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The document discusses several ways that an office space can reduce electricity usage and improve efficiency. It notes that natural daylight is not fully utilized, emergency lighting stays on all day, and lights are often left on in unused areas. It also points out issues like items stacked near electrical panels and transformers, and leaks and spills observed around backup generators. Maintaining clear access and replacing batteries and parts regularly could help address these problems and reduce wasteful energy use.
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The document provides tips for smartly using electrical components to save energy and money. It explains how electricity is delivered through the main electric supply, circuit breakers, fuses and meters. It recommends turning off switches when devices are not in use, as switches control electricity flow like taps control water flow. Proper use will save energy. Live wires should never be touched directly and safety precautions should be taken when using plugs. Batteries have positive and negative terminals and less energy consumed means lower utility costs.
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Presentation of automatic street light
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The document provides tips for smartly using electrical components to save energy and money. It explains how electricity is delivered through the main electric supply, circuit breakers, fuses and meters. It recommends turning off switches when devices are not in use, as switches control electricity flow like taps control water flow. Proper use will save energy. Live wires should never be touched directly and safety precautions should be taken when using plugs. Batteries have positive and negative terminals and less energy consumed means lower utility costs.
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This seminar report summarizes an automatic street light system that uses an LDR (light dependent resistor) and transistor circuit to automatically turn street lights on at nightfall and off at dawn, saving energy. The main components are an LDR, transistor, resistor, LED, battery, and PCB board. The LDR detects low light levels and allows current to flow through the transistor, powering the LED light. Potential advantages include energy savings, low cost, safety and security from automated operation. Disadvantages include limited power and the light turning on in shadows. It has applications for street and domestic lighting and could save 77-81% of power consumption for street lighting.
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The document presents a smart street light system that uses sensors to detect vehicles and adjusts street light brightness accordingly to save energy. It aims to reduce wasted energy by turning lights off when no vehicles are present. The system uses IR sensors to detect vehicles, microcontrollers to control LED street lights, and PWM technique to dim lights to 10% intensity between vehicles. It is presented as an energy efficient and cost effective alternative to existing street light technologies.
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This document describes an automatic street light control circuit using an LDR (light dependent resistor). The circuit uses an LDR, resistors, capacitors, diodes, a transistor and relay to automatically turn on LED street lights when it gets dark. When the LDR detects a drop in light levels, it causes the transistor to switch on, powering the relay and turning on the lights. The circuit requires few components, consumes little power and provides an efficient automatic method for controlling street lights without manual operation.
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This document summarizes an automated light control system designed for offices. The system uses a light dependent resistor that detects changes in light levels and controls power to lights accordingly. When the LDR detects darkness, it decreases resistance and turns lights on through a relay. When light is detected, resistance increases and lights turn off. The system was tested and installed in offices at a polytechnic to automatically control lighting and conserve electricity. It provides automatic switching without manual operation and reduces energy costs compared to traditional lighting controls.
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This document describes an intelligent automatic street light control system using a light dependent resistor (LDR). The system uses an LDR to sense light levels and automatically control street lights. When it gets dark, the high resistance of the LDR causes a relay to energize, which switches on the street lights. When it gets bright, the low resistance of the LDR prevents the relay from energizing, keeping the lights off. This automatic system eliminates the need for manual monitoring of street lights and saves energy by only powering them when it is dark. Applications include street lights, outdoor security lighting, and more.
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This document describes an automatic street light control circuit using an LDR that turns lights on and off based on light levels. The circuit uses an LDR, resistors, capacitors, a transistor, and relay. When it gets dark, the resistance of the LDR decreases which causes the transistor to turn on and activate the relay, powering the street lights. When it gets light again, the LDR's resistance increases and the lights turn off. The circuit provides automatic light control with low power consumption.
