CN208283510U - A kind of circuit, device and multimeter measuring thyristor - Google Patents
A kind of circuit, device and multimeter measuring thyristor Download PDFInfo
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- CN208283510U CN208283510U CN201820922512.7U CN201820922512U CN208283510U CN 208283510 U CN208283510 U CN 208283510U CN 201820922512 U CN201820922512 U CN 201820922512U CN 208283510 U CN208283510 U CN 208283510U
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- thyristor
- analog switch
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Abstract
The utility model relates to a kind of circuits for measuring thyristor, it is characterized in that, it include: at least two analog switches and processing unit, two analog switches are separately connected the processing unit, the wherein control electrode (G) of the first analog switch (S1) connection thyristor, 4th analog switch (S4) connects the second main electrode (T2) of the thyristor, the first main electrode (T1) ground connection of the thyristor.Circuit, device and the multimeter of one of the utility model measurement thyristor, it may be implemented tested thyristor need to be only inserted into the corresponding interface of multimeter, it can directly judge the quality and conducting resistance of thyristor, experienced person can also be directly from reading come situations such as judging pin arrangements, such mode be all effective for the test of unidirectional thyristor and bidirectional thyristor simultaneously.
Description
Technical field
The utility model belongs to field of measuring technique, and in particular to a kind of circuit, device and multimeter for measuring thyristor.
Background technique
Thyristor can work as a kind of common switching electronics under the conditions of high voltage, high current, and its work
It can control as process, be widely used in the electronics such as controlled rectification, AC voltage adjusting, contactless electronic beam switch, inversion and frequency conversion
It is the equipment of typical Small current control high current in circuit.Its detection mode is common are as follows: passes through two of existing multimeter
Test pencil distinguishes the different voltage across poles of repeated measurement, finally obtains the pin data of thyristor, but cannot but have with multimeter
The quality of the test thyristor of effect, led to and be broken certainly if surveying two electrode resistances, but it is obstructed be just not necessarily, brilliant lock
One electrode of pipe and control interpolar diode characteristic are unobvious, positive to lead to not at all or forward reverse resistance be all 0 is to be broken, but anti-
It can not say to " electric leakage " and just be broken, it can be effectively by being measured with the diode shelves of multimeter unlike common diode
According to whether forward conduction reversely ends to judge quality.And the test of bidirectional thyristor and unidirectional thyristor in the prior art
Method is also different, brings inconvenience to test.
Therefore to solve the above-mentioned problems, a kind of circuit, device and general-purpose for capableing of easy, intuitive measurement thyristor is provided
Table is particularly important.
Utility model content
In view of the above problems, the object of the present invention is to provide it is a kind of measure thyristor circuit, device and multimeter,
Solve the complexity and risk of thyristor measurement method in the prior art.
To achieve the above object, the utility model takes following technical scheme:
The circuit of one of the utility model measurement thyristor, comprising: at least two analog switches and processing unit,
Two analog switches are separately connected the processing unit, wherein the control electrode of the first analog switch (S1) connection thyristor
(G), the 4th analog switch (S4) connects the second main electrode (T2) of the thyristor, the first main electrode (T1) of the thyristor
Ground connection.
The circuit of above-mentioned measurement thyristor, it is preferred that further include: third analog switch (S3), first analog switch
(S1) third analog switch (S3) is connected, the control electrode (G) of third analog switch (S3) the connection thyristor.
The circuit of above-mentioned measurement thyristor, it is preferred that further include: the second analog switch (S4), the 4th analog switch
(S4) second analog switch (S2) is connected, second analog switch (S2) connects the second main electrode of the thyristor
(T2)。
The circuit of above-mentioned measurement thyristor, it is preferred that further include: first resistor (R1) and second resistance (R2), it is described
One end of first resistor (R1) connects the third analog switch (S3), and the other end connects the control electrode (G) of the thyristor,
One end of the second resistance (R2) connects second analog switch (S2), and the other end connects the second master of the thyristor
Electrode (T2).
The circuit of above-mentioned measurement thyristor, it is preferred that further include: AD conversion unit and display unit, the modulus
Input terminal connection second resistance (R2) of converting unit and the second main electrode of the thyristor (T2), the AD conversion unit
Output end connect the display unit.
