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Design a feedback amplifier to supply a current to an LED. Use the configuration shown in given Figure where RL is replaced by the LED.
(a) Assuming an ideal op-amp is available, design the circuit such that the diode current is Io = 3 × 10-3 Vi where Vi is in the range 0 to 5 V.
(b) If Vi = 5 V, what is the error in diode current if the op-amp has a finite gain of Ag = 103 mA/V and hF E = 80?
What would be the minimum allowable sampling rate for a pulse-duration modulator if it is required to handle a baseband frequency range from 50 Hz to 10 kHz
A factory is to be supplied with 408Y/277 3 phase, 4 wire electrical service. The total estimated single-phase load is 25 kW, at .9 lagging power factor. The total estimated three-phase load is 250 kW at .85 lagging power factor.
The magnetic field produced in the air gap of an induction motor by the stator windings is given by B=Bm cos(wt-2theta) in which theta is angular displacement in the counterclockwise direction as illustrated.
The design of the amplifier shall be performed for the Fairchild Q2N3904 NPN Transistor. Specifications can be obtained from the datasheet for the Fairchild Q2N3904 and are typically given in a variety of ways. Minimum and maximum operating condit..
1. Compare a script tool such as Matlab to a block tool like Simulink and how you can use them efficiently. 2. Convert the designed prototype filter to highpass filter with cutoff frequency f_C=10,000 Hz.
A load consisting of a 480 ohms resistor in parallel with a (5/9) uF capacitor is connected across across the terminals of a sinusoidal voltage source Vg, where Vg=240cos5000t V. a) What is the peak value of the instantaneous power delivered by the..
Determine the turns ratio of each transformer and the line current at the 120 kV side.
Starting from the expression for the MOSFET unity-gain frequency, fT=gm/2*pi*(Cgs+Cgd) and making the approximation that Cgs>>Cgd and that the overlap component of Cgs is negligibly small, show that for an n-channel device fT=3*un*Vov/4*pi*L^2
Perform a logical shift right by 4 positions on each of the following unsigned numbers to form a 12-bit result: 100101010000 and 000101001000. In each case, does the result exactly represent division by 16?
Determine the maximum raw instantaneous data rate that can be provided to a single user in EDGE, assuming that a single time slot on a single GSM channel is available.
A 300 W resistor is connected across the 300 Wantenna input of a television receiver. The bandwidth of the receiver is 6 MHz, and the resistor is at room temperature (20oC). Find the noise power and noise voltage applied to the receiver input.
A synchronous motor has a per-phase voltage of 220V and a synchronous reactance of 10. (a) If it draws a total input power of 7.5kW at a torque angle of 30 deg, calculate the per-phase induced voltage, input current and power factor.
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