CN207752678U - A kind of grounded emitter amplifier experimental plate - Google Patents
A kind of grounded emitter amplifier experimental plate Download PDFInfo
- Publication number
- CN207752678U CN207752678U CN201721245689.XU CN201721245689U CN207752678U CN 207752678 U CN207752678 U CN 207752678U CN 201721245689 U CN201721245689 U CN 201721245689U CN 207752678 U CN207752678 U CN 207752678U
- Authority
- CN
- China
- Prior art keywords
- test lead
- test
- connect
- lead
- resistance
- 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.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 claims abstract description 182
- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 238000002474 experimental method Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000006549 dyspepsia Diseases 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model is related to a kind of grounded emitter amplifier experimental plates, belong to electronic circuits degisn technical field.The utility model includes 16 test leads, potentiometer Rw, resistance Rb1, Rb2, Rc1, Rc2, Re, RL, electrolytic capacitor C1, C2, C3；By the pcb board for designing and producing basic common-emitter amplifier circuit, test lead is reserved in designated position, test lead need to only be connected by conducting wire or is acquired to each data using instruments such as multimeters by student, and record test result, teacher scores according to the test result of student to it, to improve quality of instruction.
Description
Technical field
The utility model is related to a kind of grounded emitter amplifier experimental plates, belong to electronic circuits degisn technical field.
Background technology
In basic total radio amplifier, transistor is the core component of amplifying circuit, in order to judge the fortune of transistor
Row state needs to debug its quiescent point, and during the theory study of transistor working condition, student passes through big
The theoretical formula of amount carries out that quiescent point parameter is calculated, and the working condition of transistor, this reason are judged according to parameter
It is more uninteresting by mode of learning, the learning initiative of student, and the amplification of student's indigestion transistor, saturation, cut-off can be reduced
The real meaning of three kinds of states.
Invention content
The technical problems to be solved in the utility model is：The utility model provides a kind of grounded emitter amplifier experimental plate, is used for
Student is solved when carrying out the experiment of basic total radio amplifier, lacks experience due to building and leads to empty short, empty disconnected phenomenon hair
Raw, debugging is got up difficulty, and is difficult to complete within required class hours, the problem of to influence teaching process, and student is facilitated to manage
Solve transistor amplification, saturation, the real meaning for ending three kinds of states.
Technical solutions of the utility model are：A kind of grounded emitter amplifier experimental plate, including 16 test leads, potentiometer Rw, electricity
Hinder Rb1, Rb2, Rc1, Rc2, Re, RL, electrolytic capacitor C1, C2, C3；Test lead 1 is connect by potentiometer Rw with test lead 2, is surveyed
Examination end 2 passes sequentially through resistance Rb1, Rb2 and test lead 4 connects, and test lead 4 is connect by resistance Rb2 with test lead 5, test lead 5
It is connect with the anode of electrolytic capacitor C1, the cathode of electrolytic capacitor C1 is connect with test lead 3, and the base stage of test lead 5 and triode T connects
It connects, the collector of triode T is connect with the anode of test lead 9 and electrolytic capacitor C2 simultaneously, the cathode of electrolytic capacitor C2 and test
13 connection of end；Test lead 1 is connect with test lead 6, and test lead 7 is connect by resistance Rc1 with test lead 10, and test lead 8 passes through electricity
Resistance Rc2 is connect with test lead 11, and the emitter of triode T is connect with test lead 12, and test lead 12 passes through resistance Re and test lead
4 connections, test lead 12 are connect with the anode of electrolytic capacitor C3, and the cathode of electrolytic capacitor C3 is connected to test lead 4 and test simultaneously
End 14, test lead 15 is connect by resistance RL with test lead 16.
