通用电工实验室设备（多媒体电脑演示)-实训设备|教学设备|实验室设备|上海科荣科教设备有限公司

KRA-18A 通用电工实验室设备（多媒体电脑演示）

该设备可完成电工学、电工原理、电子技术实验等电类课程300多项实验，所有的实验元件均已装在元件盒上，实验时把元件盒插入通用多孔万能板上，实验电路组合灵活，拼插任意。同一实验有多种布局，有效提高动手能力。采用透明元件盒体，内装元件一目了然，更换元件时可把盒盖打开，维修方便。
● 研制本产品的目的：
　　目前，国内各类学校电工、电子实验设备大多是分体的，也有部分学校根据教学要求自制了各种形式的实验台或实验箱，由于加工量少，受自身加工能力的限制，加工工艺粗糙，功能不全，满足不了实验要求，也容易发生人身及设备事故，且实验元器件繁多难以购置、难以管理，很难开出实验大纲规定的实验。
● 本产品的特点：
　　实验台具有较完善的安全保护措施，较齐全的功能（详见实验台结构简介）。实验台桌中央配有通用电路板，电路板注塑而成，表面布有九孔成一组相互联通的插孔，元件盒在其上任意拼插成实验电路，元件盒盒体透明，直观性好，盒盖印有永不褪色元件符号，线条清晰美观。盒体与盒盖采用较科学的压卡式结构，维修拆装方便。元器件放置在实验桌下边左右柜内，大大提高了管理水平，规划化程度，大大减轻了教师实验准备工作。
● 适用范围：
　　适用于高等、中等、职校及技校电工学、电工原理、电子技术等课程实验。可完成交直流、振荡、磁路电路，运算放大器、整流电路，交直流放大电路，数字逻辑电路等电路实验。该设备是现有实验室设备的更新换代或新建、扩建实验室的理想产品。它的配备是学校上水平、上等级的重要标志。
大减轻了教师实验准备工作。
特别配置:
一、电工、电子、电拖教师示教台配备便携式设
　　计开发实验箱一只
二、实验演示与故障排除软件一套
三、新增电子设计实训开发实验
1. 十字路口红绿灯
2. 抢答器设计
3. 倒计时间表设计
4. 标准时钟设计
5. 移动指示灯设计
6. 温度频率转换器设计
7. 光亮度频率转换器设计
8. 液体监控报警器
9. 函数发生器设计
10. 四位A/D转换器

● 三套实验室设备的实验台及操作桌结构相同：电工、电子、电拖实验室设备的实验台及操作桌结构相同）

l、实验台外壳规格:1230×350×200mm
2、三相保险座
3、三相电源输入指标
4、总开关:实验电源总开关、带漏电过载保
5、试验按钮:试验漏电开关漏电功能
6、电源输入指示l只
7、电源输出指示3只(红、绿、黄三色)
8、交流电压表:指示输出线电压
9、电压转换开关:与电压表配合使用，监示
　　输出线电压的大小与对称情况
10、接线座5只:A单元三相四线及地线输出
l1、电流表:W相电流输出指示
12、四插座:A单元三相四线电源输出
13、接线座2只:B单元交流低压电源输出
14、电表（2A）:B单元交流电流指示
15、旋钮:B单元3-24V电压输出选择
16、开关:C单元双路直流稳压电源开关
17、旋钮:C单元双路Ⅰ路稳流调节
18、旋钮:C单元双路Ⅱ路稳压调节
19、接线座2只:C单元Ⅰ路直流稳压输出
20、保险座:C单元双路稳压电源保险
21、电表4只:双路稳压电源电压、电流指示
22、接线座:D单元直流5V稳压输出
23、电表:D单元电流0·5A输出指示
24、开关1:控制各低压交流电、信号源
25、开关2:控制E单元交直流调压电源
26、电表:E单元交流电压输出指示

27、接线座4只:E单元交流、直流输出口
28、旋钮:E单元0一240V电压调节
29、插座:G单元220V输出插座
30、旋钮:音频功率放大器音量调节
31、接线座2只:音频信号输入
32、按钮:单次脉冲使能开关
33、接线座3只:单次脉冲输出口
34、电表:函数发生器正弦波输出电压指示
35、旋钮:正弦波输出三级衰减幅度粗调
36、旋钮:正弦波输出辐度细调
37、接线座:正弦波输出口
38、旋钮:矩形波输出幅度调节
39、接线座:三角波输出口
40、旋钮：函数信号发生器频率细调
41、接线座;矩形波输出口
42、旋纽：函数信号发生器频率五级粗调
43、电表:函数发生器输出频率指示
44、万用表:500型
45、实验桌面尺寸1600×7O0mm
46、通用电路板:规格350×900mm，元件盒在
　　其上任意拼插进行实验
47、储存板:放置元件盒
48、左储存柜:放置储存板（带门锁)
49、抽屉：放置常用工具
50、右储存柜：放置储存板(带门锁)
51、示波器：型号不限（用户自备）
52、工具

