CH305274A4 - - Google Patents
Info
- Publication number
- CH305274A4 CH305274A4 CH305274D CH305274D CH305274A4 CH 305274 A4 CH305274 A4 CH 305274A4 CH 305274 D CH305274 D CH 305274D CH 305274 D CH305274 D CH 305274D CH 305274 A4 CH305274 A4 CH 305274A4
- Authority
- CH
- Switzerland
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
- G01R23/12—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into phase shift
-
- 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
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
- G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
- G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
- G04D7/1214—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring for complete clockworks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732335847 DE2335847C3 (de) | 1973-07-14 | Schaltungsanordnung zur fortlaufenden Anzeige der Gangunterschiede der relativ langsamen Taktfrequenz einer Uhr durch Vergleich mit einer hohen Normalfrequenz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH305274A4 true CH305274A4 (zh) | 1977-07-15 |
Family
ID=5886881
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH305274A CH604270B5 (zh) | 1973-07-14 | 1974-03-05 | |
| CH305274D CH305274A4 (zh) | 1973-07-14 | 1974-03-05 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH305274A CH604270B5 (zh) | 1973-07-14 | 1974-03-05 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3895293A (zh) |
| JP (1) | JPS5443912B2 (zh) |
| CH (2) | CH604270B5 (zh) |
| FR (1) | FR2237201A1 (zh) |
| IT (1) | IT1021526B (zh) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3993984A (en) * | 1975-04-08 | 1976-11-23 | Power Management Corporation | Electronic underfrequency relay |
| US4144491A (en) * | 1977-10-03 | 1979-03-13 | Raytheon Company | Frequency measuring apparatus |
| US4255809A (en) * | 1979-11-02 | 1981-03-10 | Hillman Dale A | Dual redundant error detection system for counters |
| JPS56153923A (en) * | 1980-04-30 | 1981-11-28 | Tokyo Shibaura Electric Co | Digital frequency repeating device |
| US4341995A (en) * | 1981-05-29 | 1982-07-27 | American Optical Corporation | Velocity profile analyzer |
| US4442406A (en) * | 1981-09-29 | 1984-04-10 | Diversified Electronics, Inc. | Frequency monitor with adjustable tolerance |
| US4547726A (en) * | 1983-08-01 | 1985-10-15 | General Electric Company | Means and method for measuring power system frequency |
| US4707653A (en) * | 1985-10-17 | 1987-11-17 | Ampex Corporation | Frequency measurement circuit |
| US4750215A (en) * | 1986-06-24 | 1988-06-07 | Cincinnati Microwave, Inc. | Police radar signal detection circuitry for a police radar warning receiver |
| US5180935A (en) * | 1990-11-09 | 1993-01-19 | Motorola, Inc. | Digital timing discriminator |
| JP2998650B2 (ja) * | 1996-08-20 | 2000-01-11 | 日本電気株式会社 | 分周器用ｄｃ選別回路 |
| KR100204680B1 (ko) * | 1997-02-06 | 1999-06-15 | 김영환 | 다중 주파수 발진기의 출력신호 측정장치 및 그 측정과 교정방법 |
| JP4455201B2 (ja) * | 2004-07-20 | 2010-04-21 | 富士通マイクロエレクトロニクス株式会社 | 検出回路 |
| CN102645583B (zh) * | 2012-04-25 | 2015-04-22 | 郑州轻工业学院 | 基于群周期相位处理的宽频快速频率测量方法 |
| EP2746729A1 (en) | 2012-12-20 | 2014-06-25 | GN Store Nord A/S | An assembly and a method of determining a change in capacitance |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3241063A (en) * | 1962-01-11 | 1966-03-15 | Gen Electric | Interval measuring system using resettable, free-running digital time measuring devices |
| US3777547A (en) * | 1970-07-22 | 1973-12-11 | Denshi Kohgyo Co Ltd | Time rate measuring system for clocks and watches |
-
1974
- 1974-03-04 US US447517A patent/US3895293A/en not_active Expired - Lifetime
- 1974-03-05 CH CH305274A patent/CH604270B5/xx not_active IP Right Cessation
- 1974-03-05 CH CH305274D patent/CH305274A4/xx unknown
- 1974-03-07 JP JP2675874A patent/JPS5443912B2/ja not_active Expired
- 1974-03-07 IT IT49125/74A patent/IT1021526B/it active
- 1974-03-07 FR FR7407754A patent/FR2237201A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US3895293A (en) | 1975-07-15 |
| DE2335847A1 (de) | 1975-01-30 |
| IT1021526B (it) | 1978-02-20 |
| FR2237201A1 (zh) | 1975-02-07 |
| JPS5443912B2 (zh) | 1979-12-22 |
| DE2335847B2 (de) | 1976-11-18 |
| CH604270B5 (zh) | 1978-08-31 |
| JPS5029072A (zh) | 1975-03-24 |