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A MOSFET transistor is being used as a converter switch in a 100v system. It is switching at 50 KHz and has a linear transition time of 3us. The full load current is 40 amps.- How much average power is being wasted due to switching?- If this is the only loss mechanism, what is the system efficiency?- What transition times would be needed to achieve an efficiency of 90%?
- If the frequency is doubled, describe the change in efficiency?
1. Provide 3 ways for creating proto-types of an electronic circuit. 2. Explain briefly, in outline form, and in your own words, the procedure for creating a single-sided, PCB (Printed Circuit Board), using the etching procedure.
the -3 dB frequency for low pass Butterworth filter is 2.5 kHz. The stop band begins at 3.8 kHz, with an attention of 35 dB. Determine the minimum order of the filter if the sampling rate is 8 kHz
What is the channel capacity for a channel with a 300 Hz bandwidth and as S/N = 3? 2nd problem: Given a channel with a 50 kHz bandwidth and a S/N = 127, determine:
Design a 1024x16 RAM using the 256x8 RAM blocks and neccessary combinational circuit. Note that, 256x8 RAM block has 8 bit data (DATA), 8 bit address (ADRS), chip select (CS), read/write (R/W) inputs and a three-state output bus.
Analysis of discrete time waveforms in z domain, A discrete time domain signal x(n) - u(n) - u(n-10) is decomposed and plotted. It is then examined in the z domian by appropriate transformation and algebraic manipulation.
Work out the following problem: If the analog signal to be quantized is a sinusoidal waveform, that is, x(t) = 6 sin (6283t), and if the bipolar quantizer uses 8 bits, determine 1. Number of quantization levels; 2. Step size of the quantizer ; 3. ..
The voltage across the load must remain between 4.7 and 5.0 V for all values of load current. Come up with (draw) a voltage-divider network to supply the load. You may assume that resistors of any value desired are available.
Compute the Transfer Equation, The questions are for the equation: y"(t) + 6y'(t) + 34y(t) = 2x'(t) + 11x(t)
Suppose that a family of logic gates considers the output ranges of [0 - 0.2V] as "0" and [3.1V-3.3V] as "1". What are the reasonable input ranges for "0" and "1"? (a) "0": [0.1 - 0.4V], "1": [2.3V - 3.3V]; (b) "0": [0-0.3V], "1": [2.8V - 3.0V]; (..
Transfer function : key informaiton, A linear time-invariant discrete-time system is excited by the input x[n] = d[n] + 2u[n-1] (d represents δ(delta)). The resulting output response with zero initial conditions is y[n] = ((0.5)^n * u[n]). De..
In a 50 KVA, Y connected, 440 V, 3 phase, 50 Hz alternator, the effective armature resistance is 0.25 ohms per phase. Synchronous reactance is 3.2 ohms per phase. Determine at rated load and unity power factor,
Sketch the theoretical torque vs. speed characteristics for a series, shunt, and compound connected DC motor. Describe what will happen if a series motor is run under no load conditions. describe what will happen if a shunt motor experiences a lo..
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