Search Engine

First Course

Add Question

209 Threads found on First Course
first i just know A VERY LITTLE basics of OrCad Capture But my course project is about this circuit 134217 That's (Sound sensitive dancing leds ) Doing it On breadboard and simulating it on orCAD after some research i found out that orCAD can't simulate LEDs , mic and transistor and what i need for the presentation is
first, there are (and I have designed & seen installed to production) precision voltage references that are rated over at least -55C to 125C. What I do not see, is a quantitative spec on "stable". This of course varies by the application; a power supply reference is good at 1% but if you imagine you're going to make a 16-bit data acquisition lineup
Dear All This is related to PIC 16F877a interrupt Lets assume that the micro controller interrupted by external interrupt then its gone to interrupt vector 0x04 and global interrupt was disabled After interrupt was fired another two flags were set Ex TMR0IF and TMR1IF still in the ISR vector my question is which interrupt will
first stage output/second stage input node is high impedance, too. Diode connected? I don't see a diode connected MOSFET. The compensation network will of course reduce the OTA output impedance, as well as the input impedance of the second stage.
... You have also unbalanced output stage and first stage which can produce additional offset. I think this shouldn't matter at gain=1 feedback (and no gate input current, of course).
At first sight, the code function can shortened as bcd = code, because it simply performs a bit-by-bit copy. But what did you want to achieve?
Your first question is malformed. As to your second, yes; this is exactly how CMOS-SOI RF switches are made. There are of course constraints to the application. You could also make a DC switch this way if you employed a means of applying a gate charge across an isolation barrier and stored it across G-{S,B}.
I can't remember exactly when I first used the DAC0808 but I think it must have been around 30 years ago so advances in technology means almost all new devices will surpass it in performance. It still works of course but there are now hundreds of better alternatives including many with direct voltage output if that's what you need. Brian.
I have interfaced MCP7940M with AVR. I know working of I2C where in case of RTC write we use following sequence: 1. Start 2. Slave address+Write bit 3. Register address 4. Register data 5. Stop And of course after each byte there is ACK or NACK But actual confusion is in RTC read Definitely first two steps will be as it is only ther
I am creating a second order delta sigma modulator for a fractional n pll. first I created the first order one. It worked ok when I removed the output flip flop that had to act as a comparator. Of course there's some sort of comparator glue logic. However it is combinational circuit. I wrote a code in matlab and it worked fine, designed the (...)
The output of a first order filter can be most simply predicted in time domain, it's just a succession of exponential waves. The first derivative will be always discontinuous, so it can be clearly distinguished from a sine.
You should start with loading A with the first value and add the next 6 before you divide by 7. When you do what you do in your example you start with an unknown A register adding the first value. You can of course clear the A register or load it with 0 before you start the adding(with 7 values. Remember to check that the 7 values does (...)
If you want it to saturate at MAX_Range then just change the first line to: if (I >= MAX_Range) then I <= MAX_Range; Of course once it reaches MAX_Range it will never change, unless you add code to reset I to something else. - - - Updated - - - I also don't understand your usage of resiz
The assumption in your first post is wrong, the voltage is of course reduced for k < 1. There a different methods to describe coupled inductors and it's important to clarify which model you are using. A straightforward model, that's often used in EM analysis of arbitrary conductor geometries is an impedance matrix: Zij = Rij + ωLij V
Before a base current can exist a proper base-to-emitter voltage is required - as a first biasing condition. Of course. It is assumed that there is enough voltage to create the base current. I do not want to argue whether a current causes a voltage or whether a voltage causes a current.
You have too many threads about your noisy printer room. In your first thread you were told that using sound absorbent material for walls, ceiling and floor will reduce the average sound level. Of course earplugs should be used by workers but I recommended noise cancelling headphones.
Assuming of course such a "proto-particle" existed in the first place. As I understand it that is just an extrapolation with no evidence found yet so maybe is didnt start out as small as that in the first place - which would have all manner of consequences I expect. I'm of the opinion the acceleration at the edges is caused by gravity (...)
