3 via holes are one group, group Be divided into 2.54mm between interior via hole, between every group of via hole between be divided into 7.62mm, reserve the space of silk-screen prompt letter；Described Very in the channel VEE of the power supply area of coverage, the channel VCC2 and the channel GND two between via hole and via hole between be divided into 2.54mm, two Side reserves the space of silk-screen prompt letter.

Further, the circuit design area further include: via hole matrix A, via hole matrix B and via hole Matrix C, the via hole Matrix A and via hole matrix B be the hole matrix of crossing of M1 row * N1 column, and via hole Matrix C is that M2 row * N2 column cross hole matrix, wherein M1, N1, M2, N2 are positive integer；

Further, mutually insulated between the via hole matrix A, via hole matrix B and via hole Matrix C, it is each to cross hole matrix Middle each column via hole mutual conduction, mutually insulated between every row via hole.

Further, column alignment above and below the via hole of the via hole matrix A, via hole matrix B and via hole Matrix C, each mistake In hole matrix, between every row via hole and via hole between be divided into 2.54mm, between each column via hole and via hole between be divided into 2.54mm, the mistake 3.81mm is divided between hole matrix A and via hole matrix B, between the via hole matrix B and via hole Matrix C between be divided into 7.62mm；

Further, the signal input area further includes input module and input GND module；It also wraps the signal output area Include output module and output GND module；The input module, input GND module, output module and output GND module are also all Cross hole matrix, calibrating terminal and jack three parts, the three parts including M3 row * N3 column are sequentially connected, and cross mistake in hole matrix Hole is connect with via hole.

Further, the general expansion module and the circuit module in building block type high-frequency circuit experiment box are in the same size, It can be arranged to replace in the building block type high-frequency Experiment of Electrical Circuits by student's circuit module designed in general expansion module Circuit module one in case arrives any one or several modules between module nine.

Compared with the prior art, the utility model has the advantage that

1, on the basis of being multiplexed old resource, using the general expansion module of the building block type high-frequency circuit experiment box of low cost The experimental box that can only carry out replication experiment can be just set to become to carry out the experiment porch of compostive design experiment, it is both environmentally friendly It is again practical.Not only experimental box power supply, which can be used, makes designed module and existing module common-battery source improve stability altogether, but also can It (is supplied to use external power supply power supply that stand-alone development is facilitated to verify or do not depend on to use with experimental box and did not purchase experimental box School's use).

2, in general expansion module, according to the technical requirement of modules, student voluntarily selecting circuit structure and Implementation method designs and produces each unit circuit module, replaces corresponding module in experimental box, with other existing module-cascades at receipts Letter machine or sender verify operational effect of the module of student's design in engineering system.Under design objective restriction, student The circuit diagram on book cannot be indiscriminately imitated, needs to consider performance, selects which kind of circuit structure, design parameter, with front stage module How to avoid interfering each other when cascade, how the high circuit of design stability, substantially increase in this way students'circuit design with The ability that circuit is realized.Meanwhile existing experimental box just becomes verifying bench, each unit circuit module can be with stand-alone development, individually It examines, a student designs multiple modules or multiple students respectively design a module and are finally cascaded into comprehensive system, and joint is adjusted Examination solves system level issues, the multiplication of student's sense of accomplishment.Colleges and universities can be supported to carry out different class hour numbers, various forms of experiments are real Trample class (such as: curriculum experiment, Course Exercise, more subjects fusion comprehensive design).

3, general expansion module uses transverse and longitudinal structure, meets the construction of high-frequency circuit.Three sections of longitudinal conduction lateral insulation Clearance-type crosses hole arrangement, suitable for various direct insertion components (such as: chip, triode, week etc.), surrounding has again at any time may be used With the power supply and ground of access, two-sided paving copper facilitates student flexible topology, reduces wiring difficulty, reduce conducting wire welding quantity and Length reduces welding difficulty, substantially increases circuit stability and conventional efficient.Can be by components' placement in front, conducting wire draws Overleaf, circuit structure is relatively sharp, beautiful for the welding such as foot.

4, convenient for test, the convenient cascade with other modules supports insulated column side for input/output test terminal and instrument connection Just student welds, and it is clear that general expansion plate functional block divides, and student is facilitated to use.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is done simply to introduce, it should be apparent that, the accompanying drawings in the following description is Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is that the general expansion module of the utility model building block type high-frequency circuit experiment box and the cooperation of building block system experimental box make Schematic diagram.

Fig. 2 is the structural schematic diagram of the general expansion module of the utility model building block type high-frequency circuit experiment box.

Fig. 3 is the circuit diagram of the utility model power access circuit one.

Fig. 4 is the circuit diagram of the utility model power access circuit two.

