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A 1.3-µm lightwave system uses a 50-km fiber link and requires at least 0.3 µW at the receiver. The fiber loss is 0.5 dB/km. Fiber is spliced every 5 km and has two connectors of 1-dB loss at both ends. Splice loss is only 0.2 dB. Determine the minimum power that must be launched into the fiber.
A terrestrial radio link transmits a CDMA signal from a base station using a spreading code with a chip rate of 1.0 Mchips per seconds. The message data rate of the signal is 10 kbps.
Show that a linear dependent current source controlled by a voltage appearing across an element in parallel with the dependent source is equivalent to a resistor. Determine the value of the resistance in terms of the parameters of the dependent so..
In a swamped common-emitter BJT amplifier, as shown below, if Vcc = 12 V, R1 = 8.2 k , R2 = 10 k , Rc = 500 , RE = 1 k , VBE = 0.7 V, and = 100, what is the transistor's emitter current
The dissociation energy of a carbon-bromine bond is typically about 210 kJ/mol. What is the maximum wavelength of photons that can cause C-Br bond dissociation?
Develop a register file that has 8 5-bit registers. The user can read or write to any of the 8 locations. Develop a state machine that causes the ALU to perform the operations and store the results to the registers.provide de VHDL code ths\is
A new 1.5-V AA battery delivers 40 kJ of energy during its life time. How long will the battery last in an application that draws 10 mA continuously. Assume the battery voltage is constant.
A wire of radius 1.2 mm carries a current of 2.5 A. The potential difference between points on the wire 44 m apart is 8.6 V. What are the resistivity of the material of which the wire is made.
Explain the major differences between a motor and a generator. Explain in detail how the simple motor works and be sure to include the functions of the reed relay and transistor.
In a step-down converter, consider all components to be ideal. Let v_0 = V_0 be held constant at 5 V by controlling the switch duty ratio D. Calculate the minimum inductance L required to keep the converter operation
Use a 5nF capacitor to design a series RLC bandpass filter in series. the center frequency of the filter is 8kHz, and the quality factor is 2. perform the analysis in Pspice and graph the transfer function on the y axis vs.
A 208-V Y-connected synchronous motor is drawing 50 A at unity power factor from a 208-V power system. The field current flowing under these conditions is 2.7 A. Its synchronous reactance is 0.8Ω. Assume a linear open-circuit characteristic. Fi..
Suppose that a current x(t) = e^-0.5t for t > or equal to 0, and zero otherwise is applied to a discharged capacitor of capacitance C =1F at t = 0 sec. What would be the voltage in the capacitor at t= 1 seconds
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