Title:
FROST DETECTOR
Document Type and Number:
Japanese Patent JPS5375995
Kind Code:
A
Abstract:
PURPOSE: To simply and correctly detect the front formation directly as a variation in electric signals by providing an oscillating circuit and a detecting circuit connected thereto in a frost detecting element which is equipped with an oscillating member having a thin plate of piezoelectric porcelain.
Inventors:
KASAHARA MASAO
ISE YUKIHIKO
TOKUSHIMA AKIRA
HAYAKAWA SHIGERU
ISE YUKIHIKO
TOKUSHIMA AKIRA
HAYAKAWA SHIGERU
Application Number:
JP15157176A
Publication Date:
July 05, 1978
Filing Date:
December 16, 1976
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G01N5/02; G01N27/00; (IPC1-7): G01N27/00