FR2389276A1 - Montage synthetiseur numerique de frequence de remplacement - Google Patents
Montage synthetiseur numerique de frequence de remplacementInfo
- Publication number
- FR2389276A1 FR2389276A1 FR7812384A FR7812384A FR2389276A1 FR 2389276 A1 FR2389276 A1 FR 2389276A1 FR 7812384 A FR7812384 A FR 7812384A FR 7812384 A FR7812384 A FR 7812384A FR 2389276 A1 FR2389276 A1 FR 2389276A1
- Authority
- FR
- France
- Prior art keywords
- digital synthesizer
- replacement frequency
- frequency digital
- synthesizer assembly
- buffer
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K21/00—Details of pulse counters or frequency dividers
- H03K21/38—Starting, stopping or resetting the counter
Landscapes
- Electronic Switches (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Current Or Voltage (AREA)
- Logic Circuits (AREA)
Abstract
L'invention concerne un montage synthétiseur numérique de fréquence de remplacement Après la suppression ou une panne de l'alimentation en courant alternatif appliquée, il reproduit des signaux indiquant de façon précise chaque point de passage par zéro de la forme d'onde de courant alternatif. Un compteur binaire haute-fréquence compte continuellement des impulsions engendrées intérieurement et, à la fin de chaque période du courant alternatif, mémorise la moitié du compte, moitié qui représente 180 degrés , dans un tampon de stockage. Lorsque le courant alternatif fait défaut, le compteur continue à se recharger à partir du tampon et engendre des impulsions de sortie.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/792,155 US4104538A (en) | 1977-04-29 | 1977-04-29 | Digitally synthesized back-up frequency |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2389276A1 true FR2389276A1 (fr) | 1978-11-24 |
Family
ID=25155974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7812384A Withdrawn FR2389276A1 (fr) | 1977-04-29 | 1978-04-26 | Montage synthetiseur numerique de frequence de remplacement |
Country Status (5)
Country | Link |
---|---|
US (1) | US4104538A (fr) |
CA (1) | CA1094172A (fr) |
DE (1) | DE2817707A1 (fr) |
FR (1) | FR2389276A1 (fr) |
GB (1) | GB1585019A (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4238691A (en) * | 1978-12-27 | 1980-12-09 | Bell Telephone Laboratories, Incorporated | Phase control arrangement to limit output signal transients during power source substitution in an uninterruptible power supply |
CH646287A5 (de) * | 1979-09-28 | 1984-11-15 | Siemens Ag Albis | Schaltungsanordnung zur zeitlichen verschiebung von impulsen. |
US4531064A (en) * | 1980-05-27 | 1985-07-23 | Levine Michael R | Electronic thermostat with repetitive operation cycle |
US4383184A (en) * | 1980-06-26 | 1983-05-10 | Texas Instruments Incorporated | Power controller |
US4779007A (en) * | 1987-02-13 | 1988-10-18 | Unison Technologies, Inc. | Uninterrupted power supply system |
US4713555A (en) * | 1987-04-08 | 1987-12-15 | Dallas Semiconductor Corporation | Battery charging protection circuit |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3229111A (en) * | 1961-10-27 | 1966-01-11 | Electro Seal Corp | A.c. power system having alternate sources of supply |
US3529215A (en) * | 1967-10-02 | 1970-09-15 | Hathaway Instr Inc | Digital off frequency relay |
DE2025865A1 (de) * | 1969-05-29 | 1970-12-17 | General Electric Co., Schenectady, N.Y. (V.St.A.) | Relais zum überwachen der Frequenz eines periodischen Signals |
FR2166483A5 (fr) * | 1971-12-27 | 1973-08-17 | Burroughs Corp | |
US3805139A (en) * | 1972-09-29 | 1974-04-16 | Ibm | Programmed waveform power inverter control system |
DE2405034A1 (de) * | 1974-02-02 | 1975-08-14 | Bosch Gmbh Robert | Stochastischer impulszaehler |
-
1977
- 1977-04-29 US US05/792,155 patent/US4104538A/en not_active Expired - Lifetime
-
1978
- 1978-03-31 GB GB12732/78A patent/GB1585019A/en not_active Expired
- 1978-04-03 CA CA300,274A patent/CA1094172A/fr not_active Expired
- 1978-04-22 DE DE19782817707 patent/DE2817707A1/de not_active Withdrawn
- 1978-04-26 FR FR7812384A patent/FR2389276A1/fr not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3229111A (en) * | 1961-10-27 | 1966-01-11 | Electro Seal Corp | A.c. power system having alternate sources of supply |
US3529215A (en) * | 1967-10-02 | 1970-09-15 | Hathaway Instr Inc | Digital off frequency relay |
DE2025865A1 (de) * | 1969-05-29 | 1970-12-17 | General Electric Co., Schenectady, N.Y. (V.St.A.) | Relais zum überwachen der Frequenz eines periodischen Signals |
FR2166483A5 (fr) * | 1971-12-27 | 1973-08-17 | Burroughs Corp | |
US3805139A (en) * | 1972-09-29 | 1974-04-16 | Ibm | Programmed waveform power inverter control system |
DE2405034A1 (de) * | 1974-02-02 | 1975-08-14 | Bosch Gmbh Robert | Stochastischer impulszaehler |
Also Published As
Publication number | Publication date |
---|---|
US4104538A (en) | 1978-08-01 |
DE2817707A1 (de) | 1978-11-02 |
CA1094172A (fr) | 1981-01-20 |
GB1585019A (en) | 1981-02-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |