On the process of flux reversal in multiaperture ferrite cores

Toroidal magnetic cores using ferrite materials have been applied extensively as 2-state logic and memory devices.1¿4 For more complex logical operation, multiaperture ferrite cores have been used.5¿8 In most of the studies of flux reversal phenomena in these cores only two final flux states have been considered, representing either of the two saturated states of the core or a leg of the core. Multiaperture cores are also capable of continuous modulation of a-c power. An example is the transfluxor, 9¿11 a 2-aperture core, in which the magnitude of the output is controlled by a transient setting pulse applied to its control winding. This device is able to operate at a continuously-controllable level because the amount of magnetic flux available about one aperture for the transfer of power can be controlled by the particular magnetic state established about the other aperture.