Oscilloscope and Digital Voltmeter Essay Example for Free

Oscilloscope and Digital Voltmeter Essay A voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog to digital converter. Voltmeters are made in a wide range of styles. Instruments permanently mounted in a panel are used to monitor generators or other fixed apparatus. Portable instruments, usually equipped to also measure current and resistance in the form of a multimeter, are standard test instruments used in electrical and electronics work. Any measurement that can be converted to a voltage can be displayed on a meter that is suitably calibrated; for example, pressure, temperature, flow or level in a chemical process plant. General purpose analog voltmeters may have an accuracy of a few per cent of full scale, and are used with voltages from a fraction of a volt to several thousand volts. Digital meters can be made with high accuracy, typically better than 1%. Specially calibrated test instruments have higher accuracies, with laboratory instruments capable of measuring to accuracies of a few parts per million. Meters using amplifiers can measure tiny voltages of micro volts or less. Part of the problem of making an accurate voltmeter is that of calibration to check its accuracy. In laboratories, the Weston Cell is used as a standard voltage for precision work. Precision voltage references are available based on electronic circuits. and supply voltage variations. To ensure that a digital voltmeters reading is within the manufacturers specified tolerances, they should be periodically calibrated against a voltage standard such as the Weston cell. Digital voltmeters necessarily have input amplifiers, and, like vacuum tube voltmeters, generally have a constant input resistance of 10 megohms regardless of set measurement range. A digital voltmeter, or DVM, is used to take highly accurate voltage measurements. These instruments measure the electrical potential difference between two conductors in a circuit. DVMs are electric voltmeters, and the preferred standard, as they offer several benefits over their analog counterparts. Voltmeters are used to measure the gain or loss of voltage between two points in a circuit. The leads are connected in parallel on each side of the circuit being tested. The positive terminal of the meter should be connected closest to the power supply. In turn, the negative terminal would be connected after the circuit being tested. The analog dial or digital display will exhibit the voltage measurement. In this circuit, Atmel AT89C51 microcontroller is used for controlling the ADC and LCD display devices. ADC 0804 is used for analog to digital conversion. Port2 of AT89C51 microcontroller is used to interface with LCD display. The control lines of LCD are interfaced with Port3 Register Select – P3.0 Read/Write – P3.1 Enable – P3.2 The 11.0592Mhz crystal is used. Theory behind calculation of Voltage divider circuit The input voltage to ADC should not increase 5V and the maximum I/p Voltage to voltmeter is 15V only. So, the design of voltage divider circuit as follows where Vmax = Maximum i/p voltage to voltmeter, Vip = i/p voltage to ADC R1 and R2 are resistance of voltage divider circuit. Digital voltmeters (DVM) The first digital voltmeter was invented and produced by Andrew Kay of Non-Linear Systems (and later founder of Kaypro) in 1954. Digital voltmeters are usually designed around a special type of analog-to-digital converter called an integrating converter. Voltmeter accuracy is affected by many factors, including temperature

