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279 Threads found on Load Model
How to make Connections to BLDC Motor ? I am using PIC18F4431 to drive a BLDC motor in Proteus. I want to know how to connect the BLDC motor connections. Attached is the incomplete circuit. Please provide me Motor connections and what should be connected to load terminal and omega terminal of motor ? - - - Updated - - -[
A PV panel characteristic can be well modeled by current biased silicon diodes, or any behavioral model of your choice. As for the title question, do you understand how MPPT works? If so you'll know that it involves some kind of intentional modulation of the PV panel load, measurement of the differential I/V characteristic in this point (...)
Seems modeling problem if the datasheet says that the transistor is unconditional stable whatever the load is.
Since you can extract the Optimum load Impedance of the amplifier, you don't need the Output Impedance anymore.
The input impedance of transmission line is given by Zo*(1 + Γ*exp(-2*γ*l))/(1 - Γ*exp(-2*γ*l)). Where Γ is the reflection coefficient at the load end, l is the length of the line and γ is the propagation constant. For short circuit Γ is -1 and open cicuit Γ is 1. Thus geometric mean of sqrt(Zshort*Zopen) is
It is almost certainly a TNY267P but before you replace it and the fuse, check for short circuits between each of the output rails and also shorts across the diodes in the transformer secondary. Anything like that will increase the load on the PSU and add extra stress to IC3. It would be worthwhile doing a simple DVM check of all the components g
Why are you running the motor without a load for it?
Hi, I am simulating an amplifier in EM mode of Ansoft by importing the S2P file as an N-port model. Using the circuit designer with ideal loads of 50 ohms, I get the right gain (S21 parameter) of 13 dB. When using microstrip lines with physical dimensions corresponding to 50 ohm load, it shows -3 dB gain. I don't understand what I am (...)
Usually models give you a nominal current. Was there any load on the op amp output when you measured the current? Did you get that model from Analog Devices?
"Pulse" refers to the square wave current waveform in case b, I presume. It has been already explained that the waveform is cause by connecting a current source as load, which is more a theoretical model than a real load case. You can however come quite near to it by using a large inductor with series resistance as load.
At the extremes, a PV panel provides max V, min A (light load)... or max A, min V (heavy load). You get max power at some middle load setting. To model this behavior, I have never seen a simple method. A normal role for a PV panel is to charge a battery, say from 10.5V (empty) to 14.5V (full). Therefore a reasonable (...)
If I understand - PC has an internet connection and WiFi Pi has WiFi but you can't use it because you need to load software first. There is an ethernet connection between the PC and Pi. Can't you download the programs you need on the PC, copy them to the Pi over ethernet to a temporary directory then install them from the Pi console/CLI? Brian.
Hi, I am learning to work with LTSpice and I am also very interested about the "how" of grid tied invertors, so I decided to make a very simplified and basic circuit diagram in LtSpice that could be simulated. Reference see starting points
Very bad circuit with unclamped inductive load, driving the FET into avalanche breakdown.
While trying to load a cpf file, I get an error like this from Encounter Digital Implementation System. What could be the possible reason? Error: create_global_connection: {Command 'create_global_connection' is not allowed outside design or macro model scope.} Also, how can I identify that whether my cpf file is loaded correctl
122009 When we model thermal noise of a resistor, to be delivered thermal noise power kTB, load resistance and source resistance are matched. So noise source voltage has square root 4kTRB(R is matched resistance). And in Mosfet when we model thermal noise of channel resistance, as you know channel resistance of mosfet is
hello folks, There are three types of wire load models, which one is selected for the perticular synthesis and its selection is depends on what parameters?? kindly help me. Regards Dha_synth
Can Some body suggest Some Reference on how to model Bond wire inductor as circuit element and use to simulate your circuit in Spectre RF simulator ??
What you might be having is IBIS model of I/O buffer (not of oscillator). You would need to provide 50Mhz clock at input, package parasitics would already be there specified in IBIS model. You would need to terminate this by connecting TLINE and appropriate load at output, to see any reflections etc.
Hello guys, Can I get the opt load of a LDMOS, Only with a s2p? I have a new RF PA design, the RF LD MOS manufacturer only offer the s parameter, dont have a nonlinear model. so can i get the opt load for max power out? and how to do? :?: thanks for your input.
I am now really confused. I have a teg data sheet that gives the matched voltage as 5.26 and the matched current of 0.76 with a matched load resistance of 6.9R. This is were I'm confused. If I draw a model with a voltage source Vmatched a source resistance Rs and load resistance RL. The total matched resistance is 5.26v/0.76a giving Rtotal (...)
The top wireload model is the case where in the nets at the sub system level inherit the top level wire load model even if the sub system has a different wire load model associated with it. While in the case of enclosed the nets that are completely within the sub system have the wire (...)
A PV panel puts out high A at low V, or low A at high V. It depends on how much you load it. Example: 0.1 A @ 20V (2W, light load) 4 A @ 0.5 V (2W, heavy load) Maximum power transfer is at a middle point. Example, 2A @ 12V (24W, medium load). This is difficult behavior to model in a component. I have not (...)
Hi Are guys familiar of APCFIX program? if anyone have the link where to down load it for free? kindly share...thanks
Some reservations: The LCRC model represents the transducer near it's resonance frequency, but not far from fundamental resonance frequency or e.g. overtone resonances. The "R" parameter respresents the sum of internal losses and external energy transfer, so it's supposed to change with the load conditions like interfacing the transducer with di
You don't have to load any model. The file which you downloaded from Avago's website will create a project file under your ADS user directory ( by default ). If you open this project in ADS you will see a reference schematic and its associated symbol.( If there isn't a symbol, create a proper one ). Then you can use this schematic and his (...)
