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Aluminium Pickup tester 3 the guts

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Aluminium stripped off..This little buzzer coil works as a inductive coil or a piezo pickup...(Nylon strings...impossible I hear you say!)Here's it demonstrated as a Piezo pickup, guess how this works?(Because I have sussed it completely and its so very simple, yet could revolutionise future pickup design)Farrady's law should give you a clue!!2 pickups for the price of one (er..50p)you could modify a standard tele pickup to do this, but as standard it wouldnt work...Any ideas?

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  • You know what?

    Sure!

    E-mail me at oilyfool@yahoo.com. And just fer grins, send one to The Phrygian Kid, too;I'll pay for it, and postage.
  • Well done you win
    Basically as it's on a spring plate
    The spring plate attaches to the body of a guitar
    The coil is gently moving with vibration.
    The magnet is stuck to the spring plate.
    Works like a piezo would.
    Hold down the spring and output stops.
    However as this also does inductance too
    You can get both sounds in one!
    So it's a double pickup!
    Yes faradays law
    But just wait till I fit a reverb spring !
    Inductance and reverb piezo in one!
    All for 50pence plus a magnet.
    And a stackable design for 1-6 strings
    Nice!!!
    Would you like one as a winning prize?

    Shall I send you one to play with ?
  • It's a magnetic cartridge, then, if there's no piezo. Real cheap buzzers are made this way, so that must be what you have, as you've said. Same principle as a turntable audio stylus cartridge, which has either a moving magnet and stationary coil, or vice versa, attached via an arm to the stylus, which tracks the grooves in a record, thus causing either the coil or magnet to move, generating a current, which travels down a cable to an amplifier, which amplifies the voltage swings. So your string vibration is transmitted through saddle / bridge / soundboard to either the magnet or the coil, causing the magnet to move past the coil ( which probably surrounds the magnet), or the coil to move past a stationary magnet, generating a current. That's why it works with nylon, non-ferrous core, or steel strings. Not really a new development in pickups, per se, but a really neat low cost application of a known and commercially applied phenomenon. Perfect application of Faraday's law.

    What'd I win? >:-E
  • Dat sounds great.  King Farraday.

  • No piezo crystals in this one
    Just a copper coil and a magnet!
    Think again, this principle was invented 1830's
    There is only one tiny difference to this pickup to a standard pup.
    Why does it work?
    Be..... might tell us the answer at the end of the day!?
  • Told ya the aluminum was unnecessary (well OK, I actually told The Kid, but hey...)! That's kewl, Bug!

     

    String vibrations cause the piezo crystals to slide past one another, generating a current, giving you the "piezo pickup" half; the same vibrations also cause the coil inside the buzzer to move through the Ni magnet's field, generating a current, giving you the "mag pickup" half. As opposed to the way a normal mag pup works, where a steel (ferrous material, thus can perturb a magnetic field) guitar string vibrates through the magnetic field of a stationary coil and stationary magnetic pole piece, pertuirbing the magnetic field, generating a current. Faraday's law. Inductance.

     

    Is what I'm thinking (and basically what I said on the first thread) , without having one in front of me to take it apart. Yep, simple. So what am I missing?

  • I've NO idea??!!

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