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61 Threads found on edaboard.com: **Mathematic**

I did that. Used x100 analog amplifier based on cheapest LM358. But the **mathematic** was a bit complex. Calibration needed with linear aqualization. Cold junction was fake - used 20 degrees (indoor use only).

Microcontrollers :: 03-24-2017 08:33 :: Easyrider83 :: Replies: **8** :: Views: **414**

atan function has some simple symmetry properties that helps you to make the table. Unfortunaterly an important relation isn't mentioned in the above wolfram link. But you should find it in any good **mathematic** handbook. Or e.g. at Wikipedia:

PLD, SPLD, GAL, CPLD, FPGA Design :: 03-01-2016 22:23 :: FvM :: Replies: **6** :: Views: **731**

I am currently working on cooperative spectrum sensing . i want to implement a network of secondary users in which two types of user presents, one is honest and remaining are malicious. they sense primary user signal and then take decision about its presence or absence and How can each user effect its neighbor? what would be the **mathematic**al model

Digital communication :: 12-14-2015 07:53 :: usmanpk99 :: Replies: **0** :: Views: **482**

Hello dear guys and dear ladies;
I am getting convergence error whil using FDTD method in FEKO. When I searched in the internet I reached very theoratical explanations and I am not numerical **mathematic** expert, just using FEKO. Can you explain me what is convergence in FDTD method ? Why may I be getting this error ? What can I do to prevent this

Electromagnetic Design and Simulation :: 12-11-2015 08:58 :: erayarik :: Replies: **0** :: Views: **339**

The first thing I imagine is a FSM where in the first state you get the number, then in the second you do the operation and third you display the resul.
On way to do it is by getting the complement of the number (e.g. 10010 --> 01101) and then add 1 to it (so the final result would be 01110).
I'm sure there is a more complex **mathematic** procedure to

Elementary Electronic Questions :: 04-18-2014 07:27 :: Luis Daniel Bola?os :: Replies: **1** :: Views: **897**

It's quite simple **mathematic** in any case. But before you jump into conclusions, you should specify the load behaviour. You are assuming a constant P load. That's rather unlikely, except for a view electronic devices.

Elementary Electronic Questions :: 04-12-2013 16:29 :: FvM :: Replies: **1** :: Views: **371**

The **mathematic** can be found at Wikipedia
Rogowski coils have no magnetic core. HV capability is a matter of insulation, which can be chosen according to your needs.
Several application notes and basic literature can be found here
See also:

Analog Circuit Design :: 11-04-2012 11:28 :: FvM :: Replies: **1** :: Views: **1057**

You are presenting a lot of **mathematic** expressions that you apparently don't fully understand. But you don't tell what you exactly want to achieve.
E.g. what's the expected output of the signal analysis? Is it a "static" spectrum, or spectral distribution versus time (a spectrogram) or something else? In which regard do you want to model musica

Digital Signal Processing :: 10-02-2012 06:01 :: FvM :: Replies: **10** :: Views: **802**

Both 991ES and 991MS are good and perform all possible operations for Engineering **mathematic**s.
You have quite good advantages in 991ES. Its like you can view decimal point numbers in fractional form.
eg: 1/2 instead of 0.5
This is a good advantage when u need final answers in fractional form.
The above mentioned feature is not actually a di

Mathematics and Physics :: 06-26-2012 21:01 :: Prashanth.vinnakota :: Replies: **1** :: Views: **794**

Hello everybody,
I'm simulating a circuit in Pspice. I need to optimize 2 different parameters in the same time and alsolink others to them trough a **mathematic** expression.
The parametric AC simulation permits only to change one parameter or other Elemet values if theres a **mathematic** expression that links them to this Parameter.
A nested

Analog Circuit Design :: 06-04-2012 07:00 :: caledonia :: Replies: **4** :: Views: **620**

Hi
I would be glad if help me to find a good subject about RF circuit&System for analysis and simulation from **mathematic** base , for example volttra series analysis of power amplifier

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 12-15-2011 16:50 :: electronicman26 :: Replies: **2** :: Views: **1038**

It is " MMANA-GAL " and not Malagal.
It is free software. And is used to analyze the design of an antenna using different **mathematic**al processes.
You can download it here:
Download MMANA-GAL 1.2.0.20 Free - A program to analyze the desgin of an antenna using different **mathematic**al proces

Software Recommendations :: 09-24-2011 06:41 :: Raza :: Replies: **6** :: Views: **69**

hi:
I have a **mathematic** equation 'A' to demonstrate:
1? + 3? + ...... + (2n+1)? = (n+1)(2n+1)(2n+3)/3
I have a known equation 'B':
1? + 2? + 3? + .... + n? = n(n+1)(2n+1) /6
how to use 'B' to demonstrate 'A' ?

