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110年 - 110 國立臺灣大學_碩士班招生考試_電機工程研究所乙組:電路學#101166
> 申論題
1. a) Please explain what is the Thevenin's theorem [5] and provide the proot of that. [10]
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2. Use superposition to find Vl in the circuit of Figure l. [15]
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3. For the circuit shown in Figure 2 with input voltage . please determine the output voltage Vo under the following conditions: a) the op-amp is ideal [5]: b) the op-amp is not ideal and has the following paraneters: input resistance Ri-500kΩ. output resistance Ro.=200 Ω. and voltage gain Av.=2x 104. [15]
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4. A sinusoidal AC voltage source is supplying the power to a serics connected RLC network with R= 0.2Ω. L= 20 μ H. and C= 5 μ H. Please determine the expression of energy. EL(t). stored inside the inductor L if the firequency of the voltage source is: a) 60Hz: b) 16kHz. [10]
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5. For the circuit shown in Figure 3. aI Ω resister is shorted by closing the switch at t=0. Please determine the inductor current [20]
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6. The s-domain transfer function of'a complex network can be expressed as:. Please draw the bode plots (both magnitude and phase) of H(s). Please clearly mark those critical points and the slopes of those curves. [20]
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9. (10%) Find the steady state of output voltage vo(t) in the given circuit using the superposition technique.
#442628
b. Please design a compensation circuit to achieve the unity power factor operation. Show your solution and show its circuit diagram. (5%)
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a. Determine the total current and the plant power factor.(5%)
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(5%) (b) Determine its input to output voltage transfer ratio (Vo/Vi) in terms of the duty ratio D.
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(5%) (a) A buck converter with coupled inductors, with a duty ratio D and in continuous conduction mode is shown in the following figure. Determine its voltage stress imposed on switch S1 and diode D1.
#442624
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110年 - 110台灣聯合大學系統_碩士班招生考試_電機類:電路學#104515
110年 · #104515
110年 - 110 國立臺灣大學_碩士班招生考試_電機工程研究所乙組:電路學#101166
110年 · #101166
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