The Mill on the Floss :: essays research papers

The Mill on the Floss is a book written by George Eliot, whose real name is Mary Anne (later Marian) Evans. There is a great deal of autobiography in this book. The facts of Mary Anne's life do not match Maggie Tulliver, but there is an obvious reflection of her own life. Book One: Chapter1-13 The novel opens up with a description of the countryside around the town of St. Ogg's and the river Floss. In the second chapter Maggie, Mr. Tulliver, Mrs. Tulliver, and Mr. Riley are introduced. Mr. Tulliver states his intention to send Tom to a different school. In the third chapter Mr. Riley gives his advice about a school for Tom. In the forth chapter Mr. Tulliver goes after Tom, while Mr. Tulliver is gone you learn about that Maggie's mother is concerned mainly with what her family thinks. In the fifth chapter Tom is home and you learn that he cares for his sister Maggie deeply, and that Tom's opinion is very important to Maggie. In the sixth chapter the Tulliver's are getting ready for the aunts and uncles to arrive. In the seventh chapter the family arrives and you are introduced to Mrs. Glegg, Mrs. Pullet, Mrs. Deane and Maggie's cousin Lucy. Mr. Tulliver states his intention to send Tom to school and it is met with opposition. In the eighth chapter he goes to his brother-in-laws house to demand the money that he owes him so that he can pay his wife's sister Mrs. Glegg. In chapter nine you read about the Tullivers going to visit the Pullets. In the tenth chapter Maggie pushed Lucy in the mud because she is receiving most of Tom's attention. When Tom goes to tell on her she runs off and can't be found. In the eleventh chapter Maggie decides to run away to the gypsies, but after learning how poor they were and how little of food they had she decides to go back home. In the twelfth chapter you read that St. Ogg is named for it's patron saint who showed pity on a woman and child. St. Ogg is the town where the Gleggs live. In the thirteenth chapter Mr. Tulliver borrows money from a client of his old enemy Wakem. Book One: Chapter 1-7 In the first chapter of this book Tom is at school, and he is Stelling's only student. Maggie goes to visit him in October. In the second chapter Tom gets to come home for Christmas. Mr. Tulliver has a lawsuit against Mr. Pivart , his next door neighbor. It has also become known that Wakem's son will be sent to school with The Mill on the Floss :: essays research papers The Mill on the Floss is a book written by George Eliot, whose real name is Mary Anne (later Marian) Evans. There is a great deal of autobiography in this book. The facts of Mary Anne's life do not match Maggie Tulliver, but there is an obvious reflection of her own life. Book One: Chapter1-13 The novel opens up with a description of the countryside around the town of St. Ogg's and the river Floss. In the second chapter Maggie, Mr. Tulliver, Mrs. Tulliver, and Mr. Riley are introduced. Mr. Tulliver states his intention to send Tom to a different school. In the third chapter Mr. Riley gives his advice about a school for Tom. In the forth chapter Mr. Tulliver goes after Tom, while Mr. Tulliver is gone you learn about that Maggie's mother is concerned mainly with what her family thinks. In the fifth chapter Tom is home and you learn that he cares for his sister Maggie deeply, and that Tom's opinion is very important to Maggie. In the sixth chapter the Tulliver's are getting ready for the aunts and uncles to arrive. In the seventh chapter the family arrives and you are introduced to Mrs. Glegg, Mrs. Pullet, Mrs. Deane and Maggie's cousin Lucy. Mr. Tulliver states his intention to send Tom to school and it is met with opposition. In the eighth chapter he goes to his brother-in-laws house to demand the money that he owes him so that he can pay his wife's sister Mrs. Glegg. In chapter nine you read about the Tullivers going to visit the Pullets. In the tenth chapter Maggie pushed Lucy in the mud because she is receiving most of Tom's attention. When Tom goes to tell on her she runs off and can't be found. In the eleventh chapter Maggie decides to run away to the gypsies, but after learning how poor they were and how little of food they had she decides to go back home. In the twelfth chapter you read that St. Ogg is named for it's patron saint who showed pity on a woman and child. St. Ogg is the town where the Gleggs live. In the thirteenth chapter Mr. Tulliver borrows money from a client of his old enemy Wakem. Book One: Chapter 1-7 In the first chapter of this book Tom is at school, and he is Stelling's only student. Maggie goes to visit him in October. In the second chapter Tom gets to come home for Christmas. Mr. Tulliver has a lawsuit against Mr. Pivart , his next door neighbor. It has also become known that Wakem's son will be sent to school with

Identify the Mission, Objectives, and Responsibilities of an Organisation Within It’s Environment Essay

