24) Linear Variable Differential Transformer (LVDT) & Coefficient of Coupling

Howdy folks. I've been playing around with the idea of doing a video on LVDT's for a while now. I finally have the lock-in amplifier repaired, needed to measure the phase shift, so we're go for launch. I take a ball point pen and wind some coils around it (with the microprocessor controlled coil winder, a few vids back), use a ferrite core mounted on the ink shaft and it works like a charm. I also cover how to measure the coefficient of coupling with my crappy LCR meter. Worked out ok. Anyway, I hope you guys learn something or can use and LVDT for one of your projects. If you do, let me know. I'd love to hear about it!!!

Link to the formulae:
http://exality.com/files/Measuring%20...

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The Current Source
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Oviedo, FL 32762-241

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• #science_technology
• #lvdt
• #linear_variable_differential_transformer
• #linear_variable_displacement_transducer
• #coefficient_of_coupling
• #mutual_inductance
• #lock_in_amplifier
• #phase_measurement
• #linear_displacement