Magnetostrictive driving power supply

Abstract

The invention belongs to the technical field of driving power supplies of transducers, and relates to a driving power supply with continuous adjustable output voltage of a magnetostrictive transducer. The anode of a direct current power supply is connected with one end of an inductor, and the other end of the inductor is connected with the anode of a diode I. The cathode of the diode I is connected with one end of a capacitor, and the other end of the capacitor is connected with the anode of a diode II. The cathode of the diode II is connected with the cathode of the direct current power supply, and a switching tube is connected with the diode I and the direct current power supply. One end of the transducer is connected between the capacitor and the anode of the diode II, and the other end of the transducer is connected between the cathode of the direct current power supply and the cathode of the diode II. A resistor does not need to be added into the whole driving circuit to limit current, and the working efficiency is high. The boosting multiples can be continuously regulated in a certain range, and the output intensity of a magnetostrictive actuator is changed. The driving power supply is simple in structure and is suitable for battery power supplying and occasions with higher requirements on the installation space.

Description

technical field [0001] The invention belongs to the technical field of transducer driving power supply, and in particular relates to a driving power supply of a magnetostrictive transducer with continuously adjustable output voltage. Background technique [0002] In the fields of ultrasonic logging and downhole information transmission, magnetostriction has a wide range of applications. Compared with traditional materials, transducers made of magnetostrictive technology have the advantages of fast response speed and high energy density. Magnetostriction requires a strong magnetic field when it works, which requires the magnetostrictive drive power supply to be able to generate a large current in an instant, and also needs to be able to work continuously in a wide frequency range, which has a great impact on the transducer drive power supply. The design puts forward high requirements. [0003] In order to generate a large driving current, the DC power supply needs to be boos...

AI Technical Summary

Problems solved by technology

In order to prevent the current passing through the switching tube from being too large, a current-limiting resistor needs to be connected in series in the circuit, resulting in the loss of part of the energy, and there is a problem of heat dissipation when the resistor is overheated.

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