3 / 3 10096 + Page 3 of 3 Assignment Brief get Gloucestershire Engineering Training Course Pearson BTEC Level 4 Higher National Certificate in Engineering for England. Awarding Body Qualification Code 610/1224/5 Awarding Body Unit Code Unit Number 4020 Unit Code J/651/0739 Assignment Number 1 Task 2: Following your initial analysis, you are required to analyse several additional systems to ensure that they comply with all required regulation. As part of your analysis of an emergency lighting circuit, the engineer on site shows you the logbook of changes which contains the original Boolean expression from when the circuit was created. However, the notes on how this circuit operates have been lost and as such none of the maintenance engineers on site are willing to make changes. The original Boolean expression is: Q = (BC)(A + B + C)(A + D) Using a technique of your choice, simplify and analyse the operation of the circuit. Subsequently, reduce and optimize the logic of the circuit. As this is a safety critical system, state if there are any possibilities of hazards within the circuits and where these might be found. If there are any hazards, modify your obtained expression to eliminate these hazards. If possible, compare and contrast the implementation of this circuit using basic gates or using a NAND implementation. The safety circuit for a crucial system within the factory has failed. As such, the options are either repair or replacement. The original engineer who designed the system has left the company and left no notes on its operation, so repair is prohibitively expensive - a new design is therefore the best solution. The circuit is required to perform the following functions: 1. Have a master lockout switch, preventing the system from turning on if this input is activated. 2. Have four hierarchical inputs (W, X, Y, Z) with a decreasing importance. Each controls a different part of the system and when one input is active, only the next input may be activated. 3. Have two outputs (A, B). When A (the overall on state of the system) is active, B (the safety alarm) is disabled except when an invalid set of inputs has been activated. Using suitable techniques, design a logic circuit to implement these functions and subsequently reduce both of them to their simplest form. Apply DeMorgans theorem and compare the implementation with your already created circuit diagram to determine the best version. infor W OCKER ONTO

3 / 3 10096 + Page 3 of 3 Assignment Brief get Gloucestershire Engineering Training Course Pearson BTEC Level 4 Higher National Certificate in Engineering for England. Awarding Body Qualification Code 610/1224/5 Awarding Body Unit Code Unit Number 4020 Unit Code J/651/0739 Assignment Number 1 Task 2: Following your initial analysis, you are required to analyse several additional systems to ensure that they comply with all required regulation. As part of your analysis of an emergency lighting circuit, the engineer on site shows you the logbook of changes which contains the original Boolean expression from when the circuit was created. However, the notes on how this circuit operates have been lost and as such none of the maintenance engineers on site are willing to make changes. The original Boolean expression is: Q = (BC)(A + B + C)(A + D) Using a technique of your choice, simplify and analyse the operation of the circuit. Subsequently, reduce and optimize the logic of the circuit. As this is a safety critical system, state if there are any possibilities of hazards within the circuits and where these might be found. If there are any hazards, modify your obtained expression to eliminate these hazards. If possible, compare and contrast the implementation of this circuit using basic gates or using a NAND implementation. The safety circuit for a crucial system within the factory has failed. As such, the options are either repair or replacement. The original engineer who designed the system has left the company and left no notes on its operation, so repair is prohibitively expensive - a new design is therefore the best solution. The circuit is required to perform the following functions: 1. Have a master lockout switch, preventing the system from turning on if this input is activated. 2. Have four hierarchical inputs (W, X, Y, Z) with a decreasing importance. Each controls a different part of the system and when one input is active, only the next input may be activated. 3. Have two outputs (A, B). When A (the overall on state of the system) is active, B (the safety alarm) is disabled except when an invalid set of inputs has been activated. Using suitable techniques, design a logic circuit to implement these functions and subsequently reduce both of them to their simplest form. Apply DeMorgans theorem and compare the implementation with your already created circuit diagram to determine the best version. infor W OCKER ONTO

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter4: Symbols

Section: Chapter Questions

Problem 3SQ: What do the following abbreviations stand for? a. SPST b. SPDT c. DPST d. DPDT e. NO f. NC

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