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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:

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:

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:

We button Simulate for analysis:

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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Capacitance and Inductance Measurements in Multisim

I began to organize some files on my PC and I found two circuits in Multisim that a while ago a colleague shared with me. Circuits is to measure the capacitance and inductance of components.

In Multisim not have a meter to measure L and C, but there are some techniques you can use to achieve that goal. I will not give specific details of the techniques used in these circuits, but rather I will focus on how to use them in Multisim. To download these circuits gives click here.

Inductance Meter

inducers to measure the circuit figure above is sufficient to connect to the terminals 1 and 2 of the AC power source. As shown in the figure, we have a 1 mH inductor, then run the simulation in Multisim will see displayed the result (in Henries) on the voltmeter.

can also make combinations of inductors, for example, if we have the following inductors in parallel: L1 = 1 mH, L2 = 5.5 mH, L3 = 615 uH. The result would be:

such 0,356 mH as indicated by the simulation result.

Capacitance Meter

In this case the capacitance meter circuit is more complex (even used a subcircuit). This circuit works best for capacitances of the order of micro farads. Basically connect the capacitor or capacitors according to the terminals C _P and C_N respectively. The result is displayed on the voltmeter but in terms of farads.

Here t see another example in Multisim:

There are different techniques to make such measurements, but what is important to remember is

we simulated, so the results are approximate.

Greetings,

Fernando

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MEDOC MARATHON: NOT EVERYONE IS GOING TO BE SUFFERING. While the boys suffered by the Alps, so did Sergio Espinosa his for France last weekend, but in this case in order to finish the Medoc Marathon (September 12) without getting behind the brooms of the organization, and that is when it claims to be the world's longest marathon, not for the distance (which is always the same) but because almost none of the over 7000 participants in a hurry to come ... and no wonder, the condition is going in disguise (each year there is an issue, although you can go to whatever you like), some take it so seriously that lead up to coach (and push the 42 kilometers), and scroll through the 20 aid stations where, in addition to live music, you can try, as well than usual (water, fruit wine ,...), the area (almost all points of supplies are located next to the warehouses through which passes the path), cheese, sausages, meat, oysters, ice cream. .. to hurry to arrive. Despite being the only member of Arista in participating in this carnival ride, and I mean, the company was better, since Sergio went over to Maru and Eli Espinosa, for those who would be his first marathon and Natalia Gonzalez (and tanned in the distance .) A marathon recommended, especially for those / as they want it without strain or release in the distance.

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Using the Microphone and Speaker in

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Multisim Instruments LabVIEW Multisim - Extending Capabilities Simulation and Analysis

The following is an article on a topic of Multisim I really like the integration with other software packages and the fact of how we can extend simulation and analysis capabilities.

addition to the typical virtual instruments (oscilloscope, multimeter, etc.) for the simulation of circuits in Multisim have a special set of instruments known as Instruments LabVIEW.

First of all define what is LabVIEW. LabVIEW is a graphical programming language used in measurement applications, automation, control, design, research, etc. Like any other programming language allows us to create our own programs, but the big difference is that instead of having to use text to programming, we do it through blocks that are interconnected.

addition to ease of programming, LabVIEW has many libraries for signal analysis, mathematics, instrument control, data acquisition, etc. To learn more about LabVIEW one click here.

Now imagine the following scenario, we have a circuit and we need to get your answer in time, power spectrum, averaging the output signal, etc. O also require using a custom signal to the input of the circuit. What to do in such cases? We can certainly use some of the virtual instruments or advanced analysis of SPICE for certain calculations, but if you need more advanced or we can use a custom LabVIEW Instrument Multisim. Put another way, we can create a program in LabVIEW and Multisim for use within a specific task.

In the bar we can find instruments Multisim Instruments LabVIEW some were created for certain applications:

From the above figure we can see we BJTs analyzer, microphone, speaker, an analyzer and signal generator, etc.. To explore these instruments only place them in the Multisim workspace and double click on them to open the front panel. For example, in the following figures we see the block Signal Analyzer and the corresponding front panel

To see in action this instrument we will open one of the examples of Multisim. To do this we select File >> Open Examples ... We'll sail to the next folder Instruments LabVIEW >> Signal Analyzer and open the file GilbertCellMixer . This circuit uses the analyzer is Nal to see results of the Gilbert cell mixer. Execute the simulation and see the front of the analyzer Signal:

By clicking on the Analysis Type field can see different results from analysis. The interesting thing is that the front panel was created and customized in LabVIEW, so that we can create our own tools to perform a specific function. Sure, it requires knowledge of LabVIEW to make the necessary programming.

In the next blog entry will use the microphone and speaker included in Multisim and LabVIEW Instrument.

meantime if there are questions on this issue do not hesitate to tell me.

Until next time. Fernando

Saiontz Kirk And Miles

ENDED THE TRANS RUN 2010 PHOTOS OF THESE DAYS

Gore finished Tex Transalpine Run 2010.

