ENGD1025 - Computer Aided Engineering, Electronics CAD - AutoCAD Assignment Help

Assignment Task :

Step 1 (ENGD1025)

The circuit you will be working from is an inverting amplifier based around an operational amplifier. See Figure 1 below. This is the initial circuit. You will need to show that you have entered the circuit correctly and in a readable fashion using your chosen CAD package. NOTE: it does not need to look exactly like Figure 1. It can be drawn in a much more readable way - so please experiment with this and see if you can present the circuit in a clearer way. Experimentation is the name of the game here. 

Step 2 

Mathematically analyze the circuit and give the inputs and expected outputs using different values of resistors R1 and R2. Apply the inputs to the simulation, carry out the simulation and explain the results. Compare the results to your mathematical solution. You may need to do some reading up to understand how the operational amplifier works - if you haven't already encountered it in ENGD1103-4. There is a document on Blackboard in the ENGD1025 shell that explains the operational amplifier - read this. During your demonstration, you will need to show that you can simulate a circuit. The basic simulation will be demonstrated in lectures, but you will need to go further than the basic demonstration. Show what happens if the input voltage is increased - is there a maximum? At what point does the output start to distort and why? What is the 'gain' of the amplifier? These questions, and more, are food for your logbook and demonstration. 

Step 3

Printed Circuit Board (PCB) - this is the common substrate upon which electronic circuits are built. In this step, you will design a printed circuit board. The basic process will be demonstrated in the lectures, and you will need to refer to this - and the lab tutor - for assistance as this may well be the first time you have encountered PCB design using CAD. You will be expected to design a printed circuit board no bigger than 50mm x 50mm (it can be smaller). During your demonstration, you should be able to show how you change and modify tracks, components, and positioning. You should also add your name as a text in the copper layer. The board can be single or double-sided. 

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