Street light controllercircuit.ppt 3
This document describes a street light controller circuit that automatically turns street lights on at night and off during the day to reduce power consumption and costs. The circuit uses a light dependent resistor to sense light levels and control a relay that switches a 230V lamp. When it gets dark, the LDR resistance increases and the relay is energized, turning the lamp on. During the day when the LDR resistance decreases, the relay is de-energized and the lamp turns off. The circuit aims to eliminate the need for manual switching and reduce energy usage through automatic operation based on light levels.
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This document describes an automatic street light control circuit using an LDR (Light Dependent Resistor). The circuit uses an operational amplifier IC CA3140 to compare the voltage from a potential divider using the LDR and a variable resistor, to a fixed voltage from another potential divider. During the day when light falls on the LDR, its resistance is low and the LDR voltage is higher, turning the lights off. At night when resistance is high, the LDR voltage decreases below the fixed voltage, turning the lights on. The circuit automatically controls street lights based on ambient light levels measured by the LDR to efficiently use energy.
Equipower - Home voltage protector
This document discusses power protection solutions offered by Equipower that address worst case scenarios such as trees falling on overhead wires or accidental disconnects of the neutral line. Equipower provides 440V protection from issues caused by neutral open and double phasing conditions. Their comprehensive power protection devices act as insurance for electrical fluctuations that could damage appliances and electronics in homes and offices. They have provided solutions to various clients including banks, factories, and hospitals.
Automatic street lighting system
This document presents an automatic street lighting system that uses a light dependent resistor (LDR) and transistor to switch street lights on and off automatically based on sunlight levels. The system aims to reduce power wastage and physical efforts by automatically turning lights on when sunlight decreases and off when sunlight is detected. Key components include an LDR, transistor, LED lights, and other basic electrical elements. Advantages are energy savings and safety, while limitations include power capacity and sensitivity to shadows. Future improvements could adapt the design for commercial use and higher voltages.
Roca,gabriel geiee ipc
This document discusses several common electrical devices and materials used in residential, commercial, and industrial wiring:
A lamp holder supports and provides electrical connections for a lightbulb. A 3-way switch allows light control from two locations, like at the top and bottom of stairs. A junction box protects connections where wires join, removing the need to run wires directly back to the main panel. A circuit breaker automatically stops current flow as a safety measure. An electric meter measures the amount of energy consumed over time. And a convenience outlet mounted on a wall supplies power to lamps and appliances.
Power failure alert
This document describes a smart power failure alert device that monitors a main power supply and sends a message when the power cuts off. It uses a transformer to convert 240V AC to 12V AC, then a bridge rectifier converts it to 5V DC to power an Arduino board. The Arduino acts as a trigger to send a message via GSM module when power fails, alerting users remotely. This device is useful for monitoring critical systems like fish tanks or factory equipment and allows timely response to power issues.
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A clap switch circuit uses a condenser microphone, transistor, 555 timer IC, LED, and battery to turn on lights or appliances when it detects the sound of a clap. The microphone converts sound into an electrical signal that triggers the transistor and 555 timer IC, causing the LED to illuminate anything connected to the circuit like a light bulb. This provides a hands-free way to operate devices that can benefit elderly or mobility-impaired users.
report on rain alarm project
This project involves creating a rain alarm system that automatically closes plates when rain is detected to prevent materials from getting wet. The system uses a rain sensor connected to a 555 timer chip to trigger a buzzer when rain is detected. It is powered by a 9V battery and includes common electronic components like resistors, capacitors, and an NPN transistor. The project is designed to be low-cost and useful for protecting materials in homes and small businesses from rain damage and the negative effects of wet conditions.
Automatic street light
This document describes an automatic light circuit that uses a light dependent resistor to sense light levels and control a bulb. During the day, the LDR has low resistance which keeps a transistor off and the bulb off. At night, the LDR's resistance rises, turning the transistor on which activates a relay and turns the bulb on without needing a switch. It aims to prevent unnecessary energy loss by automatically turning lights on and off based on ambient light levels.
