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(1) For the three transistor configurations namely, the common-eitter, the common-collector, and the common-base, compare the voltage gain and the current gain for each configuration.
Which configuration is the most popular and why?
(2) Why is it that when using transistors as switches the emitter resistor is always omitted?
What is the reason we use an emitter resistor when implementing amplifiers?
A generator provides the following voltage signal: v(t) = 2 + 3 sin(100pi) + 4 cos(250pi). Find the average value of the function. Note: pi = 3.1416 in this equation.
Determine the gain K so that the phase margin is 45 degrees. For the gain K selected in part (a), determine the gain margin. Predict the bandwidth of the closed-loop system.
A 480 V permanent magnet ac motor is consuming 10 kW at power factor 0.80 lagging. Its speed is 1800 rpm. The winding resistance is 0.5 ohms per phase. Core losses are 100 W.
Operational amplifier - Finding the offset voltage, An operational amplifier has a gain of 20. The input voltage is 125mV and the input bias current is zero.
a) Write the system of linear equations in the form of Ax = b: (b) Use Guass-Jordan method to find A inverse (c) Use A inverse to solve the system of equations. -2x1 + x2 +x3 = -12 4x1 + 2x2 + 4x3 = 7 -x1 + x2 + 2x3 = -3
A tractor-trailer truck driver friend often delivers to companies that do not have a fork truck or loading dock. She wants to install a lift-gate on her trailer so she can load and unload her truck without a fork truck.
A series of combination having R=2Mohm and C=0.01 UF is connected across a D.C. voltage source of 50V. Determined capacitor voltage and charging current after 0.02s, 0.04s and 1 hour.
A square wave has a max value of 22 volts, a min value of -46 volts, and a frequency of 44 Hz. Note that it is not centered around the t-axis. what is its rms voltage?
Let a crappy voice channel occupy 1kHz. To ensure no interefence between channels due to nonideal bandpass filters add a 3.0kHz spacing between channels. How many simultaneous voice channels can you have if allocated a 87MHz bandwidth total
Evaluate the component selection for the differentiator and integrator amplifiers and their impact on the mahematical equation for each. Items for you to consider and discuss are Do you observe any limitation factors for the component parameters an..
An alarm is powered by 120 VAC, and the on/off state of the alarm is controlled by an EM relay. Design the interface between a computer output port and the EM relay. The dropout voltage is 3.5 V, and the coil current needs at least 100 mA. Limit t..
The general expression for an idealized uniform plane water wave propagating in the +x direction is h(x,t) = Acos(wt - kx + phi) m where h represents the height of water particles at the water surface above the unpurturbed or quiescent water surface ..
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