CN203104398U - Power ultrasonic driver - Google Patents

Abstract

The utility model relates to an ultrasonic driver and particularly relates to a power ultrasonic driver. With the adoption of the power ultrasonic driver disclosed by the utility model, the problem of bad working reliability of the existing separately-excited ultrasonic driver is solved. The power ultrasonic driver comprises a drive circuit and a control circuit, wherein the drive circuit comprises a rectifying-filtering circuit, a three-terminal voltage-stabilized power supply, a separately-excited IC (integrated circuit), a power switch, a transformer, a filter capacitor, tuning inductor, a sampling resistor, and a plurality of energy converters; the control circuit comprises a phase discriminator, a field-effect transistor, a timing capacitor, an integrating capacitor, a timing resistor, an integrating resistor, a potentiometer and a switch; the output end of the rectifying-filtering circuit is connected with the power input end of the power switch; the output end of the three-terminal voltage-stabilized power supply is connected with the power input end of the separately-excited IC; and the signal output end of the separately-excited IC is connected with the signal input end of the power switch. The power ultrasonic driver disclosed by the utility model is suitable for ultrasonic drive.

Description

The power ultrasonic driver

Technical field

The utility model relates to ultrasonic drivers, specifically is a kind of power ultrasonic driver.

Background technology

Under the prior art condition, ultrasonic drivers mainly is divided into auto-excitation type ultrasonic drivers and independent-excited ultrasonic drivers.Wherein, during the auto-excitation type ultrasonic drivers is only applicable to drive usually, the small-power transducer.Drive high-power transducer though the independent-excited ultrasonic drivers is applicable to, it be difficult to guarantee the starting of oscillation simultaneously of each transducer, thereby its functional reliability is relatively poor because self structure is limit.Based on this, be necessary to invent a kind of brand-new independent-excited ultrasonic drivers, to solve the problem of existing independent-excited ultrasonic drivers functional reliability difference.

Summary of the invention

The utility model provides a kind of power ultrasonic driver in order to solve the problem of existing independent-excited ultrasonic drivers functional reliability difference.

The utility model is to adopt following technical scheme to realize: the power ultrasonic driver comprises drive circuit and control circuit; Described drive circuit comprises current rectifying and wave filtering circuit, three-terminal voltage-stabilizing power supply, it swashs IC, power switch, transformer, filter capacitor, tuning coil, sample resistance and several transducers; Described control circuit comprises phase discriminator, field effect transistor, timing capacitor, integrating capacitor, timing resistor, integrating resistor, potentiometer and switch; Wherein, the output of current rectifying and wave filtering circuit is connected with the power input of power switch; The output of three-terminal voltage-stabilizing power supply is connected with the power input that it swashs IC; The signal output part that it swashs IC is connected with the signal input part of power switch; The signal output part of power switch is by a winding earth of transformer; One end of filter capacitor is connected with the output of current rectifying and wave filtering circuit, other end ground connection; All successively by the secondary winding ground connection of tuning coil, transformer, the other end is all by sample resistance ground connection for one end of each transducer; A signal input part of phase discriminator is connected with the signal output part that it swashs IC, and another signal input part is connected with the other end of each transducer respectively; The signal output part of phase discriminator is connected with the grid of field effect transistor; The drain electrode of field effect transistor is connected with the signal input part that it swashs IC; The source ground of field effect transistor; One end of timing capacitor is connected other end ground connection with the signal input part that it swashs IC; One end of timing resistor is connected other end ground connection with the signal input part that it swashs IC; The signal output part that one end of integrating capacitor swashs IC by integrating resistor and it is connected other end ground connection; The signal output part that a stiff end of potentiometer swashs IC by integrating resistor and it is connected another stiff end ground connection; The sliding end of potentiometer is connected with the grid of field effect transistor by switch.

