Aug 28, 2024 07:00:00 'Play a sound' allows you to test how many Hz your ears can hear. This article, originally posted in Japanese on 07:00 Aug 28, 2024, may contains some machine-translated parts.

November 4, 2013. Behlman Electronics Inc. has introduced a new 400-Hz power supply with capabilities beneficial to any markets in which 400-Hz power is used.115/200-VAC 400-Hz ...