CH637675A4 - - Google Patents
Info
- Publication number
- CH637675A4 CH637675A4 CH637675D CH637675D CH637675A4 CH 637675 A4 CH637675 A4 CH 637675A4 CH 637675 D CH637675 D CH 637675D CH 637675 D CH637675 D CH 637675D CH 637675 A4 CH637675 A4 CH 637675A4
- Authority
- CH
- Switzerland
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
- G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
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- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G3/00—Producing timing pulses
- G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S388/00—Electricity: motor control systems
- Y10S388/907—Specific control circuit element or device
- Y10S388/909—Monitoring means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S388/00—Electricity: motor control systems
- Y10S388/907—Specific control circuit element or device
- Y10S388/912—Pulse or frequency counter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Stepping Motors (AREA)
- Electromechanical Clocks (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH637675A CH600413B5 (xx) | 1975-05-16 | 1975-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH637675A4 true CH637675A4 (xx) | 1977-05-13 |
Family
ID=4308596
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH637675D CH637675A4 (xx) | 1975-05-16 | 1975-05-16 | |
| CH637675A CH600413B5 (xx) | 1975-05-16 | 1975-05-16 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH637675A CH600413B5 (xx) | 1975-05-16 | 1975-05-16 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4086521A (xx) |
| JP (1) | JPS51141671A (xx) |
| CH (2) | CH637675A4 (xx) |
| DE (1) | DE2619888B2 (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH616045B (fr) * | 1978-06-20 | Ebauches Sa | Procede pour reduire la consommation d'une piece d'horlogerie electronique et piece d'horlogerie electronique mettant en oeuvre ce procede. | |
| JPS5883292A (ja) * | 1981-11-12 | 1983-05-19 | Shiojiri Kogyo Kk | 電子腕時計 |
| JPS60241784A (ja) * | 1984-05-15 | 1985-11-30 | Sanyo Electric Co Ltd | 直流サ−ボモ−タの制御装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3110853A (en) * | 1958-06-05 | 1963-11-12 | Westinghouse Electric Corp | Electrical control apparatus |
| US3206665A (en) * | 1962-12-19 | 1965-09-14 | Lear Siegler Inc | Digital speed controller |
| US3564368A (en) * | 1968-01-10 | 1971-02-16 | Gen Electric | Spindle speed control monitor |
| US3546553A (en) * | 1968-09-06 | 1970-12-08 | Nasa | System for maintaining a motor at a predetermined speed utilizing digital feedback means |
| US3621354A (en) * | 1970-01-07 | 1971-11-16 | Gen Electric | Dc motor current actuated digital control system |
| US3646417A (en) * | 1971-03-25 | 1972-02-29 | Ibm | Digital speed servomechanism |
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1975
- 1975-05-16 CH CH637675D patent/CH637675A4/xx unknown
- 1975-05-16 CH CH637675A patent/CH600413B5/xx not_active IP Right Cessation
-
1976
- 1976-05-05 DE DE2619888A patent/DE2619888B2/de not_active Withdrawn
- 1976-05-14 JP JP51055208A patent/JPS51141671A/ja active Pending
- 1976-05-14 US US05/686,524 patent/US4086521A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4086521A (en) | 1978-04-25 |
| DE2619888B2 (de) | 1979-09-13 |
| JPS51141671A (en) | 1976-12-06 |
| CH600413B5 (xx) | 1978-06-15 |
| DE2619888A1 (de) | 1976-11-18 |