In figure: 1, general expansion module；2, building block type high-frequency circuit experiment box；3, module one；4, module two；5, module Three；6, module four；7, module five；8, module six；9, module seven；10, module eight；11, module nine；101, power supply covering is commonly used Area；102, the channel VCC；103, the channel GND one；104, via hole matrix A；105, via hole matrix B；106, via hole Matrix C；107, mistake Hole；108, existing experimental box power input area；109, power access circuit two；110, power access circuit one；111, self-locking to open Close S2；112, self-lock switch S1；113, signal input area；114, the power supply area of coverage is used very much；115, external power supply input area； 116, signal output area；117, input module；118, GND module；119, output module；120, hole matrix is crossed；121, test lead Son；122, jack；123, the channel VEE；124, the channel VCC2；125, the channel GND two；126, positive supply (VCC) input jack； 127, negative supply (VEE) input jack；128, power supply two (VCC2) input jack；129, earth jack；130, insulated column is supported Hole.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is only the utility model a part of the embodiment, instead of all the embodiments.Below at least one example The description only actually of property embodiment be it is illustrative, never as to the utility model and its application or any limit used System.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the utility model.As used herein, unless the context clearly indicates otherwise, otherwise singular Form be also intended to include plural form, additionally, it should be understood that, when in the present specification use term "comprising" and/or When " comprising ", existing characteristics, step, operation, device, component and/or their combination are indicated.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be clear that for ease of description, each shown in attached drawing The size of a part is not to draw according to actual proportionate relationship.Skill known for person of ordinary skill in the relevant Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding Weigh part of specification.In shown here and discussion all examples, example should be construed as merely by appointing to occurrence Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with In attached drawing afterwards do not need that it is further discussed.

In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because This should not be understood as the limitation to scope of protection of the utility model: the noun of locality " inside and outside " refers to the wheel relative to each component itself Wide is inside and outside.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this The limitation of utility model protection range.

As shown in Figure 1, the utility model provides a kind of universal expansion module of building block type high-frequency circuit experiment box, including General expansion module 1, building block type high-frequency circuit experiment box 2 and the circuit being arranged in the building block type high-frequency circuit experiment box Module；It is realized and is electrically connected by connector between the general expansion module 1 and 2 cabinet of building block type high-frequency circuit experiment box； The circuit module includes: module 1, module 24, module 35, module 46, module 57, module 68, module 79, module 8 10 and module 9 11；The general expansion module 1 and the circuit module in building block type high-frequency circuit experiment box 2 are in the same size, The circuit module being arranged in the building block type high-frequency circuit experiment box 2 can be determined replacement module 1 to module nine by student Any one between 11 or several modules.

As shown in Fig. 2, general expansion module 1 includes double-sided printed-circuit board, is arranged on the double-sided printed-circuit board Circuit design area and support isolation post holes 130；Support isolation post holes 130 is inserted into insulated column convenient for student and supports circuit board side Just welding circuit.The aperture of support isolation post holes 130 is 3.3mm (130mil).The circuit design area includes: to be arranged described The existing experimental box power input area 108 of circuit design area left and right ends；Existing experimental box power input area 108 passes through connector The power supply of existing experimental box is introduced, the power supply that general high-frequency circuit experimental box provides is 1 to 3 kinds.External power supply input area 115 Including positive supply (VCC) input jack 126, negative supply (VEE) input jack 127, power supply two (VCC2) input jack 128 and connect Ground jack 129.External power supply input area 115 provides several required direct currents by external equipment when module is used alone for expanding Source.Expand module can only select by one of existing experimental box power input area 108 and external power supply input area 115 mode Lai Power supply.The signal input area 113 of circuit design area lower left is set；It is arranged in circuit design area lower right Signal output area 116；The external power supply input in 116 middle position of the signal input area 113 and signal output area is set Area 115；Positive supply (VCC) input jack 126, negative supply (VEE) input jack 127, power supply two of external power supply input area 115 (VCC2) jack 122 of input jack 128, earth jack 129 and signal input signal output area all uses A33-K2 type.Via hole 107 apertures are 0.762mm (30mil).It is suitable for almost the various common straight cutting components of layout.Setting is inputted in the signal The power access circuit 2 109 in 113 left side of area；The power access circuit 1 on 116 right side of signal output area is set； The common power supply area of coverage 101 on the upside of the circuit design area is set；It is arranged in non-common on the downside of the circuit design area The power supply area of coverage 114；The common power supply area of coverage 101 includes two channels: the channel VCC 102 and the channel GND 1, commonly uses power supply In the channel VCC 102 and the channel GND 1 of the area of coverage 101, every 3 via holes 107 are one group, organize and are spaced between interior via hole 107 For 2.54mm (100mil), between every group of via hole 107 between be divided into 7.62mm (300mil), reserve silk-screen prompt letter (VCC, GND space), student design simple and clear when circuit connection power supply.It include very three channels: VEE with the power supply area of coverage 114 Channel 123, the channel VCC2 124, the channel GND 2 125.Use very much the channel VEE 123, the channel VCC2 124 of the power supply area of coverage 114 And in the channel GND 2 125 between via hole and via hole between be divided into 2.54mm (100mil), two sides reserve silk-screen prompt letter (VEE, VCC2, GND) space, student design circuit connection power supply when it is simple and clear.It is filtered by power access circuit 1 VCC is connected to the channel VCC 102, the channel VEE 123 is connected to by the filtered VEE of power access circuit 1, by power supply The access filtered VCC2 of circuit 2 109 is connected to the channel VCC2 124.According to the high-frequency circuit feature power supply that frequency of use is high The top in circuit design area is arranged in (channel VCC 102 and the channel GND 1), by the low power supply of the frequency of use (channel VEE 123,125) channel VCC2 124 and the channel GND 2 are placed in the lower section in circuit design area, make each via hole in circuit design area Can easily with power supply and connect, reduce using conducting wire and reduce conductor length, thus reduce interference improve circuit reliability. Wherein the channel VCC 102, the channel GND 1, the channel VEE 123, the channel VCC2 124 and the channel GND 2 125 are all that a line is mutual The via hole of connection.

