Browsing Project Whirlwind Reports by Creator "Childress, J. D."

Now showing items 1-3 of 3

    • Core Drivers - Model V and Model VI Applications, Limitations, and Modifications 

      Childress, J. D. (Lincoln Laboratory - Division 6, 1954-04-01)
      (This memorandum supersedes Engineering Note E-523.¹) The Model V and Model VI Core Drivers are standard test units which generate rectangular wave current pulses of variable amplitude, rise time, and duration. Model V ...

    • Memory core heating by switching at high frequencies 

      Childress, J. D. (Lincoln Laboratory - Division 6, 1956-01-31)
      The heating of a memory core caused by high frequency switching has been studied experimentally. For a switching frequency of 4OO kilocycles (the maximum frequency possible in a coincident-current two-to-one selection ...

    • The noise problem in the coincident-current memory matrix 

      Childress, J. D. (Lincoln Laboratory - Division 6, 1956-02-13)
      Magnetic ferrites which have square hysteresis loops are being used as memory elements in high-speed digital computers. The limiting factor in memory reliability is the noise generated by the magnetic cores which are ...