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This document proposes a project to generate electricity from speed breakers and footsteps. It would involve placing sensors on speed breakers and roads to capture the kinetic energy from passing vehicles and walking people. A prototype was built using piezo and force sensors connected to an Arduino board and LEDs. The project aims to provide a low-cost source of pollution-free electricity. It discusses components, circuit diagrams, code, and presents the project's second place win at a tech competition. The conclusion emphasizes the need for alternative energy sources like this to address future energy demands.
Auto Street lightning
This document presents an automatic street light circuit that uses an LDR (Light Dependent Resistor) and transistor to turn lights on and off automatically based on light levels. The main components are an LDR, transistor, resistor, LED, battery, and PCB board. When light falls on the LDR, its resistance decreases which prevents current from flowing through the transistor and turning on the LED light. At night when light levels drop, the LDR's resistance increases and allows current to flow, switching on the street light automatically. Key advantages are energy savings, low cost, safety and security from automated operation.
smart street light ppt
The document presents a smart street light system that uses sensors to detect vehicles and adjusts street light brightness accordingly to save energy. It aims to reduce wasted energy by turning lights off when no vehicles are present. The system uses IR sensors to detect vehicles, microcontrollers to control LED street lights, and PWM technique to dim lights to 10% intensity between vehicles. It is presented as an energy efficient and cost effective alternative to existing street light technologies.
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This document describes an automatic street light control circuit using an LDR (light dependent resistor). The circuit uses an LDR, resistors, capacitors, diodes, a transistor and relay to automatically turn on LED street lights when it gets dark. When the LDR detects a drop in light levels, it causes the transistor to switch on, powering the relay and turning on the lights. The circuit requires few components, consumes little power and provides an efficient automatic method for controlling street lights without manual operation.
AUTOMATED LIGHT CONTROL SYSTEM FOR OFFICES
This document summarizes an automated light control system designed for offices. The system uses a light dependent resistor that detects changes in light levels and controls power to lights accordingly. When the LDR detects darkness, it decreases resistance and turns lights on through a relay. When light is detected, resistance increases and lights turn off. The system was tested and installed in offices at a polytechnic to automatically control lighting and conserve electricity. It provides automatic switching without manual operation and reduces energy costs compared to traditional lighting controls.
Wk102 ppt 1-
This document describes an intelligent automatic street light control system using a light dependent resistor (LDR). The system uses an LDR to sense light levels and automatically control street lights. When it gets dark, the high resistance of the LDR causes a relay to energize, which switches on the street lights. When it gets bright, the low resistance of the LDR prevents the relay from energizing, keeping the lights off. This automatic system eliminates the need for manual monitoring of street lights and saves energy by only powering them when it is dark. Applications include street lights, outdoor security lighting, and more.
Automatic street light using ldr
This document describes an automatic street light control circuit using an LDR that turns lights on and off based on light levels. The circuit uses an LDR, resistors, capacitors, a transistor, and relay. When it gets dark, the resistance of the LDR decreases which causes the transistor to turn on and activate the relay, powering the street lights. When it gets light again, the LDR's resistance increases and the lights turn off. The circuit provides automatic light control with low power consumption.
Street light controllercircuit.ppt 3
This document describes a street light controller circuit that automatically turns street lights on at night and off during the day to reduce power consumption and costs. The circuit uses a light dependent resistor to sense light levels and control a relay that switches a 230V lamp. When it gets dark, the LDR resistance increases and the relay is energized, turning the lamp on. During the day when the LDR resistance decreases, the relay is de-energized and the lamp turns off. The circuit aims to eliminate the need for manual switching and reduce energy usage through automatic operation based on light levels.
Automatic street light control system
This document describes an automatic street light control system that uses a light dependent resistor and op-amp circuit to switch street lights on and off automatically based on light levels. It aims to reduce energy consumption by preventing lights from staying on during the day or taking too long to turn on at night. The system detects darkness and uses a relay to switch on lights without manual operation. It is powered by a 12V DC supply and can be modified to charge during the day using solar energy.