One of the utility model measures the device of thyristor, the circuit comprising as above any measurement thyristor
And socket, the socket are used to for being inserted into the socket tested thyristor and measure.
One of the utility model measures the multimeter of thyristor, the electricity comprising as above any measurement thyristor
Road.
One of the utility model measures circuit, device and the multimeter of thyristor, and may be implemented only need to be by tested crystalline substance
Brake tube is inserted into the corresponding interface of multimeter, so that it may directly judge the quality and conducting resistance of thyristor, while experienced
Personnel can also be directly from reading come situations such as judging pin arrangements, such mode be for unidirectional thyristor and bidirectional thyristor
Test it is all effective.
Detailed description of the invention
Fig. 1 is a kind of electrical block diagram for measuring thyristor in the utility model embodiment.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
A kind of circuit of measurement thyristor described in the utility model embodiment, comprising: at least two analog switches and
Processing unit, two analog switches are separately connected the processing unit, wherein the first analog switch (S1) connects thyristor
Control electrode (G), the 4th analog switch (S4) connects the second main electrode (T2) of the thyristor, and the first of the thyristor is main
Electrode (T1) ground connection.Specifically, two analog switches are single-pole double-throw switch (SPDT), the first analog switch (S1) and the 4th simulation
The input terminal of switch (S4) is all connected with the output end of processing unit, defeated from the processing unit to first analog switch (S1)
High level or low level out, the control electrode (G) of the stationary contact connection thyristor of the first analog switch (S1), two movable contact
It is separately connected high level+VDD and low level-VDD；Second main electricity of the stationary contact connection thyristor of the 4th analog switch (S4)
Pole (T2), two movable contact are separately connected high level+VDD and low level-VDD.When test thyristor forward conduction or
When person's reverse-conducting, processing unit exports high level+VDD or low level-VDD；Wherein, the first analog switch (S1) and
Four analog switches (S4) high level+the VDD of acquisition or low level-VDD are respectively loaded on the control electrode (G) of thyristor with
And second main electrode (T2), the control electrode (G) of thyristor and the level of the second main electrode (T2) are equal at this time, and the first main electricity
Pole (T1) ground connection, therefore when thyristor forward conduction or reverse-conducting, corresponding electric conduction can be measured on thyristor
Pressure, otherwise the thyristor is abnormal.
The circuit of measurement thyristor in the utility model embodiment, preferably, further include: third analog switch (S3),
First analog switch (S1) connects third analog switch (S3), the control of third analog switch (S3) the connection thyristor
Pole (G).Specifically, third analog switch (S3) is also single-pole double-throw switch (SPDT), input terminal connects the output end of processing unit,
Stationary contact connect thyristor control electrode (G), two movable contact be separately connected the first analog switch (S1) stationary contact and
Ground connection；When testing thyristor forward direction shutdown or reversed shutdown, processing unit is to the first analog switch (S1) and the
Three analog switches (S3) export zero level, promote the stationary contact of third analog switch (S3) to connect the movable contact that voltage is 0V, make
Obtaining the voltage in the control electrode (G) of thyristor is 0；And the output end of processing unit exports high level to the 4th analog switch (S4)
Perhaps high level+the VDD of acquisition or low level-VDD are loaded onto second to+VDD by the 4th analog switch (S4) of low level-VDD
Main electrode (T2) forms pressure drop between the control electrode (G) and the second main electrode (T2) of thyristor at this time.At this point, working as thyristor just
To when shutdown or reversed shutdown, corresponding open-circuit voltage can be measured on thyristor, otherwise the thyristor is abnormal.
