Question

Diagonose and rectify thefault on the FACET board simulating a system defect.
• Based on observations and results analyse and compare NPN and PNP Transistors.
• Identify the troubleshooting procedures and how you would determine the serviceability state of the circuits.
• Suggest a repair scheme and precautions to be observed while replacing the transistor, considering the parameters of the component from the data sheet.
• Use a circuit design software tool to design the following circuit which is often found in Avionics equipment used in aircraft.
a) BJT Push Pull Amplifier Circuit (with the display of output waveform with cross over distortion clearly visible)
• Identify the significant issues and constrains that are faced in disposing off the faulty electronic components and its impact on environment. Also highlight the latest developments being made in electronic component disposal strategies.
• Summarise your findings in your report with a conclusion.

Answer 1

Places which are sparsely populated contain few people. Places which are densely populated contain many people. Sparsely populated places tend to be difficult places to live. These are usually places with hostile environments e.g. Antarctica. Places which are densely populated are habitable environments e.g. Europe.