● 实验台主要技术指标：
　一、输入工作电源：三相四线
　二、输出电源及信号

l、A单元:三相四线
　　 2、B单元:交流3、6、9、12、15、18、24V
　　 3、C单元:双路稳流稳压电源（具有过载及短路保护功能），二路输出电压均为0一30V，
　　　由多圈电位器连续调节，输出最大电流为2A。电压稳定度:<10-2 负载稳定度: <10-2
　　　纹波电压: <5mV。
　　 4、D单元:直流稳压5V，电流0.5A
　　 5、E单元:直立流电压0－240V连续可调，电流2A
　　 6、F单元:220V电压输出，供外接仪器使用。

三、单次脉冲源：
　　 1、每拨一次钮子开关可输出一对正负脉冲
四、函数信号发生器（正弦波、三角波、矩形波）

　 1、频率范围:5Hz一55OKHz分五个频段
　　 2、频率指示:由Hz表直接读出
　　 3、电压输出范围:正弦波:5Hz-25OKH>4.5V、25OKHz-55OKHz>3.5V
　　　　　　　　　　三级衰减:Odb、2Odh、4Od具有连续细调
　　　　　　　　　　矩形波:5Hz-25OKHz>4.5V、25OHHz-55OKHz>3.55V，幅度连续可调
　　　　　　　　　　三角波:5Hz-55OKHz>lV

五、音频功率放大器：
输入音频电压不低于10mv，输出功率不小于1W，音量可调，内有喇叭，用于放大器电路扩音，也可作信号寻迹仪器使用。

六、绝缘电阻： > 5MΩ

七、漏电保护：漏电动作电流≤30mA

●设备结构、配备及实验项目
　一、结构与配备(二十四座为例)

(一)、实验桌：
12台学生实验桌，一桌两座，实验桌外形尺寸：160×70×80cm。桌子中央配置电路板（尺寸：35×90cm），根据实验电路在其上任意拼插元件盒成实验电路。元件盒盒体透明直观，内装元件一目了然，盒盖印有永不褪色元件符号，线条清晰美观，盒盖与盒体采用压卡式，维修拆装方便。每张实验桌配有一粒胶皮板，保护通用电路板与桌面（如需要在桌面放置电动机，焊接等）。桌子下部是元件储存柜，放置实验元件。
（二）、示教台桌：
　 1台示教台桌，分别控制12台学生台桌的电源。通用电路板演示屏立在实验台上，尺寸为160×70cm。用于讲解、演示。
（三）、实验台：
共13台，学生实验桌及示教台桌上各配备1台。
（四）、器材配备：
　 13台三相电动机，26只时间继电器，26只热继电器，78只交流接触器，117只交直流电表，13只万用表，13套剥线钳、尖嘴钳、螺丝刀等工具，13套实验所需的电阻、电位器、电感、电容、变压器、条形磁铁等元件单元盒（元件已装在单元盒内）。
（五）、用户自备器材：
1、示波器（型号不限）2、晶体管毫伏表3、功率表 4、滑线变阻器

二、实验项目

1、电工测量仪表的使用
2、常用元件的识别与检测
3、线性元件与非线性元件的伏安特性
4、电源的外特性
5、电位值、电压值的测定
6、电流表和电压表的扩程
7、基尔霍夫定律的验证
8、孔验征楞次定律
9、迭加原理与互易定理的验证
10、戴维南定理与诺顿定理的验征 11、电压源与电流源的等效变换
12、受控源特性的研究
13、一阶电路实验
14、二阶电路的过渡过程
15、研究LC元件在直流和交流电路中的特性
16、负载获得最大功率的条件

17、交流电路参数的测量
18、正弦交流电路中RLC元件的特性
19、RL及RC串联电路实验
2O、RLC串联谐振电路
21、日光灯电路的连接及功率因数改善
22、相负载的星、三角接法
23、三相电路及功率的测量
24、R-C选频网络的研究
25、二瑞口网络研究
26、单相变压器实验
27、互感电路实验
28、三相异步电动机的使用与起动
29、三相电动机继电接触控制的基本电路
30、三相电动机Y一△起动控制实验
31、三相电动机的顺序控制实验
32、三相电动机能耙制动控制实验

