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  1. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    so I have the caps to make the 16000Hz and resistors and the TL074's the LM3914's Still need protoboard and the caps for the 45Hz to 7000Hz one I can make the Pre-Amp though and need to buy the schottky diodes still, and would like to know the best one for my purposes (envelope detectors) also...
  2. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    also my LM3914's have come today!! happy days
  3. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    I have a new thread you might like to help with!!
  4. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Nice one matey, can you suggest the best diode to use please?? thank you!
  5. Maglatron

    Balancing act RLC circuit

    looks good to me!! 150watts and 2.75amps, will check actual numbers later today!! ps I wear rubber gloves, had the resistor the wrong way around current was showing negative flipped it 180degree how do I put in a 20watt load??
  6. Maglatron

    Balancing act RLC circuit

    Hi there, I want to make a circuit and have an analogy if the capacitor bank is a bucket, and charge is the water filling the bucket and is acumalating charge, and the resistor is a hole in the bottom of the bucket and the buckets being filled by a tap of intermitant flow and if the hole is big...
  7. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    Could you suggest the schottky diode with a low voltage drop please? so in the e12 series of resistor I can choose between 150k and 180k the value I want is 165k that is perfect, its fine I can use 150k+15k
  8. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    ok so do you know the schottky diode with the lowest voltage drop rating in LTspice Nice wiki by the way!
  9. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    so do I aim for high voltage drop or low
  10. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    high voltage drop seems to work better! is the 45 breakdown voltage what you are talking about
  11. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    cool as,and the fastest diode in spice??
  12. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    so like this! also can you help me edit the amp so to use the full 2.4volts ie 6v to 8.4v please what is the fastest schottky diode in the program?
  13. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    it now tops out at 6.3volts and after the pre-amp, and then after the amplifier it tops out at 7.3 volts can you help me edit the amp so to use the full 2.4volts ie 6v to 8.4v please
  14. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    in real life I'd swap this out for the mic?
  15. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    ok it's working well now thanks I just need to make another 15 filters
  16. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    so now its centered about 9v and not 6(I want it centred about 6v
  17. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    correct? this is the output so I think I have it wrong again this is the wave output
  18. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    what does this mean
  19. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    this is wrong, how would you do it?
  20. Maglatron

    Sallen Key Low Pass Filter, bandpass filter

    or is it before the pre-amp and after the voltage source? right now it goes up to about 750mV
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