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Lab8.315

# Lab8.315 - EECE-315 Prelab 8 1 Devise a technique(NOT using...

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EECE-315 Prelab 8 1. Devise a technique (NOT using a curve tracer) to measure V P of a JFET. Show your circuit and explain how you do it. 2. Devise a technique to measure I DSS of a JFET. Show your circuit and explain how you do it. 3. Find data sheets of the 2N3819 JFET and record the values of V P and I DSS . Attach data sheets to your prelab. 4. On a sheet of linear graph paper, plot the empirical equation for the transfer characteristic of a JFET. The horizontal axis should be V GS / V P . The vertical axis should be I DS / I DSS . The graph should be either done on a computer or draw using a French curve. 5. For the circuit shown, calculate the quiescent values of I DSQ and V DSQ using the nominal values of the FET parameters. RS 10k J2N3819 R1 2.2M 0 0 RD 4.7k R2 1M VDD 20V

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EECE-315 Lab 8 1. Measure V P and I DSS for a 2N3819 JFET. DO NOT use a curve tracer. Show your circuits and explain how you measure them. Compare them to the values given by data sheets. 2. For a fixed V DD of 20 V, take data that will allow you to make an accurate plot of the entire transfer characteristic of the JFET.
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