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determine a small signal parameter gm,rpi of a transistor with parameters betta = 180 for bias current of I sub cq = 0.5mA
A silicon (ni= 10^10 cm^-3) p-n junction diode has a maximum electric field of -10^6 V/cm and a depletion layer width of 1 um. The acceptor density in the p-type region is four times larger than the donor density in the n-type region.
a certain ideal voltage generator is characterized as v(t) = 40 sin 377 t . If this generator is measured with a DC voltmeter, the instrument reads 12 volts, what is the rms value of this voltage waveform
The forward-bias current in a GaAs pn-junction at T = 300 K is ID = 15 mA. The reverse-saturation current is IS = 10^-19 A. Determine the required forward-bias diode voltage.
Find the magnitude of the electric field at all points in space both inside and outside the slab, in terms of x, the distance measured from the central plane of the slab. What is the field for x = 1.00 cm What is the field for x = 8.00 cm
A point charge of 20nC is located at (4,-1,3), and a uniform line charge of -25 nC/m lies along the intersection of the planes x=-4 and z-6. a) calculate D at (3,-1,0). B)how much electric flux leaves the surface of a sphere of radius 5 ,centered a..
A wafer 100mm in diameter is mounted in an electron-beam evaporation system in which the spherical radius is 40cm. Use Eq. 6.7 to estimate the worst-case varation in film thickness between the center and edges
A DC voltmeter is rated at 14 bits of resolution and has a full-scale input range of ±5V. Assuming the meter's ADC is ideal, what is the maximum quantization error that we can expect from the meter.
A separately excited dc generator produces 400 v at 1500 rpm under open circuit conditions. Find the induced emf if the speed changes to 2000 rpm. Assume the flux is constant.
Activation of a switch at t = 0 in a certain caused the voltage across a 20-mH inductor to exhibit the voltage response V(t) =4e-0.2t mV ( for t ≥ 0) determine i(t) for t ≥ o given that the energy stored in the inductor at t = ∞ is 0.64 mJ.
a carrier wave is frequency-modulated using a sinusoidal signal of frequency fm and amplitude Am. (a) determine the values of the modulation index beta for which the carrier component of the fm signal is reduced to zero. see the appendix for calcu..
Consider a circuit that is connected to a phasor of 120V/0 degrees. The circuit feeds a 10 ohm resistor on the "hot" lead and then the circuit branches. One branch has a 0.1 A /-300 degree phasor current source (oriented with "arrow oriented right..
an 8kg block is released from the rest on a frictionless incline of angle 60.if the speed of the box is 10m/s when it reaches to the ground what was the height of the initial point it was released
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