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A transformer is needed that will cause an actual load resistance of 25Ω to appear as 100Ω to an ac voltage source of 240 V rms. Draw the diagram of the circuit required. What turns ratio is required for the transformer? Find the current taken from the source, the current owing through the load, and the load voltage.
The desired signal at the output of the amplifier is 10 dBm, and the signal level applied to the fiber connector at the head end is 10 dBm. What should the gain of the amplifier be to have 10 dBm at the output of the neighborhood amplifier
1) Modern technology has produced a small 1.5-volt alkaline battery with a nominal stored energy of 150 joules. For how many days will it power a calulator that draws a 2-mA current 2)The current entering the positive terminal of an element is
the current i 2t2 - 1 a 1le t le 3 s is flowing through a certain circuit element. a if the element is a 4 h inductor
objective practice inheritance and using pointers. create a program that tests the members of the resistor class and
(1) check a diode out with a regular ohm meter (2) Give an example of where a half wave, full wave or bridge rectifier is used. (3) What sizes of transformers are used for power lines
1. A sinusoidal waveform is described by the equation: v(t) = 20V sin(120pit) pi = 3.1416 What is the value of the frequency 2. A sinusoidal waveform is described by the equation
A "ferrite" having a relative permeability of 50 H / m, that operates with flux densities sufficiently small, may be considered a single material. If the magnetic flux density in the material is B = 0.05 T, H and M. halle How to compare the values
Let the probability of a bit error be p, and the length of a data frame be N. Find the probability of 1, 2, 3, and 4 bit errors occurring in the frame. a) Tabulate the results for N = 1000, 10000, and 100000 bits, for p = 10-6, 10-8, and 10-14
What resistance must be connected in series with a heater rated at 150mA with hot resistance of 320 ohm in order to operate it safely from a 117-V source. What power rating must this resistor have
Use two different criteria for determining the effective bandwidth of e^(-t)u(t). Ad the bandwidth, use the frequency at which the amplitude response drops to 1% of its peak value (at w=0). Next use the 99% energy criterion for determine the band ..
Interface TTL logic to 120 VAC lamp. In this part of the lab, you will interface lowpower solid state electronics to the "outside world" by switching the 120 VAC lamp on and off using the AND gate from the previous experiment.
Describe the circuit's response to a 4 Vpp sinusoid. Measure its time constant and describe the circuit's response to a 100 Hz, 10 Vpp square wave centred on 0 V.
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