NO128636B - - Google Patents

Download PDF

Info

Publication number
NO128636B
NO128636B NO388369A NO388369A NO128636B NO 128636 B NO128636 B NO 128636B NO 388369 A NO388369 A NO 388369A NO 388369 A NO388369 A NO 388369A NO 128636 B NO128636 B NO 128636B
Authority
NO
Norway
Prior art keywords
input
output
couplers
port
phase
Prior art date
Application number
NO388369A
Other languages
English (en)
Norwegian (no)
Inventor
K Baker
K Dews
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of NO128636B publication Critical patent/NO128636B/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D13/00—Circuits for comparing the phase or frequency of two mutually-independent oscillations

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manipulation Of Pulses (AREA)
  • Measuring Phase Differences (AREA)
  • Networks Using Active Elements (AREA)
NO388369A 1968-09-30 1969-09-30 NO128636B (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4625768A GB1236829A (en) 1968-09-30 1968-09-30 Improvements in or relating to phase comparators

Publications (1)

Publication Number Publication Date
NO128636B true NO128636B (xx) 1973-12-17

Family

ID=10440494

Family Applications (1)

Application Number Title Priority Date Filing Date
NO388369A NO128636B (xx) 1968-09-30 1969-09-30

Country Status (6)

Country Link
CH (1) CH510882A (xx)
DE (1) DE1949402A1 (xx)
GB (1) GB1236829A (xx)
NL (1) NL6914793A (xx)
NO (1) NO128636B (xx)
SE (1) SE345324B (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888558A (en) * 1988-10-26 1989-12-19 Hewlett-Packard Company Phase detector for amplitude modulated radio frequency signals containing a low frequency waveform

Also Published As

Publication number Publication date
CH510882A (fr) 1971-07-31
SE345324B (xx) 1972-05-23
NL6914793A (xx) 1970-04-01
DE1949402A1 (de) 1970-04-23
GB1236829A (en) 1971-06-23

Similar Documents

Publication Publication Date Title
US8659862B2 (en) Directional fault location and isolation system
CN102508116B (zh) 基于电流平衡原理的智能变电站同杆双回线路选相方法
GB1272262A (en) Detecting faults in electrical transmission lines
US4864453A (en) Protective relay with selective phase selection for double lines
CN107431350B (zh) 输电线的行波保护
GB1392482A (en) Method and apparatus for checking metallic objects
NO128636B (xx)
GB1531430A (en) Segregated phase comparing relays
US5960372A (en) Method of monitoring electrical wear on selector switch disconnectors in a high voltage station
CN110261720A (zh) 配电网接地故障的单相接地判别方法及装置
CN207123588U (zh) 三相异步电动机绕组首尾头测试仪
JPH08233895A (ja) 送電線事故点標定装置
JP3342754B2 (ja) 高圧配電系統の断線検出装置
CN110531237A (zh) 一种二次回路绝缘检测装置
CN205911438U (zh) 一种用于天线测试的馈电电路
JPS63221266A (ja) ３端子送電系統における故障点標定方式
CN205786955U (zh) 电动机转向及ct极性调试设备
JPS6298273A (ja) 送電系の故障点標定方式
RU2037246C1 (ru) Способ определения поврежденных фаз и зоны повреждения линии электропередачи
WO2022092726A1 (ko) 전력비트 신호를 이용한 회선 판별 시스템 및 방법
SU1269058A1 (ru) Устройство дл вы влени несимметричных режимов работы трехфазной электрической сети
CN110391658A (zh) 一种配电变压器户相关系辨识装置、系统及方法
RU2006124C1 (ru) Способ определения поврежденных фаз и вида повреждения линии электропередачи
CN106033893A (zh) 确定逆变站受交流枢纽站影响的风险度的方法
Mathis Some properties of image circles