CN209859431U - IGBT power tube characteristic training board - Google Patents

Abstract

The utility model discloses a real board of instructing of IGBT power tube characteristic relates to real equipment field of instructing, including UG voltage regulation knob, 12V power input positive binding post, 12V power input negative binding post, bottom plate and IGBT pipe, the top of bottom plate upper surface is provided with the topic display area, topic display area below printing has the circuit diagram, inside the circuit diagram install the bulb on the bottom plate, the bulb below is provided with the IGBT pipe, the circuit diagram with the safety cover has been detained to the top in topic display area, the below of circuit diagram is provided with UG voltage regulation knob, one side of UG voltage regulation knob has set gradually 12V power input positive binding post still is provided with voltmeter and ampere meter on the bottom plate. Has the advantages that: the utility model discloses a real standard board can be fixed and use at the teaching board, both can use teaching and also can use real standard, lets the observation IGBT power tube characteristic change that students are clearer.

Description

IGBT power tube characteristic training board

Technical Field

The utility model relates to a real standard equipment field specifically relates to real standard board of IGBT power tube characteristic.

Background

The IGBT is an insulated gate bipolar transistor, is a composite fully-controlled voltage-driven power semiconductor device consisting of a BJT (bipolar junction transistor) and an MOS (insulated gate field effect transistor), and has the advantages of both high input impedance of the MOSFET and low conduction voltage drop of the GTR. The GTR saturation voltage is reduced, the current carrying density is high, but the driving current is large; the MOSFET has small driving power, high switching speed, large conduction voltage drop and small current carrying density. The IGBT integrates the advantages of the two devices, and has small driving power and reduced saturation voltage. The current-voltage characteristic of the IGBT is a relation curve between drain current and grid voltage when grid source voltage Ugs is used as a parameter. The output drain current ratio is controlled by the gate-source voltage Ugs, and the higher Ugs, the larger Id. It is similar to the output characteristic of the GTR and can be divided into a saturation region 1, an amplification region 2 and a breakdown characteristic 3. In the IGBT in the off state, a forward voltage is borne by the J2 junction, and a reverse voltage is borne by the J1 junction. If no N + buffer zone exists, the forward and reverse blocking voltage can be the same level, and after the N + buffer zone is added, the reverse turn-off voltage can only reach the level of dozens of volts, so that certain application range of the IGBT is limited.

When the characteristics of the IGBT power tube are discussed and detected, the current and voltage of the detector need to be changed, and a practical training device is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a real standard board of IGBT power tube characteristic just in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

real board of instructing of IGBT power tube characteristic, including UG voltage regulation knob, 12V power input positive binding post, 12V power input negative binding post, bottom plate and IGBT pipe, the top of bottom plate upper surface is provided with the subject display area, subject display area below printing has the circuit diagram, inside the circuit diagram install the bulb on the bottom plate, the bulb below is provided with the IGBT pipe, the circuit diagram with the safety cover has been detained to the top in subject display area, the below of circuit diagram is provided with UG voltage regulation knob, one side of UG voltage regulation knob has set gradually 12V power input positive binding post 12V power input negative binding post, A jack, B jack, C jack, D jack and E jack, still be provided with voltmeter and ampere meter on the bottom plate.

In order to further improve the use effect of the IGBT power tube characteristic training board, the back surface of the bottom plate is provided with a connecting circuit which is convenient for connecting each component and jack.

In order to further improve the using effect of the IGBT power tube characteristic training board, a circuit protection box is fixed on the back of the bottom plate through screws, so that the connecting circuit on the back of the bottom plate can be protected conveniently.

In order to further improve the using effect of the IGBT power tube characteristic training board, the IGBT tube adopts H20R1203, three pins of the IGBT tube penetrate through the bottom board and are connected to the connecting circuit, and the three pins are respectively connected with the C jack, the D jack and the E jack.

In order to further improve the use effect of the IGBT power tube characteristic training board, the bulb is connected to the connecting circuit on the back surface of the bottom plate, and two terminals of the bulb are respectively connected to the B jack and the E jack through the connecting circuit.

In order to further improve the using effect of the IGBT power tube characteristic training board, 2 voltmeters are arranged, 3 ampere meters are arranged, and the voltmeters and the ampere meters are connected into the connecting circuit through wires.

In order to further improve the using effect of the IGBT power tube characteristic training plate, 6 strong magnets are installed on the bottom plate, so that the teaching and displaying on the iron adsorption plate are facilitated.

In the structure, the UG voltage adjusting knob is used for adjusting grid voltage, the 12V power input positive terminal is externally connected with a 12V power positive terminal, the 12V power supply input negative electrode connecting terminal is externally connected with a 12V power supply negative electrode wire, the A jack is externally connected with the positive electrode of a grid ammeter, the jack B is externally connected with the cathode of a grid ammeter, the jack C is connected with the collector terminal of the IGBT and the anode of a voltmeter, the IGBT collector voltage can be measured, the D jack is externally connected with the cathode of a collector ammeter terminal, the E jack is externally connected with the cathode of an emitter ammeter terminal, the protective cover is made of an acrylic material and plays a role in protection and dust prevention, the bulb is a collector load, after the training plate is electrified, and adjusting the UG voltage adjusting knob to enable the IGBT to be conducted, enabling the bulb circuit to form a loop to be conducted and lighted, and processing and injection molding the bottom plate by adopting a 95 x 95mm mold.

Has the advantages that: the utility model discloses a real standard board can be fixed and use at the teaching board, both can use teaching and also can use real standard, lets the observation IGBT power tube characteristic change that students are clearer.

