You are employed by a small Electronics Engineering Development company. The company is competing for a...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
You are employed by a small Electronics Engineering Development company. The company is competing for a tender for a government contract on an import-substitution project. Your section is dealing with the part of the project covering power supplies development, to run some other various circuitry (under development by other sections of the company). Part A - 5V DC Power supply @ 200mA [40 Marks] Your supervisor has passed on to you a basic simple 5V DC power supply design to verify and develop to a working prototype (specifications below and schematic in Fig.1). Your supervisor has told you that he "only scratched up some rough calcs to get the initial component values" shown in the circuit diagram provided. He suspects that the reservoir capacitor may be a bit small and so verification and some modifications may be necessary. Your supervisor has also requested that the modifications should focus on either converting the half-wave rectifier to a full-wave rectifier bridge, or resizing the reservoir capacitor value. Prototype testing should be done for the following output current loads : 50mA, 100mA and 200mA. The component costs of both of the modification options chosen are to be compared to conclude which is the best solution (cheapest!). The initial production run is to be for 1 000 units. [Jaycar prices were to be used to benchmark these as it will be the simplest approach at this time.] Your supervisor requires a short, 2 page report containing the following: • Analysis calculations verifying initial circuit; • Design calculations of designs/modifications; • Full detailed circuit diagram of final chosen solution; • Table of test results from building and testing the prototype final design; 6 • Calculations of cost comparison analysis for possible solution component variations; and 5 • A short video clip showing your prototype circuit under test. 8 (Marks : 40) 5V Power supply Specifications: Input AC voltage - Output DC voltage- Maximum Output current- Maximum Output Ripple Voltage- 7 8 6 220-240V 5.0V (tolerance -0.1V to +0.2V) 200mA 60mVpp 220-240Vac 12-14Vac AC Plug Pack ✈ D1 1N4004 100u C1 IN X1 LM7805 ADJ OUT 0.1u C2 You are employed by a small Electronics Engineering Development company. The company is competing for a tender for a government contract on an import-substitution project. Your section is dealing with the part of the project covering power supplies development, to run some other various circuitry (under development by other sections of the company). Part A - 5V DC Power supply @ 200mA [40 Marks] Your supervisor has passed on to you a basic simple 5V DC power supply design to verify and develop to a working prototype (specifications below and schematic in Fig.1). Your supervisor has told you that he "only scratched up some rough calcs to get the initial component values" shown in the circuit diagram provided. He suspects that the reservoir capacitor may be a bit small and so verification and some modifications may be necessary. Your supervisor has also requested that the modifications should focus on either converting the half-wave rectifier to a full-wave rectifier bridge, or resizing the reservoir capacitor value. Prototype testing should be done for the following output current loads : 50mA, 100mA and 200mA. The component costs of both of the modification options chosen are to be compared to conclude which is the best solution (cheapest!). The initial production run is to be for 1 000 units. [Jaycar prices were to be used to benchmark these as it will be the simplest approach at this time.] Your supervisor requires a short, 2 page report containing the following: • Analysis calculations verifying initial circuit; • Design calculations of designs/modifications; • Full detailed circuit diagram of final chosen solution; • Table of test results from building and testing the prototype final design; 6 • Calculations of cost comparison analysis for possible solution component variations; and 5 • A short video clip showing your prototype circuit under test. 8 (Marks : 40) 5V Power supply Specifications: Input AC voltage - Output DC voltage- Maximum Output current- Maximum Output Ripple Voltage- 7 8 6 220-240V 5.0V (tolerance -0.1V to +0.2V) 200mA 60mVpp 220-240Vac 12-14Vac AC Plug Pack ✈ D1 1N4004 100u C1 IN X1 LM7805 ADJ OUT 0.1u C2
Expert Answer:
Answer rating: 100% (QA)
Analysis calculations verifying initial circuit The initial circuit is a half wave rectifier with a 5V DC power supply The rectifier is composed of a diode resistor and a reservoir capacitor The input ... View the full answer
Related Book For
Materials and process in manufacturing
ISBN: 978-0471656531
9th edition
Authors: E. Paul DeGarmo, J T. Black, Ronald A. Kohser
Posted Date:
Students also viewed these mechanical engineering questions
-
You are employed by a local CPA firm, and one of your clients is Tiger Manufacturing Company. Tiger has been very successful in recent years, averaging approximately 10% increase in earnings each...
