FR2449286B1 - - Google Patents
Info
- Publication number
- FR2449286B1 FR2449286B1 FR8003441A FR8003441A FR2449286B1 FR 2449286 B1 FR2449286 B1 FR 2449286B1 FR 8003441 A FR8003441 A FR 8003441A FR 8003441 A FR8003441 A FR 8003441A FR 2449286 B1 FR2449286 B1 FR 2449286B1
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/0205—Circuit arrangements for generating control signals using an auxiliary engine speed control
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds
- G01P3/60—Devices characterised by the use of electric or magnetic means for comparing two speeds by measuring or comparing frequency of generated currents or voltages
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
- G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Measurement Of Current Or Voltage (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Manipulation Of Pulses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1599679A JPS55109968A (en) | 1979-02-16 | 1979-02-16 | Frequency decision circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2449286A1 FR2449286A1 (fr) | 1980-09-12 |
| FR2449286B1 true FR2449286B1 (US07368563-20080506-C00056.png) | 1984-03-16 |
Family
ID=11904247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8003441A Granted FR2449286A1 (fr) | 1979-02-16 | 1980-02-15 | Circuit discriminateur de frequence et procede d'utilisation |
Country Status (5)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6037815A (ja) * | 1983-08-09 | 1985-02-27 | Nec Corp | クロツク検出回路 |
| US4633097A (en) * | 1983-11-17 | 1986-12-30 | Motorola, Inc. | Clock monitor circuit and method |
| DE3610605A1 (de) * | 1986-03-29 | 1987-10-01 | Fichtel & Sachs Ag | Frequenzschalter |
| JPS6450611A (en) * | 1987-08-21 | 1989-02-27 | Nec Corp | Phase shifter |
| US4845379A (en) * | 1988-07-05 | 1989-07-04 | International Business Machines Corporation | Sense circuit for detecting absence of a pulse train |
| US4912419A (en) * | 1988-12-19 | 1990-03-27 | Ford Motor Company | Signal conditioning circuit and method |
| JP2635778B2 (ja) * | 1989-09-21 | 1997-07-30 | 株式会社東芝 | パルス回路 |
| JPH0632632U (ja) * | 1992-10-07 | 1994-04-28 | 株式会社サンゴ | 支柱不要のメッシュフェンス |
| DE4325680A1 (de) * | 1993-07-30 | 1995-02-02 | Acer Peripherals Inc | Vorrichtung zum Detektieren einer Signalfrequenz und Steuern einer Anzeigevorrichtung |
| US5546025A (en) * | 1994-03-11 | 1996-08-13 | Mitel, Inc. | Low frequency discrimator using upper and lower thresholds |
| JPH10288635A (ja) * | 1997-04-16 | 1998-10-27 | Nec Ic Microcomput Syst Ltd | 周波数検出回路 |
| US7580482B2 (en) * | 2003-02-19 | 2009-08-25 | Endres Thomas J | Joint, adaptive control of equalization, synchronization, and gain in a digital communications receiver |
| CN102520244A (zh) * | 2011-12-21 | 2012-06-27 | 山河智能装备股份有限公司 | 一种频率信号检测电路 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1541895A1 (de) * | 1965-11-15 | 1969-11-06 | Westland Aircraft Ltd | Frequenzbestimmung auf elektronischem Wege |
| ES357297A1 (es) * | 1967-08-17 | 1970-03-01 | Standard Electrica Sa | Detector de tono. |
| DE1294999B (de) * | 1968-03-01 | 1969-05-14 | Ibm Deutschland | Impulsfolgefrequenz-Diskriminator |
| US3585400A (en) * | 1968-12-12 | 1971-06-15 | Gosh Instr Inc | Electrical frequency detecting device and method |
| US3594588A (en) * | 1969-04-01 | 1971-07-20 | Motorola Inc | Frequency detection system |
| US3497816A (en) * | 1969-04-16 | 1970-02-24 | American Mach & Foundry | Frequency sensor and control circuit |
| SE403196B (sv) * | 1973-09-17 | 1978-07-31 | Buck Robert | Forfarande for overvakning av ett varvtal och kopplingsanordning for genomforande av detta forfarande |
| DE2350514A1 (de) * | 1973-10-09 | 1975-04-30 | Endress Hauser Gmbh Co | Schaltungsanordnung zur anzeige von frequenzaenderungen einer wechselspannung |
| US4217506A (en) * | 1978-05-17 | 1980-08-12 | Northern Telecom, Inc. | Level selective a-c monitoring circuit |
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1979
- 1979-02-16 JP JP1599679A patent/JPS55109968A/ja active Pending
-
1980
- 1980-02-11 US US06/120,097 patent/US4322642A/en not_active Expired - Lifetime
- 1980-02-15 DE DE3005713A patent/DE3005713C2/de not_active Expired
- 1980-02-15 FR FR8003441A patent/FR2449286A1/fr active Granted
- 1980-02-15 GB GB8005225A patent/GB2045558B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2045558A (en) | 1980-10-29 |
| US4322642A (en) | 1982-03-30 |
| GB2045558B (en) | 1983-05-11 |
| DE3005713C2 (de) | 1986-03-27 |
| FR2449286A1 (fr) | 1980-09-12 |
| JPS55109968A (en) | 1980-08-23 |
| DE3005713A1 (de) | 1980-09-04 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |