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Can a single resistance value adequately describe the LED's current versus voltage characteristic? Explain.
How can the resistance be determined from a Voltage versus Current plot? If you had to...
How can the resistance be determined from a Voltage versus Current plot? If you had to guess at what the resistivity of a 50% nickel & 50% Silver alloy was, what would number would you come up with? rho = _____? (best guess) see page 1 for data. (write your answer on page 2 as well for reference during the lab) What are the units of the thermal coefficient of resistance (alpha)? How hot would Copper have to get so...
Rearrange the equation current = voltage/resistance to express resistance in terms of current and voltage. Then...
Rearrange the equation current = voltage/resistance to express resistance in terms of current and voltage. Then solve the following: A certain device in a 100-V circuit has a current rating of 30 A. Part A What is the resistance of the device how many ohms)? Express your answer to two significant figures and include the appropriate units. HAO? R= Value Units Submit Request Answer
1. Draw the current-voltage characteristic of a Zener diode and show the forward and reverse biasing...
1. Draw the current-voltage characteristic of a Zener diode and show the forward and reverse biasing areas. Mark the "Zener voltage" value on the graph. Explain how the voltage on the Zener diode will vary when it is biased with a voltage higher than the Zener voltage. 2. Explain the operating principle of a full-wave bridge rectifier by clarifying which diodes becomes active during the positive and negative cycles of the input signal.
Q1. (a) Draw the voltage-current characteristic curve of the GTO, and explain its operating principle. What...
Q1.
(a) Draw the voltage-current characteristic curve of the GTO, and
explain its operating principle. What are the typical ranges of the
turn off gain and the switching frequency of the GTO?
(b) MAX724 buck converter is shown in Figure Q1. The input
voltage is chosen as 25V, and the switching frequency is 100
?HZ.
(i) Calculate the duty cycle, peak-to-peak inductor ripple current,
and peak-to-peak output ripple voltage.
(ii) Calculate the minimal load current such that the inductor
current...
Draw and explain the gain frequency characteristic of a resistance–capacitance-coupled amplifier. Reference should be made to...
Draw and explain the gain frequency characteristic of a resistance–capacitance-coupled amplifier. Reference should be made to mid-band frequencies and to cutoff points. An amplifier has an open-circuit voltage gain of 800, an output resistance of 20 Ω and an input resistance of 5 kΩ. It is supplied from a signal source of e.m.f. 10 mV and internal resistance 5 kΩ. If the amplifier supplies a load of 30 Ω, .
Esquivalent Resistance Current throughs R2 5. (10pts) A student collects a set of Current and Voltage...
Esquivalent Resistance Current throughs R2 5. (10pts) A student collects a set of Current and Voltage data that is shown in the table below. What is the experimental value of the resistance for the coil used in this measurement? Current Voltage (A) (V) 0.02 2.3 0.04 4.7 0.06 7.1 9.2 Experimental Resistance
3 Capacitor Discharging Current The capacitor voltage versus time in a discharging series RC circuit, as...
3 Capacitor Discharging Current The capacitor voltage versus time in a discharging series RC circuit, as shown in the Background Information Figure 2, is Vo(t) = V, expl-Roc), +20 (3) where V, is the source voltage in Volts, exp(x) is the exponential functione, Rp is the discharging resistance in Ohms (N), C is the capacitance in Farads. To = Rp is the discharging time constant in seconds. Derive an expression for the capacitor discharging current versus time, .(t), in terms...
separately excited series, shunt, compound DC motor: *Describe how does decreasing the field current IF affect...
separately excited series, shunt, compound DC motor: *Describe how does decreasing the field current IF affect the speed versus voltage characteristic and constant K1 of a separately-excited dc motor. K1=(n2-n1)/(E2-E1) *Describe how does decreasing the field current IF affect the torque versus current characteristic and constant K2 of a separately-excited dc motor? k2=(T2-T1)/(I1-I2) *Briefly describe how the speed varies as the mechanical load applied to the series motor increases, i.e. as the motor torque increases.
c) Using the data included for Solenoid 1 in table 1, graph Voltage versus current to...
c) Using the data included for Solenoid 1 in table 1, graph Voltage versus current to obtain the resistance of the coil. You did something similar to this in one of your first lab exercises. Include the graph with this data. Apply a linear fit to the data to obtain the resistance. Resistance of Solenoid 1 = Table 1: Data for Solenoid 1. Voltage (V) 0 0.2 0.6 1.0 1.3 1.6 1.9 2.5 Current (A) 0 0.11 0.27 0.51 0.75...
The slope of a voltage vs. current curve is resistance. Does a small slope correspond to...
The slope of a voltage vs. current curve is resistance. Does a small slope correspond to a large or a small resistance? Explain briefly.
How can the resistance be determined from a Voltage versus Current plot? If you had to guess at what the resistivity of a 50% nickel & 50% Silver alloy was, what would number would you come up with? rho = _____? (best guess) see page 1 for data. (write your answer on page 2 as well for reference during the lab) What are the units of the thermal coefficient of resistance (alpha)? How hot would Copper have to get so...
Rearrange the equation current = voltage/resistance to express resistance in terms of current and voltage. Then solve the following: A certain device in a 100-V circuit has a current rating of 30 A. Part A What is the resistance of the device how many ohms)? Express your answer to two significant figures and include the appropriate units. HAO? R= Value Units Submit Request Answer
1. Draw the current-voltage characteristic of a Zener diode and show the forward and reverse biasing areas. Mark the "Zener voltage" value on the graph. Explain how the voltage on the Zener diode will vary when it is biased with a voltage higher than the Zener voltage. 2. Explain the operating principle of a full-wave bridge rectifier by clarifying which diodes becomes active during the positive and negative cycles of the input signal.
Q1.
(a) Draw the voltage-current characteristic curve of the GTO, and
explain its operating principle. What are the typical ranges of the
turn off gain and the switching frequency of the GTO?
(b) MAX724 buck converter is shown in Figure Q1. The input
voltage is chosen as 25V, and the switching frequency is 100
?HZ.
(i) Calculate the duty cycle, peak-to-peak inductor ripple current,
and peak-to-peak output ripple voltage.
(ii) Calculate the minimal load current such that the inductor
current...
Esquivalent Resistance Current throughs R2 5. (10pts) A student collects a set of Current and Voltage data that is shown in the table below. What is the experimental value of the resistance for the coil used in this measurement? Current Voltage (A) (V) 0.02 2.3 0.04 4.7 0.06 7.1 9.2 Experimental Resistance
3 Capacitor Discharging Current The capacitor voltage versus time in a discharging series RC circuit, as shown in the Background Information Figure 2, is Vo(t) = V, expl-Roc), +20 (3) where V, is the source voltage in Volts, exp(x) is the exponential functione, Rp is the discharging resistance in Ohms (N), C is the capacitance in Farads. To = Rp is the discharging time constant in seconds. Derive an expression for the capacitor discharging current versus time, .(t), in terms...
c) Using the data included for Solenoid 1 in table 1, graph Voltage versus current to obtain the resistance of the coil. You did something similar to this in one of your first lab exercises. Include the graph with this data. Apply a linear fit to the data to obtain the resistance. Resistance of Solenoid 1 = Table 1: Data for Solenoid 1. Voltage (V) 0 0.2 0.6 1.0 1.3 1.6 1.9 2.5 Current (A) 0 0.11 0.27 0.51 0.75...
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