For student when designing circuit, input signal is first coupled to signal input area 113, then is connected by signal input area 113 To circuit design zone position, it is transmitted to signal output area 116 by the circuit output signal in circuit design area, input and output are clear It is illustrated.Signal input area 113 includes input module 117 and GND module 118.Signal output area 116 includes 119 He of output module GND module 118.Input module 117, GND module 118 and output module 119 all separately include the via hole square of M3 row * N3 column Battle array 120,122 three parts of calibrating terminal 121 and jack, this three parts is connected to each other, and crosses in hole matrix 120 via hole and via hole all It is connected.M3 is 3, N3 4.Circuit design area further includes via hole matrix A 104, via hole matrix B 105, via hole Matrix C 106.It crosses About 107 column alignment of via hole in hole matrix A 104, via hole matrix B 105 and via hole Matrix C 106 these three matrixes, makes member Device layout and welding become beautiful and tidy.In each matrix, between every row via hole 107 and via hole 107 between be divided into 2.54mm (100mil), between each column via hole 107 and via hole 107 between be divided into 2.54mm (100mil).Via hole matrix A 104 and excessively hole matrix 3.81mm (150mil) is divided between B 105, i.e., default a line via hole.Between via hole matrix B 105 and via hole Matrix C 106 Between be divided into 7.62mm (300mil), i.e., default two rows via hole.Facilitate the components such as chip in via hole matrix B 105 and crosses hole matrix It is laid out between C 106.Via hole matrix A 104 and via hole matrix B 105 all cross hole matrix, via hole square for M1 row * N1 column Battle array C 106 is the matrix of M2 row * N2 column, and wherein M1, N1, M2, N2 are positive integer.Mutually insulated between hole matrix is crossed, each Cross each column via hole mutual conduction in hole matrix, mutually insulated between every row via hole.Via hole matrix line number M1, M2 is all 5, N 50. When the circuit design area of this mode carries out circuit design, the usage quantity of conducting wire can be greatly reduced, reduce student's welding Complexity and debugging difficulty, improve conventional efficient.

As shown in figure 3, power access circuit 1, by the positive supply VCC from existing experimental box power input area 108 It is coupled on self-lock switch S1 112 with negative supply VEE, then is filtered respectively by RC；The positive electricity of external power supply input area 115 Source (VCC) input jack 126 and negative supply (VEE) input jack 127 are also filtered with the RC of positive supply VCC and negative supply VEE respectively Wave circuit is connected.It is electric if positive supply (VCC) input jack 126 has accessed power supply when self-lock switch S1 112 disconnects Source indicator light DS1 is lighted, and power supply indicator DS2 is lighted if negative supply (VEE) input jack 127 has accessed power supply, is used to It indicates to expand the state that module is powered by external power supply.It is inserted in positive supply (VCC) input jack 126 and negative supply (VEE) input Hole 127 is not accessed in the case of external power supply, connects self-lock switch S1 112, there is positive supply in existing experimental box power input area 108 Then power supply indicator DS1 is lighted, and having negative supply, then DS2 is lighted.

