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Type: Posts; User: nikhilsigma

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  1. Closed: Re: Defining address in microcontroller using preprocessor (#define)

    Thank you very much for the explanation.
    But I want to know how "port_input = GPIO_PORTA_DATA_R" lets us access the register directly?

    I understand that the address of a register named...
  2. Closed: Defining address in microcontroller using preprocessor (#define)

    Hello Everyone,

    I came across following statement, but I am unable to understand it.
    Kindly explain in detail about what exactly is happening.


    #define GPIO_PORTA_DATA_R (*((volatile...
  3. [PIC]Closed: PIC16f1716 - I2C Initialization problem

    Hello Everyone,

    I am trying to implement I2C on PIC16f1716. I have written basic code for I2C initialization which is shown below.

    PROBLEM: Even after setting START bit "SEN" nothing happens...
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    Closed: Digital Video Format

    I am confused between Digital Video Signal Formats like

    720p_60_444,
    720p_60_422,
    720p_60_420,
    720p_60_444_Time reference signal,
    720p_60_422_Time reference signal,
    720p_60_420_Time...
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    Closed: Re: Application Engineer Vs Design Engineer

    In Japan....at kawasaki.. :)
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    Closed: Re: opamp feedback calculation

    its looking gud... :)
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    [SOLVED]Closed: Re: Digital system desgin Project

    u can do that using microcontroller easily.... :)
  8. Closed: Re: controling the out put voltage of Atmega 8L

    the microcontroller will give output same as what ever the supply voltage is.....but if you want 2V output....then u can use a voltage divider configuration.....and if current requirements are high u...
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    Closed: Re: Buffer from a CURRENT FEEDBACK AMPLIFIER

    crutschow Thanks alot for helping....

    I have two questions...

    1. that configuration uses VL PIN which is not present in LM7171 opamp.....so how can I design a full wave or half wave rectifier...
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    Closed: Re: Buffer from a CURRENT FEEDBACK AMPLIFIER

    okay....I need to measure the amplitude of sine wave....so what should I do ???
    please help

    - - - Updated - - -

    frequency of operation will always be 1MHz....and maximum voltage level of...
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    Closed: Re: Buffer from a CURRENT FEEDBACK AMPLIFIER

    anything will work....

    my aim is to detect the amplitude of incoming sin wave....
    and after taking reading with uC's ADC, sin wave will be turned off.....so the output of peak detector can delay...
  12. Closed: 1MHz Crystal Oscillator design...Please help

    Hey guys...

    I want to make a 1MHz sine wave oscillator...with following characteristics...

    1. Frequency : 1MHz.....I have a 1MHz crystal
    2. Supply Voltage available : anything between +-12V...
  13. Closed: Re: Hello i want to start pic programming with Hitech c can any one help me

    start by writing simple c codes for turning leds ON & OFF, put in some delays, etc...play around with microcontroller....

    after that send data, whatever required by the peripheral device....
    ...
  14. Closed: Re: How I can add a cooler with this circuit?

    if u want to drive a 12V dc fan....u can use a simple transistor driver circuit...
    1. read the resistance of fan from multimeter...
    2. calculate value of resistances...
    ...
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    Closed: Re: Beginner Question of the Electronic Chip

    yup u will require a PIC programmer to read the program in the microcontroller....BUT that will be in hex format...and it would be very troublesome if you want to decode and understand its algorithm...
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    Closed: Re: Buffer from a CURRENT FEEDBACK AMPLIFIER

    Sine wave is 4Vpp with a frequency of 1MHz.....

    I have LM7171(220MHz) and this CFB Opamp(2GHz)....

    so what should I use to make a peak detector ???
    and please suggest me a circuit that can...
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    Closed: Re: Buffer from a CURRENT FEEDBACK AMPLIFIER

    thanks for helping.....can u please tell me how to make a peak detector with this opamp (for detecting sin wave peak)....
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    Closed: Buffer from a CURRENT FEEDBACK AMPLIFIER

    hey guys....

    I want to make a voltage buffer... i.e. a unity gain amplifier from a CURRENT FEEDBACK AMPLIFIER.....(http://www.ti.com/product/ths3202)

    Please help....
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    [SOLVED]Closed: Re: Learn embedded system design

    ec_nisarg is gud in saying that start with basics and with simple microcontoller....

    and if u ask about embedded systems and microcontroller.....in my opinion MAZADI is the best book....it comes...
  20. Closed: Re: Hello i want to start pic programming with Hitech c can any one help me

    you can always take a comfortable path.....but if you really want to learn a thing just go by the harsh path....
    mplab & hitechc & micro datasheet will do the magic...
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    Closed: Re: Timer 2 Interrupt with 10 MHz

    ok you also have a problem with max count.....

    so u have three options...
    1. decrease the crystal frequency...
    2. call another timer on first timers interrupt.. (i.e use two 8 bit timers)
    3....
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    Closed: Re: Timer 2 Interrupt with 10 MHz

    u can check that by changing the status of an output pin(and resetting timer value on every interrupt) and checking its frequency on CRO or frequency counter.....n fine tune your values..
    ...
  23. Closed: Re: Hello i want to start pic programming with Hitech c can any one help me

    1. download mplabX
    2. download hitech compiler depending upon the microcontroller you want to use...(16f or 18f series), lite version is enough....
    3. start a new project in mplabX and select...
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    [SOLVED]Closed: Re: 8051 port 0 pullup resistors

    yes it will act like other ports after connecting pull up register.... :)
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    Closed: Re: High frequency peak detector....

    Okay...Now I have changed the OPAMP to a 1GHz opamp....OPA695 and things are looking a lot better now...But now there is a error in amplitude...and this is increasing with increase in input signal...
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