Blocking Diode Is Useful Tool For Limiting The Direction...

Blocking diode The blocking diode is a helpful tool for limiting the direction energy can flow through a wire to just one direction. It uses a semiconductor P/N junction achieve this behavior. The diagram shows a simple setup with two panels charging a battery (for simplicity no controller is shown) with a blocking diode in series with the two panels, which are also wired in series. When the sun shines, as long as the voltage produced by the two panels is greater than that of the battery, charging will take place. However, in the dark, when no voltage is being produced by the panels, the voltage of the battery would cause a current to flow in the opposite direction through the panels, discharging the battery, if it was not for the blocking diode in the circuit. Blocking diodes will be of benefit in any system using solar panels to charge a battery. Blocking diodes are usually included in the construction of solar panels so further blocking diodes are not required. Most photovoltaic solar panels are used to charge a battery during the daytime. Nearly all panels come equipped with a blocking diode. The diode prevents DC current from flowing backwards from the battery bank into the panel at night. The usual blocking device of choice is a schottky diode with a typical 0.5v voltage drop. In some large panels, which can often source over 4 Amps of current, the power loses due to this voltage dropShow MoreRelatedGsm Based Anti Theft System11765 Words   |  48 Pages 4.5 MICROCONTROLLER (AT89S52/C51) 4.6 GSM COMMUNICATION 4.7 GSM MODEM 4.9 SMART CARD MODULE 4.10 KEYPAD 4.11 LCD DISPLAY 4.12 MAX-232 4.13 DB9 CONNECTOR 4.14 ENERGY METER 4.15 BC547 4.15 OPTOCOUPLER 4.16 1N4007 4.17 RESISTOR 4.18 CAPACITOR 5. SOFTWARE REQUIREMENTS 56 5.1 IDE 57 5.2 CONCEPT OF COMPILER 57 5.3 CONCEPT OF CROSSRead MoreFinal Year Project (Heat Sensor)15216 Words   |  61 Pages After Transformation PCB Layout PCB Layout Sample Original After Transformation Component Used Part Description Note IC 1 LM741 Op-Amp NE741, µA741,etc Q1 2N2222A transistor Any power of transistor D1 1N4148 Diode 1N4001, or others Th1 10k Thermistor KC003T in prototype Re1 12v Relay RS is 1A R1 15k, ¼W,5% resistor Brown-green-orange R2,R5 10k, ¼W,5% resistor Brown-black-orange R3 150k, ¼W,5% resistor Brown-green-yellow R4 4.7k, ¼W,5% resistor Yellow-purple-redRead MoreHydraulic System Introduction18784 Words   |  76 Pageswork under high pressures, can be very expensive. (5) Hydraulic fluids under pressure are dangerous and under certain conditions, flammable. PRINCIPLES OF HYDRAULIC SYSTEM OPERATION Introduction Hydraulic systems employ fluids to transmit energy from the point of application, ie power source to the output actuator. A fluid is defined as, ‘a substance that will readily take up the shape of its container’ and it may be either a liquid or a gas. However, one of the main characteristics ofRead MoreHarmonic Load Flow Analysis8204 Words   |  33 Pageswhich include * Rectifiers * Inverters * Static VAR compensators * Cycloconverters * HVDC transmission The thyristor family includes: * Reverse blocking triode thyristors or silicon controlled rectifiers â€Å"SCR’s† * Bidirectional triode thyristors known as triacs * Bidirectional diode thyristors known as diacs * Reverse conducting triode thyristors * Light- activated SCR’s * Asymmetrical SCR’s * Static inductive thyristors * Gate turn-off thyristorsRead MoreQuality Improvement328284 Words   |  1314 Pagesframework to use in conducting quality improvement projects. DMAIC often is associated with six-sigma, but regardless of the approach taken by an organization strategically, DMAIC is an excellent tactical tool for quality professionals to employ. Part II is a description of statistical methods useful in quality improvement. Topics include sampling and descriptive statistics, the basic notions of probability and probability distributions, point and interval estimation of parameters, and statistical hypothesisRead MoreManaging Information Technology (7th Edition)239873 Words   |  960 PagesTechnology Chapter 5 Chapter 6 Chapter 7 Enterprise Systems 189 Managerial Support Systems E-Business Systems 253 187 223 PART III Acquiring Information Systems 327 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Basic Systems Concepts and Tools 329 Methodologies for Custom Software Development 361 Methodologies for Purchased Software Packages 390 IT Project Management 410 PART IV The Information Management System Chapter 12 Chapter 13 Chapter 14 Chapter 15 517 Planning Information

