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Unformatted text preview: can be read out of the plot as ~ 5.8 V, thus from KVL, the voltage dropped across the load is (6.0 5.8)V = 0.2 V, and the power absorbed by the load as P LOAD = V dd V DS ( ) 2 R LOAD ~ 0.2 mW for the 200- load resistor. By contrast, at V GS = 3.8 V, the voltage V DS can be read out of the plot as ~ 0.2 V, thus the power absorbed by the load is ~ 168 mW, increased by a factor of ~ 840 (!!). Note that the 200- load resistance in this circuit was chosen to ensure that a 0.25-W resistor could be used safely even if the MOSFET resistance R X becomes zero. If the load can handle higher powers, its resistance can be reduced....
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- Spring '07