BE612560A - Circuit for indicating small amplitude deviations of an AC voltage from a predetermined nominal value - Google Patents

Circuit for indicating small amplitude deviations of an AC voltage from a predetermined nominal value

Info

Publication number
BE612560A
BE612560A BE612560A BE612560A BE612560A BE 612560 A BE612560 A BE 612560A BE 612560 A BE612560 A BE 612560A BE 612560 A BE612560 A BE 612560A BE 612560 A BE612560 A BE 612560A
Authority
BE
Belgium
Prior art keywords
voltage
circuit
nominal value
small amplitude
predetermined nominal
Prior art date
Application number
BE612560A
Other languages
Dutch (nl)
Inventor
E Jung
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of BE612560A publication Critical patent/BE612560A/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10—Measuring sum, difference or ratio
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1203—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier being a single transistor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1296—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the feedback circuit comprising a transformer

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Current Or Voltage (AREA)
BE612560A 1961-01-13 1962-01-12 Circuit for indicating small amplitude deviations of an AC voltage from a predetermined nominal value BE612560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST17342A DE1133822B (en) 1961-01-13 1961-01-13 Circuit arrangement for displaying even slight deviations in the amplitude of an alternating voltage from a predetermined nominal value

Publications (1)

Publication Number Publication Date
BE612560A true BE612560A (en) 1962-07-12

Family

ID=7457438

Family Applications (1)

Application Number Title Priority Date Filing Date
BE612560A BE612560A (en) 1961-01-13 1962-01-12 Circuit for indicating small amplitude deviations of an AC voltage from a predetermined nominal value

Country Status (3)

Country Link
BE (1) BE612560A (en)
DE (1) DE1133822B (en)
NL (1) NL273437A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1762390B1 (en) * 1968-05-13 1970-05-06 Standard Elek K Lorenz Ag Circuit arrangement for monitoring a switching device between two communication devices, in particular between two carrier current generators
DE2262939C3 (en) * 1972-12-22 1981-04-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit for evaluating pulse-modulated alternating voltages, in particular pilot voltages in carrier frequency systems

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938624C (en) * 1952-04-10 1956-02-02 Siemens Ag Circuit arrangement for displaying when a threshold value has been exceeded, preferably for displaying brief voltage pulses, in particular in telecommunications systems

Also Published As

Publication number Publication date
NL273437A (en)
DE1133822B (en) 1962-07-26

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