sreid:
This particular relay is of the full crystal can variety and has both set and reset magnets. The two coils are on a common core and are attached to the inner (south) pole pieces of each magnet. A moving iron armature connects the outer (north) pole piece of the "set" magnet to the inner...
EdStainless and MagMike:
The ALNICO 8HC magnets I am concerned with have an area of 2 cm^2 and a thickness of 1/16 inch. The Hc value for a fully saturated magnet is 1800 Oersteds with a Br of 7.6 kG. The magnets operate from approximately zero flux to approximately the maximum energy point and...
sreid:
Unfortunately the device (a mag latch relay) already has the ALNICO 8HC magnets in the basic design. It is an old design dating at least 50 years but still being manufactured by the buckets full.
Mike:
Thanks for the input. Since I am new to working with permanent magnets I had thought, based on what information I could find, that the recoil permeability was basically a straight line recoiling with a slope equal to the recoil permeability from the lowest point reached on the...
Mike: I am using ALNICO 8HC down to approximately zero flux and recoiling from there. This magnet us used in a latching electromechanical relay and I am attempting to model the magnetic circuit which makes it necessary to have a fairly good estimate of the recoil permeability. I have been...
