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Recent content by ciitv

  1. C

    for a signal does freq spectrum change with time ?

    hi, i know that for a given signal, there exists a corresponding freq spectrum. but i'm am baffled by my thought. can somebody explain this: imagine this time domain signal: 10*sin(wt)u(-t)+5sin(wt)u(t)..i.e.sinusoidal signal is at one amplitude for -inf to 0 and another amp for 0 to +inf...
  2. C

    Ideas for project in microcontroller and telecom fields

    Re: Need ur Advice you can demonstrate time division multiplexing using microcontrollers
  3. C

    Which subject is best ?

    ECE because you can get best of both worlds (CS and EEE) !
  4. C

    A stupid question -- What is regulator?

    Not a stupid answer : A regulator that you often hear about is Voltage regulator.There are other types also. Now a voltage regulator regulates the voltage - it keeps the voltage at a constant level regardless of fluctuations at input. Most frequently used regulator - LM7805. It keeps the...
  5. C

    Unable to run Matlab 7

    Unable to run Matlab 7 i'm unable to use matlab 7 on Windows XP SP2 now. when i run the matlab program the flash screen appears and disappears but nothing happens(no workspace). it was working when i last used it a couple of months ago.even the m file editor and un-install programs do...
  6. C

    Antivirusing flash memories

    try reprogramming the flash. if its a device that u bought then contact the manufacturer
  7. C

    dsp processor vs microcontroller

    dsp processor basics major difference is the operations available and the data that both processors handle
  8. C

    what exactly is "phase" ?

    i'm unable to get the concept of "phase". i come across this word in several contexts like phase response, cos(wt + phase), e(jwt). ...... Can somebody explain what phase is mathematically and physically. and how to accept it by intution . or reference to any website would be also helpful.
  9. C

    AVR noise problem in a small DC motor

    avr+filter noise Incidentally this happened to be my first circuit with avr. I too used 7805 and a hexfet for driving a motor. It worked. You should first check your algorithm. If thats not the problem try using 2 capacitors one at iput an dother at oput of 7805
  10. C

    What is the best controller for automation application?

    Re: HAI AVR is simply amazing. It is very easy to program the chip, has a lot of features and does a decent job.
  11. C

    Commercial atmel MCU programmer

    atavrisp-nd I'm not sure about how much programmers cost... but for 50 bucks you could make yourself one. It is a very simple circuit. Google 'pony programmer'. check the first link you get. there are two schematics given in the website. go for the simple one.
  12. C

    Best circits simulator?

    Multisim is more intutive . Its very simple to learn aswell. You also have instrument panels that resemble actual lab equipment
  13. C

    What is Impulse response ?

    Let make it simple by taking an analogy. What is slap response ? The way you respond when somebody slaps you. What is impulse response then ? The way a system responds at the output when an impulse(think of it as an electrical 'surge' for time being) is applied at the input. Is it applicable...
  14. C

    Graphics using assembly language ? Help!

    never mind. I found a book by Irvin Kip . It also has some online resources. You can google it. It explains how to plot.
  15. C

    what are 'pseudo bipolar' input ADCs ?

    what is pseudo bipolar input Whats the difference between pseudo bipolar input and truely bipolar input ADC ? I haven't found a site or a book that explains the term pseudo bipolar. Any link or book or suggestion is welcome.

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