calculate the symmetrical components of voltage and current

Similar Questions

• How to display the voltage and current of synchronously

  Recently, doing a project on the acquizeing voltage and current synchronouly, then display. the design is welding a resistor(1%) 0.5 ohm in NI 6251 entered analog of her HAVE differential, then acquired the differential voltage at the input to convert current. At the same time, I hope to recover the path of analog input voltage. My problem is that the current profile data. Please help me .the program screenshot is show below. ---1. Perhaps you ask why not use no. - a way to get voltage at all port of AI, then in the use of the software less to get a voltage inputs HAVE. in this way, my problem is solved. I try, but the current accuracy is failure. because my current range expect is 1uA ~ 100mA. precision current samll won't be promised if you use simple ways for granted NOR 6251 voltage. NEITHER 6251 device spec (HAVE an absolute precision) (v) nominal range sensitivity absolute Accuracy (uV) 10 1920 112 5 1010 56 2 410 22.8 74 0.2 6.4 0.1 52 6.0 (I want to use this range to measure current samll) - cordially Shawnh.Chen

  shawn1 wrote:
  1. how show the waveform by accumulating 1 d data table, rather than showing all 100 acquisition

  Use a waveform graph.  Graphics keep history, you do not have to accumulate the data.  He does it for you on the screen.

  shawn1 wrote:
  2. What is the minimum unit of identification of the TSC103IPT amplifier? I doubt that the 0.5uA can be identified? (0.5uV = 0.5 ohm * 1uA) Because I can't find anything on the auccary in TSC101IPT datasheet.

  The amplifier is analog.  Thus, he can win anything.  But you should really think about a higher resistance if you really want to measure this small of a current.

• Chroma DC power supply RS232 communication (read problem of over-voltage and current)

  Dear all.

  I chroma programmable DC power. Based on the programming of the Instrument manual I develop using RS232 communication. Based on the program I can set the voltage, current, over-current protection, protection against overvoltages and make IT / OFF out put supply perfectly.

  But I have to read the measured values of the output power as current and voltage. Measured applications are the voltage and current of the output of the power supply. My problem is two of them read at the same time. Currently, the reading is only voaltge or current (if the first request is v? it is voltage read out but no reading for the current) and if the first request is CURR? the reading for the current, but not for VOLT? The status message is OK, even if it is to read values.

  Thanks in advance

  What I see in your program, it's that you do not use the stop for reading character. For your writing, you do the hard with all these concantanate string functions. You can set the stop character for all entries with a node unique propert - "ASRL end Out.

• Variables for voltage and current on each component (for use in graphically the diagram)

  Hello

  I have a very simple circuit containing only a source of AC voltage and resistance of two series.

  I want to draw the voltage of the source and each resistance. I can't find any variable involves pre right now, I know I und came to the value of the resistance.

  for example

  UR1 = I * r1

  USource = I *(r1+r2)

  It's pretty boring... especially because that put in square brackets does not work.

  probably the cause variables containing itselfes media.

  hope you have an idea

  THX

  Hello

  The way that you have set in place now of things is correct. Multisim, as well as most of other circuit simulators, monitors the node voltages, no voltage drops. When you draw your diagram, Multisim assigns numeric node names to each node. That's why you see v(1) and v(2) and not something like V (R2). To find the voltage drop in R2, you will need to calculate V (2) v (1). To know the name of each of your nodes (also called threads), simply do the following:

  1. Click Options > properties sheet
  2. For option Net names, select Show all
  3. Click OK

  To make it easier for you, you can name a few nets to something that is easier to read. You can do this:

  1. Double-click on the net you want to rename (the net is the wire you drew connecting elements)
  2. Enter your name, preferred net in the space provided
  3. Click OK

  Hope that answered some of your questions.

• scanning voltage and current measurement for Keithley 2400

  Dear all

  Hello

  can someone help me?

