Calculate the center frequency when the lower cutoff frequency is 20Hz and the higher cutoff frequency is 2kHz. Choices: a) 200Hz, b) 2020Hz, c) 2000Hz, and d) 44.72Hz If the midrange voltage gain of a certain amplifier is 100dB, what is the gain at cutoff frequency? Choices: a) 3dB, b) 50dB, c) 97dB, and d) 100dB

3. You are to design a microphone pre-amplifier that passes frequencies between 30HZ and 1.2kHz. At the center frequency (fo) the gain of the amplifier is to be 40 dB's. Design the amplifier according to the specifications listed above. Note that a power supply is available to power the pre-amp. Determine suitable values for the system components to meet the design specifications. Build and generate a Bode plot of your results. Measure the center frequency and half-power frequencies of your pre-amp and compare with specifications. Comment on the results and be sure to include a schematic of your circuit and Bode plot.

A-Design a two-stage BJT amplifier as shown in the figure with coupling capacitors such that the 3 dB low frequencies associated with each stage are equal to 20 Hz. The transistor parameters are: ß = 200 and 1=5.21KQ. Vcc=5V Rc1= 3.5 kQ2 SR₁ = 3.55 ΚΩ R₁ = 55 k Ri R₂ = 31 kQ2 CCI REL= C1kQ2 HH Cc₂ www Ri R₂ = 31kQ2 RE2= ΣΙΚΩ

Please solve both. As per bartleby honor code I can submit 3 questions of same category.both the questions are same category. Solve both please