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Magnetic-Recording-Head Selection Switch

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A switch for selecting one out of 100 magnetic recording heads for reading or writing is described. The recording heads are arranged in a 10 by 10 matrix and the switching is accomplished by semiconductor devices. The problem of obtaining suitably fast current rise time during writing is discussed, and the problem of crosstalk from unselected recording heads during reading is analyzed. Experimental results illustrate the performance of the switch.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

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IBM Journal of Research and Development  (Volume:2 ,  Issue: 1 )