Cálculo da Resistência de Entrada

Prévia do material em texto

Step 1 of 4 12.020P Calculate the load current. Calculate the input current to the amplifier. Step 2 of 4 The input resistance, The voltage, = = =2(0.025)(23.72) = 1.186 V Step 3 of 4 Calculate the large signal input resistance. Calculate the approximate value of the large signal input resistance. Step 4 of 4 The table 1 shows the values calculated for different output voltages in the range, -10 V to +10 V Table I +10 100 2 10.1 5.05 4.9 5 50 1 5.08 5.08 4.9 1 10 0.2 1.041 5.205 4.9 0.5 5 0.1 0.526 5.26 4.9 0.2 2 0.04 0.212 5.3 4.9 0.1 1 0.02 0.106 5.3 4.9 0 0 0 0 0 0 -0.1 -1 -0.02 -0.106 5.3 4.9 -0.2 -2 -0.04 -0.212 5.3 4.9 -0.5 -5 -0.1 -0.526 5.26 4.9 -1 -10 -0.2 -1.041 5.205 4.9 -5 -50 -1 -5.08 5.08 4.9 -10 -100 -2 -10.1 5.05 4.9 Thus, the input resistance is calculated, and compared to the approximated value.