L12_L11Part3 Rpi_Rmu Equations_1

L12_L11Part3 Rpi_Rmu Equations_1 - 6.4 in 4nd Edition...

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Unformatted text preview: 6.4 in 4nd Edition Equations for Rπ = R10 and Rµ = R20 Zubair Adding Emitter Resistance RE Rπ = R10 & Rµ = R20 2 Equivalent Equations For R10 & R20 ′ RS + RE Rπ = rπ || 1 + g gm RE Set R’s = Rb + rx & RE = Re Rb + rx + Re Rπ = rπ || = R10 1 + g m Re 3 Rµ = Rc + 1 + RE / re + g m Rc ′ 1 / rx + (1 / RS )(1 + RE / re ) Set R’s = Rb + rx; RE = Re; RC = Rc, re = rπ / (β+1 ) Rµ = Rc + rπ + ( β + 1 )Re + g m rπ Rc ′ 1 / rπ + (1 / Rs )(1 + RE ( β + 1 )/ π ) 1 + Re ( β + 1 )/ π + g m Rc ′ 1 + (1 / Rs )(1 + RE ( β + 1 )) R′{r + ( β + 1 )Re } + βRC Ru = Rc + s π ′ RS + {rπ + RE ( β + 1 ) } R′{r + ( β + 1 )Re } + βRC ′ Ru = RC [ RS + {rπ + ( β + 1 )Re }] + s π ′ Rs + rπ + RE ( β + 1 ) Rµ = Rc + Rµ = ′ Rs [rπ + ( β + 1 )Re ] R [ R′ + r + ( β + 1 )Re ] + βRC +Cs π ′ ′ Rs + {rπ + ( β + 1 )Re } Rs + rπ + RE ( β + 1 ) ′ Rµ = [ Rs || {rπ + ( β + 1 )Re }] + RC rπ + ( β + 1)( Rs + Re ) ′ Rs + rπ + ( β + 1 )Re Rµ = [( Rb + rπ ) || {rπ + ( β + 1 )Re }] + RC Rµ = R20 rπ + ( β + 1 )(Rb + Rs + Re ) Rb + rx + rπ + ( β + 1 )Re 4 ...
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This document was uploaded on 09/28/2011.

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L12_L11Part3 Rpi_Rmu Equations_1 - 6.4 in 4nd Edition...

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