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1 sketch a zero-crossing detector and describe its theory of operation2 how can i prevent a noisy input from triggering
1 you are going to mass-produce a circuit that is supposed to have a dc output voltage between 3 and 4 v what kind of a
1 how does a sinusoidal oscillator produce an output signal without an input signal2 which oscillator is used for many
1 to produce oscillations of a precise and reliable frequency what kind of oscillator is used most often2 the 555 timer
1 what does pulse-width modulation mean what does pulse-position modulation mean illustrate your explanation by
if the regulated output voltage is 10 v in fig 22-16 what is the load resistance where current limiting starts what is
1 if the line regulation is 3 percent and the low-line voltage is 16 v what is the high-line voltage2 a power supply
1 when a bridge rectifier and a capacitor-input filter drive a voltage regulator the capacitor voltage during discharge
1 the lm7815 is used with an input voltage that can vary from 18 to 25 v what is the maximum efficiency the minimum
1 if the output load current of the lm7805 u3 is 100 ma what is the approximate peak-to-peak input ripple voltage at
1 the required output voltage of the lm317 u1 needs to be 10 v disregarding the iadj current what value of resistance
1 what are the three basic types of switching regulators which one steps the voltage up which one produces a negative
1 what is the difference between the lm7806 and the lm79122 explain what line and load regulation mean should they be
1 explain the process of global warming2 define the term albedo and explain the features of the earths albedo refer to
1 comment on the energy efficiency impact on the environment2 using the case study 210 as guideline try to quantify the
1 what are the main environmental impacts of energy generation and utilization2 explain the global warming effect3
1 calculate how many kilograms of green wood produce the same amount of energy as 1 kg of dry wood calculate how many
1 enumerate and describe briefly the fundamental energy sources on earth2 explain the nature of biomass energy3
1 what is the relationship among the use of renewable energy sources environment and sustainability2 what is the
calculate mass energy entropy and exergy balances for the following devicesa an adiabatic steam turbineb an air
1 saturated ammonia vapor at -25degc is compressed isentropically to 762 bar determine the temperature after
assume that superheated steam at 25 bar and 400degc expands isentropically to 622 bar determine the temperature after
1 argon is compressed from standard conditions up to a pressure of 5 bar assume polytropic compression and calculate
1 define the boltzmann constant2 using appropriate equations transform the temperature of 100c in degrees kelvin
1 what is a conservative force2 explain the terms absolute gauge and vacuum pressure3 define the notion of temperature