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Consider the positive current-limiting circuit involving

Microelectronic Circuits | 6th Edition | ISBN: 9780195323030 | Authors: Adel S. Sedra ISBN: 9780195323030 147

Solution for problem 12.54 Chapter 12

Microelectronic Circuits | 6th Edition

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Microelectronic Circuits | 6th Edition | ISBN: 9780195323030 | Authors: Adel S. Sedra

Microelectronic Circuits | 6th Edition

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Problem 12.54

Consider the positive current-limiting circuit involving Q13A, Q15, and R6. Find the current in R6 at which the collector current of Q15 equals the current available from Q13A (180 A) minus the base current of Q14. (You need to perform a couple of iterations.)

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Brooke Bell Service Learning Activity #2 1. For my service learning project, my group of fourth graders that I work with be helping their community and the environment through service learning. The students will host a recycling event throughout the semester to get students in their school recycle their goods instead of just throwing them away. At the end of the project, which is five weeks long, the students will get to go out for the main event, and plant a flower in their community park. They will reflect on how the environment is affected by plants, and how pollution is changing our environment and how they could take action. 2. Possible partner organizations include: Keep America Beautiful, Waste Management, and Future for Kids. 3. Type of service activities used: direct: the students will be doing direct work by planting a flower in their park. Indirect: Students will be learning in the classroom about the environment and how recycling helps the environment. The students will also learn about pollution and how pollution is affecting the earth (global warming). Research­based: students will be given an assignment to research how they can help the community in their day to day life. They will read and take notes on simple ways to prevent global warming. They will also research statistics about recycling, the environment, and pollution. Advocacy: In order for students to collect recyclable materials, they will have to advocate to their peers about recycling and create posters to advertise their project. 4. The group of students I work with are in the fourth grade and are 9 and 10 years old. The subject we are focusing on are earth science and environmental science. Lessons involving math and the environment will be included in some class activities to help refresh the students in math. Section 2 1. Budget: a. Materials that will be used: notebooks, pencils, posters, markers, gloves, flower seeds, shovels. b. Item Description Vender/Store Cost per Quantity Item Needed Notebooks: Walmart $0.94 5 Flower Seeds: Parkseed.com $2.25/25 1 seeds Gloves: Warmart $8.92/100 1 count Shovels: Walmart $7.16 5­10 Pencils: Walmart $3.58/12­ 1 pack 2. Detail and Revenue plan: In order for the students to have the funds to conduct their service learning project, donations at the school will be held all semester long. There will be jars in each classroom to donate to the cause. Parents and others can donate as well. Students will create posters to advertise their event and inform the student population about the cause. Money will also be provided when the students turn in all the cans/ recyclable material at the end of the semester. Any extra money that is left over will go to the school, Cesar Chaves, to help support their recycling program. 3. Schedule: Day of event: 3:00 PM­ students arrive 3:10 PM­ we leave to walk to park. Materials have been handed out to students to bring. 3:25: arrive at park. Begin giving instructions to students and distributing materials. 3:35 PM: begin planting flowers. Once students are done they will reflect on what they learned throughout the semester and how they have bettered their environment. 4. No transportation cost: We will walk to park site. 5. Students will need to turn in permission slip forms a week prior to the event that has any medical information as well as an emergency contact. All students must wear closed toed shoes. 6. Once a week, the lesson will be about 30 minutes long. On the day of the event, we will spend about an hour and a half. 7. The students will be prepared by learning how to plant a flower prior to the day of the event, as well as environmental statistics and information about what they are doing.

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Chapter 12, Problem 12.54 is Solved
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Textbook: Microelectronic Circuits
Edition: 6
Author: Adel S. Sedra
ISBN: 9780195323030

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Consider the positive current-limiting circuit involving