FR2137600B1 - - Google Patents
Info
- Publication number
- FR2137600B1 FR2137600B1 FR7216315A FR7216315A FR2137600B1 FR 2137600 B1 FR2137600 B1 FR 2137600B1 FR 7216315 A FR7216315 A FR 7216315A FR 7216315 A FR7216315 A FR 7216315A FR 2137600 B1 FR2137600 B1 FR 2137600B1
- 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
-
- 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
- G01R23/09—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 using analogue integrators, e.g. capacitors establishing a mean value by balance of input signals and defined discharge signals or leakage
-
- 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
- G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH688171A CH531179A (de) | 1971-05-10 | 1971-05-10 | Verfahren und Einrichtung zur Messung der Frequenz von einem einen bestimmten, einstellbaren Pegel überschreitenden elektrischen Signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2137600A1 FR2137600A1 (fr) | 1972-12-29 |
| FR2137600B1 true FR2137600B1 (fr) | 1976-08-06 |
Family
ID=4316516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7216315A Expired FR2137600B1 (fr) | 1971-05-10 | 1972-05-08 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3803487A (fr) |
| AT (1) | AT318071B (fr) |
| CH (1) | CH531179A (fr) |
| DE (1) | DE2127283A1 (fr) |
| FR (1) | FR2137600B1 (fr) |
| GB (1) | GB1385206A (fr) |
| NL (1) | NL7206175A (fr) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH600685A5 (fr) * | 1975-11-28 | 1978-06-30 | Patelhold Patentverwertung | |
| GB1601333A (en) * | 1977-03-02 | 1981-10-28 | Lucas Industries Ltd | Circuit for producing a digital count representing the average value of a variable frequency |
| US4574635A (en) * | 1984-11-02 | 1986-03-11 | North American Philips Corporation | Monitoring of frequency shift of ultrasound pulses in tissue |
| DE9014815U1 (fr) * | 1990-10-26 | 1991-01-24 | Mesacon Gesellschaft Fuer Messtechnik Mbh, 4600 Dortmund, De | |
| JP2009250807A (ja) * | 2008-04-07 | 2009-10-29 | Seiko Epson Corp | 周波数測定装置及び測定方法 |
| JP2010271091A (ja) * | 2009-05-20 | 2010-12-02 | Seiko Epson Corp | 周波数測定装置 |
| JP5440999B2 (ja) * | 2009-05-22 | 2014-03-12 | セイコーエプソン株式会社 | 周波数測定装置 |
| JP5517033B2 (ja) * | 2009-05-22 | 2014-06-11 | セイコーエプソン株式会社 | 周波数測定装置 |
| JP5582447B2 (ja) * | 2009-08-27 | 2014-09-03 | セイコーエプソン株式会社 | 電気回路、同電気回路を備えたセンサーシステム、及び同電気回路を備えたセンサーデバイス |
| JP5815918B2 (ja) * | 2009-10-06 | 2015-11-17 | セイコーエプソン株式会社 | 周波数測定方法、周波数測定装置及び周波数測定装置を備えた装置 |
| JP5876975B2 (ja) * | 2009-10-08 | 2016-03-02 | セイコーエプソン株式会社 | 周波数測定装置及び周波数測定装置における変速分周信号の生成方法 |
| JP5883558B2 (ja) | 2010-08-31 | 2016-03-15 | セイコーエプソン株式会社 | 周波数測定装置及び電子機器 |
| ITMI20120697A1 (it) * | 2012-04-27 | 2013-10-28 | Dora Spa | Circuito di controllo con isteresi di un regolatore di tensione a commutazione |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB799674A (en) * | 1955-09-15 | 1958-08-13 | Rank Cintel Ltd | Improvements in or relating to apparatus for determining the frequency of electrical signals |
| US3609326A (en) * | 1969-01-22 | 1971-09-28 | Hewlett Packard Co | Counting apparatus and method using separate counters for reference and unknown signal |
-
1971
- 1971-05-10 CH CH688171A patent/CH531179A/de not_active IP Right Cessation
- 1971-06-02 DE DE19712127283 patent/DE2127283A1/de active Pending
-
1972
- 1972-02-02 AT AT81972A patent/AT318071B/de not_active IP Right Cessation
- 1972-05-02 US US00249635A patent/US3803487A/en not_active Expired - Lifetime
- 1972-05-08 GB GB2142072A patent/GB1385206A/en not_active Expired
- 1972-05-08 NL NL7206175A patent/NL7206175A/xx not_active Application Discontinuation
- 1972-05-08 FR FR7216315A patent/FR2137600B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3803487A (en) | 1974-04-09 |
| DE2127283A1 (de) | 1972-11-23 |
| GB1385206A (en) | 1975-02-26 |
| NL7206175A (fr) | 1972-11-14 |
| CH531179A (de) | 1972-11-30 |
| AT318071B (de) | 1974-09-25 |
| FR2137600A1 (fr) | 1972-12-29 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |