On Wed, 2008-03-12 at 23:23 +0000, Tony Duell wrote:
The only thing is, I've never seen one with a
polarity marking (often
they pnly fit the PCB one way round), and they're normally larger than
the comopneent you show.
I'm surprised at that - they crop up in monitors a lot, usually where
they linearise (or non-linearise) scan waveforms.
The magnet gives the coil slightly different properties depending on
which way round the current flows.
Gordon