The differential transformer is a passive inductive transformer also known as Linear Variable Differential Transformer. LVDT has a soft iron core that slides within the hollow transformer & therefore affects magnetic coupling between the primary and two secondary’s. The displacement to be measured is applied at its arm attached to the soft iron core. When the core is in the normal position (null), equal voltages are induced in the two secondary’s. The frequency of ac applied to the primary winding ranges from 50Hz to 20 KHz.
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Негізгі бет Ғылым және технология Measurement of Distance using LVDT
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