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  1. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    ok this I can do, so how do you adjust the voltage divider so that its in the 10 to 20 millivolt range (after the preamp but before the amp)
  2. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Hello again! ok is it possible to make a low scale audio file in audacity? did you manage to download the LM3914 to your library and how did it go for you I have a ryzen 5000 5 does it run on yours??
  3. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I think this looks good!
  4. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    how do I change the pre-amp so it give about 0.5 of a volt less then it will work safely with the LM3914?
  5. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I'm going through the different schottky diodes RB706F 40 is by far the best so far
  6. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    how do I add these files to spice https://github.com/evenator/LTSpice-Libraries/blob/master/cmp/standard.dio
  7. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I took out the rariable resistor on the pre-amp and put a direct wire in its place this minimizes the gain I think but it still tops out at 9v which is larger than the desired 8.4v and havn't sussed the envelope detector yet! fixed it with a change of schottky diode!
  8. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    now it's not enveloping at all!! actually, it is, it is just really thick envelope how do you make this better?? before and after
  9. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    the envelope detector is showing this really thick line (it was thin before) can you help fix it
  10. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    ok thank you cheers
  11. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    can anyone solve the problem of the sim only running for 90ms, thanks
  12. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    what is wrong!!!!???????? the program doesn't seem to like the LM3914 or the LM3915 chips, why only 90ms!!! this is becoming a big problem! It's like it has a time limit that I can't seem to change!!
  13. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    so I made the LM3914 circuit and added it again and its gone back to how it was only showing 90ms worth
  14. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    yes ok so I took out the lm3914 and it's working properly again - beautiful so I have determined that there is a problem with the lm3914 circuit!! just removing the cascaded LM3914's and their circuitry set it back to normal!!
  15. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    the simulation black box with this circuit it take 2 mins to load and only shows 90ms, this black box!! simulating other circuits works fine!! it does it wherever you put the probe too
  16. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    its good I fixed it
  17. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Hello, I looked through the info but there is nothing about setting the time that the black box duration is for, I don't know how to set it so that it works again
  18. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Did you manage?!? also wav file is fine! I don't know whats wrong, please help
  19. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    can you solve the problem with the black box not going on for long enough and it takes extra long to load aswell! maybe something to do with this. I can't work it out!!! it's bugging me
  20. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    the middle one works fine the filters on the otherhand do not!!
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