NDLI: Electron beam tube for analog-to-digital conversion

Content Provider	IEEE Xplore Digital Library
Author	Crowell, M.H. Sears, R.W.
Copyright Year	1960
Description	Author affiliation: Bell Telephone Laboratories, Inc., Murray Hill, New Jersey (Crowell, M.H.)
Abstract	A beam deflection tube is described which converts the amplitude of an input voltage into an eight digit binary output at sampling rates up to ten megacycles per second. The tube employs a ribbon beam with a line focus, which impinges on eight columns of apertures in a code plate. The line focus is oriented perpendicular to the columns of apertures and the beam is electrostatically deflected by the input signal in a direction parallel to them. These apertures are arranged so that the electrons penetrate the "digit columns" in a binary pattern which identifies the beam position. Output collector electrodes, one associated With each digit column, produce output currents in parallel, An output current of 50 microamperes per digit is obtained by the use of a single stage of secondary electron multiplication before final electron collection. The important tube design parameters are discussed with emphasis on deflection plate design for maximum performance with minimum aberrations.
Starting Page	64
Ending Page	64
File Size	40381
Page Count	1
File Format	PDF
DOI	10.1109/IEDM.1960.187188
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1960-10-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electron beams Electron tubes Analog-digital conversion Apertures Telephony Laboratories Sampling methods Voltage Electrodes
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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