FR2313812A2 - Recurring frequency signal selector - can handle, using transistorised switching, more than one signal train - Google Patents

Recurring frequency signal selector - can handle, using transistorised switching, more than one signal train

Info

Publication number
FR2313812A2
FR2313812A2 FR7517673A FR7517673A FR2313812A2 FR 2313812 A2 FR2313812 A2 FR 2313812A2 FR 7517673 A FR7517673 A FR 7517673A FR 7517673 A FR7517673 A FR 7517673A FR 2313812 A2 FR2313812 A2 FR 2313812A2
Authority
FR
France
Prior art keywords
frequency
switching
handle
selector
signals
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.)
Granted
Application number
FR7517673A
Other languages
French (fr)
Other versions
FR2313812B2 (en
Inventor
Jean Salmon
Patrick Marchand
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.)
Jeumont Schneider SA
Original Assignee
Jeumont Schneider SA
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 FR7209321A external-priority patent/FR2176266A5/fr
Application filed by Jeumont Schneider SA filed Critical Jeumont Schneider SA
Priority to FR7517673A priority Critical patent/FR2313812A2/en
Publication of FR2313812A2 publication Critical patent/FR2313812A2/en
Application granted granted Critical
Publication of FR2313812B2 publication Critical patent/FR2313812B2/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01R19/1658—AC voltage or recurrent signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)

Abstract

The selector has an intrinsic security for signals having some repetitive frequency range. The design is intended to operate over a range of signals having such frequency characteristics rather than the single recurrent frequency of the original design. The basic circuit has been modified such that the capacitor normally fed from a constant current source is now charged from a switching network handling several signal paths in parallel. Each such line has a resistance in series with the emitter - collector path of an auxiliary transistor. Switching is by pulsed voltages associated with the recurrence frequency, applied to the transistor bases.
FR7517673A 1972-03-17 1975-06-06 Recurring frequency signal selector - can handle, using transistorised switching, more than one signal train Granted FR2313812A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7517673A FR2313812A2 (en) 1972-03-17 1975-06-06 Recurring frequency signal selector - can handle, using transistorised switching, more than one signal train

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7209321A FR2176266A5 (en) 1972-03-17 1972-03-17
FR7517673A FR2313812A2 (en) 1972-03-17 1975-06-06 Recurring frequency signal selector - can handle, using transistorised switching, more than one signal train

Publications (2)

Publication Number Publication Date
FR2313812A2 true FR2313812A2 (en) 1976-12-31
FR2313812B2 FR2313812B2 (en) 1977-12-09

Family

ID=26216987

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7517673A Granted FR2313812A2 (en) 1972-03-17 1975-06-06 Recurring frequency signal selector - can handle, using transistorised switching, more than one signal train

Country Status (1)

Country Link
FR (1) FR2313812A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140626C1 (en) * 1980-03-18 1984-03-08 Jeumont-Schneider, 92811 Puteaux Circuit arrangement for the selection of an electrical alternating signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892891A (en) * 1955-11-02 1959-06-30 Bell Telephone Labor Inc Voice-operated gain adjusting device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892891A (en) * 1955-11-02 1959-06-30 Bell Telephone Labor Inc Voice-operated gain adjusting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3140626C1 (en) * 1980-03-18 1984-03-08 Jeumont-Schneider, 92811 Puteaux Circuit arrangement for the selection of an electrical alternating signal
US4488238A (en) * 1980-03-18 1984-12-11 Jeumont-Schneider Corporation Selection stage of the AC signal of greater amplitude between two signals of different frequencies

Also Published As

Publication number Publication date
FR2313812B2 (en) 1977-12-09

Similar Documents

Publication Publication Date Title
US3105197A (en) Selective sampling device utilizing coincident gating of source pulses with reinforce-reflected delay line pulses
CA1012240A (en) Circuit arrangement for generating a control signal for the field output stage in a television receiver
CA1003951A (en) Circuit arrangement for generating a control signal for the field output stage in a television receiver
GB806869A (en) Pulse coding system
FR2313812A2 (en) Recurring frequency signal selector - can handle, using transistorised switching, more than one signal train
GB813860A (en) Improvements in or relating to transistor circuits
GB1210393A (en) Automatic frequency control of oscillator
GB1273821A (en) Sequence switching circuit
GB1344009A (en) Electrical signal attenuators
GB711053A (en) Electronic switching systems
ES325779A1 (en) Installation of connection for the screening of two and more analogue signals. (Machine-translation by Google Translate, not legally binding)
ES330136A1 (en) A multiple position digital code extractor apparatus for secondary radar systems. (Machine-translation by Google Translate, not legally binding)
GB686439A (en) Improvements in and relating to apparatus for encoding electric signals
GB1152360A (en) Improvements in and relating to Tuning of High Frequency Amplifiers
JPS5219904A (en) Acousticon
IL48110A (en) Switches for use in wired broadcasting systems
SU425207A1 (en) DEVICE FOR AMPLIFIED MEASURING SIGNAL
SU482711A1 (en) The device automatically assigns time scales to the reference radio signals
FR2024685A5 (en) Welding by discharging capacitors
SU433483A1 (en)
ES382031A1 (en) Installation to try distance repeaters supplied at distance with continuous current. (Machine-translation by Google Translate, not legally binding)
JPS5283111A (en) Testing for subscriber s line
GB1291621A (en) Delay circuit
ES388415A1 (en) Improvements in tone transmission circuits. (Machine-translation by Google Translate, not legally binding)
GB1231640A (en)