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Comment by Ron "Oily" Sprague on January 25, 2012 at 6:40am

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.

Comment by BUGGY (C) on January 25, 2012 at 6:23am

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 ?

Comment by Ron "Oily" Sprague on January 25, 2012 at 5:22am

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

Comment by Uncle John on January 25, 2012 at 3:55am

Dat sounds great.  King Farraday.

Comment by BUGGY (C) on January 24, 2012 at 9:07pm

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!?

Comment by Ron "Oily" Sprague on January 24, 2012 at 5:31pm

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?

Comment by bemuzic on January 24, 2012 at 1:04pm

I've NO idea??!!