EP 0465476 A4 19920708 - A SAMPLING CIRCUIT
Title (en)
A SAMPLING CIRCUIT
Publication
Application
Priority
- AU 5157490 A 19900222
- AU PJ347189 A 19890404
Abstract (en)
[origin: WO9012325A1] A sampling circuit, particularly for sampling voltage and current amplitudes in an AC kWh meter, in which signals from transducers (1 and 2) representing the voltage and current amplitues respectively are selectively applied to an analogue-to-digital converter (4) by an analogue multiplexer (3) under the control of a processor (5) which varies the sequence in which the signals are applied to the converter. The processor performs calculations on values measured by the converter to derive the kWh.
IPC 1-7
IPC 8 full level
G01R 21/133 (2006.01)
CPC (source: EP)
G01R 21/133 (2013.01)
Citation (search report)
- [X] EP 0028176 A1 19810506 - ENERTEC [FR]
- [A] DE 2550282 A1 19770518 - BBC BROWN BOVERI & CIE
- [A] IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS AND CONTROL vol. 28, no. 3, August 1981, NEW YORK US pages 180 - 184; HILL & ALDERSON: 'DESIGN OF A MICROPROCESSOR BASED DIGITAL WATTMETER'
- See references of WO 9012325A1
Designated contracting state (EPC)
BE CH DE DK FR GB LI LU NL SE
DOCDB simple family (publication)
WO 9012325 A1 19901018; AU 5157490 A 19901105; EP 0465476 A1 19920115; EP 0465476 A4 19920708
DOCDB simple family (application)
AU 9000067 W 19900222; AU 5157490 A 19900222; EP 90903581 A 19900222