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This document proposes a multicell switched-inductor/switched-capacitor combined active network converter (MSL/SC-ANC) for high step-up voltage conversion with high efficiency. The MSL/SC-ANC structure combines the advantages of switched inductor cells, switched capacitor cells, and active networks to provide high voltage gain with low voltage and current stress on devices. It can achieve flexible voltage conversion by adjusting the number of switched inductor and capacitor cells. The proposed converter has applications in photovoltaics, fuel cells, and other areas requiring high voltage step-up conversion.
Ppt meg
This document describes a student project on an automatic street light control system using a real-time clock. The system uses a microcontroller and real-time clock to automatically switch street lights on and off based on scheduled times. It can reduce power wastage by precisely controlling lighting times. The project aims to automate street light control without human intervention for efficient and effective operation. Key components include an AT89S51 microcontroller, real-time clock, LCD display, TRIAC driver, and power supply. The system was tested and able to correctly switch lights according to the scheduled times. It has applications in areas requiring automated lighting control.
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Power generation through speed breaker and footsteps
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Reading involves comprehending the underlying thoughts and organization of ideas in a text through linguistic devices that create cohesion. While coherence refers to how well the ideas are structured, cohesion concerns the linguistic elements like word choice and grammar that help express the coherent thoughts in a way that can be understood. Together, coherence and cohesion allow readers to understand the intended meaning and value of a text.
Lane tech
Lane Tech High School is a selective enrollment public school in Chicago with over 4,000 students, most of whom are Hispanic or white. It has maintained an excellent academic standing with over 81% of students meeting standards from 2009 to 2010. The school offers a variety of sports for both boys and girls as well as grades 9 through 12. Students are required to take tests to be accepted as it considers 7th grade test scores and grades.
As media powerpoint
The document discusses how a media product represents social groups. It summarizes that the opening scene implies a death without actually showing it to set a dark tone. It includes children to add shock value and vulnerability, using a child in a threatening situation. It represents the males as threats to children but did not include women, feeling a child offered a more vulnerable role. It aims to portray the insecurity and fear of being in scary situations as a child through concealing threats until the end to build tension.
Innovatie in de Sierteelt & het Businessmodel, door Michel Haring, 16 nov 2011
'Green life sciences voor de regio'
Root words
This document discusses 5 root words - manu, mater, micro, ortho, and path - providing their definitions and examples for each. Manu means hand, mater means mother, micro means small, ortho means strait, and path means feeling or emotion. Examples are given for terms derived from each root word, such as manuscript, maternity, microscope, orthodontist, and empathy.
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O documento discute o grau superlativo dos adjetivos em inglês. Ele apresenta as regras para a formação do grau superlativo e exemplos de como usar adjetivos no grau superlativo. O documento também inclui exercícios para praticar o uso do grau superlativo.
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Grabbed early by vocabulary: Nation’s ongoing contributions to vocabulary
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Northern miner t&c for mobile employees - jan 2013 clean
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Coronado Corporate Presentation - September 2011 Rodman and Renshaw Conference
Coronado Corporate Presentation - September 2011 Rodman and Renshaw Conference
LifeTech Capital Updates NeoStem (NBS) Strong Buy $4.00 Target
LifeTech Capital Updates NeoStem (NBS) Strong Buy $4.00 Target
Innovatie in de Sierteelt & het Businessmodel, door Michel Haring, 16 nov 2011
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Similar to The Industry
Ppt on brake failure indicator.
This document describes a brake failure indicator circuit. The circuit uses a PNP transistor, buzzer, LEDs, resistors, battery, breadboard, capacitors and 555 timer. It monitors the brake wire for failure and alerts the driver with flashing lights and beeping if the brake fails. The circuit provides early warning of brake issues to help prevent accidents.
Conceptos En Ingles
Water is an important resource that is used for bathing, domestic use, and more but is being wasted. Some techniques to conserve water include fixing leaks, turning off taps when not in use, taking shorter showers, and repairing hoses. Practicing these simple techniques can help save water for the future. Other resources like energy can also be conserved through actions like using energy-efficient light bulbs, not leaving electronics plugged in when not charging, and watching TV together to reduce usage. Being mindful of conserving resources through small daily habits can help ensure they are available for the future and save money.
