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Comprehensive experimental equipment for electrician, analogue, digital, electric power

Structure and equipment

1. Experimental table: see the color picture, one table with two seats, the overall size of the table: 160x70x8Ocm. A universal circuit board is arranged in the center of the table. Each table is equipped with a rubber sheet to protect the universal circuit board and the desktop (if you need to place a motor, solder, etc. on it). There are component storage cabinets under the table where components are placed. ( Teaching Equipment | Teaching Instruments )
2.Experimental table: 12 in total, each student is equipped with 1 experimental operation table

3, teaching platform: 1 teaching platform, each control the power of 12 students, the universal circuit board demonstration screen stands on the experimental table, size 150x7Ocm, for explanation and demonstration

4.Equipment:

39 Class 1.5 pointer DC ammeters, 26 180W three-phase motors, 26 time relays, 78 AC contactors, 13 Mf500 multimeters, 13 digital multimeters, 39 indicators, 52 travel switches, 78 controls Buttons, 13 reverse switches, 26 transformers, 13 three-phase double-throw switches, 13 three-phase switches, 13 sets of resistors, potentiometers, inductors, mutual inductors, diodes, triodes, FETs, integrated circuits, thyristors, logic level switches, logic level indicators and other component boxes (components are already installed in the component box), 91 integrated sockets, 39 current test sockets, 25 sets of soldering irons and soldering irons Rack, 13 sets of wire strippers, screwdrivers, needle nose pliers and other tools, 25 plastic stools.
5 , User-supplied equipment: double trace oscilloscope (no limit to model), power meter, slide-wire rheostat, millivolt meter

电工、模电、数电、电力拖动 实验设备

experimental project:

1. Electrician experiment content:

1. Use of electrical measuring instruments

2. Identification and detection of common components

3. Volt-ampere characteristics of linear and non-linear components

4. External characteristics of the power supply

5. Measurement of potential value and voltage value

6. Expansion of ammeter and voltmeter

7. Verification of Kirchhoff's Law 8. Verification of Lenz's Law 9. Verification of Superposition Principle and Reciprocity Theorem
10.Verification of Thevenin's Theorem and Norton's Theorem
11 , Equivalent transformation of voltage source and current source
12 , Research on Characteristics of Controlled Sources
13 , First-order circuit experiment
14.Transition of second-order circuits
15 , Investigate the characteristics of Lc components in DC and AC circuits
16.Conditions for maximum power

17 , Measurement of AC Circuit Parameters
18 , Characteristics of rLc element in sinusoidal AC
19 , rL flex on rc series circuit experiment
2O , rLc series resonance circuit
21 , Continuity and power of fluorescent lamp circuit
22 , Three-phase negative star delta connection
23 , Three-phase circuit and power measurement
Research on 24 , rc Frequency Selective Network
25 , Two-Port Network Research
26 , Single-phase transformer experiment
27. Mutual inductance circuit experiment
28 , Use and starting of three-phase asynchronous motor
29 , Basic circuit of electric contact control for three-phase motor successor
30 , Three-phase motor y- △ starting control experiment
31 , Sequence control experiment of three-phase motor
32 , Three-phase motor energy braking control experiment

2. Electronic experiment content

1.Simulate some experiments

1.The forward and reverse characteristics of the diode
2 , Input and output characteristics of the transistor
3 , transistor common emitter single tube amplifier
4 , Two-stage blocking off the amplifier circuit
5 , The effect of negative feedback on amplifier performance
6 , Field Effect Tube Amplifier
7 , Differential amplifier circuit
8 , Operational Amplifier Test
9 , Basic applications of integrated operational amplifiers (various analog operational circuits)
10 , Integrated Operational Amplifier Nonlinear Application (Various Waveform Generators)
11 , Transformer coupled push-pull power amplifier
12 , OtL power amplifier
13 , Integrated Power Amplifier
14 , Single-phase bridge rectifier circuit
15 , series transistor DC stabilized power supply (design experiment)
16 , Integrated DC spike voltage power supply
17 , Single Junction Transistor Characteristics
18 , Single junction transistor trigger circuit
19 , Simple test of thyristor
20 , Thyristor Controllable Rectifier Circuit

Using the above 20 experimental components can also complete the following experimental items

