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Recent content by hamid.abbaszadeh

  1. hamid.abbaszadeh

    how to put a 30khz 12vpp on 220 ac?

    hi all i generated a pulse with 30khz and 12 volt pick to peak and i want to put it on main ac 220 volt. i dont have any idea for safety my circuit.what can i do?
  2. hamid.abbaszadeh

    relation between micro frequancy and calculate fft time?

    i konw DSPs are optimize .but i have seen some project that use pic18f with my speed.as i searched for best performance with low speed micro that has hardware multipelier , u have to write assembly code not C or sth else.for floating point u need more speed because micro has special algorithm to...
  3. hamid.abbaszadeh

    relation between micro frequancy and calculate fft time?

    hi all i want to find relation between micro frequancy and calculate fft time for choosing best micro for varities of fft.for example if i have a sampling rate 1Mhz with 256 lenght of sample.what speed is optimize for choosing micro controller.? i need to some formula.
  4. hamid.abbaszadeh

    how to enable hardware Multiplier in xmega?

    u r right tnx
  5. hamid.abbaszadeh

    guess my algorithm (fft algorithm or sth else)?

    hi fvm i read its datasheet and know it has a hardware multiplier .now can it perform the FFT in real time?or not?
  6. hamid.abbaszadeh

    guess my algorithm (fft algorithm or sth else)?

    i know fft specification but i want to know that its posibble with this 8bit micro with this speed or not?
  7. hamid.abbaszadeh

    how to enable hardware Multiplier in xmega?

    i want to enable hardware Multiplier with codevision.
  8. hamid.abbaszadeh

    guess my algorithm (fft algorithm or sth else)?

    hi guys i have a black box that its output is like fft algorithm.but im absolutly confused because it use a 8bit pic microcontroller(pic18f252)with this specifications: sampling pulse is 1Mhz numbers of data is 256 as i think for this fft u need to a fast micro for lossless data.????? i think it...
  9. hamid.abbaszadeh

    compression algorithm code for hex array data?

    my friend i asked from u not web link.as i said first of all i have to know algorithm then code. anyway i got it with youtube. tanks for ur time. i like rio
  10. hamid.abbaszadeh

    compression algorithm code for hex array data?

    first of all i want to know that algorithm .i dont need to c code .i try to know it but i couldnt.can u explain it step by step?
  11. hamid.abbaszadeh

    compression algorithm code for hex array data?

    ok i heard about that.but i cant underestand it. can u explain it on for example an array with 20 byte
  12. hamid.abbaszadeh

    compression algorithm code for hex array data?

    compression algorithm code for hex array data? i have 500kbyte data. i want to decrease it to 50kb then send it and after Receive data decoding that without lost data .is it possible? i need to c code for my algorithm. please help me
  13. hamid.abbaszadeh

    trig an event in xmega

    hi im using event system in xmega. i want to config an event that trig with timer flag and in stay in high and with another event it change state.
  14. hamid.abbaszadeh

    Wave Form Generation Methods

    come on man i know that but my problem is another thing . i want to off it in some times without use isr or code i want to make it with sth like event or awex unit :wink:
  15. hamid.abbaszadeh

    Wave Form Generation Methods

    hi my friend im sorrry its a pulse with freq=1Mhz
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