IL43889A - System for evaluating ac potential - Google Patents

System for evaluating ac potential

Info

Publication number
IL43889A
IL43889A IL43889A IL4388973A IL43889A IL 43889 A IL43889 A IL 43889A IL 43889 A IL43889 A IL 43889A IL 4388973 A IL4388973 A IL 4388973A IL 43889 A IL43889 A IL 43889A
Authority
IL
Israel
Prior art keywords
voltage
voltages
frequency
circuits
level
Prior art date
Application number
IL43889A
Other languages
English (en)
Other versions
IL43889A0 (en
Original Assignee
Siemens Ag
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 DE19722264031 external-priority patent/DE2264031C3/de
Application filed by Siemens Ag filed Critical Siemens Ag
Publication of IL43889A0 publication Critical patent/IL43889A0/xx
Publication of IL43889A publication Critical patent/IL43889A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/10—Control of transmission; Equalising by pilot signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Geophysics And Detection Of Objects (AREA)
IL43889A 1972-12-29 1973-12-21 System for evaluating ac potential IL43889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722264031 DE2264031C3 (de) 1972-12-29 Verfahren zur frequenz- und pegelmäßigen Auswertung einer Pilotspannung

Publications (2)

Publication Number Publication Date
IL43889A0 IL43889A0 (en) 1974-03-14
IL43889A true IL43889A (en) 1977-03-31

Family

ID=5865758

Family Applications (1)

Application Number Title Priority Date Filing Date
IL43889A IL43889A (en) 1972-12-29 1973-12-21 System for evaluating ac potential

Country Status (8)

Country Link
JP (1) JPS4999208A (it)
BE (1) BE809260A (it)
FR (1) FR2212550B1 (it)
GB (1) GB1451816A (it)
IL (1) IL43889A (it)
IT (1) IT1000761B (it)
NL (1) NL166830C (it)
SE (1) SE397412B (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610540A (en) * 1982-07-06 1986-09-09 General Electric Company Frequency burst analyzer
HUP0402132A2 (en) * 2004-10-20 2006-07-28 Laszlo Csanyi Multi function circuit containing qcan resonat members for suitable supplying adresses and data to the adress and data inputs of the digital and analogous devices from a signal source characterised by frequency

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL263599A (it) * 1960-04-13
US3462547A (en) * 1966-09-06 1969-08-19 Stanford Research Inst Data processing system for signals obtained from a video scanner
DE1512628A1 (de) * 1967-04-24 1969-04-24 Verbundnetz Mitte Veb Mitgekoppelter Transistorverstaerker fuer Grenzwertschaltung
US3555290A (en) * 1969-05-29 1971-01-12 Walter Ellermeyer Second-highest redundant voltage selector
US3619791A (en) * 1969-09-23 1971-11-09 Bendix Corp Intermediate amplitude signal selector

Also Published As

Publication number Publication date
BE809260A (fr) 1974-06-28
GB1451816A (en) 1976-10-06
FR2212550B1 (it) 1979-04-20
IT1000761B (it) 1976-04-10
DE2264031A1 (de) 1974-07-18
FR2212550A1 (it) 1974-07-26
NL7317691A (it) 1974-07-02
SE397412B (sv) 1977-10-31
JPS4999208A (it) 1974-09-19
DE2264031B2 (de) 1976-08-19
NL166830C (nl) 1981-09-15
IL43889A0 (en) 1974-03-14
NL166830B (nl) 1981-04-15

Similar Documents

Publication Publication Date Title
US1663086A (en) Means for indicating frequency changes
US3731203A (en) Monitoring circuit and system for detecting signals in a signal transmission system
US3437937A (en) Digital squelch system
US3437941A (en) Wide band frequency discriminator
US2773181A (en) Frequency discriminator system
US2724049A (en) High frequency communication system
US2414795A (en) Ringing control arrangement for two-way carrier telephone terminals
IL43889A (en) System for evaluating ac potential
WO1983004354A1 (en) Meter drive circuit
US4507578A (en) Frequency discriminating circuit
US4355407A (en) Device for disconnecting the receiver in case of a small signal-to-noise ratio for a digital-modulated radio system
US3372335A (en) Two channel, frequency drift correcting, remote-controlled supervisory system
US3268816A (en) Adaptive communications system incorporating receiver selection of communications channel
US3745465A (en) Detector of false vor direction indication
US3924224A (en) Meter reading system
US3022471A (en) Self-tuning filter circuits for increasing ratio of narrow band variable frequency signal to broad band noise
US2354510A (en) Automatic frequency control
US3121871A (en) Direction finding system
US2540512A (en) Interference reducing impulse amplitude detector
US2527523A (en) Frequency control system
US4034296A (en) Omni-frequency pilot system
CA1197573A (en) Analog signal comparator using digital circuitry
US2477962A (en) Frequency shift tuning indicator system
US2271964A (en) Tuning indicator for carrier-signal receivers
US2414440A (en) Voice frequency ringer