  Despite days nearlly10 I am option to find any program LabVIEW 2010 for sweeping the voltage and measure current who works with RS-232, I have a end not have nothing exept examples read single and multiple data. I tried to SmartData labview and changed a few prorgram gpib to RS - 232, but I couldn't.

  In another attempt to find a good VI "votltage scanning and current measurement" that work with RS-232 in labview 5.1.1. I have converted in 2008, but it takes old driver (ke24xx.dll) and do not work in my labview 2010 and I could ' t find older driver.

  My thesis project was halted in those 10 days, and I couldn't do anything for our keithley.

  Please helpe...

  in the following, I have attached these files:

  1.-first, what voltage scan that works with GPIB

  2 - Vi that I change the gpib for visa (rs232) port that I don't know why it doesn't work.

  3. it is Vi related to the "sweeping and current measurement votltage" that works with the RS-232, but it takes old dirver so I can't use it.

  4-slot-VI necessary for the implementation of program 3 (but there is no driver for these subVIs) was attached to the reply message of this post

  If any body has this program ("scan votltage and current measurement" running rs - 232) please send to me

  Thanks in advance.

  None of you attached the screws are the driver OR you spoke. There is no conversion required for this driver.

• script to calculate the hypotenuse of a page and place an image block

  Hello

  I wonder if anyone can help me with a script.

  We need to get the size of an open document, calculate the hypotenuse (visible diagonal), it divides by 10 and place a picture box square on the page to this size in the upper left corner.

  I found this javascript to calculate the hypotenuse but don't know how to use it or integrate it.

  function hypotenuse (a, b) {}

  function square (x) {return x * x ;}

  Return Math.sqrt ((a) square + square (b));

  }

  function secondFunction() {}

  var result;

  result = hypotenuse (1,2);

  alert (result);

  }

  Yes, I am a total newbie and would appreciate anyones help.

  Thank you

  maxrus2012

  Hi maxrus,

  It seems so simple that anyone was necessary to answer you! Indeed, we can easily retrieve the height and width of a page, then calculate the diagonal, then create a square based on this length.

  In any case, let's try to do this routine work in any context, supporting all units of measure custom, parameters of leaders, spreads rotated and/or same scaling / biased pages! To do this, avoid common methods from "geometric limits." Interesting challenge!

  Here is my attempt:

  // Create a square based on the active page's diagonal length (10%)
  // ===========================
  
  function measureDiagonal(/*Page*/page)
  // -------------------------------------
  // Ret. the page's diagonal in pts (relative to the page CS)
  {
      var CS_INNER = CoordinateSpaces.innerCoordinates;
  
      var wh = page.resolve(AnchorPoint.bottomRightAnchor, CS_INNER)[0],
          w = wh[0],
          h = wh[1];
  
      return Math.sqrt(w*w + h*h); // Pythagorean theorem
  }
  
  function createTopLeftCornerRectangle(/*Page*/page, /*num[2]*/wh)
  // -------------------------------------
  // wh: width and height of the rectangle in pts (relative to the page CS)
  {
      // Some const shortcuts
      // ---
      var    CS_SPREAD = CoordinateSpaces.spreadCoordinates,
          CS_INNER = CoordinateSpaces.innerCoordinates,
          RM_REPLACE = ResizeMethods.replacingCurrentDimensionsWith,
          AP_TOP_LEFT = AnchorPoint.topLeftAnchor;
  
      var spread = page.parent,
          // Create a rectangle (in the spread CS--the page CS is not relevant yet)
          // ---
          rec = spread.rectangles.add({fillColor:'Black'}),
          // Page transformation values (relative to the spread)
          // ---
          pageMxValues = page.transformValuesOf(CS_SPREAD)[0].matrixValues;
  
      // Normalize the rectangle in the spread
      // (the size does not matter here)
      // ---
      rec.reframe(CS_SPREAD, [[0,0],[10,10]]);
  
