Lab 17 RS

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The JFET (Junction Field Effect Transistor n-channel)

File:JFET MPF102 DataSheet.pdf

1.) Complete the table below for the JFET.

Characteristic	Symbol	Min	Max	Unit
Zero-Gate-Voltage Drain Current	[math] I_{DSS}[/math]	2.0	20	mAdc
Gate-Source Cutoff Voltage	[math]V_{GS(off)}[/math]	-	-8.0	Vdc
	[math]P_{max}[/math]
	[math]R_G[/math]	3.3 M[math]\Omega[/math]
	[math]R_D[/math]	1.0 M[math]\Omega[/math]
	[math]y_{fs}[/math]
	[math]y_{is}[/math]
	[math]y_{os}[/math]

2.) Construct the JFET circuit below.

3.) Plot measurements of [math]I_D[/math] -vs- [math]V_{DS}[/math] by varying [math]V_{dd}[/math] for [math]\left | V_{GS}\right |[/math] = 0, 0.5, 1.0, 1.5 V. (40 pnts)

4.) Plot [math] I_D[/math] -vs- [math]V_{GS}[/math] (30 pnts)

5.) Calculate [math]y_{fs}[/math] for your JFET (20 pnts)

Question

1. Does [math]y_{fs}[/math] depend on[math] I_D[/math]? (10 pnts)

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