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GB1287091A - Improvements in or relating to electrical noise generators - Google Patents

Improvements in or relating to electrical noise generators

Info

Publication number
GB1287091A
GB1287091A GB2491859A GB2491859A GB1287091A GB 1287091 A GB1287091 A GB 1287091A GB 2491859 A GB2491859 A GB 2491859A GB 2491859 A GB2491859 A GB 2491859A GB 1287091 A GB1287091 A GB 1287091A
Authority
GB
United Kingdom
Prior art keywords
diode
anode
impedance
relating
magnetic field
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2491859A
Inventor
Percy John Fish
Terence William Chandler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GE Healthcare UK Ltd
Plessey Co Ltd
Original Assignee
GE Healthcare UK Ltd
Plessey Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GE Healthcare UK Ltd, Plessey Co Ltd filed Critical GE Healthcare UK Ltd
Priority to GB2491859A priority Critical patent/GB1287091A/en
Publication of GB1287091A publication Critical patent/GB1287091A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B29/00—Generation of noise currents and voltages

Landscapes

  • Electron Tubes For Measurement (AREA)

Abstract

1287091 Random noise generators PLESSEY CO Ltd 27 June 1960 [20 July 1959] 24918/59 Heading H3B [Also in Division H1] A wide-band noise generator comprises a simple thermionic diode which is combined with means for producing an intense magnetic field perpendicular to the electric field existing between the anode and cathode of the diode, the noise output being developed across an impedance in the anode circuit of the diode. The impedance is preferably an ohmic resistance but may include an inductance to compensate for the anode capacitance of the valve. In an example the diode is operated at a current of 27 milliamperes in a magnetic field of 1350 gauss. (For Figures see next column.)
GB2491859A 1959-07-20 1959-07-20 Improvements in or relating to electrical noise generators Expired GB1287091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2491859A GB1287091A (en) 1959-07-20 1959-07-20 Improvements in or relating to electrical noise generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2491859A GB1287091A (en) 1959-07-20 1959-07-20 Improvements in or relating to electrical noise generators

Publications (1)

Publication Number Publication Date
GB1287091A true GB1287091A (en) 1972-08-31

Family

ID=10219319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2491859A Expired GB1287091A (en) 1959-07-20 1959-07-20 Improvements in or relating to electrical noise generators

Country Status (1)

Country Link
GB (1) GB1287091A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213314A (en) * 1987-12-05 1989-08-09 English Electric Valve Co Ltd Gas discharge devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213314A (en) * 1987-12-05 1989-08-09 English Electric Valve Co Ltd Gas discharge devices
US4954748A (en) * 1987-12-05 1990-09-04 Eev Limited Thyratron gas discharge device with magnetic field for improved ionization
GB2213314B (en) * 1987-12-05 1992-02-12 English Electric Valve Co Ltd Thyratrons

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees