Search for question
Question

Given is a first-order low-pass filter.

Determine the magnitude of the gain at the transit frequency, give your answer in dB, and write your answer without the unit.


Most Viewed Questions Of Analog Electronics

1. Let us plot the Shockley diode equation. Suppose you are required to use In () as the vertical axis and V as the horizontal axis. Plot the result qualitatively and correctly label relevant parameters, i.e. axis intercepts and polynomial coefficients. Between a forward bias of 0.65 V and 0.75 V, how much does In / increase?


(5 pts.) Given an analog output signal whose voltage should range from 0 to 10V, and an 8-bitdigital encoding, provide the encodings for the following desired voltages: (a) OV, (b) 1V, (c) 5.33V,(d) 10V, what is the resolution of the conversion?


The Voltage across the Capacitor is given by the formula: V_{c}=V_{i n}\left(1-e^{-\frac{t}{R C}}\right) Using the formula, calculate the time taken for the capacitor to charge to 1/2Vin Given that C=120NF R=47kOhms. Give your answer in milli-Seconds.


11) The cut-off frequency for an RC Low pass filter circuit is the frequency atwhich: R=\frac{1}{2 \pi f C} Calculate the cut-off frequency using the following values for R and C: R=4.7kOhmsC=0.22MicroFarads. Give your answer in Hz


Fig Q3(al) is a load line diagram of the diode and resistor circuit shown schematically in Fig Q3(a2). What is the value of RL and the maximum value of Vs of the circuit?[- Fig Q3(b) is a full wave rectification circuit. Sketch the input and output voltage waveforms (Vin and Vout) using the fact that Cs=1 µF, RL = 10KOhm, 1KHZ – AC signal and 10V peak to peak value of theVin-[7] Now replace the smoothing capacitor Cs with a value 0.01 µF and on the same figure that you made above (where you have Cs=1 µF) add a second output waveform to the sketch for this situation.[3] Explain why the output waveform has been modified as a result of changing the value of the smoothing capacitor.[2] Sketch a schematic view of a possible circuit design for single stage amplifier circuit based on a single stage field effect transistor with the following characteristics: i) Voltage gain ~ 1 ii) Large input impedance iii) Small output impedance


A Keyboard instrument having an output impedance of 200 Ohms is mistakenly plugged into the Low impedance microphone input socket on an amplifier. If the microphone input has an input impedance of 3002. Calculate the resulting signal loss Vo/Vin.


Which of the following statements about transistor operation are true? 1The main current flow is from the base to the emitter The main current flow is from the Collector to the Emitter 3The current flowing in the base is greater than the current flowing in the collector 4The current flowing in the base controls the current flowing in the collector 5The current flowing in the emitter is the sum of the base current and collector current 6The current flowing in the emitter is the collector current minus the base current


The exponential Fourier series for someperiodic signal is given by v(t)=\sum_{n=-\infty}^{\infty} \frac{5|n|}{n^{2}+1} \cdot e^{j 2 \pi 6000 n t} n=-00if this signal is passed through a band-pass filter with cutoff frequencies fa =10000 \mathrm{HZ} \text { and } f_{C U}=20000 \mathrm{HZ} \text {. } Plot the spectrum of the input signal from -20000 HZ to 20000 HZ. b. Write down the equation for the output signal and plot the spectrum of the output signal. c. How much power is contained in the input signal between -20000 HZand 20000 HZ and how much power is contained in the output signal? d. What is the output signal bandwidth?


Given is an OpAmp which is connect to a square-wave generator. The output voltage of the OpAmp follows a first-order response, and the rise-time is measured to be 1us. Determine the cut-off frequency, give you answer in Hz, and write your answer without the unit.


Question 4: In the series-shunt feedback amplifier shown in Figure 3, the transistors are biased with ideal current-sources ₁ = 0.1 mA and I₂ = 0.1mA, the devices operate with VBE= 0.7V and ₁= B₂ = 120. The input signal V has a zero DC component. Resistances are R = 1000, R₁ = 1kN, R₂ = 10kN, R₁ = 1kN. b) Find the DC emitter current in each of Q1 and Q2 and the DC voltage at the emitter of Q2. c) Sketch the open-loop circuit without the DC sources. Derive expressions for A,Ri, and Ro, and find their values. [4 marks] d) Find the closed-loop gain Aƒ = V/V, the input resistance Rin, the output resistance Rout. a) If the open loop gain is large, what do you expect the closed-loop gain Af = V₁/V₂ to be? Give both an expression and its approximate value.