FI906390A - FOERFARANDE OCH ANORDNING FOER MAETNING AV SPAENNING. - Google Patents
FOERFARANDE OCH ANORDNING FOER MAETNING AV SPAENNING. Download PDFInfo
- Publication number
- FI906390A FI906390A FI906390A FI906390A FI906390A FI 906390 A FI906390 A FI 906390A FI 906390 A FI906390 A FI 906390A FI 906390 A FI906390 A FI 906390A FI 906390 A FI906390 A FI 906390A
- Authority
- FI
- Finland
- Prior art keywords
- voltage
- measuring
- charge
- spaenning
- condenser units
- Prior art date
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- Measurement Of Current Or Voltage (AREA)
Abstract
Procedure for measuring voltage, in which procedure the input circuit to the voltage to be measured Uin and the measuring circuit are galvanically separated by a capacitative coupling consisting of two condenser units C, C'. The measurement is carried out so that the measuring circuit is made to oscillate between determined voltage levels at a certain frequency whereby the condenser units will charge the input and measuring circuits, so that the current Iin corresponding to the measured voltage Uin is directed into the input circuit via an impedance R3,R4 coupled to the input circuit so that the charge in one of the condenser units is removed via one pole of the impedance and fed to the second pole, and from a charge which is obtained from a determined voltage Ur, two measurement signals f1,f2 are formed which describe the measured voltage and thus, using the said two measurement signals f1,f2, the measurement value can be derived. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI906390A FI87402C (en) | 1990-12-21 | 1990-12-21 | Method and apparatus for measuring voltage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI906390A FI87402C (en) | 1990-12-21 | 1990-12-21 | Method and apparatus for measuring voltage |
FI906390 | 1990-12-21 |
Publications (4)
Publication Number | Publication Date |
---|---|
FI906390A0 FI906390A0 (en) | 1990-12-21 |
FI906390A true FI906390A (en) | 1992-06-22 |
FI87402B FI87402B (en) | 1992-09-15 |
FI87402C FI87402C (en) | 1992-12-28 |
Family
ID=8531643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI906390A FI87402C (en) | 1990-12-21 | 1990-12-21 | Method and apparatus for measuring voltage |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI87402C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI101328B1 (en) * | 1997-04-18 | 1998-05-29 | Kone Oy | A method for monitoring the operation of an elevator contact circuit |
-
1990
- 1990-12-21 FI FI906390A patent/FI87402C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI87402B (en) | 1992-09-15 |
FI87402C (en) | 1992-12-28 |
FI906390A0 (en) | 1990-12-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: KONE OY |