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I'm trying to get the small signal model for this circuit:

This is my attempt I'm not sure where W1 should go. Should it be shorting out RD? Also R2 = RD on this circuit diagram

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  • \$\begingroup\$ EE.SE has a built-in circuit editor \$\endgroup\$ – pipe Oct 2 '16 at 20:19
  • \$\begingroup\$ The small signal model depends on the operating point of the circuit. Is M2 in saturation, threshold voltage, voltage drop across R2, ... \$\endgroup\$ – Mario Oct 4 '16 at 20:37

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