An organisation is defined as ‘A group of people working together’ (Collins Dictionary 2001). An organisation is generally accepted as a unit working together to achieve the same goals. Concurring with this statement, Mintzberg (1997) defined goals as ‘the intentions behind decisions or actions, the states of mind that drive individuals or collectives of individuals called organisations to do what they do’. In order for an organisation to work, set guidelines have to be put in place for both short and long term aspirations, to ensure that the organisation is moving as a whole, a unit, to avoid separation, miscommunication, and misunderstanding. This can be achieved by administering a meaningful and worthwhile strategic plan consisting of a progressive, hierarchical set of aims. This will give each individual, as well as the organisation as a whole, a purpose. A set of aims can be as follows (Business Essentials 2010); An example of this would be my current place of employment. Their Vision Statement is as follows; ‘We are committed to providing a modern, efficient, and cost effective service focused on meeting our customer’s needs in a friendly , timely, and accurate manner, and will provide the necessary resources to enable achievement of our objectives. We will be readily accessible to everyone in the community to maximise social inclusion, minimise barriers to work and assist people to live in decent housing. We will process claims quickly and accurately, while actively reducing the incidences of fraud or error through investigation. Where fraudulent intent is proven, we will seek to apply appropriate sanctions as a deterrent against future activity. Where we seek to collect money, we will issue bills promptly and correctly. Where recovery action is required, we will act quickly, fairly, and impartially, but with due regard to social welfare and human rights of our customers.’ (Heather Tiso, 1995) However something so unobtainable may not be in the forefront of people’s minds. This is summed up in the following article statement ‘Mission statement in some companies has a huge influence in all management levels of the firm, but in others it is still just addition on the wall and usually what’s forgotten.’ Values of an organisation are more likely to be remembered, as they are more relatable to people within. The values upheld by the people within my organisation, are that of trust, respect, pride in work, ability to take ownership, two way communication – to give as well as to receive, to maintain excellent customer service at all time, to help each other out if need be, to feel comfortable and confident enough to speak up if they have any ideas for improvements, to strive for fairness, equality, and diversity, versatility, flexibility, taking responsibility for their own development, to be open minded as our line of service is ever changing. This encourages a culture of people that are able to pull together against constant adversity, and still achieve excellent results, as well as continually exceed Service Level Agreements (SLAs). The key objectives of my organisation, can be broken down in to the following examples; †¢Operational Goal – to increase revenue (Objective – decrease number of incorrect subsidy claims by 10%) †¢Non Operational Goal – to modify behaviour of customers (Objective – to get customers to act and think in a productive manner) †¢Primary Objective – to maximise revenues with as little expenditure as possible †¢Secondary objective(s) – to maintain excellent customer service, to strive for 100% accuracy, to maintain excellent working relationships with stakeholders. †¢Corporate Objectives – To increase customer satisfaction, to minimise risk, to ensure a glide path is in place for these objectives. †¢Unit Objectives – to answer all calls within 20 seconds, to deal with all work items with a turnaround of 9 days, to see all customers visiting the offices within under 5 minutes, to identify and understand our customer’s needs, to maintain a very high level of service, to develop personal/professional relationships with stakeholders. The influence of stakeholders Identifying Stakeholders is a process of integration within the said organisation. This can be summarised with a statement from a World Bank Group article – ‘All parties should be listed which are likely to be affected by the development, both positively or negatively, directly or indirectly.’ Stakeholders in our company are highly valued and important, and therefore our relationships with them are maintained to a very high standard. Our organisation has numerous companies identified as Stakeholders. This is not just on a professional level, as on top of Internal Stakeholders (i.e. staff) we recognise a number of Connected Stakeholders (customers, suppliers,) and External Stakeholders (local community, the government). Therefore, overall Stakeholder influence is vast, extending way beyond just making a customer happy. The knock on effects of the positive or negative experience of that customer may affect my organisation greatly. As different Stakeholders have different interests, it is not possible to focus on all of them at once with a blanket gesture in the hope of satisfying all their needs. Their needs have to be prioritised by looking at individual objectives, and balancing important/urgent needs with needs that would not have an adverse effect or affect relationships by waiting to be dealt with. Examples of Stakeholders in my organisation, are employees, customers, and the Government. As staff are immediately and intimately connected with the organisation, their influence is going to possibly be the strongest influence. It has been said numerous times that employees are the most influential. Motivated employees are highly likely to be more productive in producing work, ideas, and meeting objectives. Coincidently, the objectives of staff, are to be treated fairly, be given equal opportunity, be recognised for the consistently excellent work they produce when the odds are stacked against them, feel secure in their job and working environment, and have a sense that they are achieving. These objectives are met in the most part, however, as the organisation as a whole has a hierarchy , and it tends to be the senior managers setting objectives and deciding whether these have been met. This can lead to the human element being lost, and people judged by numbers, as other factors aren’t always taken into consideration. This can affect morale, but ultimately, our nee ds are met. Achieving objectives of stakeholders One of our Connected Stakeholders, our customers, are generally the focal point of our work. The bottom line, is customers want a service provided with their individual interests in mind, with the least possible output from them. The saying ‘The Customer is Always Right’, is incorrect in my opinion. The customer may not know what they need, they need to be asked open and closed questions in order to ascertain exactly what service they require. Customers wish to be heard, treated with respect, and for a positive experience with whatever organisation they deal with. The needs of our customers are met, as they are one of the most important stakeholders. Failure to meet these needs may result in loss of business, complaints, and repercussions from higher management if objectives are not met. The Government is an example of our External Stakeholders. This is due to the fact we are a public sector organisation, and a direct derivative of Central Government. The Government’s objectives are mainly that their Corporate Objectives influence our Unit Objectives, as well as Primary/Secondary Objectives. We meet the requirements of the Government by adhering to their laws, policies, procedures, and implementing them whilst maintaining a professional forefront to other stakeholders, such as the general public.

