FR2310573A1 - Measuring system for detecting polarity of direct current - senses voltages across windings for comparison with excitation voltage - Google Patents
Measuring system for detecting polarity of direct current - senses voltages across windings for comparison with excitation voltageInfo
- Publication number
- FR2310573A1 FR2310573A1 FR7613424A FR7613424A FR2310573A1 FR 2310573 A1 FR2310573 A1 FR 2310573A1 FR 7613424 A FR7613424 A FR 7613424A FR 7613424 A FR7613424 A FR 7613424A FR 2310573 A1 FR2310573 A1 FR 2310573A1
- Authority
- FR
- France
- Prior art keywords
- direct current
- comparison
- excitation voltage
- winding
- voltage
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/14—Indicating direction of current; Indicating polarity of voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Eletrric Generators (AREA)
- Transformers For Measuring Instruments (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The direction of flow of direct current in a conductor is detected by comparison with an excitation voltage and overcomes problems experienced when saturable transformers are used. Direct current (IDC) flowing in a conductor is detected by a circuit comprising a winding (10) and an excitation voltage supply (14). The winding produces a voltage output dependent on the direct current and a comparison circuit (18) compares the voltage with the excitation voltage. A second winding (12) connected in series opposition to the dirst winding is also connected to the comparison circuit in order to determine polarity. The voltage developed across a load resistor (16) is rectified (20) and enables the direction of the direct current flow to be determined.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57567775A | 1975-05-08 | 1975-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2310573A1 true FR2310573A1 (en) | 1976-12-03 |
| FR2310573B3 FR2310573B3 (en) | 1979-04-06 |
Family
ID=24301276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7613424A Granted FR2310573A1 (en) | 1975-05-08 | 1976-05-05 | Measuring system for detecting polarity of direct current - senses voltages across windings for comparison with excitation voltage |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS51140662A (en) |
| BE (1) | BE841623A (en) |
| ES (1) | ES447719A1 (en) |
| FR (1) | FR2310573A1 (en) |
| IT (1) | IT1069184B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2660678C1 (en) * | 2014-06-02 | 2018-07-09 | Аэроджет Рокетдайн, Инк. | Power supply circuit of electric propulsion system |
-
1976
- 1976-05-05 FR FR7613424A patent/FR2310573A1/en active Granted
- 1976-05-07 IT IT4158376A patent/IT1069184B/en active
- 1976-05-07 BE BE166879A patent/BE841623A/en unknown
- 1976-05-07 ES ES447719A patent/ES447719A1/en not_active Expired
- 1976-05-07 JP JP51051431A patent/JPS51140662A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| BE841623A (en) | 1976-11-08 |
| JPS51140662A (en) | 1976-12-03 |
| ES447719A1 (en) | 1977-10-01 |
| IT1069184B (en) | 1985-03-25 |
| FR2310573B3 (en) | 1979-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |