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Recent content by Abhishek K

  1. A

    IR object sensor design

    you can directly use a IR Tx-Rx pair...no 555 req in that case...power req might change thoug. but thats a lot more easier.. and works fine
  2. A

    the value of standar deviation AWGN

    additive= its the noise that we add to our signal , to account for the noises during its propagation, white= like white light has all colors, white noise is combination of noises of all frequencies. guassian= its pdf(probability density function )has guassian distribution[the shape on the right...
  3. A

    AC and DC Voltage and Current and Resistance Measuring Circuit

    For RMS value, use a squarer circuit, an integrator, and a square rooting circuit... the first and last can be made using multipliers
  4. A

    lookup table using vhdl:

    use case statement
  5. A

    AC and DC Voltage and Current and Resistance Measuring Circuit

    you can design it....but a dmm is way more costly if you are going to use microcntroller. DC voltage= use ADC(analog to digital converters.) AC voltage= use peak detector and then using microcontroller calculate the rms value .(Imax/ root(2)). ---------- Post added at 21:03 ---------- Previous...
  6. A

    Back propagation algorithm

    by the archi that you are describing , their should be two weight matrix 1)for between the input and the hidden layer 2)for between the output and the hidden layer ., each of order (3x3). how are you getting 6 weights???
  7. A

    C language to Assembly

    ALL THE COMPILERS DO THAT by definition. the specific compiler may vary depending on the target device... say, for example, asm51 compiles the code for 8051 microcontroller..
  8. A

    DAC Design ( binary weighted Capacitor)

    how many bits are there in your DAC?? i think the Vref depends on that.... the Vout=Value(digital) *Vref/(2^N) [for N bit DAC]
  9. A

    Back propagation algorithm

    let me get it clearly... you mean to say that you are getting three weight VECTORs say [Wx]for connections between the hidden layer and the output layer, ....classifying the data into three classes means you have three outputs of which only one is high at a time. right? it for each training...
  10. A

    matlab code for framing and windowing

    check with ramesh babu's book on DSP..framing and windowing is nicely given in it
  11. A

    Back propagation algorithm

    input the test signal to final updated weights, and check the output generated.....at the time of training do not use all the training pairs....some input-output pairs are kept for testing.... if the results are not correct means your network has memorized the patterns and need more training
  12. A

    microcontroller for beginner

    take a look at MAZIDI for 8051...very good to begin microcontroller programming...and the interfacing is also given nicely..
  13. A

    elevator system design and specifications using PIC16F877

    for speed, use PWM.....and direction means what?.... if the desired floor has number greater than the current floor...move the moter in one direction(say clockwise)..and if the desired floor number is less than current floor...move it in reverse direction... U can do this by subtracting i.e...
  14. A

    How to calculate Sine wave frequency using LPC2148

    hi there... U can set the software interrupt to be generated when the analog sine input value is zero... and increment the value of register on each interrupt , starting from 0...at the end of 1second the register value divided by 2 should give the frequency of sine wave , i guess
  15. A

    Request for Interfacing

    which fingerprint module are you interfacing...?? provide details
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