l , Voltage negative feedback bias circuit
2 , Voltage-divided current negative anti-debt bias circuit
3 , Determining the working point with a diode spike
4 , Common base amplifier circuit
5 , Common collector amplifier circuit
6 , Common source basic amplifier circuit
7 , Field-effect transistor common drain circuit
8 , Field effect transistor common gate circuit
9 , Single tube blocking amplifier circuit
10 , Transformer coupling amplifier circuit
11 , Class A power amplifier circuit
12 , Series current negative feedback circuit
13 , Series negative voltage feedback circuit
14 , Parallel voltage negative feedback circuit
15 , series transistor DC stabilized power supply (design experiment)
16 , Common base common emitter amplifier circuit
17 , Boot emitter output circuit
18 , NpN-pNp direct coupling amplifier circuit
19 , Eliminating self-excited root foil with negative feedback
20 , Transistor switching function
21 , Transformer feedback oscillation circuit
22 , Capacitor three-point oscillation circuit
23 , Inductive three-point oscillation circuit
24 , Basic form of differential amplifier circuit
25 , Long tail differential amplifier circuit
26 , Dual power long tail differential amplifier circuit
27 , Op Amps for AC Scale Up
28 , Inverting input protection measures
29 , In-phase input protection measures
30 , Protection of wrong polarity of power supply
31 , rc high-pass circuit
32 , Using Triodes to Protect Devices
33 , Differential input arithmetic circuit
34 , Fast Integral Circuit
35 , Simulation of first-order differential equation circuits
36 , Simulating second-order differential equation circuits
37 , Basic Logarithmic Operation Circuit
38 , Practical Differential Circuit
39 , Basic Circuit of Anti-Amplification
40 , Simple zero-crossing comparison circuit

41 , Using a diode as the upper limit detection amplitude selection circuit
42 , Lower limit selection circuit
43 , rc passive network low-pass filter circuit
44 , Non-inverting input first-order low-pass filter circuit
45 , Inverting input first-order low-pass filter circuit
46 , Simple second-order rc filter circuit
47 , Typical second-order rc active low-pass filter circuit
48. Typical Second-Order High-Pass Active Filter Circuit
49 , Basic Band Pass Filter Circuit
50 , Typical Band Pass Filter Circuit
51 , rectangular wave oscillation circuit
52 , Width adjustable rectangular wave generator
53 , Amplitude-frequency adjustable sawtooth wave generator
54 , Single-phase half-wave rectifier circuit
55 , Single-phase full-wave rectifier circuit
56 , Capacitor filter circuit
57 , Capacitive filter with resistive load
58 , rc filter circuit
59 , Basic Lc Filter Circuit
60 , Double voltage rectifier circuit
61 , triple voltage rectifier circuit
62 , Basic voltage regulator circuit
63. Basic pass tube regulator circuit
64 , Regulator circuit with amplification link
65 , Single-phase half-wave thyristor rectifier
66 , Electronic voltage regulating circuit
67 , Electronic hypnosis
68 , Electronic doorbell circuit one interesting experiment two
69 , Electronic alarm circuit one interesting experiment three
15 , Parallel current negative feedback circuit

2. Digital part experiment

l , ttL parameter test
2. Parameter test of cMOS logic gate
3. Application of ttL integrated electrode open circuit gate and tri-state output gate
4 , AND, NOT , OR, NAND gate circuit experiment
5 , Half Adder Circuit Experiment
6 , Full adder circuit experiment
7. rS trigger experiment
8. d trigger experiment
9. jk trigger experiment
iO , t trigger experiment
11. jk-type trigger to d-type trigger
12 , d-type trigger into jk trigger
l3. Counter experiment
14 , MSi shift register and its application
15 , Decoder and Transformation
16 , MSi Data Selector and Logic Design
17 , differential monostable circuit
18 , Ring Multiple Resonator
19 , Encoder, distributor, selector using gate circuit
20 , Design of Combination Circuit
twenty one. Design of combination circuit 211 display circuit
22 , Design of Synchronous Sequence Circuit
23 , Design of Computer Sequential Circuits
24 , Integrated Timer Test and Application
25 , cMOS integrated a / d, d / a conversion circuit experiment
26 , Diode NOT gate , NOR gate circuit
27. Triode NOT gate, NAND gate, or NOR gate circuit
28. Asynchronous Decimal Subtraction Counter
29 , Asynchronous Decimal Addition Counter
30 , Comprehensive ability training experiment-electronic stopwatch

4.Electric drag experiment


1.Blade knife switch forward control circuit
2 , Contactor jog forward control circuit
3.Forward rotation control circuit with self-locking
4 , Forward control circuit with over-search protection
6.Forward and reverse control circuit of contactor interlock
7 , Forward and reverse control circuit of button interlock
8.Push contactor compound interlock control circuit
9 , Automatic round trip control circuit
10 , Contactor Controlled Series Resistance Buck Start Line
11 , Time relay control series resistance step-down control circuit
12 , Manual y / △ step-down start
13 , Contactor control y / △ step-down start
14 , Time relay control y / △ step-down start

15 , Qx3-13 type y / △ automatic start control circuit
16 , Half-wave rectified energy consumption braking control circuit
17 , Full-wave rectification energy consumption braking control circuit
18 , c620 lathe electrical control circuit
20 , Single-phase running reverse brake control circuit
21 , Electric hoist electric control circuit
22 , c6163 lathe electrical control circuit
23 , Control circuit interlock control circuit
24 , Main circuit interlocking control circuit

Fourth, the main technical indicators of the test bench:

● .Power and parameters

Input power: three-phase four-wire power supply, the indicator lights when input

The power output has secondary protection function of fuse and leakage protection switch.

