Question: Design the circuit as a multivabrator that detects the presence of audio signals. Consider the average noise level is 120 mV. Scale the multivabrator so

Design the circuit as a multivabrator that detects the presence of audio signals. Consider the average noise level is 120 mV. Scale the multivabrator so it detects the presence of signals above 1 V. Assume R1=10 Kohm , R3=100Kohm, L+ = -L_ = Vcc = 12V. R2 VCC R1 U2 UA741 OU OVo 27 $ost R3 VCCO R4

R2 VCC R1 U2 UA741 OU OVo 27 $ost R3 VCCO R4

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