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JFET Biasing ELEC 121. January 2004ELEC 1212 JFET Fixed Bias R G is present to limit current in case V GG is connected with wrong polarity This would.

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Presentation on theme: "JFET Biasing ELEC 121. January 2004ELEC 1212 JFET Fixed Bias R G is present to limit current in case V GG is connected with wrong polarity This would."— Presentation transcript:

1 JFET Biasing ELEC 121

2 January 2004ELEC 1212 JFET Fixed Bias R G is present to limit current in case V GG is connected with wrong polarity This would forward bias the gate-source junction causing high currents, which would destroy the transistor Since GS is reverse biased, I G = 0 and V RG = 0

3 January 2004ELEC 1213 DC Analysis for JFET Fixed Bias Network

4 January 2004ELEC 1214 JFET Fixed Bias Plotting Shockley’s Equation

5 January 2004ELEC 1215 JFET Fixed Bias Graphical Solution

6 January 2004ELEC 1216 JFET Fixed Bias

7 January 2004ELEC 1217 Graphical Solution for JFET Fixed Bias

8 January 2004ELEC 1218 JFET Self Bias Configuration

9 January 2004ELEC 1219 JFET Self Bias DC Equivalent Circuit V RG = 0 I G = 0

10 January 2004ELEC 12110 Transconductance Curve

11 January 2004ELEC 12111 JFET Self Bias Load Line

12 January 2004ELEC 12112 JFET Self Bias

13 January 2004ELEC 12113 JFET Self Bias Transconductance Curve

14 January 2004ELEC 12114 Graphical Solution of JFET Self Bias

15 January 2004ELEC 12115 JFET Self Bias Effect on Variation of R S

16 January 2004ELEC 12116 Self Bias

17 January 2004ELEC 12117 JFET Voltage Divider Bias

18 January 2004ELEC 12118 JFET Voltage Divider Bias DC Analysis InputOutput

19 January 2004ELEC 12119 JFET Voltage Divider Bias Load Line

20 January 2004ELEC 12120 The Effect of RS on Q-point

21 January 2004ELEC 12121 JFET Voltage Divider Bias

22 January 2004ELEC 12122 JFET Voltage Divider Bias Q-point

23 January 2004ELEC 12123 Voltage Divider Bias

24 January 2004ELEC 12124 JFET Self Bias with Dual Supply

25 January 2004ELEC 12125 Determination of Q-point for Self Bias with Dual Supply

26 January 2004ELEC 12126 Common Gate JFET Self Bias

27 January 2004ELEC 12127 Common Gate JFET Self Bias DC Bias Circuit

28 January 2004ELEC 12128 Common Gate JFET Self Bias


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