Drawings

Fig. 1 is a schematic diagram of a front panel of an IGBT power tube characteristic training panel of the present invention;

fig. 2 is the wiring diagram of the connection circuit of the IGBT power tube characteristic training board of the present invention;

the reference numerals are explained below:

1. a UG voltage adjustment knob; 2. a 12V power supply input positive terminal; 3. a 12V power supply input negative terminal; 4. a, inserting holes; 5. b, inserting holes; 6. c, inserting holes; 7. d, inserting holes; 8. e, inserting holes; 9. a base plate; 10. a protective cover; 11. a bulb; 12. an IGBT tube; 13. a circuit diagram; 14. an ammeter; 15. a voltmeter; 16. a subject display area.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-2, the IGBT power tube characteristic training board includes a UG voltage adjusting knob 1, a 12V power input positive terminal 2, a 12V power input negative terminal 3, a bottom plate 9 and an IGBT tube 12, wherein a subject display area 16 is provided at the top end of the upper surface of the bottom plate 9, the subject display area 16 is used for printing a subject, a circuit diagram 13 is printed below the subject display area 16, a bulb 11 is mounted on the bottom plate 9 inside the circuit diagram 13, the IGBT tube 12 is provided below the bulb 11, a protective cover 10 is fastened above the circuit diagram 13 and the subject display area 16, the UG voltage adjusting knob 1 is provided below the circuit diagram 13, the 12V power input positive terminal 2 and the 12V power input negative terminal 3 are sequentially provided at one side of the UG voltage adjusting knob 1, jack 4, jack 5, C jack 6, D jack 7 and E jack 8 of A, still be provided with voltmeter 15 and ampere meter 14 on the bottom plate 9.

In order to further improve the using effect of the practical training plate for the characteristics of the IGBT power tube, the back surface of the bottom plate 1 is provided with a connecting circuit for connecting each component and jack, the back surface of the bottom plate 1 is fixedly provided with a circuit protection box for protecting the back surface of the bottom plate 1 through screws, the IGBT tube 12 adopts H20R1203, three pins of the IGBT tube 12 penetrate through the bottom plate 9 to be connected to the connecting circuit, the three pins are respectively connected with a C jack 6, a D jack 7 and an E jack 8, the bulb 11 is connected into the connecting circuit on the back surface of the bottom plate 9, two terminals of the bulb 11 are respectively connected to the B jack 5 and the E jack 8 through the connecting circuit, the voltmeter 15 is provided with 2, the ammeter 14 is provided with 3, the voltmeter 15 and the ammeter 14 are connected into the connecting circuit through wires, and 6 strong magnets are installed on the bottom plate 9 for facilitating teaching and displaying.

In the structure, UG voltage adjusting knob 1 is used for grid voltage adjustment, 12V power input positive terminal 2 external 12V power positive line, 12V power input negative terminal 3 external 12V power negative line, A jack 4 external grid ampere meter positive pole, B jack 5 external grid ampere meter negative pole, C jack 6 inserts IGBT collector terminal, external voltmeter positive pole, measurable IGBT collector voltage, D jack 7 external collector ampere meter terminal negative pole, E jack 8 external emitter ampere meter terminal negative pole, safety cover 10 uses the inferior gram inferior material, play the dustproof effect of protection, bulb 12 is the collector load, real standard board circular telegram back, UG voltage adjusting knob is adjusted, make IGBT switch on, bulb circuit forms the return circuit and switches on and lights, bottom plate 9 adopts 95 x 95mm mould processing injection moulding.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model discloses real board of instructing of IGBT power tube characteristic, including UG voltage regulation knob, 12V power input positive binding post, 12V power input negative binding post, bottom plate and IGBT pipe, its characterized in that: the top of bottom plate upper surface is provided with the topic display area, topic display area below printing has the circuit diagram, inside the circuit diagram install the bulb on the bottom plate, the bulb below is provided with the IGBT pipe, the circuit diagram with the safety cover has been detained to the top in topic display area, the below of circuit diagram is provided with UG voltage adjust knob, one side of UG voltage adjust knob has set gradually 12V power input positive binding post 12V power input negative binding post, A jack, B jack, C jack, D jack and E jack, still is provided with voltmeter and ampere meter on the bottom plate.
2. 2. The IGBT power tube characteristic training board according to claim 1, characterized in that: the back of the bottom plate is provided with a connecting circuit which is convenient for connecting each component and each jack.
3. 3. The IGBT power tube characteristic training board according to claim 2, characterized in that: the circuit protection box is fixed on the back of the bottom plate through screws, so that the circuit protection box can protect the connecting circuit on the back of the bottom plate.
4. 4. The IGBT power tube characteristic training board according to claim 2, characterized in that: the IGBT tube adopts H20R1203, three pins of the IGBT tube penetrate through the bottom plate and are connected to the connecting circuit, and the three pins are respectively connected with the C jack, the D jack and the E jack.
5. 5. The IGBT power tube characteristic training board according to claim 2, characterized in that: the bulb is connected to the connecting circuit on the back of the bottom plate, and two terminals of the bulb are connected to the B jack and the E jack through the connecting circuit respectively.
6. 6. The IGBT power tube characteristic training board according to claim 2, characterized in that: the voltmeter is provided with 2, the ampere meter is provided with 3, the voltmeter with the ampere meter passes through the wire and inserts in the connecting circuit.
7. 7. The IGBT power tube characteristic training board according to claim 1, characterized in that: the bottom plate is provided with 6 strong magnets, so that teaching and display on the iron plate can be conveniently absorbed.