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 trainInfo
- 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
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.
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)
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)
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 |
-
1975
- 1975-06-06 FR FR7517673A patent/FR2313812A2/en active Granted
Patent Citations (1)
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)
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 |
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