SU411918A1 - - Google Patents

Description

one

Sampling refers to the field of acoustic vibration detector and is intended to convert electrical energy into "elastic" oscillations.

The relatively simple, and w, i; roko H1p: I1me.n e.1.y ult, r.azvu is known: a kov.oi generator containing a commut (I | yrush, Iliyi ti rISTor il tiratron, charge (resistor and diezoelectric, subcontractor. the excitation of elastic oscillations of the walls of the leopardite. the raz | the body turns out at times, when the stress on the side plates of the piezonator decreases sharply Forming and removing the effect of an elactic zero. G1p, and this stored note of the mechanical energy (elastic deformation energy) is used to excite free oscillations in the resonator, and the stored electrical / thermal energy is converted into heat in the elements of the discharge circuit. electric energy and only a one-time effect of the forces of the electric field on the excited elastic oscillations, as well as the large noTeipH energy on the charging resistor are significant shortcomings Kami of this ul.avnukovogo reiiepaTOpa.

The proposed ultrasonic generator differs from that known in that, in order to improve the excitation conditions of the elastic oscillations and increase the EQF. generator, it has a switching-lyristor (thyratron) zash: nthpobaiH inversely-connected diodes1, and between the junction point, the thyristor node with the cathode, diode diode, and the junction of the charging resistor with the pieser. Moreover, the pern of the electric oscillations of the discharge LC circuit is 0.75 of the period of free oscillations of the struts of the piezo generator.

FIG. 1 (the principle electrically selective diagram of the proposed ultrasound reHepa.Tpia is shown; Fig. 2c, the voltage and current diagrams of its circuits and (wall oscillations (deformation.mac) and piezoelectric dispenser (the dotted lines show .drotogramma nrotrotina).

The proposed ultrasound generator contains a col1 ut iruyu, TiHpiHiCTOp 1, charge resistor 2, nyzonezreobrazovatel 3, dnod 4 n, I1N | D | y1knV} JnT 5Prindkp of the target. Diagram.MM, where lj is the voltage across the thyristor anode / (cathode dyad 4) of the common (zero) wire, a / c is the current, and the capacitor 3, Uc is the tension between the plates (capacitors a) piezoelectric transducer 3, K - a surgeon aeformation {displacement of the walls) a piezocenter transformer 3 and / 7-current for, p - E | Resistor 2.

 ultra31v | y; a new generator is reduced to the following. With a saneftTOM thyristor 1 from the source of the lithium; through the resistor 2, piez01P, reversal 3, receiver 3,; na1; r1L | willow electric energy is charged. At the same time, under the influence of the forces of the electric ion, deformation of the body occurs: a piezoelectric transducer, a razovatel 3 and a part of the electrical energy and form the iaiadiadial ygeh ayi energy. Pr, and the posting of the control and the control module: the thyristor electrolyte / the latter unlocks (closes) the discharge circuit of the piezotransducer 3. Ta; K with .moment / i co. Mmutation: and a closed LC-circuit is formed ,, in iKOTOpoiM, the oscillatory process associated with the change in voltage on the covers of piezotransformer 3 and the excitation of elastic oscillations in the body of the latter. At the time tz, when the current in the LC- circuit is close, to the bullet and the piezoelectric transducer 3 N ope r, the thyristor J is taken away. During the ti-12 of the unlocked state of THpHCTqpa 1, the laser is the first (the half-period of oscillations in the LC circuit, in which: The diode 4 diode 4 is opened, the diode 4 is opened, the LC circuit is closed again, and a second half-oscillation period occurs. At the moment / 3, the repeated reloader of the neutralizer 3 m current through diode 4 ends near .01K to zero, the circuit of the LC circuit is broken. I eat the i-t commutator. And there is a period of electrical oscillations: it is in LC-iKOiH.Tiype, under which the influence of a synergy is no. It is his changing variable, and between the lining of the piezoelectric transducer, the recipient 3

ynipyr.H.x is excited: oscillations of the inner wall of ultrasonic waves into the surrounding medium. Subsequently, the solazole transformer 3 is recharged until the power source, power supply, and from the moment (4) the next sync comes to the bottom: the stimulating cycle again (repeats.

P remesh. And z obreetn

An ultrasonic hetero-generator containing 1Co-mm1; T | AND, a thyristor (thyratron), charging resistor and piezotransducer, characterized in that, in order to improve the conditions for the excitation of the piezoelectric generator and the catcher. generator, it has a shunti | p tyr, an optically connected diode, and between the point of connection of the anode of the thyristor with the cathode diode and the connection point of the charging resistor with the plus face of the Zhelezobreb) azovate. , Rio.da electrically oscillations formed by the LC - contour. to the period of elastic oscillations. Pnzo Ravo 0.75.

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