Frequency Compensated A-C Ammeters and Voltmeters
- 1 November 1946
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the American Institute of Electrical Engineers
- Vol. 65 (11) , 761-764
- https://doi.org/10.1109/t-aiee.1946.5059243
Abstract
The increased use of a-c instruments over a frequency range of 25 to 3,000 cycles for aircraft and industrial applications has imposed new requirements on instrument design. It is recognized that the standard type of a-c ammeters and voltmeters normally calibrated for use at a given frequency are subject to errors in indication when used at other frequencies. This paper describes the manner in which one line of a-c ammeters and voltmeters can be compensated to have minimum errors resulting from changes in frequency over a range of 25 to 3,000 cycles. Errors found in the uncompensated and compensated types of instruments with changes in frequency are shown, and a practical means of determining the amount of compensation and its application to ammeters and voltmeters is presented.Keywords
This publication has 0 references indexed in Scilit: