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Recent content by Wicky21

  1. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    @BradtheRad, Yes that's true. Noise also gets amplified. I order Automatic gain control mic and amp. refer to below datasheet. Seems like its pretty handy for my project. https://cdn-learn.adafruit.com/downloads/pdf/adafruit-agc-electret-microphone-amplifier-max9814.pdf Also below pdf explain...
  2. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Hi, What your telling was true. earlier i thought to record them on a sd card. Later fft will be done. when pll detects presence of mosquito it will trigger micro controller and start to record it on sd card. Its point less right? Also inside my Micro-controller dsp filtering also happens
  3. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Hello, Working 24hr per day make micro controller(Whole time fft has to be done) over heat. Because of that reason only i'm using PLL to trigger micro controller when it captures signals inside pass band. Here still i haven't checked. Im still at the stage of selecting values for resistor and...
  4. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Hello filip.amator, Actually im trying to detect mosquito frequencies. Simply i need to identify the presence of a mosquito. So i already identified the mosquitoes fundamental frequency range(There's no exact value, different mosquito's has different fundamental frequencies. I identify the...
  5. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Hello Biran, Earlier i used LM567. But it didn't properly worked. Also i have seen some videos 567 decoder is not going to lock. It simply gives an output when it detects a certain frequency. Also most of the applications LM567 used for certain frequency. But in my case there's a pass band...
  6. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Ok crutschow. The what i selected values for R1,R2 and C1 maybe correct Upto this stage i only able to figure out below values But how about designing low pass filter values. R3,C2 ? What values should i select in my case. Also no need to use SF_OUT right? (Comparator 1 being using)
  7. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    From Adafruit AGC Electret Microphone Amplifier - MAX9814, Im going to pick signals in. Datasheet of microphone is attached below https://datasheets.maximintegrated.com/en/ds/MAX9814.pdf
  8. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Thanks alot for replying crutschow. Did you notice what i have attached datasheet is bit different. https://assets.nexperia.com/documents/data-sheet/HEF4046B.pdf Im really new to pll. What i have done is by go through datasheet and selected values. Still i didn't selected values of R3,C2...
  9. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Could you please check whether selected values are correct?
  10. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    Hello Brian. OK this is the purpose of the frequency range. Actually im trying to detect mosquito frequencies. Simply i need to identify the presence of a mosquito. So i already identified the mosquitoes fundamental frequency range(There's no exact value, different mosquito's has different...
  11. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    I haven't notice that. Are you sure 4046 is not a Analog PLL??? Because i thought by using microphone this can be lock. Now im bit confused
  12. W

    Design capturing range 350Hz-550Hz by using Hef4046b PLL

    I'm currently doing a project by using the HEF4046B pll. i'm new to this chip My requirement is to lock the PLL around 350Hz-550Hz. Simply my capturing range should be between 350Hz-550Hz. Since i'm new to this pll somebody help me to select R2,R1 and C1 values. Also to design low pass filter...
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