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An npn differential amplifier with I = 0.5 mA, Vcc = VEE = 2.5 V, and Rc = 8 kohm utilizes BJTs with B=100 and VBE=0.7 V at Ic = 1 mA. Assuming that the bias current is obtained by a simple current source and that all transistors require a minimum VCE of 0.3 V for operation in the active mode, find the input common-mode range.
Suppose a pure Si crystal has 5 × 1028 atoms m-3. It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and holes. Given that ni =1.5 × 1016 m-3.?
A new type of Schottky diode is optimized for low-voltage applications. It has typical forward voltage drop of 0.2 V, but its leakage current can be as high as 80 mA. It is being considered for a 12 V to 2.5 V converter with 50 W load.
A series type Ohmmeter uses a 50 ohm, 1mA PMMC the internal battery voltage is 3V the desired scale marking for half scale deflection is 2000 ohm. Calculate:- - Value of R1 & R2
A small buck converter has 24 V input and 12 V output. The transistot has Rds(on) = 0.1 Ohms. The diode is modelled as a 1 V drop. Each device has Rtheta(ja) = 40 K/W and Tjucntion
A three-phase, 60 Hz, six pole, wound rotor induction motor draws 10kw when driving its normal load. It draws 700 W when the load is diconnected. The rotor and stator copper losses under normal load are 295 W and 310 W respectively.
Let X be the outcome for rolling a die and let Y be the outcome for rolling a second die. X & Y are the number of dots that appear for each die. find the joint probability for the event X less or equal to 3 and Y greater than 3
any noise will pass straight through to the ADC subsystem, introducing measurement error. You have two choices to mitigate this: SW filtering and HW filtering. Either way around, you need a HW anti-aliasing (low pass) filter following the output.
The current flowing through a 300-mH inductance is given by 5e(-200t). Find expressions for the voltage, power, and stored energy. Sketch the waveforms to scale for 0
We will make the follwoing probability assumptions: When team A plays team B, the probability that team A wins is given by: P(A wins) = \(([seed(B)+3]^2)/([seed(A)+3]^2 +[seed(B)+3]^2) \)
Reduce the two functions given below and implement them using fewest 8x2 ROM's. Draw a neat labeled diagram showing interconnection between the ROM's address and data lines, and content of each ROM.
In a certain system, an electrical heating element was found to increase the temperature of a piece of metal 7o for each amp of current. The metal expands 0.004 in./deg and pushes on a load sensor that outputs 1 V/0.003 in.
The mobility of electrons in certain semiconductor is 1400 cm2/ (volt x sec). At room temperature (T=300K) calculate the diffusion length of electrons. What are the assumptions used in low-level injection of carriers
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