Is there any circuit for generating Gaussian Noise with

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SUMMARY

This discussion focuses on generating Gaussian noise with adjustable mean and variance using specific electronic components. A low leakage vacuum photodiode, particularly with anode and cathode positioned at opposite ends of the glass envelope, is recommended for achieving this. The dark current of 1 femptoamp produces a Poisson distribution, which can be manipulated to create Gaussian distributions by increasing the current. Additionally, solid-state PIN diodes are identified as effective sources of shot noise for this application.

PREREQUISITES
  • Understanding of vacuum photodiodes and their configurations
  • Knowledge of dark current and its implications in noise generation
  • Familiarity with Poisson and Gaussian distributions in electronics
  • Experience with solid-state PIN diodes and shot noise characteristics
NEXT STEPS
  • Research the design and operation of low leakage vacuum photodiodes
  • Explore methods for controlling dark current in photodiodes
  • Study the relationship between current levels and noise distribution types
  • Investigate the use of neutral density filters in light sources for noise generation
USEFUL FOR

Electronics engineers, researchers in noise analysis, and anyone involved in designing circuits for noise generation will benefit from this discussion.

paawansharmas
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Is there any circuit for generating Gaussian Noise with a mean and variance.
we should have control to change mean as well as variance accordingly.

thanks.
 
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One method is to use a very low leakage vacuum photodiode (with anode and cathode on opposite ends of the glass envelope) in a completely dark enclosure, and look at the dark current. If you have a 1 femptoamp dark current, that is equivalent to 6250 electrons per second. If you look at the number of electrons per millisecond, it should be a Poisson distribution with an average of 6.2 electrons. Increasing the current will produce Gaussian distributions. Using a light source and neutral density filters, you can get any number of electrons you want. Shot noise in solid state PIN diodes also are good sources.
 

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