MOSFETS

Sunday, 14 July 2019

9:19 PM

Arrow for the source

Voltage controlled

 

Circuit Configurations

• Common source
• (Most common configuration)
• Source is common to the input and output
• 180 degree phase change
• Medium input impedance
• Medium output impedance
• Common gate
• Gate is common to the input and output
• No phase change
• Low input impedance
• High output impedance

 

• Common drain
• "Source follower"
• Drain is common to the input and output
• No phase change
• High input impedance
• Low output impedance

 

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• Disable voltage and current sources
• Mid, High -> Short external capacitor
• Replace BJT and MOSFET with small signal
• Low, Mid -> Open internal capacitor
• High -> Keep internal capacitor