HFSS doesn't know where your Penrose polyhedron starts (of course there is some first vertex, but you can't be sure yourself). Every operation is performed around the coordinates origin. Therefore, create local coordinate system attached to the object first. But to avoid you project becoming a garbage pile, create local coordinates only (...)
A lot of what can be done and how depends upon what software you have. What PCB software and what Gerber software. Of course, it goes without saying that this should be done in the PCB CAD file first but sometimes they are not always available with legacy data.
i am little bit late to the course,my question is how making the vehicle to get into almost desired speed equation is u=ke. e=r-y if on speed of vehicle is 30 reference speed is 70 km/hr. for the first time we get e=40 as feedback.and further this 40 is carried out in what way in order to get the vehicle to 70 km/hr speed.please help m
first, which model you would like to use or in other words, which model fits your requirements ?? Because there are few model such as Curtice,Angelov,TOM,Skallern-Parker etc that characterize HEMT transistors and every model has advantages and of course disadvantages.If the model parameters are already given, you may use Generic nonlinear HEMT mod
Quite nice project after first step is to do VGA card on CPLD/FPGA. This would be great alternative to 2x16 displays, great learning. Personally I started with Xilinx xc9572xl. This one is cheap, JTAG(loader) is easy to do.
Hi, I am new to micros really and I have chosen this Light Sensor to try and learn, the first thing I need to do though is get the device powered up and I need to find out how to write to the pic registers, I bought an online course but it never mentioned the registers, I need to send a 03h to the 0h control register, if anyone could suggest any
you have first to expand the equation, like a normal expession remembering that: x+x=x*x=x x+!x=1 x*!x=0 using these rules and rearranging I obtained (hope I didn't do errors): Z=a*(1+!be+!bc+ef+d)+!bc*(ef +!d!e+1+d) so in the brackets there is always 1. Z=a+!bc then Z=1 if a=1 or !bc=1 that is b=0 and c=1 z=0 if a=0 and !bc=0 z
How to solve this issue in a manner that does not generate errors in both Design Compiler and Modelsim? By observing VHDL syntax rules when Sel = "0" respectively when Sel(0) = '0' It's not obvious at first sight why sel should be std_logic_vector, but of course it can.
For C programming i recommend 1 C : How to program 2-C Primer Plus 3-C programming a modern approach by K. N. King 4- Writing Bug Free Code by Jerry Jongerius For Embedded C C Programming For Embedded Systems C For The Microprocessor Engineer first Steps With Embedded Systems may be this course be helpful
Hi Rakesh, The following books are useful for PD first read the book thoroughly, you will get good knowledge on PD Follow the blogs All the best
Hi, I am facing a strange error that I cannot figure out. first of all I am using the Smartfusion EVAL KIT to learn embedded desing (both micro-controller & FPGA). There is a great course posted online here Now I reached lab 4 and doing the post lab assignment, which want
Essentially the XBee modules form a cableless serial connection which acts as a transparent pass through of commands and data. The shield you mention in the first reference, aids with interfacing the XBee module with other devices, as the pinouts are only 2mm, not the standard breadboardable 2.54mm. Of course, if you were to design your own P
To answer your first and third questions, I would recommend doing a parametric sweep on the distance between the feed point and the edge of the patch. I'm not familiar with CST, but the best point is of course where the port impedance matches your system impedance (50 Ohms?). Alternatively, if you have the scattering parameters, you want the point
Just to add my ,02$... I took a high speed/signal integrity seminar that pretty much seconded what Marce said: via in between IC and decoupling cap. The reasoning being that the interplane capacitance is the 'first line of defense', the sooner you 'get' to it the better. Off course, that only makes sense if you have interplane capacitance
There are some other aspects to this. first, it's unlikely that the process has been qualified for Vbs<0*Vds=max. Vbs<0 also has the effect of increasing Vdb beyond normal. That means higher silicon fields and more hot carrier generation. People apply this trick, even so. I proposed it in a conference short course over 20 years back (fo
because I want to know faster from other people experience... thanks Hi, Two problems with that philosophy, first you never learn for yourself, second the other person my well be wrong! Clearly those two chips are pin compatible to a degree, but of course the 4520 has many extra pin functions and internal
Hi, I will start MS in September 2013. I want to study in my remaining time. I have taken Microwave course (in which Pozar's first 5 chapter is studied), Antenna course (in which Balanis' first 6 chapter is studied), and 2 UG EMT course (in which Cheng's book is studied). I am asking for these three (...)
dear; is it a course work? first try ur self; if u stuck post the code. see dft help in matlab details. Savor,Best
The first and third inputs are severely distorted. The input levels are much too high causing the outputs to be clipping like mad. Why?? It is normal for a filter to cause phase shift.
