Considering a short parabolic impulse as direct current?

In summary, the conversation discusses the possibility of considering a short impulse with only one polarity as a segment of direct current in a simple circuit for analyzing reflections. However, it is concluded that reflections cannot be discussed in terms of DC and the Impulse Response of the circuit should be considered instead. This can be obtained through direct measurement or Fourier Transform of the frequency response. The conversation ends with gratitude for the helpful answer.
  • #1
freddyfish
57
0
Is it possible to consider a short (20ns) impuls of only one polarity as a short segment of direct current in a simple circuit where the reflections are to be analyzed? If not, how should I treat this kind of voltage waves?

The voltage is obviously not constant, but I wonder if it is possible to use ordinary formulas for reflections etc.

Thanks
 
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  • #2
You can't discuss reflections in terms of DC. The essential point about a reflection is that there is a change, in time, in value of the signal - i.e. it's there because of non-DC components of the signal.
You need to be thinking in terms of the Impulse Response of your circuit, which you can obtain either directly or by measuring the frequency response (including phase information) and then a Fourier Transform.
 
  • #3
Thank you very much! Very good answer. :)
 

1. What is a short parabolic impulse?

A short parabolic impulse is a type of direct current that has a sudden increase in voltage and then quickly returns to its original level. It is often used in scientific experiments to simulate a quick burst of energy.

2. How is a short parabolic impulse different from other types of direct current?

A short parabolic impulse differs from other types of direct current, such as a steady or sinusoidal current, in its shape and duration. It has a distinct parabolic shape and is much shorter in duration.

3. What are the applications of a short parabolic impulse in scientific research?

A short parabolic impulse can be used in various scientific research studies, such as studying the response of biological cells to sudden bursts of energy or testing the durability of electronic components under quick voltage changes.

4. Are there any potential risks associated with using a short parabolic impulse?

As with any type of direct current, there is a risk of electric shock when working with a short parabolic impulse. It is important to follow proper safety protocols and ensure that all equipment is properly insulated.

5. How can I generate a short parabolic impulse for my experiment?

There are several methods for generating a short parabolic impulse, including using specialized equipment such as a pulse generator or creating a makeshift impulse using a capacitor and switch. It is important to carefully follow instructions and safety precautions when generating a short parabolic impulse.

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