Find Gain of JFET Diff Amp: V1 & VD2 Explained

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SUMMARY

The discussion focuses on calculating the gain of a JFET differential amplifier circuit, specifically identifying the output voltage V1 and the voltage VD2. The participant suggests that VD2 can be expressed as gm * RD, assuming that rd is infinite. The conversation emphasizes the importance of understanding the relationship between transconductance (gm) and load resistance (RD) in determining the amplifier's performance.

PREREQUISITES
  • Understanding of JFET (Junction Field Effect Transistor) operation
  • Knowledge of differential amplifier configurations
  • Familiarity with transconductance (gm) and load resistance (RD) concepts
  • Basic circuit analysis skills
NEXT STEPS
  • Research the calculation of transconductance (gm) for JFETs
  • Study the design and analysis of differential amplifier circuits
  • Learn about the impact of load resistance (RD) on amplifier gain
  • Explore simulation tools for analyzing JFET circuits
USEFUL FOR

Electrical engineers, students studying analog electronics, and anyone involved in designing or analyzing JFET differential amplifiers.

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Please refer to file attached. I'm trying to understand how to find the gain for the JFET differential amplifier circuit, My guess is that vd2 is gm*RD. rd=infinity in this case. How do you find V1?
 
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No file attached
 
oops, thank you for pointing that out
 

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