In the another preferred embodiment of the utility model, as shown in Figure 1, comprising: at least four analog switches and processing
Unit 10 (MCU), four analog switches are separately connected the processing unit 10, wherein the first analog switch (S1) connection the
Three analog switches (S3), the control electrode (G) of third analog switch (S3) the connection thyristor, the connection of the 4th analog switch (S4)
Second analog switch (S2), second analog switch (S2) connect the second main electrode (T2) of tested thyristor, the crystalline substance lock
The first main electrode (T1) of pipe is grounded.Specifically, four analog switches are single-pole double-throw switch (SPDT)s, the pin 1 and 3 of each switch
The stationary contact switched thus, pin 2 are movable contact.Processing unit 10 have 4 output ports PA1, PA2, PA3 and
PA4, wherein the input terminal CON of the first analog switch (S1) is directly connected to PA1, and the input terminal CON of third analog switch (S3) is straight
PA2 is met in succession, and the input terminal CON of the second analog switch (S2) is directly connected to PA3, the input terminal CON of the 4th analog switch (S4)
It is directly connected to PA4.In the utility model embodiment, simulated respectively to four from processing unit 10 by different output ports
The input terminal of switch exports corresponding voltage value, to control the movement of analog switch.On the other hand, two of them analog switch
Stationary contact be connected to tested thyristor.Specifically, the control of the stationary contact connection thyristor of the third analog switch (S3)
Pole (G) processed, the stationary contact of second analog switch (S2) connect the second main electrode (T2) of tested thyristor, the thyristor
The first main electrode (T1) ground connection, three pins of such thyristor can be into after being connected in the utility model embodiment
The subsequent measurement of row.
In preferred embodiment, in order to test the forward conduction of thyristor Q1, four output ports of processing unit 10
PA1, PA2, PA3 and PA4 export high level+VDD；Wherein, PA3 and PA4 control respectively the second analog switch (S2) with
And the 4th analog switch (S4) output high level+VDD and be loaded onto the control electrode (G) of Q1；Output end through the processing unit again
Mouthful PA1 and PA2 also exports high level+VDD and is loaded onto the second main electrode (T2) of Q1, at this time the control electrode (G) of Q1 and
The level of second main electrode (T2) is equal, and the first main electrode (T1) is grounded, therefore when Q1 forward conduction, can survey on Q1
Conducting voltage is obtained, may determine that it is unidirectional thyristor or exception if the non-forward conduction of Q1.
Then, when Q1 is not turned on, in order to determine whether Q1 is unidirectional thyristor, four output ports of processing unit 10
PA1, PA2, PA3 and PA4 export low level-VDD；Wherein, PA3 and PA4 control respectively the second analog switch (S2) with
And the 4th analog switch (S4) output low level-VDD and be loaded onto the control electrode (G) of Q1；Output end through the processing unit again
Mouthful PA1 and PA2 also exports low level-VDD and is loaded onto the second main electrode (T2) of Q1, at this time the control electrode (G) of Q1 and
The level of second main electrode (T2) is equal, and the first main electrode (T1) is grounded, therefore when Q1 reverse-conducting, can survey on Q1
Conducting voltage is obtained, may determine that it is also not reverse-conducting if Q1 is not turned on still, Q1 may be problematic, such as not connect
It connects, damage or short circuit.
After judging the thyristor Q1 for forward conduction or reverse-conducting, can then judge whether it being capable of zero passage
Shutdown.Specifically, four output ports PA1, PA2, PA3 and PA4 of processing unit 10 export zero level, at this point, Q1
Voltage between control electrode (G), the second main electrode (T2) and the first main electrode (T1) is equal and is zero, and Q1 zero passage is closed at this time
It is disconnected normal.
The test for then also needing to carry out positive shutdown for the thyristor of forward conduction, to the thyristor of reverse-conducting into
The test that row reversely turns off.Specifically, for the thyristor Q1 of forward conduction, the output port PA1 and PA2 of processing unit 10
Zero level is exported, control electrode (G) the output OV of Q1 is controlled, and the output port PA3 and PA4 of processing unit 10 control the respectively
Two analog switches (S2) and the 4th analog switch (S4) output high level+VDD and the control electrode (G) for being loaded onto Q1, at this time just
The open-circuit voltage of normally-off thyristor is+VDD.And the processing mode reversely turned off are as follows: the output port PA1 of processing unit 10
And PA2 exports zero level, controls control electrode (G) the output 0V of Q1, and the output port PA3 and PA4 of processing unit 10 divide
The second analog switch (S2) and the 4th analog switch (S4) output low level-VDD and the control electrode for being loaded onto Q1 are not controlled
(G), the open-circuit voltage of the thyristor of normal turn-off is-VDD at this time.