Mathematics and Physics :: 08-16-2010 02:00 :: hero0765 :: Replies: **2** :: Views: **978**

Hello guys.
I am looking for a way to derive a **mathematic** formulation of PML in the x direction for the hyperbolic equation:
Ut + Ux + Uy =0
and for the hyperbolic system :
Ut + AUx + BUy = 0 ; where
A=
B= [0 0 1; 0 0 0; 1 0 0

Electromagnetic Design and Simulation :: 05-21-2010 15:58 :: ziyadz :: Replies: **0** :: Views: **1183**

i have written a C code for my expression. but i am not sure if my MCU could run it or not...
can my MCU support to do this **mathematic** expression?
the C code goes like this...
void EQUA (void)
{
for (x=0; x

Microcontrollers :: 04-10-2010 18:48 :: fypstudent :: Replies: **0** :: Views: **675**

i want to programme a **mathematic** expression into a 8051...
the expression is...
y = 0.002151*exp(-((x-0.5624)/0.0253).^2) + 0.02408*exp(-((x-7.086)/6.804).^2) + 0.002172*exp(-((x+0.0006227)/0.08174).^2) + 0.0006227*exp(-((x-0.4409)/0.06945).^2) + 0.0009454*exp(-((x-0.2971)/0.1107).^2) + 0.0005545*exp(-((x-0.1982)/0.06293).^2) + 0.0009496*exp(-((x

Microcontrollers :: 02-28-2010 13:29 :: fypstudent :: Replies: **5** :: Views: **1076**

how does equation 9.3 come out(the last equation in attachment)? Is there using any **mathematic** theory?

Analog Circuit Design :: 12-05-2009 02:32 :: just_88 :: Replies: **1** :: Views: **1188**

I have a system as above.
I need help with **mathematic** equations for analyzing this system. As far as i understand:
Forward Loop transfer function will be Gfl=K3
Feedback Gfb=K2*K4
Open Loop: Gfl*Gfb
CLosed Loop = Gfl / (1+Gol)
But how i can measure noise from K4 b

Elementary Electronic Questions :: 10-06-2009 16:32 :: drcham :: Replies: **0** :: Views: **848**

what is diff between device simulator silvaco and hfss?both are 3-d Simulator
The fact that simulator is "3D" just tells that it solves equations in 3D space (e.g. x-y-z), but the equations can be quite different - both from **mathematic**al viewpoint (e.g. elliptic, hyperbolic, parabolic), as well as from physics or applica

Electromagnetic Design and Simulation :: 08-20-2009 06:03 :: timof :: Replies: **2** :: Views: **2200**

How do you do use **mathematic** simulation? I tried it, but could not find the blocks, my analogLib library is only components, as far as I know

Analog Circuit Design :: 03-22-2009 00:40 :: Sadegh.j :: Replies: **2** :: Views: **1066**

who can we get the rang of IEEE 's digits that is showable by doing the **mathematic** operation on it ????????
(i wanna know the operation that will be dont not just the rangs of digis)

Microcontrollers :: 10-25-2008 17:36 :: maria anders :: Replies: **0** :: Views: **644**

Hey guys ,
i am designing a project which requires LM35 temperature sensor , generally the output from the sensor voltage is in analogue form and the reading is in LCD, but till now i confuse about **mathematic** to confert in celcius, I using assembly with pic tipy is 16F877, is have any idea to this, what should i do? thanks u

Microcontrollers :: 09-03-2008 10:08 :: rini_fi :: Replies: **2** :: Views: **1185**

I think Both is on concept of calculation on positive axis and both have long time development so sometime It call to be physical model or perhap analytical **mathematic** formula, too.
But more accurrate & proper model should be explored rather than to be modified equation for error limiting.
Phongphan

Digital Signal Processing :: 09-03-2008 11:10 :: phongphanp :: Replies: **6** :: Views: **1148**

Hi members,
Can someone tell me how to implement this function in VHDL:
A*B
Where:
A is a signed 16 bit data
B=∑dij.(2^i)
Thanks in advance

PLD, SPLD, GAL, CPLD, FPGA Design :: 08-11-2008 08:47 :: AdvaRes :: Replies: **3** :: Views: **1068**

Hello,
I'm working on a DCDC buck converter with hysteretic regulator , and I'm looking for a **mathematic** formula of the ripple, or any equation for minimizing this ripple
Many thanks

Elementary Electronic Questions :: 06-23-2008 09:13 :: Elhafed :: Replies: **0** :: Views: **967**

Hi All,
The phase margin is given by the relation below.
Who can demonstrate how we found T1 and T2 ?
I calculated secΦp and tanΦp like shown but I couldnt find the result as it is provided.