No Child Left Behind Essays - 1062 Words

LITERATURE REVIEW Rushton talks about the funding for the No Child Left Behind is being held back if the students don’t do well on the standardized tests. So if the students don’t do well on the testing the teachers are being affected in the way of how much they are getting paid, also affects the school districts funding. This is encouraging the teachers not to teach the way they should, but they are teaching in the way of let’s just make the students do well on the standardized tests. In this article Rushton talks about how the brain of the student learns. Rushton talks about how the pre-frontal lobe is responsible for the thinking skills, creativity, and also making judgments. For the students that are taking the standardized test†¦show more content†¦It may not be the teacher’s performance that is affecting the students test scores. The students may not develop on the same level that the standardized test are wanting them develop at. Tests scores are unreliable, but they still are more often right than wrong, but not sufficiently more often to justify making high-stakes decisions on the basis of test scores alone. No Child Left Behind: What We Know and What We Need to Know talks about how the No Child Left Behind holds the educational agencies and states accountable for the education of the students and their performances inside the classroom. The NCLB wants to accomplish this goal by using Adequate Yearly Progress (AYP) this measures how the students are doing inside the classroom. There are some problems with the AYP it allows the states to pick their own standards of test scores and proficiency levels. When the states make up their own rules on how to measure the AYP the studies are finding out that the AYP is having an enormous impact in the schools that meet the AYP. Discusses the problems we have with how we measure and calculate the effectiveness of how the schools are doing with the NCLB. The article talks about how the NCLB is to improve schools for the underperforming students. The connection is the article tells the readers how they measure the progress of the AYP. So pertaining to my question of should the standardized tests be the only way of testing students?Show MoreRelatedNo Child Left Behind958 Words   |  4 Pages Good intentions are no excuse to continue a fail policy. Since the No Child left Behind Act (NCLB) became in effect, teachers have been restricted to teach in a certain way. The No Child Left Behind Act of 2001, signed into law by President George W. Bush on January 8, 2002, which was a reauthorization of the Elementary and Secondary Education Act of 1965. President Bush once said; â€Å"education is the gateway to a hopeful future for America’s children. America relies on good teachersRead MoreThe No Child Left Behind1974 Words   |  8 Pagesorder to improve education in America, we have to go to the root of our problem in the school system and find better ways to enforce new rules and regulations that wouldn’t be detrimental to both students, schools, and educators alike. The No Child Left Behind (NCLB) Act is having a negative effect on our education system because it reduces the choices of schools for parents, and the distribution of qualified teachers. It also has a negative impact on the amount that kids are able to learn in schoolRead MoreNo Child Left Behind2277 Words   |  10 PagesIn the case of No Child Left Behind (N CLB), is politics the enemy of problem solving? By examining selected political controversies surrounding NCLB, it will be demonstrated that politics is the enemy. Since NCLB’s enactment, vast amounts of research literature and news stories have been published on its effects, which demonstrates the impact and debate generated by this law. The major goals of this bipartisan legislation were to improve student performance through standardized testing by usingRead More No Child Left Behind1472 Words   |  6 Pagesgone into many wars. Not just physical wars that I am considered about but also wars on education. The nation could destroy its own glory and way of the source of great future that it rely on by initiating a war on the minds of the children. No Child Left Behind (NCLB) is a federal education policy that was developed in 2001. (Lagana-Riordan and Aguilar 135). NCLB is a program designed to minimize the differences in the level of education that white or rich people get to poor African-American, HispanicRead MoreNo Child Left Behind555 Words   |  2 Pagesschools and their mission to build the mind and character of every child, from every background in every part of America.