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4. For the current-steering circuit of Fig. 4, find Io in terms of IREF and device...
(12 points) Consider the following MOS current mirror circuit. Let IREF-45 μΑ, k, = 25 ㎂/V2, Vtn = 0.75 V, and λ = 0.01 V-1. The indicated ratios are the W/L for the individual transistors. Find the values of all three output currents. a) O +10 V +8 V +12 V IREF 1o 02 04 10 20 40 4 M2 4
2. (36% ) In Fig. 2, the device parameters and (W/L) ratios for Q1-Q3 are given below (WIL), 2 (W/L)2-2 (W/L); (a) (10%) If IREF-2nA, find VD3 and VS3 and verify if Q3 is in saturation. Ignore the channel length modulation for DC analysis. Note: DC Vc30 (b) (12%) Draw the "small signal" circuit for the complete +10 V amplifier. Based on the circuit, derive the AC voltage gain vo/vi in terms gm, ro and RD (please use appropriate subscripts...
The current source shown in Fig. 2 is known as a "regulated cascode" circuit. Assume that both an righn wo Find the thi currents|REF and lot T in terms of VDDNos and VGS2 (Note that IREF i 2. Find the output resistance of this current source in terms of the appropriate small-signal transistor parameters and resistor values OUT GS1 M2 - GS2 Figure Z Igure 2
Problem 3 125 Use the Fourier transform to find io (t) in the circuit shown in Fig. The current source ig(l)-50 cos 3t A. 3 5) 1 H
= For the circuit of Fig. 8.27, let io(t < 0) = -1 mA, 1,(t > 0) = 2 mA, R 2.000 Q, R = 3,000 12, and L = 20 mH. a. Find va for t > 0. b. What is the approximate duration of the transient? 6. Sketch va(t). FIGURE 8.27
find the io and current to in the circuit in Assume it is is an ideal op Amo 86 10 + lav (+ ww + av
For the circuit of Fig. 1, where the armature circuit of a machine is connected to an electronic circuit, with v.-100Vrms AC, R-I Ω and E0-20 V. The inductor L is considered so large that the current io is constant. Calculate the average values of va and io. Sketch is 3. Eo ip lD Fig. 1
Solve using matrices
Use mesh analysis to find vab and io in the circuit of Fig. 3.89 Figure 3.89: 20Ω 30 52 80 V(+ 20 92 3012 vab 80 V(+ 30 2 20Ω
Fig 4 Fig 3. 6. In Fig 4, (1) write down the expression of the current, as a function of time in the left circuit, as soon as circuit is closed (ii) Now imagine the rectangular circuit on the right is moving with a velocity dx/dt = v ta the right. Find the current induced in the rectangular coil both due to the changing current in the left cir and also due to its motion to the left diue a...
4. Use the mesh-current method to find i, iandi in the circuit shown in Figure 4. W 1.50 Fig. 4 5. Use the mesh-current method to find i, toi, in the circuit shown in Figure 5. 250 m . 1000 200 V +) 500 10 Fig. 5 6. Use the mesh-current method to find the power that the current source delivers to the circuit shown in Figure 6. 5.60 0.80 30 A Fig. 6