Power amplifier

Similar Questions

• Recommend me an amplifier?

  I searched the catalogues OR for some power amplifiers, but either they do not offer, either I couldn't simply cannot find them.
  I need to measure voltages of small (less than 1 mV).
  I intend to use the amplifier to increase the tension, so I can measure with Renault ±10V varies.
  A gain of 500 or 1000 will be probably OK.
  Could someone recommend me something?

  Thanks to you all! Now, when I know that nor makes no such amplifiers I found another company to make me one.

• Amplifier to Clip +.

  I'm running into a problem when you use the Cilp + in my taking of vehicles and when connecting to my headphone hearing protection for my shop.  I have to turn the volume on the Clip + almost all the way (I have the volume set) just to hear the music (I'm not making my ears bleed).

  Read the various messages, it seems that I need an amplilfier any to go between the Clip + and the vehicle/helmet.

  Is this a correct understanding, if so, is there such a thing on ther and if so, are their suggestions as to brand, brand, model, etc. ?

  Thank you

  EricBr

  You can try the Fiio E5, I use with my Clip + and my Koss PortaPro headphones.  It works very well and is pretty cheap.

  FiiO E5 3.5 mm earphone Volume Booster power amplifier (black)

  Hope that helps you some.

• Large signal output capacitance measurements

  Hi all

  I'm working on a power amplifier and I want to measure the ability to output under large signal condition. I use a non-linear model of the GaN power transistor.

  Power output is about 36 dBm, f = 8.2 GHz

  I tried both methods:

  (1) I have spent under bias Vgs - 6V to 1V, Vds = 28V. I use solver C_PRC linear tab to find the parallel to the output capacity. I got a chart that changes from 0.3pF to 0.5pF. In this simulation I don't use tuner to impedance, just ports (50 ohm) and sources of bias.
  (2) amplifier is biased to 28V and 125mA. Then, I drive amplifier with of 20dBm to 30dBm input power. In this simulation, I used HBTUNERs to maximum power output (power input 25dBm at the entrance) and the output. I can see there is a change in capacity at the entrance vs input power change. However, in the output, production capacity is constant and 0.52pF. I am able the ability of the drain of transistors, tuner. I use great Solver for the parameter measuring signal Y and calculate the capacity.

  The interesting thing, I can meause entry changes easly to large signal capacity, but output capacity is constant!
  I have two questions:

  (1) why the three measures are different?

  (2) for large signal measurements, for example; 30dBm output, 30 v peak-to-peak output average 40dBm 50 v peak-to-peak. So, there is a change in capacity over a period of time. When I measure the Solver big signal, Solver uses the high peak values? If so, can I change low peak value?

  (3) can be used for important signals gamma probes?

  Thank you

  
  

• Load pull to the output corresponding to network design

  Hello

  I tried to design the entrance and exit of the matching networks for a power amplifier using the traction load script and the elements of HBTUNER2. According to the contours of traction load, the optimal point impedance is 15.37 - j21.99 (I chose a compromise between EAP, DCRF and PGain). Now my question is when I use the wizard iMatch to convert this to a 50 ohm termination impedance, use 15.37 - j21.99 or the conjugate 15.37 + j21.99? Otherwise, what is the reason? I always thought that load a script pull gave the impedance looking into the port of the active peripheral side. How did the point impedance suggested by loading a script pull to interpret?

  Thank you much in advance.

  
  

• Creation of double page layout for use in schema

  Hello

  Could someone briefly get thorugh the steps to create a double page layout after EM simulation for use in a scheme to fill the localized elements and active device for a simulation of power amplifier in terms of layout? (I know it's possible in an another, popular EDA tool where the look of the layout as will have ports to the places where the discrete elements are to be connected)

  Thank you much in advance.

  Hey Jake,

  Use the wizard symbol generator: in the project tree, open the node of assistants and double click on symbol generator.  You can find information about how to use the wizard for help (search for "symbol generator" without the quotes in the index), or online at https://awrcorp.com/download/faq/english/docs/Users_Guide/i488885.html#symbol_generator.

• Control and Simulation in a loop / while loop with TCP/IP reading / writing of synchronization

  Hello, I have a problem with reading TCP/IP and written in two loops. The problem is NOT to get the two loops to read and write to and from the other. This has been accomplished. My problem is when I run control and the loop simulation on my laptop and the while on a RTOS remote on the controller on-Board of LabVIEW in a remote PXI chassis, the while loop the remote system running on four 4 times faster than the loop control and simulation on my laptop. In other words, for each iteration of the loop control and simulation on my laptop, there are 4 four iterations of the while loop on the remote system. I need to know how to get a degree of kinship (1:1) with these iterations of the loop. When I run a longer simulation in real time, say 10 seconds, the control and Simulation loop begins to slow, i.e. the simulation time slows down until it is no longer in real time and the "Late Finish"? Parameter is set to true and the LED lights and continues to stay lit. At this point, the system destabilizes due to what I believe is being well sampling rate too discreet and I have to end the simulation. How can I get a ratio of one to one between the loops and also to avoid slowing the loops causing destabilization?

