FR2171390B1 - - Google Patents
Info
- Publication number
- FR2171390B1 FR2171390B1 FR7304734A FR7304734A FR2171390B1 FR 2171390 B1 FR2171390 B1 FR 2171390B1 FR 7304734 A FR7304734 A FR 7304734A FR 7304734 A FR7304734 A FR 7304734A FR 2171390 B1 FR2171390 B1 FR 2171390B1
- 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
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/127—Arrangements for measuring electric power or power factor by using pulse modulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
- G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
- G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K7/00—Modulating pulses with a continuously-variable modulating signal
- H03K7/08—Duration or width modulation ; Duty cycle modulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- Measurement Of Current Or Voltage (AREA)
- Amplitude Modulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2206223A DE2206223A1 (de) | 1972-02-10 | 1972-02-10 | Elektronische multipliziereinrichtung nach dem time-division-verfahren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2171390A1 FR2171390A1 (US20100223739A1-20100909-C00025.png) | 1973-09-21 |
| FR2171390B1 true FR2171390B1 (US20100223739A1-20100909-C00025.png) | 1978-03-03 |
Family
ID=5835561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7304734A Expired FR2171390B1 (US20100223739A1-20100909-C00025.png) | 1972-02-10 | 1973-02-09 |
Country Status (7)
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053832A (en) * | 1976-05-24 | 1977-10-11 | National Semiconductor Corporation | A.C. power meter |
| DE2747385C2 (de) * | 1977-10-21 | 1983-12-29 | Siemens AG, 1000 Berlin und 8000 München | Elektronischer Wechselstromzähler |
| US4408283A (en) * | 1981-06-08 | 1983-10-04 | Transdata, Inc. | Time division multiplier transducer with digitally derived phase shift adjustment for reactive power and energy measurement |
| US4801874A (en) * | 1987-02-27 | 1989-01-31 | Process Systems, Inc. | Method and apparatus for measuring electricity |
| DE29511680U1 (de) * | 1995-07-19 | 1996-11-21 | Niggemeyer, Gert Günther, 21244 Buchholz | Multiplikationsschaltung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1224162A (en) * | 1967-01-10 | 1971-03-03 | English Electric Co Ltd | Improvements in power meters |
| US3466460A (en) * | 1967-01-20 | 1969-09-09 | Weston Instruments Inc | Time division multiplier |
| CH462953A (de) * | 1967-09-14 | 1968-09-30 | Landis & Gyr Ag | Elektronische Leistungsmesseinrichtung |
| FR1552053A (US20100223739A1-20100909-C00025.png) * | 1967-11-08 | 1969-01-03 | ||
| DE1901885C3 (de) * | 1969-01-15 | 1974-08-08 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schaltungsanordnung zur Multiplikation zweier elektrischer Wechselgrößen, insbesondere zur Leistungsmessung |
| AU414207B2 (en) * | 1969-09-01 | 1971-06-17 | The Commonwealth Of Australia | Analogue multiplier |
-
1972
- 1972-02-10 DE DE2206223A patent/DE2206223A1/de active Pending
-
1973
- 1973-01-30 NL NL7301310A patent/NL7301310A/xx unknown
- 1973-02-07 IT IT20105/73A patent/IT978874B/it active
- 1973-02-08 US US00330618A patent/US3818206A/en not_active Expired - Lifetime
- 1973-02-09 JP JP48016389A patent/JPS4890150A/ja active Pending
- 1973-02-09 SE SE7301832A patent/SE377847B/xx unknown
- 1973-02-09 FR FR7304734A patent/FR2171390B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT978874B (it) | 1974-09-20 |
| SE377847B (US20100223739A1-20100909-C00025.png) | 1975-07-28 |
| FR2171390A1 (US20100223739A1-20100909-C00025.png) | 1973-09-21 |
| US3818206A (en) | 1974-06-18 |
| JPS4890150A (US20100223739A1-20100909-C00025.png) | 1973-11-24 |
| DE2206223A1 (de) | 1973-08-23 |
| NL7301310A (US20100223739A1-20100909-C00025.png) | 1973-08-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |