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  1. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    ok so please can you do an example in schematic picture, also how to cascade in bar graph mode please
  2. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    would you put -V to REF aswell?
  3. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Just went to play pool for a bit, now I'm going to get on with the designing 16 filters one more practical question will 16 bar graph type LED's fit on one of these, side by side
  4. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    along with -V
  5. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Sound as a pound!
  6. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I can use TL074CN for the pre-amplifiyer, the filters, the buffer circuit and the enveloping detector circuit how many buffer circuits would I need to use with 16 channels, do the LM3914 and the buffer use the same actual ground in the circuit and the signal from the enveloping detector circuit...
  7. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Is this all correct!?
  8. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    theoretically have I got it right?? does it matter that the stages are not in order
  9. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    theoretically have I got it right??
  10. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    is it possible to change your name on allaboutcircuits because I want to call myself Maglatron:)
  11. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    The internet has no problems downloading from this site though!
  12. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    so I think I've worked out where the four of the 100nF's go, they go the shortest route between 12v in and the REF virtual ground of the filters, now I need to know where to put the 10uF cap, but im thinking that it goes in parallel with the 100nF across the 12v and actual ground of the buffer...
  13. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I got my sister to sign up to allaboutcircuits for me and this site did not require email validation at all!
  14. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I can't even log into email sites, sign on to youtube, paypal, skype and have trouble accessing certain stuff, mainly helpful stuff lol, it's a pain in the neck!!
  15. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    yeah I'm in hosptal so the hospital internet restrictions are out of my control, I can't even download a VPN!
  16. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I am registered there, it's my internet it restricts certain sites or sometimes downloads
  17. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I know what they're for to mitigate dips (ripple) on the power lines
  18. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    My internet connection doesn't allow me to download the pdf files from allabout circuits, could you post them here please? cheers
  19. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Hey bertus, you're over there too!:)
  20. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    powerlines as in 12v and REF?? and where does the electrolytic go? or 12v and actual ground?
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