利用上述32项实验的元器件也可完成下面电路实验

33、最简单的电路
34、电路中各点电位与参考点的选择
35、电阻的串联
36、电阻的并联
37、电阻的混联
38、电阻分压器电路
39、全电路欧姆定律
40、电桥的应用与平衡条件
41、节点电压法
42、回路电压法
43、支路电流法
44、RCL并联电路
45、串联电路
46、变压器结构及工作原理
47、基尔霍夫第一定律
48、基尔霍夫第二定律
49、日光灯电路原理
50、扩大电压表量程
51、扩大电流表量程
52、RC电路的过度过程
53、RL过滤过程
54、电容的串联电路
55、电容的并联电路

56、电容器的充放电
57、电容器在交直流中的作用
58、条形磁铁在线圈中的运动
59、电容的混联
60、纯电阻·电感、电容电路
61、磁耦合线圈的顺串
62、磁耦合线圈的反串
63、欧姆表的工作原理
64、双联开关二地控制
65、用示波器观察磁滞回线
66、磁路欧姆定律
67、两线圈的互感及同名端
68、互感耦合
69、提高功率因数的方法
70、单相电路功率的测量
71、收录机电源电路
72、滤波电路
73、电阻与温度的关系:用伏安法测出灯丝
　　在不同电压下的阻值。
74、三相异步电机闸刀控制正转实验
75、具有过载保护的控制线略
76、按钮控制的正反转控制线路
77、接触器控制星一三角降压起动控制线路

KRA-18A GM electrician laboratory equipment (multimedia computer presentation)

equipped with the most complete electrical and electronic equipment of the new product. Complete electrotechnics, electrical theory, experiment, and other electronic technology - Courses over 300 experiments, all the experimental devices have been installed in the box components, the components experiments abalone omnipotent box insert GM board, a flexible combination of experimental circuits, fight interpolation arbitrary. The same experiment with a variety of layout, and effectively improve the practical ability. Using transparent components box, the contents components can be clearly seen on the replacement of components can open the lid and maintenance convenience.
● Development of the purpose of this product:
At present, the domestic types of schools electrician, electronic test equipment at most of the body, some schools in teaching demands made in various forms of experimental test-bed or box, because less processing by its own processing capacity constraints, processing crude, dysfunction, failed to meet the test requirements, personal and equipment also prone to accidents, and numerous experimental components to purchase, difficult to manage, it is difficult to test out the outline provisions experiment. Based on this, I learned German plant of similar products and the advantages of the domestic light of China's higher education, vocational education curriculum requirements developed this product.
● The product features:
Experimental Taiwan has better security protection measures, more complete function (see test-bed structure profiles). Test-bed tables with a common central circuit board, board injection from the surface of containing abalone into a group of mutual Unicom jack, component box on arbitrary in its fight inserted into experimental circuits, components box box transparent, intuitive, and the lid will never fade bearing components symbols, lines clear aesthetic. Box with lid to use more scientific pressure style structure, maintenance removable convenience. Experimental components placed in a drawer about The above table, greatly improving the management level, the degree of planning, greatly reduce the teachers experimental preparations.
● scope of application:
Apply to higher, intermediate, vocational school and technical school electrotechnics, electrical theory, experimental electronic technology, and other courses. AC-DC to be completed, the oscillation, magnetic circuit circuit operational amplifier, rectifier circuits, AC-DC amplification circuits, digital logic circuits, such as circuit experiment. The device is the upgrading of the existing laboratory equipment or newly built, expanded, the ideal laboratory products. It is equipped with the level of school, grade A an important indicator.
The experimental reduced teacher preparations.
Special configuration:
One, electrical, electronic, electric tractors teachers teaching units equipped with a portable
Development of a test box
Second, experimental demonstration of a set of software and troubleshooting
Third, the development of new electronic design experiments Training
1. Traffic lights at a crossroads
2. Responder design
3. The countdown timetable for the design calculation
4. Standard Clock Design
5. Mobile lamp design
6. Temperature frequency converter design
7. Brightness frequency converter design
8. Liquid Control Alarm
9. Function Generator Design
10. The four A / D converters

● three sets of laboratory equipment and the operation of test-bed structure of the same table: electrician, electronics, laboratory equipment, trailers and the operation of the test-bed structure of the same table)
L, test-bed shell specifications: 1230 × 350 × 200mm
2, three-phase insurance Block
3, 3-phase power input indicators
4, master switch: The power supply master switch, a belt containing leakage -
5, Test button: Test leakage switch leakage function
6, power input only instructions l
7, power output instructions three (red, green, yellow color)
8, AC voltage table: instructions output voltage line
9, voltage switch: the voltage used in conjunction with a table, showing supervisor
Output voltage line with the size of symmetric situation
10, wiring Block 5: A three-phase four-unit output and ground wire
L1, ammeter: W output phase current instructions
12, 4 sockets: A four-unit three-phase power supply output
13, wiring Block 2: B exchange low-voltage power supply unit output
14, and electricity meters (2A): B cell current exchange instructions
15, knobs: B modules 3-24 V voltage output options
16, Switches: C modules dual DC voltage regulator power switch
17, knobs: C modules dual Ⅰ Road steady flow conditioning
18, knobs: C II Road regulator modules dual regulation
19, wiring Block 2: C modules Ⅰ Road output DC voltage regulator
20, insurance Block: C dual voltage regulator power supply modules insurance
21, meters, 4: dual power supply voltage, current instructions
22, wiring Block: D unit output DC 5 V regulator
23, and electricity meters: D unit Current 0 5A output instructions
24, switch 1: control of the low-voltage alternating current, signal source
25, switch 2: E unit control AC-DC Power Surge
26, and electricity meters: E unit AC voltage output instructions 27, wiring Block 4: E unit exchanges, DC output
28, rotary button: E unit 0 a 240 V voltage regulator
29, socket: G Unit 220 V output sockets
30, rotary button: audio power amplifier volume adjustment
31, wiring Block 2: audio signal input
32, the button: single pulse so that it can switch
33, wiring Block 3: single pulse output
34, meters: sine wave function generator output voltage instructions
35, rotary button: sine wave output attenuation rate of coarse-3
36, rotary button: sine wave output to fine-tune the degree of convergence
37, wiring Block: sine wave output
38, rotary button: rectangular wave output rate regulation
39, wiring Block: triangular wave output
40, rotary button: function to fine-tune the frequency signal generator
41, wiring Block; Rectangular wave output
42, rotary button: function signal generator frequency rough-5
43, and electricity meters: Function Generator output frequency instructions
44, Multimeter: 500
45, experimental desktop size 1600 × 7O0mm
46 GM board: standard 350 × 900mm, components in the box
Arbitrary fight inserted its experiment
47, storage plate: placing components Box
48, left store counters: placing storage plate (with locks)
49, drawer: place commonly used tools
50, and the right store counters: placing storage plate (with locks)
51, Oscilloscope: Open-type (user-owned)
52, tools
● test-bed main technical indicators:
First, input power: three-phase four -
Second, the output power and signal

L, A unit: three-phase four -
2, B modules: exchange 3,6,9,12,15,18,24 V
3, C modules: dual steady flow regulator power supply (with overload and short circuit protection), 2P output voltages are 0 to 30 V,
The multi-turn potentiometer for conditioning, maximum current output for 2A. Voltage Stability: <10-2 load stability: <10-2
Ripple voltage: <5mV.
4, D unit: DC regulator 5 V, current 0.5 A
5, E modules: vertical flow adjustable voltage 0-240 V continuous current 2A
6, F modules: 220 V voltage outputs for external equipment use.

Third, single-pulse sources:
1, each allocation of a button switches can be a positive and negative pulse output
4. Function signal generator (sine, triangle wave, rectangular wave)
1, the frequency range: 5 Hz一55 OKHz divided into five bands
2, the frequency of instruction: directly from the table to read out Hz
3, the output voltage range: sine wave: 5 Hz - 25OKH> 4.5V, 25OKHz - 55OKHz> 3.5V
Three attenuation: Odb, 2Odh, 4Od with continuous fine-tune
Rectangular wave: 5 Hz - 25OKHz> 4.5V, 25OHHz - 55OKHz> 3.55V, continuous adjustable rate
Triangular wave: 5 Hz - 55OKHz> lV