Group A: single and three-phase adjustable AC power supply, providing three-phase 0 ~ 430V continuously adjustable AC power supply, and 0-250V single-phase adjustable power supply (equipped with a 1.5kVa three-phase self-regulating voltage regulator It is equipped with three pointer AC voltmeters to indicate the output voltage of the regulator.

Group b: The low voltage AC voltage is adjustable from 3 to 24V in seven steps, and the maximum output current is 1.5a, as indicated by the ammeter.

Group c: low voltage DC stabilized power supply, voltage 5V, current 0.5a, indicated by ammeter.

Group d: dual-channel steady-current regulated power supply, both output voltages are 0-30V, continuously adjusted by multi-map potentiometer, the maximum output current is 1.5a, each power output has a 0.5 level digital ammeter and voltmeter indication. Voltage spike pressure <10-2, load spike constant <10-2, ripple voltage: <5mv.

Group e: single-phase AC mains output for users to prepare their own equipment.

● .Function signal generator:

Waveform: sine wave, triangle wave, square wave pulse wave, sawtooth wave, ttL square wave.

Frequency range: from 0.1hz to 2Mhz, divided into seven frequency steps.

Sine wave distortion: 10-30hz <3% 30hz-10Okhz≤1%

Square wave response: leading edge / back edge≤100nS (open circuit)

Maximum output amplitude (open circuit): f <lMhz amplitude ≤2OVp-p l <mf≤2Mhz amplitude ≤l6Vp-p

DC bias (open circuit): \ lOV

Output impedance z: zO = 50Ω \ 5Ω

Duty cycle: The rising and falling edges of the pulse and sawtooth wave can be continuously changed, ranging from 10% to 90%.

When the voltage-controlled oscillation (Vcf) plus an external DC voltage of 0 \ 5V changes, the corresponding frequency change is greater than l00 , 1.

Output attenuation: 2Odb 4Odb 6Odb

●. Frequency counter:

Frequency measurement range: lhz ~ lOOMhz.

Gate time: 0.01S, 0.1S, 1S, 10S

Input impedance (AC coupling): The resistance component is about 500kΩ, and the parallel capacitance is about 100p.

Secondary pulse: A pair of positive and negative pulses can be output each time.

Audio power amplifier: the input audio voltage is not lower than 10mV, the output power is not lower than lW, the volume is adjustable, there is a speaker, which is used to amplify the sound of the circuit, and can also be used as signal handwriting

Seven-segment decoder (the complete set of electrical laboratory equipment does not have this function): 3 sets of seven-segment decoding and corresponding decoding display digital tubes.

AC and DC dual-use ammeter for external measurement: accuracy class 0.5, three and a half digital display, measuring range: 0 ~ 1000ma

External test AC / DC dual-use voltmeter: 0.5 level accuracy, three and a half digital display, measurement range: 0 ~ 99.9V.

● 、 Experimental operation table:
Made of double-sided decorative panel, no deformation and no fading, size: 160x70x8Ocm, beautiful appearance, drawer storage tools in the middle, two left and right storage cabinets for storing components.

● Insulation resistance:> 5MΩ

● Leakage protection: leakage current 3Oma

Features and benefits:

At present, most domestic schools' electrical, analog, digital circuits, and electrical control experiments are mostly separate. Some schools also make various types of experimental equipment according to teaching requirements. Due to the small amount of work, they are limited by their processing capabilities and processing technology. Rough, incomplete functions, can not meet the requirements of the experiment, is prone to personal and equipment accidents, and has a large number of experimental components that are difficult to purchase and difficult to manage, and it is difficult to run the experiments specified in the experimental outline. Based on this, our factory develops this series of products by absorbing the advantages of similar products from Germany and China, combining with the requirements of China's higher education and vocational education syllabus.
The test bench has relatively complete safety protection measures and complete functions. The center of the experimental operating table is equipped with a universal circuit plug. The circuit board is injection molded. The surface is evenly distributed with nine holes to form a set of interconnected jacks. The component box is randomly inserted into the experimental circuit. The component box body is transparent. Intuitive, the box cover is printed with the symbol of the element that never fades, and the lines are clear and beautiful. The box body and the box cover adopt a more scientific press card structure, which is convenient for maintenance and replacement of components. The components are placed in the left and right cabinets below the experimental operation table, which is convenient for storage during the experiment, which greatly improves the management level and the degree of planning, which greatly reduces the teacher's experiment preparation work.
This equipment is suitable for colleges and universities, technical secondary schools, technical schools, and vocational schools with higher requirements. It can complete courses such as electrical engineering, electrical engineering principles, circuit analysis, analog electronic technology, teaching word circuits, and electrical control equipment. This equipment is an ideal product for the replacement of existing laboratory equipment or the construction of new or expanded laboratories. Its equipment is an important mark of the school's level and grade.

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