Above can by the circuit of the measurement thyristor described in the utility model embodiment to unidirectional thyristor and
Bidirectional thyristor is tested and is distinguished, the circuit can it is fully automated measurement thyristor performance indicator, additionally it is possible to pass through survey
The voltage value of amount thereon obtains the state of thyristor, provides conveniently mode to analyze the quality of thyristor, solves
Unidirectional thyristor and bidirectional thyristor need the problem of being tested using different measurement methods in the prior art, and
Solve test process complexity in the prior art, the inconvenience of labor intensive cost.
In above-mentioned specific embodiment, the circuit of thyristor is measured further include: first resistor (R1) and second resistance
(R2), one end of the first resistor (R1) connects the third analog switch (S3), and the other end connects the thyristor
Control electrode (G), one end of the second resistance (R2) connect second analog switch (S2), the other end connection brilliant lock
The second main electrode (T2) of pipe.Specifically, by taking the forward conduction for testing thyristor Q1 as an example, two output ports of processing unit
PA3 and PA4 is defeated to the input terminal CON of the input terminal CON of the second analog switch (S2) and the 4th analog switch (S4) respectively
High level+VDD out, at this point, what is connect due to the stationary contact 3 of the 4th analog switch (S4) is high level, movable contact 2 and stationary contact
3 connection of point, therefore the movable contact 2 of S4 is connect with the stationary contact 1 of the second analog switch (S2), so that the second analog switch (S2)
Stationary contact 1 is also high level.Due to the input terminal CON also input high level of the second analog switch (S2), the second simulation is opened
The movable contact 2 for closing (S2) is engaged with its stationary contact 1.High level+VDD passes through in the second analog switch (S2) second resistance R2, most
High level+VDD is loaded onto the second main electrode (T2) of Q1 at last；And other two output port PA1 of processing unit 10 with
And PA2 also exports height to the input terminal CON of the input terminal CON of the first analog switch (S1) and third analog switch (S3) respectively
Level+VDD, what is connect due to the stationary contact 1 of the first analog switch (S1) is high level, and movable contact 2 is connect with stationary contact 1,
Therefore movable contact 2 is directly by high level output to the stationary contact 1 of third analog switch (S3), defeated due to three analog switches (S3)
Outlet is also to receive high level, therefore its movable contact 2 is directly connect with stationary contact 1, and high level+VDD is opened by third simulation
It closes in (S3) first resistor R1, high level+VDD is finally loaded onto the control electrode (G) of Q1.
When testing the zero-crossing switching of thyristor, four output ports PA1, PA2, PA3 and PA4 of processing unit 10 are equal
Zero level is exported, the input terminal CON of the first analog switch (S1) is zero level at this time, therefore no-voltage on its movable contact 2, and by
It is zero level in the input terminal CON of third analog switch (S3), and its stationary contact 3 also connects 0V voltage, therefore third analog switch
(S3) movable contact 2 is connect with stationary contact 3, makes voltage zero in the control electrode (G) of Q1.On the other hand, the 4th analog switch
(S4) input terminal CON is zero level, therefore no-voltage on its movable contact 2, and due to the input terminal of the second analog switch (S2)
CON is zero level, and its stationary contact 3 also connects 0V voltage, therefore the second analog switch (S2) movable contact 2 is connect with stationary contact 3, is made
Voltage in the second main electrode (T2) of Q1 is also zero, so far if the control electrode (G) of Q1, the second main electrode (T2) and first
Voltage between main electrode (T1) is equal and is zero, and Q1 zero-crossing switching is normal at this time.
A kind of circuit of measurement thyristor described in the utility model specific embodiment, preferably, as shown in Figure 1, also
It include: AD conversion unit 11 and display unit 12, the input terminal of the AD conversion unit 11 connects second resistance (R2)
And second main electrode of thyristor (T2), the output end of the AD conversion unit 11 connect the display unit 12.Tool
Body, AD conversion unit 11 obtains the voltage ADP of tested thyristor Q1, and is shown after being turned by modulus by display unit, can
With the step of saving measurement, therefore to realize that the utility model specific embodiment provides more convenient mode.