Movie Analysis Wall E - 990 Words

Taryn Gray Professor Buaas Eng. Comp. II 5 May 2017 Film Analysis Essay Wall-E is an animated science fiction film that was produced by Pixar and directed by Andrew Stanton in 2008. The setting, at the beginning of the movie, is a futuristic depiction of planet earth covered in garbage and filth, which sets the foundation for the environmental message. The creator also uses dancing and music throughout the movie to set the mood for the development of a relationship between Wall-E and Eve. The creators throw in lots of symbolism throughout the movie in order to show what earth/society may come to if we do not change our ways. The seedling is seen throughout the movie and is a symbol for hope and new beginnings for humanity after†¦show more content†¦When Wall-E broke the first display system, it was almost like he woke the passenger up, because that was when she finally realized the true beauty of everything surrounding her. The display system serves as an oppressor of existential thought and is symbolic of the societal ignora nce. The ship symbolizes the ignorance of humans because it allows everything to be done for them. The passengers can get everything with the push of a button. Wall-E realizes how ignorant people have become because when he boards the ship he sees they have reached a state where all people do is eat while keeping their eyes glued to a display screen. He realizes that all the ship is really doing is dictating peoples’ lives. Auto constantly has the protocol A113 pop up which is symbolic of destroying hope and new beginnings. The repetitive protocol symbolically shows the boring lives people live on the ship. The passengers of the ship live with no desire to have purpose, and they live an inauthentic life that is mapped out for them by the BnL corporation. Wall-E’s actions end up inspiring the passengers (especially the captain) to look for something different and break away from blindly accepting what everyone else is accepting. The lighters that Wall-E collects can be seen as a symbol of the love that is kindling between himShow MoreRelatedAnalysis Of The Movie Wall E 908 Words   |  4 PagesWALL-E WALLL-EEEE! Is a movie that inspires us to dream, and puts our imagination to work. The spectacular robot romance takes us to whole other world of animated robots that contribute to earth. The creator of Wall-e is Andrew Stanton. Andrew Stanton creates this movie with a twist of robots running human lives, as humans do nothing but sit. One company that has trash the earth with all its products and trashed it even more with robots that do not work anymore, except for the exception of Wall-eRead MoreAnalysis Of The Movie Wall E 975 Words   |  4 Pagesmessage. Wall-E is one of those movies. 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