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Type: Posts; User: vicky001.iith

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  1. Replies
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    Closed: Re: purpose of two PIN diodes in series

    2 diodes in series is only for voltage ratings(mostly to drop voltage by ~1Volt).Isolation won't be different for single diode and 2 diode in series.
  2. Closed: Re: startup circuit for microcontroller based converter

    One more way is using zener diode to step voltage from 12V to 5V. As shown in this figure http://obrazki.elektroda.pl/4747205800_1418038107.jpg
    But it can have some noisy output(A surge in voltage...
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    Closed: Re: I2C Interrupt vs Polling Method;

    When I started using interrupts method, it was horrible because Interrupts increase risk by being non-synchronous(mostly delaying) with the rest of the program and it took time to understand how to...
  4. [PIC]Closed: Re: need c code for scrolling lcd using pic18f4550

    Take little help from and write code.
    http://www.microchip.com/forums/m705351.aspx
    or install MPLAB X IDE libraries there u can find sample codes. edit these code according to your project work.
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    Closed: Re: Voltage divider for ac

    It will be better if you can post your input and output waveform.As of what i understood from problem description i think you want to reduce the AC voltage,well in that case Use Electrolytic...
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    Closed: Relay getting stucked

    Hello Everyone,I am controlling a very high load(Air condition type) using a realy switch.But Relay get stuck after continuous operating(ON/OFF) of the switch.
    Possible reason:- As high load gets...
  7. Closed: Job Opportunity for PCB Designer expert

    Hello everyone,
    My name is Vikram Garhwal. I work for Orvito Technologies. we are US based company headquartered in Massachusetts, USA, Orvito which works in wireless automation...
  8. Closed: Re: "Consider Replacing Your Battery" in Dell N4030

    Yeah, i read a lot about this issue in windows 7...
    You may look into this guy's method. He kind of solved it.Here is the link:-...
  9. Closed: Re: "Consider Replacing Your Battery" in Dell N4030

    I was not able to understand this part ""I've tried to charge until full, after a full battery save mode turned on the laptop and left to power off , and then turned on again mode normally , but that...
  10. Closed: Re: "Consider Replacing Your Battery" in Dell N4030

    Not able to understand your language....Can you elaborate a little more ??
  11. Closed: Re: Relation between filters and controllers

    Filter :- We use it for allowing only desired part of signal.
    Controller :- We use it for reducing error and making system stable.
    So filter can be used at controller if it fulfilling the...
  12. Closed: Re: best beginer book for microcontroller

    For beginner "8051 microcontroller and embedded system by mazidi" is recommended.
  13. Closed: Re: Help with Hall effect sensor in DC-AC Converter

    Use a 10k pull-up resistor between power and output (usually from pin 3) to get a clear on/off state.
  14. Closed: Re: IR Emitter - Regarding Angle of Half Intensity

    Yeah it is absolutely correct..
    Half Intensity refers to the viewing angle rating as specified by the LED manufacturer. This simply states that at X degrees the LED intensity will be ˝ as intense...
  15. Closed: Re: biasing equations of npn & pnp transistors

    Read 9.7 index of this pdf :- http://www.talkingelectronics.com/Download%20eBooks/Principles%20of%20electronics/CH-09.pdf
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    Closed: Re: Hspice software requirement

    Free version is not available ... i couldn't find any one..
    Contact your local cadence office. They may provide an evaluation period license.
    OR Try your luck with this one :-...
  17. Closed: Re: Delay Calculation using C for AT89C51 Controller with 11.0592MHz crystal frequenc

    Try this one
    time is in milliseconds


    void delay(unsigned int time) // SUB FUNCTIONS
    {
    unsigned char pause, i = 0; //DECLARE PAUSE AS UNSIGNED CHAR
    short int temp = 0;

    temp =...
  18. Closed: Re: i need a Matlab code for feature extraction with Discrete Fourier, Wavelet transf

    I couldn't find a matlab code...Matlab tools are available for these purpose(Image extraction).If you want to use.they are avail on Matlab site only

    Code :-

    % This is a program for extracting...
  19. Closed: Re: i need a Matlab code for feature extraction with Discrete Fourier, Wavelet transf

    For fourier and wavelet :- http://www.codeproject.com/Articles/479975/Image-Tracking-and-Computer-Vision-Using-Fourier-I
    These are sample codes only...not sure whether it will give the efficient...
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    Closed: Re: Hspice software requirement

    No LTspice is not suitable for this purpose.
    If you need it for basic simulation then..use this one..its free http://www.monolithic3d.com/simulators1.html
    or go for cadence only
  21. Closed: Re: Embedded or vlsi-- whcich has better future??

    Which field has a better future seems a good point to discuss.

    First of all These technologies are complementary. A typical embedded system has VLSI components integrated into it. So both fields...
  22. Closed: Re: i need a Matlab code for feature extraction with Discrete Fourier, Wavelet transf

    What kind of features you want to extract. ...image/speech ...Codes are easily avail on Matlab site
    Ex. ...
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    Closed: Re: Hspice software requirement

    Download this one... http://www.anasoft.co.uk/download.htm

    - - - Updated - - -

    Hspice is not free.
    OR use this one :- http://www.linear.com/designtools/software/#LTspice
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    Closed: Re: Low threshold voltage

    Thershold value calculation and its factors explained very well in wikipedia :- http://en.wikipedia.org/wiki/Threshold_voltage
    Also you can check this one...
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    Closed: Re: Alternative for relays

    You can use triacs (thyristors) instead of relays .
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