The utility model embodiment also provides a kind of device for measuring thyristor, includes institute in any one embodiment as above
The circuit and socket for the measurement thyristor stated, the socket are used to for being inserted into the socket tested thyristor and measure.
Specifically, by after a kind of device of the foregoing circuit integration packaging at measurement thyristor, then it is provided with socket on the apparatus, this is inserted
In three holes of mouth, two of them hole is separately connected the movable contact 2 of the second analog switch and third analog switch, another
Hole ground connection, thyristor tested in this way, which can be inserted directly into the socket, to be measured.
The utility model embodiment further includes a kind of multimeter for measuring thyristor, comprising in any one embodiment as above
The circuit of the measurement thyristor.Preferably, by the circuit integration of above-mentioned measurement thyristor into multimeter, so that multimeter
Can be directly realized by measurement thyristor function, without being taken multiple measurements with test pencil, not only facilitate and also save the time at
This.
To sum up, circuit, device, multimeter and the method for one of the utility model embodiment measurement thyristor, can be with
Need to only tested thyristor be inserted into the corresponding interface of multimeter by realizing, so that it may directly judge the quality and conducting of thyristor
Resistance, while experienced person can also be directly from reading come situations such as judging pin arrangements, such mode be for unidirectional brilliant lock
The test of pipe and bidirectional thyristor is all effective.
The utility model is not limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model
Other various forms of products, however, make any variation in its shape or structure, it is all that there is same as the present application or phase
Approximate technical solution, all falls within the protection scope of the utility model.
Claims (7)
1. a kind of circuit for measuring thyristor characterized by comprising at least two analog switches and processing unit, two
The analog switch is separately connected the processing unit, wherein the control electrode (G) of the first analog switch (S1) connection thyristor, the
Four analog switches (S4) connect the second main electrode (T2) of the thyristor, the first main electrode (T1) ground connection of the thyristor.
2. a kind of circuit for measuring thyristor according to claim 1, which is characterized in that further include: third analog switch
(S3), the first analog switch (S1) connection third analog switch (S3), the third analog switch (S3) connect thyristor
Control electrode (G).
3. a kind of circuit for measuring thyristor according to claim 2, which is characterized in that further include: the second analog switch
(S4), the 4th analog switch (S4) connects second analog switch (S2), and second analog switch (S2) connects institute
State the second main electrode (T2) of thyristor.
4. a kind of circuit for measuring thyristor according to claim 3, which is characterized in that further include: first resistor (R1)
And second resistance (R2), one end of the first resistor (R1) connect the third analog switch (S3), other end connection
One end of the control electrode (G) of the thyristor, the second resistance (R2) connects second analog switch (S2), the other end
Connect the second main electrode (T2) of the thyristor.
5. a kind of circuit for measuring thyristor according to claim 4, which is characterized in that further include: AD conversion unit
And display unit, input terminal connection second resistance (R2) of the AD conversion unit and the second main electrode of the thyristor
(T2), the output end of the AD conversion unit connects the display unit.
6. a kind of device for measuring thyristor, which is characterized in that include the measurement crystalline substance lock as described in claim 1-5 any one
The circuit and socket of pipe, the socket are used to for being inserted into the socket tested thyristor and measure.
7. a kind of multimeter for measuring thyristor, which is characterized in that brilliant comprising the measurement as described in claim 1-5 any one
The circuit of brake tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820922512.7U CN208283510U (en) | 2018-06-14 | 2018-06-14 | A kind of circuit, device and multimeter measuring thyristor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820922512.7U CN208283510U (en) | 2018-06-14 | 2018-06-14 | A kind of circuit, device and multimeter measuring thyristor |
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| CN208283510U true CN208283510U (en) | 2018-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828423A (en) * | 2018-06-14 | 2018-11-16 | 优利德科技(中国)股份有限公司 | A kind of circuit, device, multimeter and method measuring thyristor |
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2018
- 2018-06-14 CN CN201820922512.7U patent/CN208283510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828423A (en) * | 2018-06-14 | 2018-11-16 | 优利德科技(中国)股份有限公司 | A kind of circuit, device, multimeter and method measuring thyristor |
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