      // Apply the page transfo to the rectangle
      // so that its inner space fits the page space
      // ---
      rec.transform(CS_SPREAD, [[0,0], CS_SPREAD], pageMxValues);
  
      // Finally, resize the rec
      // ---
      rec.resize(CS_INNER, AP_TOP_LEFT, RM_REPLACE, wh.concat(CS_INNER));
  
      return rec;
  }
  
  var    FACTOR = .1, // 10%
      win = app.layoutWindows.length && app.activeWindow,
      page = win && (win instanceof LayoutWindow) && win.activePage,
      size = page && page.isValid && FACTOR*measureDiagonal(page);
  
  size && createTopLeftCornerRectangle(page, [size,size]);
  

  Not sure that's exactly what you're looking for.

  In any case...

  @+

  Marc

• my project is to measure the voltage and current by using the view of laboratory.

  Dear Sirs,

  I have a project to measure parameters electric ac current, voltage, power factor etc through aquisitioin of data with labview. Can I do this? If yes then kindly help me with some opinions and ideas. I'll be very grateful to you.

  Muhammad Azam Hanan.

  Student of the University of engineering and Technolgy, Lahore, Pakistan.

  
  

• Venue Pro 8: use the charger with a little more voltage and current?

  I just bought a Dell came Pro 8 tablet used running Windows 8.1. The seller didn't have the original charger, so he gave me a 12W of Apple loader that had taken out nominal 5.2V and 2. 4A

  Is it okay to use this charger for my Tablet? Any potential problems in the long term?

  Thank you!

  I'm sure that the voltage is OK to 99.9%.  The extent of the current note goes, which is often misunderstood.  The rated current for a charger power or power is the maximum that the charger/power is able to provide. It could be evaluated to a zillion amps, but the equipment to which it will draw only what it requires.

• 6009OEM output voltage and current

  Hi all

  Just try to make sense:

  http://www.NI.com/PDF/products/us/20043762301101dlr.PDF

  Page 3 says: high output voltage (push - pull, I = - 8.5 my) = minimum voltage 2.0 v maximum voltage = 3.5V but where can I find out what current can it provide and continue to produce an output voltage more than 4.2V?  (4, 2V is the worst case for the high threshold of logic of a chip, I want to control).

  Thank you!

  J

  Hello J,

  As you mentioned is the maximum voltage of 3.5V when you have a high output voltage (push - pull, I = - 8.5 my). If you need more than 3.5V then you might need to change to an open-drain output. As you can see from the link you provided that you would receive a maximum voltage of 5V.

  If you do not use an open-drain output you have to combine with a pull up resistor.

  I hope this helps.

• data acquisition in line voltage and current signals

  What is the name and model of the instrument OR measure the 220V 3-phase, 5 signals? Also, what will be the approximate cost of this equipment (s)?

  Hello Yasink,

  Looks like you could do reference the entry Module current 5A with insulation of 250Vrms, NI 9227.

  Can you provide more information on the app you want? From there I was able to provide a better recommendation.

• Will be an iPhone 6, purchased in the United States, take over USB plug in the Rep of Ireland? (is the iPhone 6 dual voltage and frequency)? Thanks in advance!

  Unfortunately, I do not have the apple iPhone specifications 6 as friends of the United States came to visit in Ireland. However, I wanted to confirm that an iPhone 6 purchased in the United States can be recharged on feeding electric 230V and 50 Hz in Ireland via a USB cable?

  Thanks in advance!

  Yes, it can.

• Phaser in LabVIEW for voltage and current indicator

  When I read a research paper on the power system, I've seen has a reasearcher program LabVIEW (its block diagram is not shared just GUI). My question is: is-LabVIEW has a built-in function that allows to display the amount of complex in | Mag |

  

  Greetings muahang1234

  There is a suite for LabVIEW called Suite of electrical power OR LabVIEW that might interest you. Visit ni.com and evaluate the software, it may be the tool you're looking for!

  Let us know how it goes. Nice day.

• Connection of the PXI-4071 - can sound and LOs remain interconnected for the impedance of the cable 2, voltage DC/AC, frequency and waveform acquisition?

  Hello

  We use the DMM and SMU-6363 map to test a hardware device.  We will also use a PXI-2530 b switching matrix.  We will use the digital multimeter to perform the measurements of voltage, DC and AC, measurements of impedance (2-wire and 4-wire), frequency and waveform acquisition.  Can the PXI-4071 left be 4 wire connected (black jacks taken connected and red connected) mode and still be used to perform all other measures (including 2 impedance of the cable).  This would simplify the switch connections.

  Current measures use the son + and LO, but the HI and S-can remain connected.  The problem you are having is if you have an active device the digital multimeter and take you a 4-wire resistance and the measurement of voltage with all 4 wires connected and then change to a current... When you do this, short-circuit you the terminals of the DUT, on that you just take the measurement of the resistance.  If the terminal HAD, say, a power supply 10V, then you have just shorted out.  Of course, this isn't a problem if your Instrument is a passive device, or if you change just the unused two lead whenever there is an active device of low impedance.

  If you want to make voltage, current and 4-wire resistance, you need all 4 wires.  If you want to do the voltage and current, you will need 3 wires, but you could connect the s + Hi and then just do the two wires.  I vote running every 4 son to your DUT for maximum flexibility.

  2-wire resistance is a must if you are measuring resistance above 10 MOhm.  Alternatively, you can use 4-wire for all measures.

• How to measure high voltage (60-70 v) and current (75-80 a) using a DAQ PCI or USB DAQ

  Hello

  I work with a system that works on about 5kW. The output of the system voltage can go maximum up to 60-70 v and thus the corresponding current around 75-80 a. I have 10 these systems that I want to read one by one continuously for long periods.

  I am designing the automated system best suited for this and looking for the best material that would be appropriate for this purpose. Looking for options, I found that an SCC - A10 attenuator may be used to get the tension down by a factor of 10. But I'm confused, if the high current will pose a problem and also how to measure this high current.

  I need to measure the voltage and current at the same time. Please suggest what would be the most appropriate fitting for the same (preferably PCI or USB)

  The hope of a quick response. Thanks and greetings

  Reena Sharma

  Facilitated learning

  Reena says:

  Hi all

  There is good news that the idea of using a compact data acquisition has been accepted by the authorities of the society. I'll be very grateful, if you could suggest me with some hardware modules suitable for my application and how I can use them best.

  Thank you very much

  Reena

  I was able to make a few suggestions, but do not have the time to understand your needs and the forums are not the best solution.

  Your Local OR representitive actully gets paid to do this kind of thing.  a google search suggests THAT LME is in Pasadena. Zack Collins would be the contact rep

• How to calculate the IOPS datastore / s and latency via Powercli?

  Hi all!

  I want to calculate the IOPS / s (RO/RW) and the latency of the data via Powercli store, but I cant' find this metric in Vcenter (in the data store tab) and see no metric for data via the cmdlet Get-Stat store.

  How can we measure IOPS / s and latency of data store?  For example I know veeam monitor this information - http://cdn.swcdn.net/creative/v16.8/images/screenshots/products/VM/Lg/EN/VMan60-Orion-Datastore-Top_Lg_960x540.jpg

  I know, I can get this VM or vmhost metric, but I need information on the data store.

  How to measure for IOPS / s and latency of data properly store?

  Thanks in advance!

  These measures are collected on ESXi nodes, entity would need to have the ESXi nodes where these data warehouses are connected.

  You can use the Instance property to filter.

  Under the PerformanceManager , you see all the measures for each indicator it indicates under which entity this metric is collected.

  

  And Yes, the cmdlet Get-inventory returns no data warehouses.

  There is a little, aggregated metric for data warehouses, I'll have to find an alternative for those.

  Nice catch!