† Pr. George W. Bush. The No Child Left Behind Act has plenty of advantages such as: helping students with disabilities, guiding teachers and parents so that they can help the child, and push the child to succeed. Students with language disabilities will be at a disadvantage in reading. The No Child Left Behind has provides students with tutors and extra help with homework. PresidentRead MoreNo Child Left Behind Act1621 Words   |  7 Pages The support for the No Child Left Behind Act plummeted down shortly after the act passed. Many people supported the act at first simply because they supported the goals of the act, once they saw the results, their opinions changed. One of the biggest arguments towards No Child Left Behind is that it is unfair. People believed the resources of difference schools were unequal, and thought the Title 1 funding that the schools received should go to ensuring all schools had equal resources. Many peopleRead MoreThe No Child Left Behind Act1670 Words   |  7 PagesKentucky-SW 630 Abstract This literature review seeks to explore the Every Student Succeeds Act (2015), a bipartisan reauthorization and revision to the No Child Left Behind Act (2002). The Every Student Succeeds Act (ESSA) is the first law passed in fourteen years to address Reneeded changes to the No Child Left Behind Act (NCLB). Considered progressive and innovative at the time of its passage, NCLB was the most dramatic and aggressive legislation enacted in decades and afforded theRead MoreEssay On No Child Left Behind1333 Words   |  6 PagesHook: â€Å"I used to love teaching,† said Steve Eklund, a retired California teacher. â€Å"Four words drove me into retirement—No Child Left Behind. I could no longer tend to the needs and wants of my students. All I was supposed to do was to get them ready to take tests.† Intro (with thesis): The surviving NCLB mindset of standardized tests being an accurate measure of a students achievement is a problem because it affects our student’s education and increases performance pressure on teachers. WhatRead MoreNo Child Left Behind Act1418 Words   |  6 Pagessystematic oppression. The flowing water of oppression floods poor schools; drowning students with dreams, and giving no mercy. The only ones safe from the water are the privileged, who are oblivious to the fact that it exists. George Bush s No Child Left Behind Act, which passed in 2002, mandated annual standardized testing in math and reading. If schools received insufficient scores, they were punished or shut down. This fueled the construed concept that a school is only doing well if the studentsRead MoreThe No Child Left Behind Act Essay921 Words   |  4 Pagesuccessful at it. (Source 7) Next, the â€Å"No Child left behind Act† it was signed by President George W. Bush and it passed with bipartisan support on Jan. 8, 2002. This Act states that there will be mandated annual testing in the subject reading and math and science. In the grades 3-8 and 10th grade. It shows the Adequate Yearly Progress of each school in the system of the United States. (source 1) The biggest point of this Act is that no child is â€Å"trapped in a failing school† (source 1). That each

The Silver Linings Playbook Chapter 6 Free Essays

The Concrete Doughnut I notice that my father waits until the game is just about to begin before he comes into the family room. It is only preseason, so we do not engage in any of the regular-season game-day rituals, but Dad has put on his number 5 McNabb jersey and now sits on the edge of the couch, ready to jump out of his seat. He nods at my brother solemnly but completely ignores me, even after I heard my mother say, â€Å"Please, just try to talk to Pat† when they were arguing in the kitchen. We will write a custom essay sample on The Silver Linings Playbook Chapter 6 or any similar topic only for you Order Now Mom puts the food on folding tables, takes a seat next to Jake, and we all start to eat. The food is excellent, but I am the only one to say so. Mom seems happy to get the compliment, saying, â€Å"Are you sure it’s all right?† like she does, because she is modest when it comes to cooking, even though she is a great cook. â€Å"What do you think the Birds will do this year, Dad?† Jake asks. â€Å"Eight and eight,† my dad answers pessimistically, like he always does at the beginning of every NFL season. â€Å"Eleven and five,† my brother says, to which my father shakes his head and blows air through his teeth. â€Å"Eleven and five?