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The existing AC-DC transducers have several disadvantages: limited range of the measured value, narrow range of operating frequencies, low response speed, low accuracy and the inability to regulate and change the polarity of the output voltage. In this work, the task of developing and researching a measuring AC-DC transducer free from the disadvantages of existing converters is set. A new principle of conversion of sinusoidal voltage to DC is proposed, based on the use of a controlled phase shifter of the input signal within 360° in the device, which is controlled by an alternating voltage of a sawtooth shape with constant amplitude. The results of the development of a measuring AC-DC transducer operating on the basis of the proposed principle and having stronger performance than the known ones are presented. The structural diagram of developed transducer is given. It has been demonstrated that the developed measuring transducer has high response speed, sufficient accuracy and a wide range of operating frequencies. A simulation model of the developed transducer was compiled in the Matlab & Simulink environment and oscillograms of its operation were obtained, confirming its operability and the correctness of the choice of technical solutions. The developed adjustable measuring transducer allows regulating the output voltage and changing its polarity under the action of an external DC control signal.
Evgeny B. Kolesnikov
Novomoskovsk Institute (branch) of the Dmitry Mendeleev University of Chemical Technology of Russia, Russia, 301650, Novomoskovsk, Druzhby st., 8

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