Answer: AC Voltage Source: Oscillation Around or Above Ground?

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In summary, a function generator plugged into the wall will oscillate around ground or above ground depending on the source. Depending on the type of function generator, it can produce sine and square waves centered at ground or logic pulses that vary from ground to a preset voltage. These logic pulses are suitable for testing purposes.
  • #1
thoughtgaze
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So if my input is an alternating voltage source, some sort of function generator plugged into the wall... will it oscillate around ground or will it oscillate above ground? Hope this question makes sense.
 
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  • #2
thoughtgaze said:
So if my input is an alternating voltage source, some sort of function generator plugged into the wall... will it oscillate around ground or will it oscillate above ground? Hope this question makes sense.

Depends on the source. Most lab function generators let you specify Amplitude, Frequency, and DC Offset.
 
  • #3
It's very likely that the signal generator will be grounded, if so then the signal will oscillate above and below the ground.
 
  • #4
A signal generator will produce sine and square waves that are centered at ground and vary equally on either side of ground.

A function generator can do this too, but it can also generate logic pulses that vary from zero volts (ground) to some figure like plus 5 volts, which you can preset.
These pulses have the right voltage to drive logic circuitry for testing purposes.
 

1. What is an AC voltage source?

An AC voltage source is a type of electrical power source that produces an alternating current (AC) output. This means that the polarity of the voltage constantly changes, resulting in a sinusoidal waveform.

2. What is oscillation in relation to an AC voltage source?

Oscillation refers to the repetitive variation of an electrical signal or voltage around a certain point. In the case of an AC voltage source, the voltage oscillates between positive and negative values as it alternates.

3. What does it mean for an AC voltage source to oscillate around or above ground?

An AC voltage source can oscillate around ground when the voltage alternates between positive and negative values but never reaches zero. On the other hand, oscillating above ground means that the voltage oscillates between positive values and zero, but never goes into the negative range.

4. How is an AC voltage source different from a DC voltage source?

A DC voltage source produces a constant, unidirectional flow of current, while an AC voltage source produces an alternating current. In terms of waveform, a DC voltage source has a flat, constant voltage output, while an AC voltage source has a sinusoidal waveform.

5. What are some common applications of AC voltage sources?

AC voltage sources are used in a variety of applications, such as powering household appliances, electric motors, and electronic devices. They are also used in power distribution systems, where high voltage AC is converted to lower voltage AC for use in homes and businesses.

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