5, audio power amplifier:
Audio input voltage of not less than 10 mv output power of not less than 1 W, adjustable volume, with speakers, amplifier for amplifying circuit can also signal tracing equipment for use.
6, insulation resistance:> 5M Ω
7. Leakage protection: leakage current less than 30 mA action
● equipment structure, and with pilot projects
First, structures and equipment (24 for example)
(1), laboratory tables:
12 students experiment tables, the Set of two experimental tables external dimensions: 160 × 70 × 80cm. Table central configuration circuit board (size: 35 × 90cm), according to the experimental circuits on arbitrary in its fight boxes inserted into experimental circuit components. Components box transparent intuitive box, the contents components can be clearly seen lid and India have never faded components symbols, lines clear aesthetic, with the lid of the box using pressure card, maintenance removable convenience. Each experiment tables equipped with a rubber plate, the protection circuit board and general desktop (if required in the desktop placed Motor, welding, etc.). The table below is the storage component counters, placed experimental components.
(2), showing the Taiwan table:
1 Taiwan teaching Taiwan tables, respectively control 12 students Taiwan tables of power. GM board legislation in the experimental demonstration of the stage screen, measuring 160 × 70cm. To explain, presentations.
(C), experimental stations:
A total of 13 units, students experiment tables and various teaching units equipped with a Taiwan table.
(4), equipment with:
13 units three-phase motors, 26 hours relays, 26 thermal relays, 78 exchanges and contacts, 117 TAC DC Table, 13 multimeter, 13 sets of stripping wire pliers and top mouth pliers, screwdrivers and other tools, 13 sets of experiments necessary resistance, potentiometer, inductors , capacitors, transformers, magnets and other components unit strip box (component has been installed in the unit placed inside the box).
(5), user-owned equipment:
1, oscilloscope (model limited) 2, transistors millivolt Table 3, Power Table 4, Waterloo line rheostat

Second, experimental projects
1, the use of Electrical Measurement Instrument
2, used the identification and detection devices
3, linear and nonlinear components of components voltammetry
4, the characteristics of the power supply
5, the potential value of the voltage value of
6, ammeter, and the expansion-Voltage Meter
7, Kirchhoff's law certification
8, holes mortem levy Lenz's Law
9, the principle of superposition and certification reciprocity theorem
10, Norton theorem Thevenin's theorem and the post-mortem levy 11, voltage and current source of the equivalent transformation
12, controlled source of research
13, a band circuit experiment
14, the Second Circuit transition process
15, Research LC components in the DC Circuit and the exchange of
16, was negative for the maximum power of the conditions 17, the measurement circuit parameters exchange
18, sine exchange RLC components in the circuit characteristics
19, RL and RC series circuit experiment
2 O, RLC series resonant circuit
21, fluorescent circuit connections and power factor improvement
22, the star of the load, 1.30 Next Act
23, the three-phase circuit and power measurement
24, R-C network of selected frequency
25, the Swiss population research network
26, single-phase transformer experiment
27, mutual inductance circuit experiment
28, the use of three-phase asynchronous motors with starter
29, 3-phase motor control relay contact with the basic circuit
30, a three-phase motor Y △ Starting Control Experiment
31, the order of three-phase motor control experiment
32, three-phase motors can rake Brake Control Experiment
Use of these 32 experiments can be completed the following components circuit experiment
33, the simplest circuit
34, Circuit points potential and the choice of reference point
35, the series resistance
36, the parallel resistance
37, Resistance Hybrid
38, resistor divider circuits
39, the entire circuit Ohm's law
40, Bridge Application and balance conditions
41, node voltage Law
42, loop voltage Law
43, slip Current law
44, RCL parallel circuit
45, Series circuit
46, transformers structure and working principle
47, the first law Kirchhoff
48, Kirchhoff Second Law
49, fluorescent circuit principle
50, expanding voltage meter range
51, expanding range ammeter
52, RC circuit over the course
53, RL filtration process
54, the series circuit capacitance
55, capacitor parallel circuit 56, the charge and discharge capacitors
57, AC-DC capacitor in the role of
58, bar magnet coils in the campaign
59, capacitor Hybrid
60, pure resistance inductance, capacitance circuit
61, the magnetic coupling coil-Series
62, the magnetic coupling coil reverse Series
63, the working principle of Ohm Table
64, the double-switch control
65, with oscilloscope observed hysteresis loop
66, magnetic circuit Ohm's law
67, the two coils of the same name - and mutual inductance
68, mutual inductance coupling
69, improve power factor method
70, single-phase power measurement circuit
71, and hand power circuit
72, filter circuit
73, the relationship between resistance and temperature: measured filament voltammetry
The different voltage resistance.
74, three-phase induction motor control switch is to experiment
75, a slightly Overload Protection of the Line of Control
76, the button negative to the positive control of the control circuit
77, contactor control of a triangular buck Star starter control circuit