If used independently of other circuit components, as in security applications, the effective length-to-diameter ratio (related to the permeance coefficient) must be great enough to cause the magnet to work above the knee in its second quadrant demagnetization curve.
Haddii loo isticmaalo si ka madax banaan qaybaha kale ee wareegga, sida codsiyada amniga, dhererka wax ku oolka ah ee cabirkiisu yahay dhexroor (oo la xiriira iskuxirka labada dhinac) waa inuu ahaadaa mid aad u weyn oo keenaya magnetku inuu ka shaqeeyo jilibka dusheeda wareega qalooca Quagnetization labaad.