856 B
856 B
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Determine
R_{in}of a non-inverting amplifier whenA_O=200000,R_D=10M\Omega,R_f=10k\Omega, andR_i=1k\Omega.R_{in}=R_d(1+A\beta);\ \beta={R_i\over R_i+R_f}\ \beta={1k\Omega\over 11k\Omega}=0.0\overline{9}\ R_{in}=10M\Omega(1+2_E6(0.0\overline{9}))\ R_{in}=10M\Omega(181818)=1.\overline{81}T\Omega -
Determine
R_{out}of a non-inverting amplifier, given the above, whereR_O=75\Omega.R_{out}={r_o\over 1+A\beta};\ \beta A=181818\ R_{out}\approx{75\Omega\over181818}=412\mu\Omega -
Determine
A_{CL}of a non-inverting amplifier whenA_O=2000,R_f=10k\Omega, andR_i=1k\Omega.A_{CL}\approx{1\over\beta};\beta=0.0\overline{9}\ A_{CL}=11 -
Repeat 3 where
A_O=200000A_{CL}\approx{1\over\beta}\ A_{CL}=11