Brother you first must specify where are you now and which region on face of the earth you prefer and afford to go for that training..??
I know that you are dealing with digital logic and FPGA since longer time. So I would ask first, what's your own opinion and possibly experience in this regard? Floating point arithmetic can be of course implemented in FPGA when needed. In this case, FPGA are perfectly suited, I think. On the other hand, floating point is surely not the (...)
project presents a home made active subwoofer. The first original thing you can see is the housing. As you can see, the device was closed in a wooden housing ? color of which is ?cherry? (but, of course you can use another color). Dimensions of the housing: 50x42x42. The wall is 30m
Hi, first of all, I am using PIC18F8722 for testing my program i wrote in ASSEMBLY for logging RAW data onto SDHC card ( 8GB Sandisk Class 4) using ( of course ) SPI protocol. Been through every harrowing moment of not using C, and finally wrote the ASSEMBLY program to perfection ( of course with some help), and i simulated my program on (...)
I failed the exam 3 x before passing it. My first attempt was just to see how it is My 2nd and 3rd attempt I was missing 1 or 3 questions to pass it, I complained heavily to Cisco on some of the grammar they had on the new CCNP exams/version, and they kept giving me free retake. It's been almost 2 years I hope Cisco already fixed this exam, if
If the "resistance" means the real part of the impedance, the resistance shouldn't vary with the frequency. Only in a over-simplified first order model. If you consider ESR as the real impedance part of a series equivalent circuit, it will be of course frequency dependend: - because it also represents dielectric losses. By nature o
The way I understand it is that in order to solve 1 + KGH(s) = 0, you first solve GH(s) = 0 which will give you the open loop poles, those are the poles were the root locus plot will begin ( ie the poles for K=0 ) I am afraid, your understanding is not correct. The term (1+GK) is the denominator of the closed-loop
Hello there, I have a course project where I am supposed to design a pipeline ADC with background digital calibration, actually I am still newbie in ADC world. I guess the first step is to build a system level on simulink. Can you please help me ? I will appreciate if there is an example I can follow at first. Also, is there any special (...)
Hello, I need to design a voltage regulator for the term project of an Analog IC course. The input voltage of the regulator should be 8V and the output voltage should be selected between 3V and 5V by external resistors. I found that TSMC 0.35um HV process can withstand 8V supply voltage. I will first simulate the regulator circuit in LTSpice and
Hi All, I attended some latest Xilinx Training Program with lab files. Currently, i decided to sell it as second hand/first hand (use for one time during training - very new). Anyone who looking for Xilinx Training course material, please kindly inform me with private message. I would able to ship it to you. It helps student/R&D design en
I have never seen any designs that would cascade a passive RC-filter before Sallen-Key filter. It's a standard third order low- or high-pass topology. Of course the passive filter has to be reflected in the values of active second order block. The technique is called "absorb first order". I presume that you are trying to implement a
If you aren't concerned about a short overshoot in the current before the limit occurs, then the first method should be OK. If you want to limit the overshoot, then the second method is faster. Of course the LM317 doesn't need a current limit since it is internally protected for both over-current and over-temperature. Yes, the second method may
Hi, This my first term in master study And I need an idea for a term project on matlab in digital signal processing course. And I am planning for my master thesis to be about wireless communications. So I need a term project to be the beginning. one condition: the idea should be an application... thanks for any help in advance,,,
Hello i'am a beginner in mcu programming and i need to simulate my first program with Multisim but ido not find a crystal whith 4MHZ on the component list i have 3 Mhz crystal can i use it ?