Sweep uniformity analysis

It is important to note that the resistor part used is Rspcnt and not R5gauss. The model Rspcnt has a 5% uniform distribution. We would like to find the gain of this circuit, so we must set up an AC Sweep. Select PSpke and then New Simulation Profile from the Capture menus, enter a name for the profile, and then click the Create button. Select theAC Sweep/Nolse Analysis type. Fill in the parameters as shown ... 

An analysis of sweep uniformity on the performance of hollow fibre gas dehydration modules is presented. The analysis is based on the governing conservation of mass and momentum equations and appropriate expressions for the overall mass transfer coefficient. 

For the investigation of charge tranfer processes, one has the whole arsenal of techniques commonly used at one s disposal. As long as transport limitations do not play a role, cyclic voltammetry or potentiodynamic sweeps can be used. Otherwise, impedance techniques or pulse measurements can be employed. For a mass transport limitation of the reacting species from the electrolyte, the diffusion is usually not uniform and does not follow the common assumptions made in the analysis of current or potential transients. Experimental results referring to charge distribution and charge transfer reactions at the electrode-electrolyte interface will be discussed later. 

In amplifier design it is important to know how your bias will change with device tolerances. In this section we will find the minimum and maximum collector current of a BJT when we include variations in the transistor current gain, 0F, and resistor tolerances. The circuit above was previously simulated in the Transient Analysis and AC Sweep parts. We will use the same resistor values as before, but we will change the resistor models to include tolerance. The BJT is also changed to the model QBf. This model allows 0F to have a uniform distribution between 50 and 350. 

All distributions are uniform. We will run an AC Sweep in conjunction with the Monte Carlo analysis. Fill in the AC Sweep and Monte Carlo dialog boxes as shown below ... 

We believe the analysis presented here will be useful in evaluating alternative methods for introducing sweep in membrane modules for both gas and liquid separations. Although uniform sweep distribution appears not to be critical for air dehydration, other applications may be more sensitive. 

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