The grounded emitter amplifier experimental plate use process is as follows：
A, test lead 6 is connect with test lead 7 with experiment conducting wire, test lead 9 is connect with test lead 10；
B, its quiescent point is measured：12V DC power supply is accessed to test lead 1 and test from experimental bench with test lead
End 4, test lead 1 connect positive power source terminal, and test lead 4 is grounded；Collector and the transmitting of triode T are measured with multimeter DC voltage shelves
The red test pencil of multimeter is accessed test lead 9 by the voltage Uce of pole, black meter pen accesses test lead 12, adjusts potentiometer Rw, sees
The registration for examining multimeter makes Uce=7V, and the red test pencil of multimeter is then accessed test lead 5, measures the base stage and hair of triode T
The voltage Ube of emitter-base bandgap grading, and record measurement result；
C, voltage gain is measured：Adjustment function generator makes it export ui=5mV, and the sinusoidal signal of f=1kHZ believes sine
Number access test lead 3 and test lead 4, and the positive rapier in the channels oscillograph CH1 is accessed into test lead 3, it bears rapier and accesses test lead
The positive rapier in 4, CH2 channels accesses test lead 13, bears rapier and accesses test lead 14, input-output wave shape is observed on oscillograph,
The positive rapier of ac millivoltmeter is accessed into test lead 13, rapier is born and accesses test lead 14, measure output voltage Uo values；
D, it keeps the position of potentiometer Rw constant, accesses load resistance RL, that is, use experiment conducting wire by test lead 13 and test
15 connection of end, test lead 14 are connect with test lead 16, test its quiescent point and voltage gain by step B and step C, and remember
Record experimental result；
E, it keeps the position of potentiometer Rw constant, disconnects load resistance RL, i.e., connect test lead 13 with test lead 15
Conducting wire is extracted, and the conducting wire that test lead 14 is connect with test lead 16 is extracted, and the conducting wire of test lead 7 is pulled out to test lead 8, test lead 10
Conducting wire pull out to test lead 11, test its quiescent point and voltage gain by step B and step C, and record experimental result, energy
Influence for observing quiescent point variation and to output waveform；
F, upper inclined resistance is increased, Rw is adjusted to 100k Ω, the conducting wire of test lead 8 is pulled out to test lead 7, test lead 11 is led
Line is pulled out to test lead 10, is tested its quiescent point and voltage gain by step B and step C, and record experimental result, can be used for
Observe quiescent point variation and the influence to output waveform；
G, reduce upper inclined resistance, the conducting wire of test lead 1 is pulled out to test lead 2, its static work is tested by step B and step C
Make point and voltage gain, and record experimental result, can be used to observe quiescent point variation and the influence to output waveform.
The utility model has the beneficial effects that：
The utility model on circuit boards by scattered electronic component welding, and is reserved by designing and making pcb board
Correspondingly instrument connection, convenient for carrying out parameter testing by other experimental facilities insert experiment plates and to the experimental circuit, student is only
The circuit on experimental plate need to be connected according to experimental principle figure, and insert experiment equipment is tested by conducting wire, and records survey
Test result, teacher score according to the test result of student to it, to improve quality of instruction, avoid the hair of teaching accident
It is raw, facilitate student to understand transistor amplification, saturation, the real meaning for ending three kinds of states.
Description of the drawings
Fig. 1 is the utility model circuit diagram.
Each label in Fig. 1：1~16- test leads, C1~C3- electrolytic capacitors, Rb1~Rb2- resistance, Rc1~Rc2- resistance,
RL- resistance, Re- resistance, Rw- potentiometers, T- triodes.
Specific implementation mode
Utility model will be further explained below with reference to the attached drawings and specific embodiments.
Embodiment 1：As shown in Figure 1, a kind of grounded emitter amplifier experimental plate, including 16 test leads, potentiometer Rw, resistance
Rb1, Rb2, Rc1, Rc2, Re, RL, electrolytic capacitor C1, C2, C3；Test lead 1 is connect by potentiometer Rw with test lead 2, test
End 2 passes sequentially through resistance Rb1, Rb2 and test lead 4 and connects, and test lead 4 is connect by resistance Rb2 with test lead 5, test lead 5 and
The anode connection of electrolytic capacitor C1, the cathode of electrolytic capacitor C1 are connect with test lead 3, and the base stage of test lead 5 and triode T connects
It connects, the collector of triode T is connect with the anode of test lead 9 and electrolytic capacitor C2 simultaneously, the cathode of electrolytic capacitor C2 and test
13 connection of end；Test lead 1 is connect with test lead 6, and test lead 7 is connect by resistance Rc1 with test lead 10, and test lead 8 passes through electricity
Resistance Rc2 is connect with test lead 11, and the emitter of triode T is connect with test lead 12, and test lead 12 passes through resistance Re and test lead
4 connections, test lead 12 are connect with the anode of electrolytic capacitor C3, and the cathode of electrolytic capacitor C3 is connected to test lead 4 and test simultaneously
End 14, test lead 15 is connect by resistance RL with test lead 16.
