BOUNDARY-DISPLACEMENT MAGNETIC RECORDING DELAY LINE (Jan, 1953)

WANT IT LATER?
You can delay that signal with an
ERA BOUNDARY-DISPLACEMENT MAGNETIC RECORDING DELAY LINE

FREQUENCY RANGE—any five-octave band between 5 cps and 30,000cps, with appropriate drum speed.

DELAY—up to 1000 wavelengths of information storage per channel; 200-second delay maximum at 5 cps—proportionately less with increase in frequency.

NUMBER OF CHANNELS—1 to 16.

MAGNETIC DRUM NON-CONTACT RECORDING—eliminates wear of recording medium; permanent drum recording surface may be used indefinitely.
BOUNDARY-DISPLACEMENT TECHNIQUE—provides a high degree of amplitude linearity; minimizes modulation effects due to non-homogeneity of recording medium or slight variations in head-to-drum spacing.

YOUR DELAY-LINE REQUIREMENTS will receive prompt and careful study by our engineering specialists. Investigate the possible application of a custom-engineered ERA Magnetic Recording Delay Line to your signal-delay problem. Send your requirements to:

Engineering Research Associates, INC.
1902 West Minnehaha Avenue, Dept. S-2 , St. Paul 4, Minnesota

DIGITAL COMPUTERS . . . DATA-HANDLING SYSTEMS . . . MAGNETIC STORAGE SYSTEMS . . . INSTRUMENTS . . . ANALOG MAGNETIC RECORDING SYSTEMS . . .COMMUNICATIONS EQUIPMENT

2 comments
  1. jayessell says: July 15, 20101:47 pm

    No contact?
    As in the read/write heads of modern hard drives?

  2. jayessell says: July 24, 201110:26 am

    I saw that as ‘characters per second’ but it’s ‘cycles per second’, now known as Hz.

Submit comment

You must be logged in to post a comment.