FI906390A - FOERFARANDE OCH ANORDNING FOER MAETNING AV SPAENNING. - Google Patents

FOERFARANDE OCH ANORDNING FOER MAETNING AV SPAENNING. Download PDF

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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
Application number
FI906390A
Other languages
Finnish (fi)
Other versions
FI87402B (en
FI87402C (en
FI906390A0 (en
Inventor
Nils-Robert Roschier
Original Assignee
Kone Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kone Oy filed Critical Kone Oy
Priority to FI906390A priority Critical patent/FI87402C/en
Publication of FI906390A0 publication Critical patent/FI906390A0/en
Publication of FI906390A publication Critical patent/FI906390A/en
Publication of FI87402B publication Critical patent/FI87402B/en
Application granted granted Critical
Publication of FI87402C publication Critical patent/FI87402C/en

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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>
FI906390A 1990-12-21 1990-12-21 Method and apparatus for measuring voltage FI87402C (en)

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)

* Cited by examiner, † Cited by third party
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

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