A note on the magnetostrictive ringing in core memory systems

The observed ringing voltages in core memory systems depend on the frequency and the width of the pulsed current inputs. The pulse-width dependence results in maxima and minima, and the frequency dependence also results in maxima and minima in the peak amplitude of the ringing voltages. These phenomena have been examined and analyzed by a superposition of waves excited by fields due to the rise time and the fall time of all pulsed current inputs. The results show that a proper choice of the current width can be helpful in canceling the ringing voltages in the core memory systems.