Miguel and Pedro have finished the test with a total time of 41:14.39,2, after holding an amazing regularity during the eight days of racing. In this time trial finishers our partner is placed in the position 13 of the Master class and 55 overall. Congratulations Titans!

As for the other half of Arista Scania - New Holland, have come together on the stage today and have suffered immeasurably to arrive. A Tito problems must be added the unfortunate Fernando visit he received from the injury that made him leave UTMB in 2008. With that Tito has been to only one stage completing the circuit and recognize him as finisher Fer test upon completion of 8 courses, but will not enter as a team classification. Enhorabena for you too! We know it's been a great effort.

But do not think this is so, still not over it. Tonight is the final race party and our friends are looking for complicity with other English teams to "assemble" and is due Sexten .... Fer Tonight Tito and dance with the leg on his shoulder ... ha, ha, ha ...

The 4 players in the stories of the last 8 days.

Yes sir! Worked and deserved this shot.
Congratulations guys!

here with the "solo finisher." Congratulations to you too brother!

is the end of 8 days of excitement and adventure, Michael, Peter, and Fernando Tito lived with intensity and that we, here, we have been able to share (a Sometimes it seemed we ran with them.)

When the test is passed the custom we thank the people and institutions that have facilitated in some ways this experience.

On the side of the institutions:

Thanks to ICASA (Scania and New Holland) and by the Deputy Ministry of Sports of the Canary Islands. Without their support it would have been far more complicated .... or would not have been.

And on the side of people:

Thanks to all who have supported this team period. Each of the messages of encouragement that have been written on the blog during these days has been received as a gift in the race and has been strong when needed. Many thanks to Adu, Silvia, Chencho, Ferko, Michael, Toni, Laura, Jerome, Moses, Jonathan, Guardaya, Fatima, Aaron, Sergio, Emilio, Goyo, Santa, Norbert, Cristina, Ezekiel, Star, Jeanette, Pepe and "anonymous." Thanks also to those who did not get to decide to write, but also pushed the team to monitor developments.

Thanks to the families of each of the four.

Until next time!

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To make the wait more enjoyable and as we write today will be delayed more than tell you something normal arrival, here are a pictures of the boys during the stages of those days. Enjoy them and into the evening.

PD: In the Canarias7 today published a story about the boys.

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eighth and final stage

Tonight we came the news that Fernando was kept in qualifying, which can still be finisher (if it ends tomorrow).

Here is information on the stage:

Stage 8: im Niederdorf Pustertal / I - Sixth / I
Home: 8:00 am
vertical distance: 1269 meters	ascending, descending 1123 meters
horizontal distance: 33.40	Kilometer.
Ø Estimated time:	approx. 4.5 hours

Click to enlarge

Christmas Lights Decorating Contest

No time to lose in this race. The routines are very sharp and the body also supports many improvisations.

Upon entry into goal, every village that has placed a carp comes with food in addition to those that find some of the sponsors. Pretzels and jelly beans in the tent, Gore-Tex, juices and smoothies in the Buff, hammocks to rest in one of them .... In this short time

eat something, is used to put the legs on the power of the people (and shout how cold the water is), talking with other brokers ... until we move the camp, a facility that is provided in each population to provide accommodation for riders who want it. The site comes first and maybe pick up mattress, no, you will have to make do to find a hole and put your mat. This space is where one takes a shower, stretch, there is a session of Compex, hydrates and conditions, at about 17.30 or 18 touches the pasta dinner, a good meal to end the day.

But we have not yet finished. At 19 touches the briefing. Honors clsificados the first three in each category, the imposition of the team jersey leader and director of career talk in German, with subsequent translation the English version short and free "in English by Carlos, a collaborator of the race today saw his pole finisher of the qe Transgrancanaria participated.

Now we can go to sleep ..... For a short time. At 5.30 the bags must be prepared for transport. Then breakfast, time for a break, preparing useful career, fill the pot and run again.

Finally, a non-stop. As a camp, but "big kids".

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ANY DAY FINAL STAGE SEVEN OUT OF SEVEN

    Another piece of race to Peter and Michael, who entered today in goal in 6:08:18 in 19th place in its category. And accuse quite noticeable fatigue and pain everywhere, but in return they know that only subtracts the stage tomorrow. They are in the position 60 of the general.  

  by Titus today and could not be. Although this morning we "cheated" with the photo output, decided to stay and Fer ran alone. No need to risk aggravating the injury and it prudent not to leave, with the hardness of this phase. Still value the ability to run tomorrow to make the final.  

Retrieving

Finally! Miguel and Pedro in the race.

  Then the video of the sixth stage, confirming what the guys told us about it and the previous one in terms of the technical nature of some areas and adverse weather conditions.  

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; Image just an hour ago, at the start of the seventh stage:

....¡ And

this are seven!