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Consider a 6 cm2 dye sensitised solar cell with reverse saturation current Jr=10-10A/cm2. When the solar irradiance is 1,000 W/m2, it produces an equivalent photo current/short circuit current of 15
Let x[n] be a signal and let y[n]=Σx[m], where m is from -∞ to n. If Y(jΩ) =cos2Ω, x[n] consists of exactly four impulses. What are their numerical strength and locations
If i were to have a plane wave in free space with the following E field intensity: E = 15cos(ωt + 10πz + θ) in the y direction V/m and H at t=0 z=1.15m is 0.02 A/m how can I find the in
Design a sequential circuit with two JK flip flops and one input, x_in. a) When x_in = 1, the state of the circuit remains the same, When x_in = 0, the circuit goes through the state transistions fr
A sequential circuit with two D flip flops, two inputs x and y, and one output z is specified by the following next state and output equations: A(t + 1) = xy + x'B B(t + 1) = y'A' + yB
Show how to build each of the following single- or multiple-output logic functions using one or more 74X138 or 74X139 binary decoders and NAND gates. (hint: Each realization should be equivalent to
The power required for traction at this velocity is 10kW. Assumed 10% drive train losses, and battery discharge efficiency is 80%. A 300V NiMH battery pack will be used for the Energy store with the
A stack controller is a digital circuit in a computer that implements last in firstout (LIFO) storage for temporary data. It operates analogously to a stack of plates where you can put a new plate o
Fins are used to enhance the cooling of an object. Fins are manufactured in a wide variety of shapes and sizes, and for a mass-product, it may be beneficial to optimize the shape of the fin. f
An absolute encoder is to be used for measurements that require a minimum resolution of 0.05 minute or arc. What is the number of bits required to achieve the specified resolution
A PMOS transistor has Vtp = -0.5V. As the gate voltage vG is varied from +2.5V to 0V, the transistor moves through all of its three possible modes of operation. Specify the value of vG at which the
In a balanced 3 phase system, the source is a balanced wye with an abc-phase sequence and Vab = 208<60° Vrms. The load consists of a balanced wye with a phase impedance of 8+j5Ω in parallel
A single, common-anode, 7-segment LED is connected to the Arduino Connector J1 through current-limiting resistors. The diagram in Figure 1 shows the mapping of the pins of the connector to the pins
Using Logisim, implement a 3-8 Decoder, both with gate level components and a Decoder component. Use input pins to control the select line inputs, and LEDs for the output display.
A combinational logic circuit has two control inputs, C1 and C2, two data inputs, A and B, and one output, Z. Design a logic circuit that performs the logic operations on the two data inputs as spec
Design a high-pass op amp filter with a high-frequency gain of -100 and a cutoff frequency of 1kHz. Resistors with values of 1kohm, 10khom, and 100kohm are available. Determine the capacitance and r
Given a circuit with applied voltage v(t)=14.14cos(ωt)(V) and a resulting current i(t)=17.1cos(ωt-25)(mA). Determine and draw the complete power triangle.
Write the equation for the voltage across the capacitor for all time t > 0 (that is, after the switch opens at t = 0). Assume that the switch has been closed a long time before t = 0 to determine
In an audio system, the microphone produces a voltage of 10mV which is connected by a cable to an amplifier with a voltage gain of 30dB. The cable introduces a loss of 5dB. Find the gain of the syst
A silicon step junction diode with NA acceptor atoms on the p side and ND donor atoms on the n side is fabricated. The diode is not ideal. What is the dominant current mechanism for forward applied
An ideal non-degenerate silicon step junction diode with an intrinsic level Ei exactly at mid band-gap is fabricated. Answer all questions related to this diode. a) If Vbi = 0.65V and NA=4ND, what i
An ideal n+/p diode has only the quasi neutral p region of length L illuminated with light such that GL electrons/cm3-s are generated uniformly throughout the region. There is no photo-generation oc
A silicon diode has a doping profile such that ND = ax3. What is the depth of the junction assuming the p side is uniformly doped with NA per cubic cm. Assume the x origin is at an ideal ohmic conta
an electric motor operates at 220V rms ,60 Hz, draws 20A rms, and has a power factor of 0.75 lagging. a) what is average power absorbed by the motor b) what value capacitor should be connected in para