- Assessment: Financial Performance Evaluation of Savory Snacks Company Ltd for Credit
- CMI L5 Assignment: Managing Stakeholder Relationships: Strategies, Challenges, and Best Practices
- Level 3 Unit 2 Assignment: Principles, Values and Regulation in the Health and Social Care Sector
- COM4006 Assignment: Introduction to Academic Skills and Professional Development
- Assessment: Managing Organisational Change: Evaluating Strategies, Challenges, and Impact
- UNIT CMI 706 Assignment: Finance for Strategic Leaders: The Role, Scope, and Impact of Finance
- ENGINEERING DESIGN TMA2 v1: CAD Design Report: Specification, Evaluation & Drawings
- Unit CMI 514 Assignment: Analysis of Organisational Change: Managing Change
- EMS402U TMA1: Engineering Design Solutions: Concept Development & Assessment
- LEVEL 3 UNIT 31: Effective Project Management (International BTEC )
- ILM Level 4 ASSIGNMENT: Managing equality and diversity in own area
- CMI 504 Assessment: The Rationale For Managing Performance Within Organisations
- Level 7 Unit 03 Assignment: Leading a Strategic Management and Leadership
- LO:01, LO:02 (MSCCO01) Managing Innovation and Change in Computing
- CMI Level 6 Certificate in Professional Management and Leadership
- Financial Accounting: Double-Entry Bookkeeping, Journals, Ledgers, and Trial Balance Preparation
- Assignment 1: Understand and Work with a Wide Range of Stakeholders and Organisational Structures
- CMI 526 Assessment: Principles of Leadership Practice
- Promoting Health, Wellbeing, and Inclusive Care in Health and Social Care Settings
- MID4022 Legal and Ethical Professional Principle in Midwifery
ENGR4035 Simulate the system shown in Fig 9.1 using Multisim. Initially set the Variable voltage source VB=1.5V: Basic Electrical Engineering Assignment, OBU, UK
University | Oxford Brookes University (OBU) |
Subject | Basic Electrical Engineering |
Part A: (30%)
Simulate the system shown in Fig 9.1 using Multisim. Initially set the Variable voltage source VB=1.5V, and ‘open’ the switch and leave it ‘open’. Not an ‘open switch’ is not conducting and a ‘closed switch’ is conducting.
When you open the switch the LED should remain ON, then after a short interval go off. Repeat this sequence by momentarily closing the switch then opening it again. Note that almost instantly the switch is closed the LED comes ON.
Q1. Monitor and record the voltages at pins 2 and 3 of U1, keeping an eye on the LED status. At what voltage on pin 2 does the LED go out? Can you explain why it is no longer ON? Check and record the voltage changes at pin 6 of 741 op-amp (U1) when the LED is ON and OFF.
Q2. Set VB=2V, 4V, 6V and 8V . What happens to the LED for each value and why? Explain what U1 (741 op-amp) is doing?
Q3. The next step is to investigate the current flowing in the transistor (bipolar junction transistor or BJT) Q3. Set the switch to keep the LED OFF and note the values of voltages on Q3 terminals (collector, base and emitter). Now get the LED ON and keep it ON. Measure and record, the voltages across R2 and R4 and calculate the values of IB and IC, these being the base and collector currents respectively. Can you deduce from these measurements the function of Transistor Q3 in the system?
Q4. Go back to the operating conditions needed to get the timer to work for a relatively short time interval and generally probe and record voltages throughout the circuit to see exactly what is happening and try to come up with a brief explanation of how the timer operates.
Explain the operation of the Delay Timer System of Fig. 9.1. Discuss the and explain the performance and limitations of the system. Suggest how could you improve on the limitations?
Buy Answer of This Assessment & Raise Your Grades