Thursday, September 23, 2010

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Sweep Analysis in Multisim CD

Sweep Analysis in Multisim CD is used to calculate the bias point of a circuit over a range of values. That is, Multisim circuit simulation repeatedly sweeping CD values \u200b\u200bwithin a predetermined range.

To find out more detail Sweep Analysis in Multisim CD will use it as a tool to chart the behavior of a Zener diode:

multisim
The above circuit is a simple Zener regulator diode which maintains a constant output although the current through the switch. In this case, the 1N4462 diode has a Zener voltage (Vz) of 7.5V and a tolerance of 5%. The input values \u200b\u200bminimum and maximum voltage that can be regulated by this diode is 7.41 V and 26.41 V, respectively.

above check using the Sweep Analysis in Multisim CD in a range from 0 V to 40 V.

In Multisim we select Simulate >> An Alisis >> Sweep CD ... and configuring the test parameters as follows:

multisim

This indicates that we are going to vary V1 (independent source) from 0 V to 40 V in increments of 1 V. button Filter Change can deploy advanced variables (ie nodes within a BJT model). There is also the option of adding a second independent source, it is useful to perform a nested sweep.

Now go to the tab output and add V (2) , the voltage at node 2 as the selected variable Analysis:

multisim

We button Simulate for analysis:

multisim

From the above figure we can see that the output is stable around 7.5 V, which is the nominal Zener voltage of the 1N4462. We can also see that the range of work is consistent with Zener diode as provided herein.

In the next post will use again Sweep Analysis in Multisim CD to trace the characteristic curves of a MOSFET.

Greetings!

Fernando

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