The grounded emitter amplifier experimental plate use process is as follows：
A, test lead 6 is connect with test lead 7 with experiment conducting wire, test lead 9 is connect with test lead 10；
B, its quiescent point is measured：12V DC power supply is accessed to test lead 1 and test from experimental bench with test lead
End 4, test lead 1 connect positive power source terminal, and test lead 4 is grounded；Collector and the transmitting of triode T are measured with multimeter DC voltage shelves
The red test pencil of multimeter is accessed test lead 9 by the voltage Uce of pole, black meter pen accesses test lead 12, adjusts potentiometer Rw, sees
The registration for examining multimeter makes Uce=7V, and the red test pencil of multimeter is then accessed test lead 5, measures the base stage and hair of triode T
The voltage Ube of emitter-base bandgap grading, and record measurement result；
C, voltage gain is measured：Adjustment function generator makes it export ui=5mV, and the sinusoidal signal of f=1kHZ believes sine
Number access test lead 3 and test lead 4, and the positive rapier in the channels oscillograph CH1 is accessed into test lead 3, it bears rapier and accesses test lead
The positive rapier in 4, CH2 channels accesses test lead 13, bears rapier and accesses test lead 14, input-output wave shape is observed on oscillograph,
The positive rapier of ac millivoltmeter is accessed into test lead 13, rapier is born and accesses test lead 14, measure output voltage Uo values；
D, it keeps the position of potentiometer Rw constant, accesses load resistance RL, that is, use experiment conducting wire by test lead 13 and test
15 connection of end, test lead 14 are connect with test lead 16, test its quiescent point and voltage gain by step B and step C, and remember
Record experimental result；
E, it keeps the position of potentiometer Rw constant, disconnects load resistance RL, i.e., connect test lead 13 with test lead 15
Conducting wire is extracted, and the conducting wire that test lead 14 is connect with test lead 16 is extracted, and the conducting wire of test lead 7 is pulled out to test lead 8, test lead 10
Conducting wire pull out to test lead 11, test its quiescent point and voltage gain by step B and step C, and record experimental result, energy
Influence for observing quiescent point variation and to output waveform；
F, upper inclined resistance is increased, Rw is adjusted to 100k Ω, the conducting wire of test lead 8 is pulled out to test lead 7, test lead 11 is led
Line is pulled out to test lead 10, is tested its quiescent point and voltage gain by step B and step C, and record experimental result, can be used for
Observe quiescent point variation and the influence to output waveform；
G, reduce upper inclined resistance, the conducting wire of test lead 1 is pulled out to test lead 2, its static work is tested by step B and step C
Make point and voltage gain, and record experimental result, can be used to observe quiescent point variation and the influence to output waveform.
Specific embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model and unlimited
In above-described embodiment, within the knowledge of a person skilled in the art, the utility model can also not departed from
Various changes can be made under the premise of objective.
Claims (2)
1. a kind of grounded emitter amplifier experimental plate, it is characterised in that：Including 16 test leads, potentiometer Rw, resistance Rb1, Rb2,
Rc1, Rc2, Re, RL, electrolytic capacitor C1, C2, C3；Test lead 1 is connect by potentiometer Rw with test lead 2, and test lead 2 leads to successively
It crosses resistance Rb1, Rb2 and test lead 4 connects, test lead 4 is connect by resistance Rb2 with test lead 5, test lead 5 and electrolytic capacitor
The anode connection of C1, the cathode of electrolytic capacitor C1 are connect with test lead 3, and test lead 5 is connect with the base stage of triode T, triode T
Collector connect simultaneously with the anode of test lead 9 and electrolytic capacitor C2, the cathode of electrolytic capacitor C2 is connect with test lead 13；It surveys
Examination end 1 is connect with test lead 6, and test lead 7 is connect by resistance Rc1 with test lead 10, and test lead 8 passes through resistance Rc2 and test
11 connection of end, the emitter of triode T are connect with test lead 12, and test lead 12 is connect by resistance Re with test lead 4, test
End 12 is connect with the anode of electrolytic capacitor C3, and the cathode of electrolytic capacitor C3 is connected to test lead 4 and test lead 14, test lead simultaneously
15 are connect by resistance RL with test lead 16.