Response time depends on light intensity (uA) and wavelength(nm) and load resistance. Since photodiodes are current sources, the RC response time is a tradeoff with voltage sensitivity and speed. Do you need spectrum equalized to eye response or silicon response which is heavily weighted towards Infrared? If daylight eye corrected response is e
Have you disabled ADC and other multiplexed function on RC0 and other pins used for MMC SD Card communication ? Post your complete mikroC project files. Zip and post your Proteus file. Have you created an .mmc file to load into MMC model of Proteus using winImage 8.9 ?
National spice model for LM741 has output voltage limit dependant on output current. At 660 ohm load it is 10.4V and at 6600 ohm it is 10.9V. Four other types of LM741 which I have has fixed limit at 10.9V. Supply is +-12V. This comparison shows that models are inaccurate at extremes and simulation can be misleading. Doubts can be resolved (...)
Hello, Are you doing Pre-layout or Post layout STA? If Pre-layout, have you set the wire load model? Can you please post script for same? So we can better understand that which constraints you given? Because constraints is major part for STA. Regards, Maulin
The effective measured primary impedance is a function the Lp, Ls,Lm , Rp, Rs and turns ratio a as shown in the formulae. In addition, the load impedance transformed to the primary side would be included , as Rs might be meaningless without a load. This model might be inaccurate for you as it neglects the inter-winding capacitance,
Did you read the datasheet specification about required minimal load (10%) and cross regulation of dual output types? It's quite normal behaviour of standard DC/DC converters.
Looks like a really old model that often required 10% minimum load to regulate properly on main 5V. I have experienced hissing sounds from poor capacitive loading on boost PFM regulators that run from buck PWM step down main supplies, which might dependant on previous issue and or oxidized old caps from long periods of no excitation.
What type of motor? Normally brakes are just transferring motor from input to ground resistor on some motor types to act as generator with heavy load to stop quickly, but winding resistance , arcing and current are factors to be considered. Do you have motor model? for your method, two cascaded timers are required.
Hi all, I am trying to start a new project, I want to make a new controller using an ATmega or a PIC for my top load automatic washing machine, a Samsung model WA90F3. So I need its service manual for studying its operations and what kind of transducers it uses. I did a google search but no result for my model or any samsung top (...)
Because they never operate in linear small signal fashion, linear small signal analysis can't get a grip. Maybe if you created a state-space-average-model abstraction you could get some idea. But I'd settle (heh) for a transient load-step, line-step, inject-perturbation series of analyses and just eyeball it for whether it remains within regul
with ref from this Thread - 1. I have understood in ZWLM - Zero wire load model, R & C value is '0' but still not sure about other parameters like area, slope, fanout = ? 2. People are suggesting that I can write ZWLM on my own using libray compiler How to do it? - Do I have to use std cell l
Hello! I am designing a board that can drive DC motors and servos. The servos are plain RC model servos, and they can be powered from "3.5 to 8 V under load" (that's what is written on the box). My board can drive basically any DC motor up to 500 mA and from 3V to 15V (There is an input voltage measurement so that the PWM adapts automatically
Hi, I have CCD and Amplifier that are connected by a Flexi Cable with 37 microType-pin Connector. The EM target is to model the system with CST CABLE STUDIO. CCD output impedance is 500 ohm Amplifier External load is 1oKohm or higher Which is the impedance of each in-pin?Is 500ohm or 500/37 ohm? And for the output impedence? Thank yo
Hi, I have some basic questions regarding synthesis: What is the basic difference between wire load model, RC- PLE model and RC-P model used for synthesis. ? What do LEF files and Captable files comprise of ? and how the timing is calculated with these files. Thanks limitless
Yeah, that is a very minor problem compared to the true challenge. Just set your source and load ports to have the wave impedance of the guide u are using.
hi., which wire load model (i.e,. zero or actual )..............which will have more slack........
I simply do not share your optimism about response time and whether that's fast enough to save the converter. So I still recommend you dig until you find a threat model for load dumb that some of these "authorities" have seen fit to bless. They want compliance, to something. Bet on that, and find it. Then you can set about proof. What I see in a c
wlm, is wire load model, for you ? zwlm, never heard. The synthesis tool need the liberty files which contain the std cell & macro descriptions (timing, area, power) to transform the RTL in netlist. THE synthesis tool could used the SDC (synopsys design contraints) to at least constraint the design with a create_clock..., and you could relax i
The voltage measurements suggest that the major voltage drop is in the transformer, which can't be further commented without knowing the model parameters. Without this problem, on-resistance of IRFP250 is already creating a noticeable voltage drop at higher load currents, so we can say that the inverter has a soft output characetristic by design
I believe you can model a PV panel as a voltage source with a resistor in series. Anyway it's a start. Example, if it is rated for 12V at 3A, then it can be modeled by a 24V source and an inline 4 ohm resistor. If you attach a 4 ohm load then it gets 12V at 3A, and that is also your condition of maximum power transfer (impedance matching). (...)
delete usb and load the component again
Sir, I am beginner for design of power amplifier in ADS2009. I have noticed in the ADS 2009 Design Guide > Power Amplifier Examples - By Class Of Operation > class B > load Pull -PAE,Output Power Contours, they have taken the GaAsFET FET1 transistor nonlinear model and also shown the STATZ_model. I am having the following doubts (...)
Hi, before your going to Place and Route the sanity checks zero wire load model we do the timing also we do reg2reg is positive or some margin.... and it's not more than 200ps or 500ps ,it' depend upon the top level timing margin
hi to all, i designed stand alone PV system with super capacitor model in SIMULINK. PV array output connected to boost converter ,boost converter output is connected to single phase inverter.inverter output is fed to RL load.and PV array output is also connected to battery through buck boost converter. please suggest me how to design a lead

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