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 05-20-2008 14:42 :: AdvaRes :: Replies: **1** :: Views: **713**

used with straight forward **mathematic**s with no special syntaxes. Gives instantaneous and exact results after calculations.

Software Links :: 06-19-2008 06:13 :: s.san2006 :: Replies: **4** :: Views: **1693**

Hi I'm using this ISD2590P IC for voice recording as you can see below :) are two methods to use this IC:
1) Using the Mode function
2) Using the Addressing function
[

Hobby Circuits and Small Projects Problems :: 12-21-2007 16:45 :: umery2k75 :: Replies: **5** :: Views: **5079**

hi everyone ,i want to know why do we use complex exponential **mathematic**s in digital cammunication, but we transmit only real part of the signal .We recover the complex part by using hilbert transformer at receiver.
One reason that i found out was that it simplifies arithmatic operations.
Is there any other reason?
Any response would be helpf

Digital communication :: 07-20-2006 16:30 :: wajahat :: Replies: **7** :: Views: **2108**

Hi guy. I want to calculate the Q factor of my resonant circuit ( asume that abitrary)
In some material I see that Q=pi*freq*S.delay(1,1).
BUt I did not understand the **mathematic** meaning of this one. Any can help me .
In some case we will have S.delay(1,1) is negative, so must be used abs(S.delay(1,1)???
If I calculate Q=imag/real so in the res

RF, Microwave, Antennas and Optics :: 11-21-2007 17:45 :: bkd :: Replies: **0** :: Views: **1155**

Can u raise some examples that **mathematic** model is 1 degree ODE?

Mathematics and Physics :: 08-29-2007 12:20 :: david753 :: Replies: **1** :: Views: **919**

Define Slew rate in **mathematic** term.

Elementary Electronic Questions :: 04-06-2007 19:50 :: shababkietien :: Replies: **4** :: Views: **3150**

Say A is proportional to the time derivative of B, e.g. Faraday's law states that induced emf E = dΦ/dt = Ldi/dt. When A and B are represented in phasor diagram, why phasor A leads phasor B? Anything to do with '**mathematic**' theory?
Thanks

Mathematics and Physics :: 02-11-2007 11:45 :: powersys :: Replies: **5** :: Views: **1738**

yes, agree with above. but you should also have a solid knowledge on **mathematic**. you will find that is so important that if you want to be a good analog designer!!

Analog Circuit Design :: 02-08-2007 17:02 :: debutant :: Replies: **3** :: Views: **937**

HI
Draw->Eqution based surface->and you will find it is easy to do if you are very familiar with **mathematic**.
Regards!
Edmund

Electromagnetic Design and Simulation :: 02-06-2007 14:18 :: EdmundZheng :: Replies: **6** :: Views: **3521**

Does somebody have ebook for preparing for **mathematic** or physic olympiad?
What is the best book for physics?
Thanks

Mathematics and Physics :: 07-11-2006 06:43 :: haso11 :: Replies: **7** :: Views: **1361**

for calculating sin & cos , you can use "Taylor expansion" , then you can calculate sin & cos with only + , - , * . / , this is the way used in computers .
refer to **mathematic** books or ask from whom knows it ... to find what it is .

