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Thread: 3-Knob Tube Driver Build.

  1. #21
    Quote Originally Posted by DrNomis_44 View Post
    No worries, take your time cause it is a bit hard to understand at first, I went through the same learning-process when I first started out in electronics.
    Yeah, it's pretty mind bending. My brother summed up my feelings perfectly at a gig a few months back - we were both pretty drunk and standing at the side of the stage and apropos of nothing he just kind of shrugged, shook his head and exclaimed 'but what even IS electro-magnetism?!?'
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  2. #22
    Mentor Marcel's Avatar
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    Quote Originally Posted by DrNomis_44 View Post
    So maybe increase the 220pF cap to maybe something like 1nF, or 2n2?
    Doubling the value should halve the frequency so 1nF might be a bit big, try a 680pF first and measure the frequency if you can.

  3. #23
    GAStronomist DrNomis_44's Avatar
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    Quote Originally Posted by JohnH View Post
    Yeah, it's pretty mind bending. My brother summed up my feelings perfectly at a gig a few months back - we were both pretty drunk and standing at the side of the stage and apropos of nothing he just kind of shrugged, shook his head and exclaimed 'but what even IS electro-magnetism?!?'

    Scientists have theorized about what Electro-Magnetism is, but personally I think we are barely scratching the surface with our current understanding.

  4. #24
    GAStronomist DrNomis_44's Avatar
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    Quote Originally Posted by Marcel View Post
    Doubling the value should halve the frequency so 1nF might be a bit big, try a 680pF first and measure the frequency if you can.

    Can do, I think I have at least one solderless breadboard lying around in the studio room in my new flat, I also have my old DSE 20Mhz Dual Trace Oscilloscope so I'll be able to make ballpark frequency measurements, definitely going to invest in a new Digital Scope later this year.

  5. #25
    Mentor Marcel's Avatar
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    Most of us drive cars and listen to music and go through life never knowing how the internal combustion motor works or what a planetary gear does or what intonation is or the fact that there is something called a 12AX7.... yet it doesn't stop the human race from enjoying those well written good music in our beautiful and fast cars...

    Use what you do know and make the whole world a better place for it...

  6. #26
    GAStronomist DrNomis_44's Avatar
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    I agree Marcel.

  7. #27
    GAStronomist Simon Barden's Avatar
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    Quote Originally Posted by DrNomis_44 View Post
    Scientists have theorized about what Electro-Magnetism is, but personally I think we are barely scratching the surface with our current understanding.
    Very good, Doc.

    Don't forget that as you increase the voltage, it becomes more dangerous to mess about with. You need to be sure that all your wires and components are suitably rated for that voltage. Each component in the multiplier might not have a large voltage across it, but the voltage with respect to ground is increasing with each step.

  8. #28
    Quote Originally Posted by Marcel View Post
    Most of us drive cars and listen to music and go through life never knowing how the internal combustion motor works or what a planetary gear does or what intonation is or the fact that there is something called a 12AX7.... yet it doesn't stop the human race from enjoying those well written good music in our beautiful and fast cars...

    Use what you do know and make the whole world a better place for it...
    An excellent sentiment
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  9. #29
    Overlord of Music WeirdBits's Avatar
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    Scott.

  10. #30
    Ha ha ha ha
    #001 (LP-1S) [finished - co-runner up Nov 2018 GOTM]
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    Junk shop acoustic refurbs (various)
    'The TGS Special'

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