[AMRadio] Class AB and B audio XFMRS


John Coleman ARS WA5BXO wa5bxo2005 at pctechref.com
Thu Mar 16 11:22:07 EST 2006


I love this stuff!

John, WA5BXO



-----Original Message-----Not in its entirety.

From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Bob Bruhns
Sent: Thursday, March 16, 2006 10:12 AM
To: Discussion of AM Radio
Subject: Re: [AMRadio] Class AB and B audio XFMRS

Magnetic hysteresis is a complicating factor.
When you apply a magnetic field to a magnetic
material, it is partially magnetized.  When you
saturate it, it is strongly magnetized.  When it
is magnetized, it opposes the application of a
reverse magnetic field, and it takes a certain
reverse applied field to overcome the residual
field in the material, and it takes a little more
reverse applied field to reverse the residual
field.  This causes a timing delay in the magnetic
transitions.  The amount of delay depends on the
applied signal level.







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