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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.
A photocell with a 35-ms time constant is used to measure light flashes. How long after a sudden dark-to-light flash before the cell output is 80% of the final level
(1) If you have a transformer that is not in a circuit, how can you tell/determine what the ratio is (2) How do you tell if a diode is forward or bias. How much voltage is assumed dropped across a forward biased silicon diode. Reversed biased sili..
Consider a continuos time LTI system with step response given by ys(t) = tu(t) - (t - 2)u(t-2). Determine the output y(t) if the input to the system is given by x(t) = u(t) - u(t - 2) using complex domain (not time domain) analysis techniques.
If a circuit is comprised of a load and multiple switches wired in series with the load and the load is operating, is it possible that one or more of the switches is in the open position
Two loads are connected in parallel. The voltage across the loads is 8kVrms. The first load is rated at 12 kW with a 0.6 lagging power factor. The second load is rated at 20 kVA with a 0.8 lagging power factor. Find the complex power of the two lo..
The power dissipated in the resistor is 62 W when connected to a 10V source. Find the total dissipated power when the same resistor is connected to a 5V source.
The four alkaline batteries cells store a total of 200 Watt-seconds of energy. If the cassette player is drawing a constant 10mA from the battery pack, how long will the cassette operate at normal power
Design an analog computer circuit (using minimum resistor values of 10 k ohms ) to obtain the summing (adder) function. Vo = -v1 -v2 +v3
Explain the term 'multiplexing' in general and describe why it is particularly important in the transmission of PAM signals and describe the main factors upon which the maximum data rate over a channel depends.
A toroid is fille with liquid oxygen that has a magnetic susceptibility of 4*10^-3. The toroid has 2000 turns and carries a current of 15 A. Its mean radius is 20 cm, and the radius of its cross section is 8 mm. (a) What is the magnetization
Two dc motors are compared. the first one is a 4hp dc motor which draws a current or 0.7A when the field is connected to a 150V source. the second, a 600 hp motor draws a field current of 5A when the field is connected to a 300V dc source.
obtain the rotational losses of a universal motor if you are only given the impedance, RPM, voltage,poles, frequency, current and pf Basically I need to solve for the shaft torque and efficiency but can't get my Pout value without the rotational l..
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