Lab1.315

# Lab1.315 - EECE-315 Prelab 1 1 On a piece of four cycle...

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EECE-315 Prelab 1 1. On a piece of four cycle semilog paper, plot the equation y = 10 –6 e 30x for x = 0.1, 0.15, 0.20, 0.25, 0.30. 2. Bring to lab a clean piece of 4 cycle semilog paper. 3. In lab 1 you will be taking i-v measurements on a forward-biased diode using a series circuit composed of a DC voltage source, a resistor (decade box) and a diode. a. What order of magnitude of voltages (cut-in voltage) do you expect across the diode? b. Both the voltage source and the resistor can be varied. The maximum DC voltage source is about 20 V. The current through the forward-biased diode should be varied over the four decades between 1 uA and 10 mA. Within each decade, you will take data points at roughly 1, 2 and 5. This will provide the data to be more or less evenly spaced along the log scale. Determine what values of DC voltage source and resistance you will use in lab to achieve these values of current. Be aware that if you allow the resistance to go much below 2 k , you run the risk that your diode will blow.

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