Conceptos En Ingles
Water is an important resource that is used for bathing, domestic use, and more but is being wasted. Some techniques to conserve water include fixing leaks, turning off taps when not in use, taking shorter showers, and repairing hoses. Practicing these simple techniques can help save water for the future. The document also discusses various appliances like lights, batteries, TVs, computers, and more that use energy and offers tips for conserving energy such as using energy efficient bulbs, not leaving devices on unnecessarily, and watching TV together. Making small changes in daily habits can help save both water and energy for a sustainable future.
CONCEPTOS EN INGLES
Water is an important resource that is used for bathing, domestic use, and more but is being wasted. Some techniques to conserve water include fixing leaks, turning off taps when not in use, taking shorter showers, and repairing hoses. Practicing these simple techniques can help save water for the future. Other resources like energy can also be conserved through actions like using energy-efficient light bulbs, not leaving electronics plugged in when not charging, and watching TV together to reduce usage. Being mindful of conserving resources through small daily habits can help ensure they are available for the future and save money.
Factory
The factory is experiencing some electrical issues including observed harmonics from a new transformer, an oil spill underneath transformers, and wire burnouts at electrical panels due to high summer temperatures. Proper maintenance is needed for the steam system to prevent heat loss, and lighting usage could be optimized by utilizing natural daylight and installing occupancy sensors and automatic switches. Senior management should encourage workers to turn off lights when not in use to save energy.
IRJET- Water Pump Controller using Arduino UNO
This document describes a water pump controller that uses an Arduino Uno board and temperature sensor to automatically control a water pump based on ambient temperature. The system prevents water pipes from freezing in cold climates by only allowing water to flow intermittently if the temperature drops below freezing. It uses an LM35 temperature sensor and LCD display connected to the Arduino board to monitor temperature and control a relay that switches the water pump on and off. The system provides easy access to water without requiring manual intervention to prevent pipes from freezing.
Ecosaversocket Presentation
The document summarizes the standby power problem and proposes a solution called the EcoSaverSocket. Billions of electronic appliances waste energy when in standby mode, emitting 68 million tons of CO2 annually. The EcoSaverSocket is an automatic, universal, and efficient device that can be used to switch appliances off when not in use, saving an estimated £900m in wasted UK electricity. It raises awareness of standby power waste and only uses 0.1 Watts in its low-power mode, making it one of the most efficient standby saving products available.
Build track wireless sensors overview
Wireless sensor technology provides a solution to automatically control switches and reduce energy bills by addressing challenges with traditional wired sensors. Wireless sensors do not require wiring, can control multiple devices from one sensor, and allow switches to still function even if a sensor fails. This makes wireless sensors more practical and convenient to install than wired sensors. They provide a quick payback typically within one year and are well-suited for situations with intermittent occupancy like offices, classrooms, and restrooms. Interested customers can contact Surmount Energy Solutions to purchase BuildTrack wireless sensors and start saving on energy costs.
BTech ECE project final report using Arduino
This is my original work. The notes I have made on some pages were learnt over time, you can incorporate them in your electronics hobbying (although this site is mostly used for copying projects and not learning haha). Feel free to use any part of the project.
Power backups
This presentation about the power backups to used in hotels for the big spaces, manufacturing factories, and warehouses. their capacity, process of installment.
AUTOMATIC RAIN ALARM SENSOR/ CONTINUITY TESTER
Rain Alarm Project is a simple but very useful project that detects Rain (Rain Water) and automatically triggers an alarm or buzzer. Water is a basic need in every one’s life. Saving water and proper usage of water is very important. Here is an easy project which will give the alarm when there is rain, so that we can make some actions for rain water harvesting and also save the rain water for using it later. With the help of saving this rain water through rain water harvesting, we can increase the levels of underground water by using underwater recharge technique. Rain water detector will detect the rain and make an alert; rain water detector is used in the irrigation field, home automation, communication, automobiles etc. Here is the simple and reliable circuit of rain water detector which can be constructed at low cost.
