FR2279143A1 - Dispositif de mesure de temps comportant un generateur de frequence determinee - Google Patents
Dispositif de mesure de temps comportant un generateur de frequence determineeInfo
- Publication number
- FR2279143A1 FR2279143A1 FR7421207A FR7421207A FR2279143A1 FR 2279143 A1 FR2279143 A1 FR 2279143A1 FR 7421207 A FR7421207 A FR 7421207A FR 7421207 A FR7421207 A FR 7421207A FR 2279143 A1 FR2279143 A1 FR 2279143A1
- Authority
- FR
- France
- Prior art keywords
- frequency generator
- liquid crystal
- crystal display
- measuring time
- dry battery
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title 1
- 239000003990 capacitor Substances 0.000 abstract 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F5/00—Apparatus for producing preselected time intervals for use as timing standards
- G04F5/10—Apparatus for producing preselected time intervals for use as timing standards using electric or electronic resonators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7421207A FR2279143A1 (fr) | 1974-06-19 | 1974-06-19 | Dispositif de mesure de temps comportant un generateur de frequence determinee |
US05/513,927 US4009565A (en) | 1974-05-07 | 1974-10-10 | Time measuring device having a periodic signal generator |
DE19752526180 DE2526180A1 (de) | 1974-06-19 | 1975-06-12 | Zeitmessvorrichtung mit einem generator bestimmter frequenz |
GB2603675A GB1509395A (en) | 1974-06-19 | 1975-06-18 | Chronometric device |
BR7504920D BR7503824A (pt) | 1974-06-19 | 1975-06-18 | Dispositivo de medida de tempo com um gerador de sinais per iodicos de frequencia determinada |
JP7499575A JPS5116964A (ja) | 1974-06-19 | 1975-06-19 | Shoteinoshuhasuhatsuseikiojusuru jikansokuteisochi |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7421207A FR2279143A1 (fr) | 1974-06-19 | 1974-06-19 | Dispositif de mesure de temps comportant un generateur de frequence determinee |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2279143A1 true FR2279143A1 (fr) | 1976-02-13 |
FR2279143B1 FR2279143B1 (fr) | 1978-01-13 |
Family
ID=9140223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7421207A Granted FR2279143A1 (fr) | 1974-05-07 | 1974-06-19 | Dispositif de mesure de temps comportant un generateur de frequence determinee |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2279143A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2339989A1 (fr) * | 1976-03-15 | 1977-08-26 | Bicosa Recherches | Perfectionnements apportes a un circuit oscillateur a transistor et element piezoelectrique |
US4107625A (en) * | 1976-03-15 | 1978-08-15 | Biscosa Societe De Recherche | Transistor crystal oscillator which may be paired for generating a beat frequency |
EP2741151A1 (fr) * | 2012-12-06 | 2014-06-11 | Services Pétroliers Schlumberger | Oscillateur à base de silicium pour un système d'outil de fond de puits fabriqués avec celui-ci |
-
1974
- 1974-06-19 FR FR7421207A patent/FR2279143A1/fr active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2339989A1 (fr) * | 1976-03-15 | 1977-08-26 | Bicosa Recherches | Perfectionnements apportes a un circuit oscillateur a transistor et element piezoelectrique |
US4107625A (en) * | 1976-03-15 | 1978-08-15 | Biscosa Societe De Recherche | Transistor crystal oscillator which may be paired for generating a beat frequency |
EP2741151A1 (fr) * | 2012-12-06 | 2014-06-11 | Services Pétroliers Schlumberger | Oscillateur à base de silicium pour un système d'outil de fond de puits fabriqués avec celui-ci |
US9203413B2 (en) | 2012-12-06 | 2015-12-01 | Schlumberger Technology Corporation | Silicon-based oscillator for a downhole tool |
Also Published As
Publication number | Publication date |
---|---|
FR2279143B1 (fr) | 1978-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |