An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Oldham, N.
and Henderson, R.
(1990),
New Low-Voltage Standards in the DC to 1 MHz Frequency Range, Proc., Conference on Precision Electromagnetic Measurements (CPEM), Ottawa, 1, CA
(Accessed May 28, 2023)