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  Ron "Oily" Sprague January 25, 2012 at 12:40pm

  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.
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  BUGGY (C) January 25, 2012 at 12:23pm

  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 ?
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  Ron "Oily" Sprague January 25, 2012 at 11:22am

  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
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  Uncle John January 25, 2012 at 9:55am

  Dat sounds great.  King Farraday.
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  BUGGY (C) January 25, 2012 at 3:07am

  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!?
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  Ron "Oily" Sprague January 24, 2012 at 11:31pm

  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?
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  bemuzic January 24, 2012 at 7:04pm

  I've NO idea??!!