Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...

Abstract: To address the inconsistent measurements of debris sensors, a precision and sensitivity debris sensor based on a multi-excitation-coil structure (MECS) is proposed. By tailoring a ...

Abstract: Eddy current methods are wildly used for measuringthe electromagnetic property of ferromagneticsamples due to its high sensitivities and portability (when using the remote electromagnetic ...