  To give an overview of my application, I implement a control system in a network, seen in "image2.png". This is achieved using my laptop as a subsystem 1. Reference signals are generated from the laptop and the error signal is produced. Control measures taken and the control signals are sent via TCP/IP to the remote system. Position feedback is returned, and the process repeats. My system has Core I7 Procs w / 3 GB of RAM, up to 1 GB/s speed via ethernet and LabVIEW 2011 installed with all necessary modules and networking tools. The attached VI Custom_Wireless_Controller works on my laptop. The remote system I'm working on that has the 7830 NI R Series with FPGA card. OTN runs on the PXI chassis with an enbedded controller that has networking capabilities of up to 100 MB/s via ethernet. I use the FPGA for the acquisition of data and apply control signals to my plant. The plant is the PCE twist connected to the FPGA through the cable of the ECP - RIO of NOR. Subsystem 2 is this side of the CNE. The FPGA collects position, he sends to the controller via the network, receives signals from the network drive and writes signals to the plant power amplifier that operates the plant. This process is repeated and the VI and is titled Custom_Wireless_Plant.

  I appreciate the help really and look forward for her and for any question!

  Well, the first step is to understand what you have set up right now. Your control and Simulation loop on the side of the controller is configured as 'Runga Kutta 4' and you have a loop timed on the other side. In addition, you have the primitives of TCP/IP on the control and the Simulation diagram and means he will perform (a message) on the size of each minor step, which in your case is 4.

  So, you have two options:

  1. replace the Solver side controller Runga Kutta 1 (this must synchronize loops)

  2. hold RK 4, but create a Subvi around two primitives of TCP/IP and configure from the VI to run than the major (continuous) step-size. If you do it right, you should see a 'C' on the upper right part of the VI you have created.

  Please let me know if what I said is not clear...

• PCI-6723 DAC

  Hello

  PCI-6723 DAC has a limit of output current of 5mA/channel. Kindly tell me if the circuit (power amplifier, for example) connected with output channel DAC attracts more than 5mA current what will happen? It will damage the card or there is an internal protection provided in this map?

  Thank you

  Hey Asim,

  The railway must output current to ~ 5 my per channel and the tension will decrease accordingly.  The protection on the 6723 is noted in the record as "short to ground", which indicates that even if you short-circuit the outputs it should not damage the card.

  Best regards

• Communication series with Miteq switching system

  Hello

  I am trying to contact a Miteq redundant switching system 1:8 for high power amplifier.

  My VI gives me an error of framing. I have already read the thread on the mistake of framing posted here and made sure my port is configured to match the settings of the device.

  (Data bits - 7; Parity - same, baud rate (9600) equipment is silent about data flow and the stop bits, (I guess NONE and 1.0 respectively)

  I use a laptop with a USB port. I have a USB-serial cable of NOR. I use an IC -? 855 RS232-RS485 converter because the system is RS485. I already checked the pinout for the port that I use a fact a connector corresponding Tx + in the converter with Rx +; TX - Rx-; and the other two wires are connected as well.

  I opened MAX and tried to write directly to the VISA driver, but I get an error as well.

  I do not know if the manual is just, he is a former switch and someone could have changed the port connections.

  Y at - it a trick to know what is the link?

  I'd appreciate any thoughts here

  Thank you very much

  Hi Jeff,

  I can't open the link you sent, but we finally thought that the problem is the connection of broaching. Me not according to the manual or any document we have.

  Sorry I did not before.

  Thank you very much for answering!

• Phone music player causing restart

  I had my Atrix for about a month. The phone is fast and responsive which is really very good after having a dog slow phone before this one. But I have a love/hate to date relationship. A big problem is that my music player will not continue to play, it will stop to random play and I half to restart. Also sometimes the music player will cause the phone restart. This problom used to be really bad, but I found a bug causing some problems. Here's what I've tried so far.

  1 removed the battery and wait a few minutes to replace the battery. No change always reboots after a few minutes of using the music player

  2 tried to download another player of music PlayerPro to use instead of the default one. No change always restarts

  3. then I tried to do a reset of the data. Now the reader by default music played for about an hour for the first time.

  4 redownloaded the most applications, I had (at least those I could remember). Music player continues to play.

  5. start modifing a couple of the OS Settings > etc... Player is still playing

  6. until I got to the configuration of settings > Applications > development > check stay awake while load. Now the phone restarted two times 15 minutes while playing music. Went back and unchecked plays once again stay awake setting and the music player.

  If this bug with it staying awake while the load option please attaches. I hate the screen cut off while I read a book. I can plug in and let the screen as long as I want.

  7. now the music player is played, but always after 1 + hours of game time to chance the music player is shut down or restart the phone.

  So it's much better than before but not completely fixed is there anyone with an idea?

  With regard to the Task Manager. I did a bunch of research on the issue of what apps leads players of music stop. I found 3 that will do that. Gallery, music and the media bought and of course any other music app, you are going to use.

  The Task Manager is best used to all the apps that you have added to the phone only because as you can see some of the pre-installed applications will have a problem if stopped.

