GB661193A - Improvements relating to the protection of radar equipments - Google Patents

Improvements relating to the protection of radar equipments

Info

Publication number
GB661193A
GB661193A GB88949A GB88949A GB661193A GB 661193 A GB661193 A GB 661193A GB 88949 A GB88949 A GB 88949A GB 88949 A GB88949 A GB 88949A GB 661193 A GB661193 A GB 661193A
Authority
GB
United Kingdom
Prior art keywords
voltage
pulse
thermal relay
transformer
alternator
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
GB88949A
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.)
WILLIAM SIMM MELVILLE
British Thomson Houston Co Ltd
Original Assignee
WILLIAM SIMM MELVILLE
British Thomson Houston 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 WILLIAM SIMM MELVILLE, British Thomson Houston Co Ltd filed Critical WILLIAM SIMM MELVILLE
Priority to GB88949A priority Critical patent/GB661193A/en
Priority to FR1008336D priority patent/FR1008336A/en
Publication of GB661193A publication Critical patent/GB661193A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/034—Duplexers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/78—Generating a single train of pulses having a predetermined pattern, e.g. a predetermined number

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Power Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

661,193. Pulse circuits. BRITISH THOMSON-HOUSTON CO., Ltd., and MELVILLE, W. S. Jan. 11, 1950 [Jan. 12, 1949], No. 889/49. Class 40 (vi). A protective device for the pulse circuits of a radar equipment comprises a normally non- conductive discharge device which is connected in series with a thermal relay across the circuit conductors where an undefined abnormally high voltage may appear, the discharge tube conducting in the presence of such a voltage so that after an interval the contacts of the thermal relay operate to shut down that part of the equipment where the voltage originates. The Figure shows a protective circuit for a radar transmitter in which the voltage from an alternator A charges a pulse-forming network CL via a step-up transformer T1, T2, the network CL being periodically discharged through the pulse transformer T3, T4 by the triggered thyratron V1 to produce a high voltage pulse across the magnetron V2. If the voltage across the valve V1 or V2 exceeds the normal safe value, neon tubes S1 or S2 respectively will conduct the current of either flowing through the heater element E of the thermal relay TR will cause the contact Cr to open and block the connection between the alternator A and the input transformer T1, T2. At least one of the members of the contact Cr comprises a bi-metallic strip and the discharge tubes S1, S2 may be of the type described in Specification 582,995.
GB88949A 1949-01-12 1949-01-12 Improvements relating to the protection of radar equipments Expired GB661193A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB88949A GB661193A (en) 1949-01-12 1949-01-12 Improvements relating to the protection of radar equipments
FR1008336D FR1008336A (en) 1949-01-12 1950-01-12 Protection against overvoltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB88949A GB661193A (en) 1949-01-12 1949-01-12 Improvements relating to the protection of radar equipments

Publications (1)

Publication Number Publication Date
GB661193A true GB661193A (en) 1951-11-21

Family

ID=9712267

Family Applications (1)

Application Number Title Priority Date Filing Date
GB88949A Expired GB661193A (en) 1949-01-12 1949-01-12 Improvements relating to the protection of radar equipments

Country Status (2)

Country Link
FR (1) FR1008336A (en)
GB (1) GB661193A (en)

Also Published As

Publication number Publication date
FR1008336A (en) 1952-05-16

Similar Documents

Publication Publication Date Title
US2339750A (en) Time delay circuit
US2373134A (en) Signaling system
US2433254A (en) Electrical timing system
US2370727A (en) Time measuring system
US2393014A (en) Time delay circuit
GB661193A (en) Improvements relating to the protection of radar equipments
US2338218A (en) Time-measuring device
US2802954A (en) A. c. coupled gate circuits
US2097578A (en) Apparatus for recording steep wave front voltages of short duration
US2479274A (en) Timing circuit
GB1135532A (en) Voltage monitoring system
US2435258A (en) Telegraph signal impulse measuring device
US2104142A (en) Gas-filled tube circuits
US3386013A (en) Solid state timer for a two coil relay
US2904782A (en) Lighting system for alarm boxes
US2086683A (en) Gas tube circuits for measuring short-lived impulses
US2718601A (en) Pulse generator
US2056912A (en) Circuits for resetting gaseous discharge devices
US1898118A (en) Signaling system
US2121935A (en) Amplifying system
US2534856A (en) Cold cathode gas tube counting circuit
GB940017A (en) Electrical storage circuits
US3021476A (en) Testing circuit for circuit breakers
US2120972A (en) Converting system
US2567209A (en) Telephone metering system