Question

R, 220 k 2 R 6.8 k22 Q+12V Presented 3-stage phase-shift generator 1. Calculate output frequency fo. 2. Simulate the circuit. 3. Install powering voltage on minimum +25% (check the data sheet) for selected Op. Amp and measure output frequency of the generator. 4. Repeat the same procedure for maximum of powering voltage -10%. 5. Calculate powering sensitivity of the presented circuit (fGEN MAX-fGEN MIN ) / fox(VCC MAX-Vcc MIN).[1/V] LM 741 ov 0 + 3 -12V C, 0.01°F C, 0.01uF C, 0.01uF Note: VCC Max and VCC MIN are full powering voltage H R 6.8 k22 Rz 6.8 k22

Number 2

Answer 1

Here is the first two questions solution,

sorry due to lack of time I won't be able simulate and obtain output for last two question

a) founded DN 100K 0-ci, 10-4 o) en beloox 0.01x106 (2x3 427.04x10 .6 x 26 where, Nis number RC Stage Z of 427604x 2.44 x 10-6 R-Resistor value C = Capacitor value 0. 106 1046:03 =955 Hz

Draft1 Draft1 time R1 220000 V1 R2 U1 12 6800 + V2 LT1493 12 C1 C2 C3 0.014 R3 6800 0.014R4 0.014 6800 an 4

Draft 1 Draft 1 V(n002) -9.Omv- -9.2mV -9.4mv- -9.6mv- -9.8mv- -10.0mV- -10.2mv- -10.4mv- -10.6mV -10.8mv- -11.0mV+ 0.0s x = 2.223s y = -8.745mV 0.4s 0.8s 1.25 1.65 2.0s 2.4s 2.8s 3.25 3.6s 4.05