  In regards to a widget for the lock screen, I use an app called Widget Locker of the market which is great on the Atrix and now even supported as well the finger swipe. With this application, you can place widgets on the lock screen and control your phone without having to unlock it.

  I also recommend the application called power amplifier to a music player, the player is just a great player and works very well with respect to all of its features that it has. You can try for free on the market.

  I hope this helps

• Reduction current P7000 is disabled.

  Hello!

  I have a third-party engine control. I have attached to the peripheral P70530. And I NI PXI-7340 and UMI-7774 in control of stepper motor system:

  OR PXI-7340 <--->UMI-7774 <--->P70530---> engine of third party

  All the devices work, stepper motor is the motor, but I have a problem with the current reduction - I need to turn off engine, when it does not.

  When I connect only P70530---> engine (without PXI and UMI) third-party control and to liaise with the PC (via the series RS-232 connector), I informed reduction works - there is no current to step the motor cables. But when I connect the entire system:

  OR PXI-7340 <--->UMI-7774 <--->P70530---> engine of third party

  Current reduction is disabled - motor stay without impulse control, but there are currently in step motor wiring and tree holds.

  Where can be a problem?

  Hi all!

  Today, I've solved the problem!

  I start from the beginning - power supply. I used Acopian 24V unregulated power sourse to UMI and P70530. And it was really "unregulated" - she gives 27, 7V on output - it is not bad for power amplifier, but UMI input voltage it is possible use only 24V +-10% (26, 4 v - max). After I start using another sourse of power with exactly 24V output - all start to work right. Axes are killing, tree is free.

  I thank all of this support are full of aid.

• Jack on speaker N5050

  Can I get information about jack speaker its Inspiron 15 (N5050) (where the sign of the helmet is represented) combination of interface? Y at - it all? For example, then after this plug (where is represented the micro sign) has a: it can be used not only for the microphone connection, but also for "Line-In" connection. My question is addressed to competent engineers, knowing N5050 techspecs.

  I could receive a knowledge exactly, speaker can be used as a "Line-Out", or, in other words, he has the combination with "Line-out"? It is very important, because sound I want to use is prohibited for binding connector speaker and authorized only for the 'Line Out', otherwise it will be damaged.

  I hope that the comments of the competent Dell technicians. Thank you.

  Hello. Dell engineers do not personally answer here on the Dell Community Forum. However, I think I can answer your question. I'm no sound engineer, but I am well informed on the audio in general and audio Dell laptop in particular.

  The purpose of the output jack must be a headphone jack and an output jack line. You can use it safely in the form of a line.

  green_DellSupport

  It is very important, because its material I want to use is forbidden for binding connector speaker

  This means you can't plug your sound equipment directly on a power amplifier speaker terminals.

• Why my dial of the watch is amplified? I can't return to normal size without turning off power.

  Why is my dial sport 38mm enlarged? I can't return to normal size without turning off power. How prevent and repair without turning extinguished/turned on?

  Hello

  Zoom (an accessibility function) has been activated on your watch.

  • To turn off the Zoom:
    • On your iPhone, in the application of the watch, go to: My Watch (tab) > general > accessibility > Zoom - put it off.
    • Or on your watch, go to: homescreen (via a simple press on the digital Crown) > (cog icon) settings > general > accessibility > Zoom - tap and enable / disable.
  • If the accessibility shortcut has been enabled and configured for the Zoom, you can also enable and disable functionality more conveniently:
    • On your watch: quickly press the digital Crown (the round button) three times.
  • To set up accessibility shortcuts:
    • On your iPhone, in the application of the watch, go to: Watch My > general > accessibility > accessibility shortcut (bottom) > select / deselect Zoom.

• The charge amplifier power adapter USB

  I come from the QX30 and it uses a USB cable to charge the battery, but on my vacation I rarely takes a computer. Thereore, I use a USB adapter to plug into the wall and I wonder if the amplifier of importance at all. You can get them in 1AMP or 2.1AMP, etc and I normally like the amps higher for faster loading and no problem using an amp to 2 + a with Sony battery/camera?

  Hi checkyourmirror,

  Here are the details based on the specifications of this Cybershot:

  • Maximum load current is 0.9 Amp
  • The maximum charge voltage is DC V 4.2

  If my post answered your question, please mark it as "accept as a Solution.

  Thanks, Dave

• Audio problem Satellite Pro A120 when read by amplifier

  I experienced some problems when trying to music playing through an amplifier, with a cable of the headphone jack on my laptop connected to the auxiliary input amplifier: when the laptop is connected, the amplifier produces static and a high-pitched hum. Oddly, this only happens when the laptop is plugged into the mains. I don't think it's a fault with my amp, like the laptop, when it is connected to the network, also causes of interference with the LCD that I use with it. Is there anyway to fix this? Could this be a fault with the laptop itself, or the power cable?

  Hello Thom

  I have no experience with this, but maybe this can help you http://forums.computers.toshiba-europe.com/forums/thread.jspa?threadID=20824&messageID=76688

  Please post us the result.