As shown in figure 4, power access circuit 2 109, the power supply two from existing experimental box power input area 108 is connected to On self-lock switch S2, filtered using RC；Power supply two (VCC2) input jack 128 of external power supply input area 115 is also filtered with RC Wave circuit is connected.When self-lock switch S2 111 disconnects, if power supply two (VCC2) input jack 128 has accessed power supply, Power supply indicator DS3 is lighted.When power supply two (VCC2) input jack 128 does not access external power supply, self-lock switch is connected S2 111, there is power supply in existing experimental box power input area 108, and second power supply indicator DS3 is lighted.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of universal expansion module of building block type high-frequency circuit experiment box, which is characterized in that including general expansion module, building blocks Formula high-frequency circuit experimental box and the circuit module being arranged in the building block type high-frequency circuit experiment box；The general expansion mould It is realized and is electrically connected by connector between block and building block type high-frequency Experiment of Electrical Circuits box body；

The circuit module includes: module one, module two, module three, module four, module five, module six, module seven, module eight With module nine；

The general expansion module includes double-sided printed-circuit board, the circuit design area being arranged on the double-sided printed-circuit board And support isolation post holes；The circuit design area includes:

The existing experimental box power input area of circuit design area left and right ends is set；

The signal input area of circuit design area lower left is set；

The signal output area of circuit design area lower right is set；

The external power supply input area of the signal input area and signal output area middle position is set；

Power access circuit two on the left of the signal input area is set；

Power access circuit one on the right side of the signal output area is set；

The common power supply area of coverage on the upside of the circuit design area is set；

It is arranged on the downside of the circuit design area and uses very much the power supply area of coverage；

For student when designing circuit, input signal is first coupled to signal input area, then is connected to circuit design by signal input area Zone position is transmitted to signal output area by the circuit output signal in circuit design area.

2. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 1, which is characterized in that institute Stating power access circuit one includes self-lock switch S1, filter circuit one and power supply indicator one；The power access circuit two Including self-lock switch S2, filter circuit two and power supply indicator two；The power supply in the existing experimental box power input area passes through Self-lock switch is connected with filter circuit and power supply indicator, provides and building block type high-frequency circuit experiment box for general expansion module Identical power supply；The external power supply input area is also electrically connected with power access circuit, and the self-lock switch is existing when depressing The plant-grid connection in experimental box power input area, the power supply power supply accessed when self-lock switch is not depressed by external power supply input area.

3. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 1 or 2, feature exist In the general expansion module can only be selected by one of existing experimental box power input area and external power supply input area mode To power.

4. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 1, which is characterized in that institute Stating the common power supply area of coverage includes two channels: the channel VCC and the channel GND one；Described includes very three with the power supply area of coverage Channel: the channel VEE, the channel VCC2, the channel GND two；The channel VCC, the channel GND one, the channel VEE, the channel VCC2 and GND are logical Road two is all a line via hole interconnected, and voltage is respectively VCC, GND, VEE, VCC2 and GND；By the plant-grid connection electricity Common power supply and the common power supply area of coverage behind road one or two are electrically connected, very electrical with the power supply area of coverage with power supply and very Connection.

5. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 4, which is characterized in that institute In the channel VCC and the channel GND one for stating the common power supply area of coverage, every 3 via holes are one group, are divided between organizing between interior via hole 2.54mm, between every group of via hole between be divided into 7.62mm, reserve the space of silk-screen prompt letter；The power supply area of coverage is used very much described The channel VEE, in the channel VCC2 and the channel GND two between via hole and via hole between be divided into 2.54mm, two sides reserve silk-screen prompt word Female space.

6. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 1, which is characterized in that institute State circuit design area further include: via hole matrix A, via hole matrix B and via hole Matrix C, the via hole matrix A and via hole matrix B are M1 row * N1 column cross hole matrix, and via hole Matrix C crosses hole matrix for M2 row * N2 column, and wherein M1, N1, M2, N2 are positive integer.

7. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 6, which is characterized in that institute Mutually insulated between via hole matrix A, via hole matrix B and via hole Matrix C is stated, it is each to cross each column via hole mutual conduction in hole matrix, Mutually insulated between every row via hole.

8. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 7, which is characterized in that institute State via hole matrix A, via hole matrix B and via hole Matrix C via hole up and down column alignment, it is each cross hole matrix in, every row via hole with 2.54mm is divided between via hole, between each column via hole and via hole between be divided into 2.54mm, the via hole matrix A and via hole matrix B Between between be divided into 3.81mm, between the via hole matrix B and via hole Matrix C between be divided into 7.62mm.

9. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 1, which is characterized in that institute Stating signal input area further includes input module and input GND module；The signal output area further includes output module and output GND Module；The input module, input GND module, output module and output GND module also all include the via hole of M3 row * N3 column Matrix, calibrating terminal and jack three parts, the three parts are sequentially connected, and are crossed via hole in hole matrix and are connect with via hole.

10. a kind of universal expansion module of building block type high-frequency circuit experiment box according to claim 1, which is characterized in that The general expansion module and the circuit module in building block type high-frequency circuit experiment box are in the same size, in the general expansion module The circuit module of design can replace the module one being arranged in the building block type high-frequency circuit experiment box between module nine Any one or several modules.