Subtech profile
This document discusses various electrical automation products and solutions provided by SUBTECH, including water level control systems, fire protection panels, power backup solutions, street light control panels, distribution panels, automatic power factor correction panels, automatic phase sequence panels, automatic mains failure panels, automatic changeover panels, submersible panels, battery chargers, and LED lighting solutions. Key features highlighted for each product include microprocessor control, modular design, powder coated enclosures, overload protection, energy saving capabilities, and the use of pre-magnetic contactors.
Synopsis for Public Garden automation with solar tracker by Punith urs
Brief principle for the working of solar tracking system.
Automaton of Public sector for efficient utilisation of energy.
ISAS system for transformer fire fighting
System ISAS is designed for emergency cooling and extinguishing fires on transformers using a technology spraying fine dispersed water. Neutral gas generators are used to create the effect of fine water and water mist.
Projects at home
Multiple projects done at home. Intelligent Geyser, Schumann Frequency Generator, Electronic Water Descaler, Tesla Coil Speaker and Custom workstation & Study table.
IRJET- Touch Dimmer Switch Circuit
This document describes a touch dimmer switch circuit that uses a touch sensor to control the brightness of a light. A touch sensor is connected to an Arduino microcontroller which uses pulse width modulation to vary the brightness of a light bulb connected to a transistor. When the touch sensor is touched, the Arduino detects the change in state of the sensor and drives the light bulb at different brightness levels depending on how long the sensor is touched. The circuit provides a simple way to control light brightness with a touch sensor instead of a traditional mechanical dimmer switch.
Single phase residual current breaker
Circuit breakers protect electrical circuits from excess current by interrupting the current flow, unlike fuses which must be replaced after blowing. This project measures current in a circuit using a current transformer and trips the circuit using a relay if the current exceeds a limit. A microcontroller monitors the current sensed by the analog-to-digital converter and triggers the relay when the limit is reached, cutting power to the load which in this case are light bulbs. An LCD display shows the current measurement.
Smoke Alarm using Photodiode
This document describes the design and operation of a smoke alarm circuit. The circuit uses a NE555 timer IC wired in astable configuration to generate an audible alarm signal through a speaker. A photo interrupter module acts as the smoke sensor, interrupting the light beam between an LED and phototransistor when smoke is detected. This causes the NE555 reset pin to activate the alarm. The circuit operates on 9V and components include resistors, capacitors, the NE555 IC, photo interrupter, and speaker. Instructions are provided for testing, troubleshooting, and applications of the smoke alarm circuit.
Lesson 7 protocols (processes) in making electrical gadgets final
The document provides safety protocols and instructions for making simple electrical gadgets and repairs, including turning off the power source before working, using insulated tools, and avoiding contact with energized circuits. Steps are outlined for creating an extension cord, and videos demonstrate proper techniques and safety precautions. Maintaining safety is emphasized as important for preventing accidents when working with electricity.
Won CII National Award 2015. BuildTrack Presentation on Wireless Sensors
BuildTrack won an award for their innovative wireless sensor product that automatically controls switches to reduce energy bills. Wireless sensors address challenges with wired sensors like wiring, sensor failure, and controlling multiple devices. The wireless sensors have no wiring needs, allow switches to work even if sensors fail, and let a single sensor control multiple switches and devices. This solution provides benefits like rapid deployment, maintained aesthetics, and payback in under one year, especially for spaces with intermittent occupancy like offices, classrooms, and restrooms. Interested customers can contact BuildTrack for a wireless sensor installation.
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Social media for business 一比一原版新西兰奥塔哥大学毕业证（otago毕业证）如何办理
一模一样【微信：A575476】【新西兰奥塔哥大学毕业证（otago毕业证）成绩单Offer】【微信：A575476】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：A575476】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：A575476】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
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The Industry
- 1. The Industry
- 2. Use of day light
- 8. Stacking near electrical panels
- 10. Transformer