2. grounded emitter amplifier experimental plate according to claim 1, it is characterised in that：The test lead 6 connects with test lead 7
It connects, test lead 9 is connect with test lead 10；12V DC power supply to test lead 1 and test lead 4, test lead 1 connects positive power source terminal, test
4 ground connection of end；The red test pencil of multimeter accesses test lead 9, and black meter pen accesses the red test pencil access test of test lead 12 or multimeter
End 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721245689.XU CN207752678U (en) | 2017-09-27 | 2017-09-27 | A kind of grounded emitter amplifier experimental plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721245689.XU CN207752678U (en) | 2017-09-27 | 2017-09-27 | A kind of grounded emitter amplifier experimental plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207752678U true CN207752678U (en) | 2018-08-21 |
Family
ID=63146287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721245689.XU Expired - Fee Related CN207752678U (en) | 2017-09-27 | 2017-09-27 | A kind of grounded emitter amplifier experimental plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207752678U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633750A (en) * | 2017-09-27 | 2018-01-26 | 昆明理工大学 | A kind of grounded emitter amplifier brassboard and its application method |
| CN111162765A (en) * | 2020-01-20 | 2020-05-15 | 山东建筑大学 | Experimental MOSFET (Metal-oxide-semiconductor field Effect transistor) and BJT (Bipolar junction transistor) cascade voltage amplification circuit |
-
2017
- 2017-09-27 CN CN201721245689.XU patent/CN207752678U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107633750A (en) * | 2017-09-27 | 2018-01-26 | 昆明理工大学 | A kind of grounded emitter amplifier brassboard and its application method |
| CN111162765A (en) * | 2020-01-20 | 2020-05-15 | 山东建筑大学 | Experimental MOSFET (Metal-oxide-semiconductor field Effect transistor) and BJT (Bipolar junction transistor) cascade voltage amplification circuit |
| CN111162765B (en) * | 2020-01-20 | 2023-09-22 | 山东建筑大学 | Cascaded voltage amplifying circuit of MOSFET (Metal-oxide-semiconductor field Effect transistor) and BJT (bipolar junction transistor) for experiments |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104345262B (en) | A kind of universal circuit Board Test System | |
| CN105223528B (en) | Adjustable cable partial discharge simulation device | |
| CN110045208A (en) | It is a kind of for quickly detecting the fexible unit and method of electric connector | |
| CN201654130U (en) | Automatic measuring and calibrating device of high-impedance measuring apparatus | |
| CN207752678U (en) | A kind of grounded emitter amplifier experimental plate | |
| CN107748348A (en) | The high-voltage electric energy meter calibrating installation that can integrally trace to the source | |
| CN110441705A (en) | Battery impedance test device and method | |
| CN204789761U (en) | Relay contact resistance measuring device | |
| CN207440274U (en) | The high-voltage electric energy meter calibrating installation that can integrally trace to the source | |
| CN204406747U (en) | Table family wiring error verifies trainer | |
| CN106443549B (en) | A kind of analog AC resistance device for calibration battery internal resistance test device | |
| CN207895748U (en) | A kind of experimental plate with two-stage amplifying circuit | |
| CN205103654U (en) | Automatically controlled detecting system of multi -purpose vehicle(MPV) | |
| CN209387858U (en) | Electrical energy measurement wiring is corrected errors decision maker | |
| CN107945634A (en) | Modular analog circuit experiment apparatus | |
| CN201852886U (en) | Multifunctional earth resistance tester | |
| CN107633750A (en) | A kind of grounded emitter amplifier brassboard and its application method | |
| CN201859586U (en) | Inductance characteristic experiment device used in virtual experimental teaching of circuit | |
| CN109493673A (en) | Electric energy metering device wiring is just misidentifying training evaluation system | |
| CN112098914B (en) | Real-power-environment-based operation quality testing system and evaluation method for metering low-voltage current transformer | |
| CN207249975U (en) | A kind of single tube voltage amplifier experimental plate | |
| CN104515968A (en) | Calibration device for capacitor instant open/short circuit tester and calibration method | |
| CN212966712U (en) | Electricity laboratory glassware operation data acquisition system | |
| CN204332130U (en) | A kind of Identify chip and detection device for training skill | |
| CN109946635B (en) | Conducted sensitivity test system checking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180821 Termination date: 20190927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |