magnetostrictive oscillator
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magnetostriction oscillator — noun also magnetostrictive oscillator : an electric oscillator in which the frequency is controlled by the mechanical vibrations induced in a body by magnetostriction … Useful english dictionary
Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( … Wikipedia
Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) … Wikipedia
