Title :
New form of digital wattmeter using a double dual-slope principle
Author_Institution :
National Physical Laboratory, Teddington, UK
Abstract :
A proposed a.c. digital watt/joule meter is described, which combines the principle of the well known dual-slope analogue-digital convertor with that of the sampling digital wattmeter to provide a system where multiplication, digitising, averaging and integration may be performed by using relatively few components.
Keywords :
analogue-digital conversion; digital instrumentation; power measurement; wattmeters; AC digital watt/joule meter; averaging; digitising; double dual slope operation; dual slope A/D conversion; integration; multiplication; operation; sampling digital wattmeter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19770296
