Electromagnetic acoustic transducer fault detection circuit

Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters

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Details

324537, 324557, 73 1D, 73 1DV, G01R 3500

Patent

active

056844069

ABSTRACT:
A fault detecting circuit for use with an electromagnetic acoustic transducer having an electrostatic shield and a wear surface for determining when the wear surface for contacting test surfaces has developed holes.

REFERENCES:
patent: 1811765 (1931-06-01), Snelling
patent: 4806849 (1989-02-01), Kihira

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