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  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?

    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.
  3. hamid.abbaszadeh

    how to enable hardware Multiplier in xmega?

    i want to enable hardware Multiplier with codevision.
  4. 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...
  5. 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
  6. 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.
  7. hamid.abbaszadeh

    Wave Form Generation Methods

    hi my friends i need to a wave form that some times was off. i want to make it without any code or isr .i need to some things like timer and event or awex.but i read all of them and dont find any things.my micro is xmega https://obrazki.elektroda.pl/3602742100_1446987806.png
  8. hamid.abbaszadeh

    FFT library for ATxmega

    salam my friends i need to a fft library for atxmega please help me
  9. hamid.abbaszadeh

    Fit with xmega, with band width 100k to 200k and sampling rate of ADC equal to 1Mhz

    fft with xmega with band with 100k to 200k and sampling rate of adc equal 1Mhz. hi my freinds fft with xmega with band with 100k to 200k and sampling rate of adc equal 1Mhz. is it posibble?
  10. hamid.abbaszadeh

    how to detect frequency changing with adc

    hi all i want to detect frequency between 140k and 145k.for example when signal is 140k turn on led1 and when its 141k turn on led2
  11. hamid.abbaszadeh

    reading from adc with 1mhz speed

    i am working on xmega128a1 with an external adc that has more than 1mhz speed. i want to read from adc and show data on lcd. but during to show it lose adc data. also i use dma and save data and then show them.but for save data with this speed need to big memory and idont want to use external...
  12. hamid.abbaszadeh

    ground loop problem between input and adc

    hi my friends i have problem with ground loop noise .what can i do? this is my circuit: https://obrazki.elektroda.pl/1348847700_1442637390.png
  13. hamid.abbaszadeh

    bandpass filter with bandwith 1khz and fr=140khz

    how can i made it.as i search about it for this filter we need to an opamp with big gain band .how can i use from digital filter with atmega128a1
  14. hamid.abbaszadeh

    Please recommand a UHF RFID reader chip to me

    Please recommand a UHF RFID reader chip to me. with application note Thanks.
  15. hamid.abbaszadeh

    Please recommand a UHF RFID reader chip to me.

    Please recommand a UHF RFID reader chip to me. with application note Thanks.
  16. hamid.abbaszadeh

    explain for me about dsss modulation

    HI ALL please explain for me about dsss modulation on the shape. expecting your coments
  17. hamid.abbaszadeh

    please explain for me about dsss modulation on the shape.

    HI ALL please explain for me about dsss modulation on the shape. expecting your coments
  18. hamid.abbaszadeh

    if i connect key then vout amplifire generated Voltage drop.

    hi all if i connect key then have a voltage drop in vout amplifire i want a vout without Voltage drop.help me expecting your comments https://images.elektroda.net/62_1338032044.jpg
  19. hamid.abbaszadeh

    whats channels in midi file?

    hi all whats channels in midi file? whats diffrence between channel 1 vs channel 5? expecting your comments
  20. hamid.abbaszadeh

    i want to use a circuit or device instead of transformer

    hi all i want to use a circuit or device istead of transformer in follow: help me

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