10- a) What must always be used with an Oscilloscope when making a measurement? b) How do you...

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Electrical Engineering

10-
a) What must always be used with an Oscilloscope when making ameasurement?
b) How do you read the amplitude (Frequency) of a signal fromthe waveform on an oscilloscope?
c) How do you calculate phase shift by measuring the time delaybetween zero crossings of two different signals?

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4.3 Ratings (857 Votes)

a One of the most powerful features of digital oscilloscopes is its ability to perform calculations on measurements By using this capability we can use an oscilloscope to measure parameters such as powerpower voltage x currentIt really is this simple when the load is resistive or static In fact in these cases you dont even need an oscilloscope All you need is a digital multimeter to make the voltage and current measurementsUnfortunately its not always that easy If a load is reactive for example there will be a phase difference between the voltage and current measurements and that must be taken into consideration when making measurementsTo make this measurement you can use an oscilloscope You use one channel to measure the voltage a second channel to measure the current and then program the scope to multiply the two measurements and create a third traceTo make this measurement there are a few things to consider First the rise and fall times of the voltage waveform may be quite fast even though the switching frequency may not be all that high Because of this the scope needs to have sufficient See Answer

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