GB2312798B - Protection circuit for radio frequency instruments - Google Patents

Protection circuit for radio frequency instruments

Info

Publication number
GB2312798B
GB2312798B GB9714400A GB9714400A GB2312798B GB 2312798 B GB2312798 B GB 2312798B GB 9714400 A GB9714400 A GB 9714400A GB 9714400 A GB9714400 A GB 9714400A GB 2312798 B GB2312798 B GB 2312798B
Authority
GB
United Kingdom
Prior art keywords
radio frequency
protection circuit
frequency instruments
instruments
protection
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 - Fee Related
Application number
GB9714400A
Other versions
GB2312798A (en
GB9714400D0 (en
Inventor
Roger R Graeber
Grant D Marr
Darrell H Richardson
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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
Priority claimed from US08/609,151 external-priority patent/US5684441A/en
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Priority to GB9704114A priority Critical patent/GB2312558B/en
Priority claimed from GB9704114A external-priority patent/GB2312558B/en
Publication of GB9714400D0 publication Critical patent/GB9714400D0/en
Publication of GB2312798A publication Critical patent/GB2312798A/en
Application granted granted Critical
Publication of GB2312798B publication Critical patent/GB2312798B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/003—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to reversal of power transmission direction
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0066—Constructional details of transient suppressor

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Waveguide Connection Structure (AREA)
GB9714400A 1996-02-29 1997-02-27 Protection circuit for radio frequency instruments Expired - Fee Related GB2312798B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9704114A GB2312558B (en) 1996-02-29 1997-02-27 Protection arrangement for high frequency instruments

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/609,151 US5684441A (en) 1996-02-29 1996-02-29 Reverse power protection circuit and relay
GB9704114A GB2312558B (en) 1996-02-29 1997-02-27 Protection arrangement for high frequency instruments

Publications (3)

Publication Number Publication Date
GB9714400D0 GB9714400D0 (en) 1997-09-10
GB2312798A GB2312798A (en) 1997-11-05
GB2312798B true GB2312798B (en) 1999-02-24

Family

ID=26311074

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9714400A Expired - Fee Related GB2312798B (en) 1996-02-29 1997-02-27 Protection circuit for radio frequency instruments

Country Status (1)

Country Link
GB (1) GB2312798B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6366766B1 (en) * 2000-05-12 2002-04-02 Tektronix, Inc. Input protection circuit for a radio frequency
CN109104177B (en) * 2018-09-13 2022-02-01 浙江诺益科技有限公司 Radio frequency change-over switch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893009A (en) * 1974-01-16 1975-07-01 Westinghouse Electric Corp Reverse power flow relay
US4218719A (en) * 1973-12-26 1980-08-19 General Electric Company Reverse power flow detector and control circuit
US4698718A (en) * 1985-11-26 1987-10-06 Westinghouse Electric Corp. Electronic reverse power relay
GB2217542A (en) * 1988-04-12 1989-10-25 Marconi Instruments Ltd Attenuator
US5258731A (en) * 1992-10-15 1993-11-02 Hewlett-Packard Company Coaxial reverse power protection relay

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4218719A (en) * 1973-12-26 1980-08-19 General Electric Company Reverse power flow detector and control circuit
US3893009A (en) * 1974-01-16 1975-07-01 Westinghouse Electric Corp Reverse power flow relay
US4698718A (en) * 1985-11-26 1987-10-06 Westinghouse Electric Corp. Electronic reverse power relay
GB2217542A (en) * 1988-04-12 1989-10-25 Marconi Instruments Ltd Attenuator
US5258731A (en) * 1992-10-15 1993-11-02 Hewlett-Packard Company Coaxial reverse power protection relay

Also Published As

Publication number Publication date
GB2312798A (en) 1997-11-05
GB9714400D0 (en) 1997-09-10

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070227