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BJT Internal Capacitances and High Frequency Model - BITS Pilani

BJT Internal Capacitances and High Frequency Model - BITS Pilani

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Cut off frequency<br />

I b sC µ V π I c =(g m -sC µ )V π<br />

V π = I b x [Impedence sum<br />

between B’ <strong>and</strong> E]<br />

E<br />

V<br />

1<br />

r<br />

I<br />

I<br />

b<br />

b<br />

[ r<br />

sC sC<br />

||<br />

C<br />

||<br />

C<br />

]<br />

<strong>BITS</strong> <strong>Pilani</strong>, Dubai Campus

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