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A Full-wave rectifier circuit uses two silicon diodes with a forward resistance of 20Ω each. A dc voltmeter connected across the load of 1kΩ reads 55.4volts. Calculate i) IRMS, ii) Average voltage across each diode,iii) Ripple factor, and iv) Transformer secondary voltage rating.
If the SNR must be greater than 40 dBm, how far backed-off must the amplifier operate. Assume noise comes from a third-order intermodulation between two interferers with the same power level as the wanted signal.
a) Find the voltage across the inductor for t > 0. (Assume the passive sign convention.) b) Find the power (in microwatts) at the terminals of the inductor when t = 200 ms. c) Is the inductor absorbing or delivering power at 200 ms
Assume an analog (1st Generation) dual mode mobile phone that is designed to operate in both the 900 MHz and 1900 MHz band which has been allocated for cellular networks. The mobile phone is using a superheterodyne receiver with a 500 MHz IF for b..
doped silicon at 300 K contains 10^16 acceptor atoms/cm^3. Find the hole concentration and the free-electron concentration.
Derive and graph the electric field based on V-bi( built in Potential). Derive the depletion width (w) from built in potential and equilibrium charge equation. graph Depletion width and E-feild in forward bias.
Design an XOR gate using standard CMOS logic and with pass-transisitor logic and determine the number of transistors (NMOS and PMOS) required for each implementation.
The unloaded output of a sensor is a sinusoid at 200 Hz and 5V rms amplitude. Its output impedance is 2000+600j. If a 0.22 μf capacitor is placed across the output as a load, what is the sensor output rms voltage amplitude
A piston-cylinder device contains carbon dioxide CO2 (molar mass = 46 g/mol) as shown in the figure. The cross-section area of the piston is 0.25 m2 and the initial cylinder height is 50 cm. CO2 is initially at 40 bar and 500 oC (state 1).
Design a vending machine controller. The machines sells coke and pepsi. The cost is 25 cents, accepting dimes and nickels. When a dime is inserted the input D is asserted. When a nickel is inserted the input N is asserted.
A uniform electric field exists in the region between two oppositely charged plane parallel plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate
Explain briefly why a capacitor can block DC voltage. How might you use this feature in a design. Explain why the impedance Zeq of a parallel RC circuit decreases as the frequency increases.
What is the fundamental frequency of the spectrum of the square wave? What is the magnitude of the fundamental frequency component of the spectrum of the square wave?
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