-
You are employed by a firm engaging in heavy manufacturing. Its direct materials are sourced globally, but its nonoperating inputs are sourced from a variety of U.S. vendors. You have been charged...
-
You are employed by a firm that produces tangible products. These products are then sold to a consuming populace that is unaffected by place, income, sex, race, age, or any environmental concerns....
-
What is the equal payment series for 12 years that is equivalent to a payment series of $25,000 at the end of the first year, decreasing by $1,200 each year over 12 years? Interest is 7% compounded...
-
The Ulysses Corporation and the Xenophon Company are the only producers of a sophisticated type of camera. They each can engage in either a high or a low level of advertising in trade journals. The...
-
Describe three predominant customer-oriented approaches for capturing the prospects attention and arousing interest.
-
Consider the flow of a liquid of viscosity \(\mu\) and density \(ho\) down an inclined plate making an angle \(\theta\) with the horizontal. The film thickness is \(t\) and is constant. The fluid...
-
Matthews Delivery Service has completed closing entries and the accounting cycle for 2014. The business is now ready to record January 2015 transactions. Jan. 3 Collected $ 900 cash from customer on...
-
When I am looking for an experimental Modulus of elasticity in a reinforced concrete Beam, where do I start my .1% offset on my load over the deformation graph? Is it .001 or .1% of the total...
-
A soil is modeled with the following Green and Ampt characteristics. Answer the following. : Hydraulic conductivity = 0.5 in/hr Porosity = 0.35 in/in Wetting Front Suction = -2.0 in Moisture deficit...
-
a) Explain why Siemens need to identify needs assessment for their staff. Your explanations should be based on Training and HRD Process Model. b) Explain how Siemens could design their training and...
-
You are a solutions design consultant at a major third-party logistics services provider (3PL). You have been recently engaged to provide advice to a client in the aviation sector. This client would...
-
Find the x-intercepts of the polynomial below. 2 f(x) = x + 4x 5 Show your work here
-
C.C.R.I.T. Logistics Solutions is a firm that includes Software Engineers, Web Application Developers, Desktop Application Developers and a logistics consultant, among other positions. The...
-
How do senior executives navigate the intricate balance between strategic formulation and operational execution within contemporary organizations ?
-
f Find f+g, fg, fg and Determine the domain for each function. g f(x)=5x+6, g(x)=x-5 (f+g)(x)= (Simplify your answer.)
-
Exercise A. Many people need to go to an office of the Department of Motor Vehicle (DMV) to get new license plates or get their driver's licenses. Write an equation modeling the number of people P...
-
Some people argue that the internal control requirements of the Sarbanes-Oxley Act (SOX) put U.S. companies at a competitive disadvantage to companies outside the United States. Discuss the...
-
What are some limiting properties of plastics, and in what general area do they fall?
-
It has been said that low-cost products are more likely to be more carefully designed than high-priced items. Do you think this is true? Why or why not?
-
What is the difference between n-type and semiconductors?
-
Why is the definition of quality critical to the success and acceptance of a project?
-
What would the QA/QC planning grid (see Figure 12. 6) look like for a project you have been involved in? Data from Figure 12. 6 Table 12.6 QA/QC planning grid, with examples Quality assurance...
-
What quality systems and standards exist in your organisation to 1) ensure quality across the project and 2) ensure quality within the products and services produced by your projects?
Study smarter with the SolutionInn App