† my brother asks me, and I nod because I am optimistic, and winning eleven games would most likely put the Eagles in the play-offs. Since we have season tickets, I know we are assured play-off tickets should the Birds earn a home game, and there’s nothing better than an Eagles play-off game. Now, I admit that I have not been keeping up with the Birds in the off-season, but when the starting lineups are announced, I am really surprised that many of my favorite players are no longer on the team. Duce Staley. Hugh Douglas. James Thrash. Corey Simon. All gone. I want to ask, â€Å"When? Why?† but don’t, fearing my father and brother will think I am not a true fan anymore, which they said would happen when I first moved to Baltimore with Nikki and gave up my season ticket. To my surprise, the Birds are also not playing in Veterans Stadium, but at Lincoln Financial Field, just like Jake had said. Somehow they have built an entire stadium since last season, and I must have missed all the hype because I was stuck in the bad place. Still, something does not really seem right to me. â€Å"Where is Lincoln Financial Field?† I try to ask nonchalantly when the commercials come on after the first series. My father turns his head and stares at me but does not answer my question. He hates me. He looks repulsed, like it is a chore to sit in the family room watching the game with his mentally messed-up son. â€Å"It’s in South Philadelphia, just like all the other stadiums,† my brother says too quickly. â€Å"Good crabby snacks, Mom.† â€Å"Can you see Lincoln Financial Field from the Vet?† I ask. â€Å"The Vet’s gone,† Jake says. â€Å"Gone?† I ask. â€Å"What do you mean, gone?† â€Å"March 21, 2004. Seven a.m. It fell like a house of cards,† my father says without looking at me, just before sucking an orange piece of meat from a chicken bone. â€Å"Over two years ago.† â€Å"What? I was at the Vet just last †¦Ã¢â‚¬  I pause because I start to feel a little dizzy and nauseous. â€Å"What year did you just say?† My father opens his mouth to speak, but my mother cuts him off, saying, â€Å"A lot has changed since you were away.† Still, I refuse to believe the Vet is gone, even after Jake retrieves his laptop from his car and shows me a downloaded video of the Vet being imploded. Veterans Stadium – which we used to call the concrete doughnut – falls like a circle of dominoes, gray dust fills the screen, and it breaks my heart to see that place crumble, even though I suspect that what I am viewing is a computergenerated trick. When I was a boy, my father took me to many Phillies games at the Vet, and of course there were all of the Eagles games with Jake, so it is hard to believe such a big monument to my childhood could be destroyed while I was in the bad place. The video ends, and I ask my mother if I can talk to her in the other room. â€Å"What’s wrong?† she says when we reach the kitchen. â€Å"Dr. Patel said that my new medication might make me hallucinate.† â€Å"Okay.† â€Å"I think I just saw Veterans Stadium demolished on Jake’s computer.† â€Å"Honey, you did. It was demolished over two years ago.† â€Å"What year is it?† She hesitates, and then says, â€Å"Two thousand and six.† That would make me thirty-four. Apart time would have been in progress for four years. Impossible, I think. â€Å"How do I know I am not hallucinating right now? How do I know you’re not a hallucination? You’re all hallucinations! All of you!† I realize I am screaming, but I can’t help it. Mom shakes her head, tries to touch my cheek, but I swat her hand away and she starts crying again. â€Å"How long was I in the bad place? How long? Tell me!† â€Å"What’s going on in there?† my father yells. â€Å"We’re trying to watch the game!† â€Å"Shhhh!† my mother says through tears. â€Å"How long?† I yell. â€Å"Tell him, Jeanie! Go ahead! He’s going to find out sooner or later!† my father yells from the family room. â€Å"Tell him!† I grab my mother’s shoulders, shake her so her head wobbles all over, and yell, â€Å"How long?† â€Å"Almost four years,† Jake says. I look back over my shoulder, and my brother is in the kitchen doorway. â€Å"Now let go of Mom.† â€Å"Four years?† I laugh and let go of my mother’s shoulders. She covers her mouth with her hands, and her eyes are full of pity and tears. â€Å"Why are you guys playing jokes on – â€Å" I hear my mother scream, I feel the back of my head hit the refrigerator, and then my mind goes blank. How to cite The Silver Linings Playbook Chapter 6, Essay examples