PLD, SPLD, GAL, CPLD, FPGA Design :: 12-27-2006 11:45 :: hm_fa_da :: Replies: **10** :: Views: **15484**

Hello,
I have a question about **mathematic** equation at the Microwave Office v.7.
How could be 2d array defined directly at the equation window?
For example 1D vector is simply to defined as vec={1,2,3,4,5} or vec={"a","b","c","d"} and for this definition vec: 1 (a)
But I would like to define 2D array, and arr={{1,2,3},{4,5,6}} is incorr

Software Problems, Hints and Reviews :: 11-20-2006 10:25 :: Vadim :: Replies: **0** :: Views: **1015**

Hello..guyss...
I just found the form of **mathematic** press and i want too pass it in matlab or(c,c++,)expression...
(x1+x2+x3..+xn)^k..
if n=2 and k=2..the type is become to..
(x1+x2)^2=x1^2+2x1x2+x2^2
but this is simple i want this identify with more terms..(more xn)and more (..^)
Thanks again..
The type is more analytically described in th

PC Programming and Interfacing :: 11-06-2006 09:11 :: Nikolas83 :: Replies: **2** :: Views: **860**

EDUCATIONAL CERTIFICATE:
**mathematic** DIPLOA-
B.S OF SOFTWARE COMPUTER ENGINEER ?
MY PREVIOUS WORK EXPERIENCES:
1- MEHR AS A ANFORMATIK AS A PART-TIME SELL ENGINEER(1381-1382)
2- POOYA RAIMAND PAITAKHT - WEB DESIGHN PROJECT IN A GROUP(1383-1384)
3-FARHIKHTEGAN INSTITUE(1383-1385)
INDIVIDUAL PROFICIENIES:
1- ENGLISH SPEAK

EDA Jobs :: 09-12-2006 19:55 :: dorsa_toops :: Replies: **0** :: Views: **780**

Image processing is the process which can manipulate the digital image in terms of pixel of the images. You can enhance the quality of image, compress image, and many other modification. This can be done by using filter, or other **mathematic** equations. If you have Matlab now, you can try explore the Image Processing toolbox, then you can understand

Digital Signal Processing :: 08-22-2006 07:38 :: leekk8 :: Replies: **1** :: Views: **1401**

Do you know a **mathematic** formulation that relates these quantities??

Mathematics and Physics :: 08-08-2006 17:33 :: panoum :: Replies: **2** :: Views: **1890**

I have find lots of paper on improving linearity of LNA, but they are mainly focused on the **mathematic** analysis of intermodulation distortion while giving no detailed circuits about how to improve the linearity. Who can give me some documents on how to improve the linearity

RF, Microwave, Antennas and Optics :: 05-08-2006 02:55 :: wizardyhnr :: Replies: **4** :: Views: **1119**

Microcontrollers :: 03-26-2006 20:56 :: silvio :: Replies: **6** :: Views: **2178**

find the book "**mathematic** foundamental of inverse problems"

Mathematics and Physics :: 04-06-2006 14:41 :: maple :: Replies: **7** :: Views: **1011**

hi,
you have to use computer arithmetic ,not **mathematic**. in digital world, only adder exist. so you have to implement your algorithm to adder&other control logic.
there are so many books describing "computer arithmetic", you can find them as reference and very useful.

ASIC Design Methodologies and Tools (Digital) :: 03-21-2006 03:36 :: linuxluo :: Replies: **4** :: Views: **1076**

hi Nimer
there are many books about Partial differential equation.for example
"Advance engineering **mathematic**" by Kreyzic
"Advance engineering **mathematic**" by wiley
you can reffer to and visit many books in there.
hamid

Mathematics and Physics :: 01-01-2006 06:01 :: hamidr_karami :: Replies: **2** :: Views: **1001**

Hello all！！
Does someone use **mathematic**???
I have a question about **mathematic**a code -----
""Table[Plot[Sin Cos""
What this code mean ??????
Thanks Thanks

Mathematics and Physics :: 08-17-2005 08:42 :: v9260019 :: Replies: **1** :: Views: **804**

Hello everyone
If let in=input and out=output
in:=(2+I)^5
out:=-38+41i
then
in:=%^(1/5)
out:=2+i
the answer 2+i=2+i------right, but the following have some problem
in:=(5+6I)^5
out:=-9475-27474i
then
in:=%^(1/5)
out:=(-9475-27474i)^(1/5)
in:=N
out:=7.25142-2.90118i
the answer 7.25142-2.90118i ≠

Software Problems, Hints and Reviews :: 08-18-2005 09:49 :: v9260019 :: Replies: **2** :: Views: **819**

This isn't really a **mathematic** proof, but does explain.
u(-t) is always 0 for all positive values of t, and 1 for all negative values of t.
-u(t) is always -1 for all positive values of t, and 0 for all negative values of t.
- Jayson

Mathematics and Physics :: 06-05-2005 00:57 :: Jayson :: Replies: **15** :: Views: **1560**

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