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GB2034990B - Phase sensitive product detector - Google Patents

Phase sensitive product detector

Info

Publication number
GB2034990B
GB2034990B GB7934921A GB7934921A GB2034990B GB 2034990 B GB2034990 B GB 2034990B GB 7934921 A GB7934921 A GB 7934921A GB 7934921 A GB7934921 A GB 7934921A GB 2034990 B GB2034990 B GB 2034990B
Authority
GB
United Kingdom
Prior art keywords
phase sensitive
sensitive product
product detector
detector
phase
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
GB7934921A
Other versions
GB2034990A (en
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.)
Trane US Inc
Original Assignee
American Standard Inc
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 US05/953,527 external-priority patent/US4188002A/en
Application filed by American Standard Inc filed Critical American Standard Inc
Publication of GB2034990A publication Critical patent/GB2034990A/en
Application granted granted Critical
Publication of GB2034990B publication Critical patent/GB2034990B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
    • G01R25/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller, or for passing one of the input signals as output signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L21/00—Station blocking between signal boxes in one yard
    • B61L21/06—Vehicle-on-line indication; Monitoring locking and release of the route

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
GB7934921A 1978-10-23 1979-10-09 Phase sensitive product detector Expired GB2034990B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US95352678A 1978-10-23 1978-10-23
US95352878A 1978-10-23 1978-10-23
US05/953,527 US4188002A (en) 1978-10-23 1978-10-23 Vital power varistor circuit for railroad signaling systems
AU58918/80A AU5891880A (en) 1978-10-23 1980-05-30 Vital power varistor circuit

Publications (2)

Publication Number Publication Date
GB2034990A GB2034990A (en) 1980-06-11
GB2034990B true GB2034990B (en) 1983-06-15

Family

ID=34222419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7934921A Expired GB2034990B (en) 1978-10-23 1979-10-09 Phase sensitive product detector

Country Status (1)

Country Link
GB (1) GB2034990B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19730259C1 (en) * 1997-07-09 1999-02-04 Siemens Ag Method and arrangement for testing a double sensor system
GB2482569B (en) * 2010-12-23 2013-05-08 Control And Display Systems Ltd Railway track circuit monitor
GB2512101A (en) * 2013-03-20 2014-09-24 Tube Lines Ltd Loop break detection and repair

Also Published As

Publication number Publication date
GB2034990A (en) 1980-06-11

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19951009