During work, the input of current rectifying and wave filtering circuit is electrically connected with external communication, the input of three-terminal voltage-stabilizing power supply is connected with outside direct current.The concrete course of work is as follows: the external communication electricity is used for powering to power switch after current rectifying and wave filtering circuit carries out rectification, filtering.Outside direct current is used for swashing the IC power supply to it after the three-terminal voltage-stabilizing power supply carries out voltage stabilizing.It swashs IC output switching pulse signal, is used for driving power switch power output signal.Power signal successively through transformer, tuning coil carry out transformation, tuning after, be used to drive each transducer starting of oscillation.In this process, phase discriminator is gathered switching pulse signal and power signal in real time, and switching pulse signal and power signal are compared in real time, draws phase signal.Phase signal is loaded on the grid of field effect transistor in real time, makes the grid of field effect transistor produce bias voltage.The while Closing Switch, integrating capacitor and integrating resistor are common gathers switching pulse signal in real time, and switching pulse signal is converted to the triangular pulse signal in real time.The triangular pulse signal is loaded on the grid of field effect transistor in real time through potentiometer, switch successively, makes the grid voltage of field effect transistor produce certain deviation from linearity near bias voltage.This deviation from linearity can change the peripheral timing resistor resistance that it swashs IC, and then the frequency of change switching pulse signal, make the frequency of switching pulse signal drop on simultaneously in the surge frequency range of each transducer, and then make the frequency of power signal drop on simultaneously in the surge frequency range of each transducer, thereby guarantee the starting of oscillation simultaneously of each transducer.Based on said process, the utility model efficiently solves the problem of existing independent-excited ultrasonic drivers functional reliability difference.

The utility model is rational in infrastructure, design is ingenious, efficiently solves the problem of existing independent-excited ultrasonic drivers functional reliability difference, is applicable to ultrasound-driven.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

The power ultrasonic driver comprises drive circuit and control circuit; Described drive circuit comprises current rectifying and wave filtering circuit T1, three-terminal voltage-stabilizing power supply T2, it swashs ICT3, power switch T4, transformer T5, filter capacitor C1, tuning coil L1, sample resistance R1 and several transducers M1; Described control circuit comprises phase discriminator T6, field effect transistor Q1, timing capacitor C2, integrating capacitor C3, timing resistor R2, integrating resistor R3, potentiometer R4 and switch S 1; Wherein, the output of current rectifying and wave filtering circuit T1 is connected with the power input of power switch T4; The output of three-terminal voltage-stabilizing power supply T2 is connected with the power input that it swashs ICT3; The signal output part that it swashs ICT3 is connected with the signal input part of power switch T4; The signal output part of power switch T4 is by the winding earth of transformer T5; The end of filter capacitor C1 is connected other end ground connection with the output of current rectifying and wave filtering circuit T1; All successively by the secondary winding ground connection of tuning coil L1, transformer T5, the other end is all by sample resistance R1 ground connection for the end of each transducer M1; The signal input part of phase discriminator T6 is connected with the signal output part that it swashs ICT3, and another signal input part is connected with the other end of each transducer M1 respectively; The signal output part of phase discriminator T6 is connected with the grid of field effect transistor Q1; The drain electrode of field effect transistor Q1 is connected with the signal input part that it swashs ICT3; The source ground of field effect transistor Q1; The end of timing capacitor C2 is connected other end ground connection with the signal input part that it swashs ICT3; The end of timing resistor R2 is connected other end ground connection with the signal input part that it swashs ICT3; The end of integrating capacitor C3 is connected other end ground connection by integrating resistor R3 with the signal output part that it swashs ICT3; The stiff end of potentiometer R4 is connected another stiff end ground connection by integrating resistor R3 with the signal output part that it swashs ICT3; The sliding end of potentiometer R4 is connected with the grid of field effect transistor Q1 by switch S 1.

Claims (1)

1. a power ultrasonic driver is characterized in that: comprise drive circuit and control circuit; Described drive circuit comprises current rectifying and wave filtering circuit (T1), three-terminal voltage-stabilizing power supply (T2), it swashs IC(T3), power switch (T4), transformer (T5), filter capacitor (C1), tuning coil (L1), sample resistance (R1) and several transducers (M1); Described control circuit comprises phase discriminator (T6), field effect transistor (Q1), timing capacitor (C2), integrating capacitor (C3), timing resistor (R2), integrating resistor (R3), potentiometer (R4) and switch (S1); Wherein, the output of current rectifying and wave filtering circuit (T1) is connected with the power input of power switch (T4); IC(T3 is swashed in the output of three-terminal voltage-stabilizing power supply (T2) and it) power input be connected; It swashs IC(T3) signal output part be connected with the signal input part of power switch (T4); The signal output part of power switch (T4) is by a winding earth of transformer (T5); One end of filter capacitor (C1) is connected other end ground connection with the output of current rectifying and wave filtering circuit (T1); All successively by the secondary winding ground connection of tuning coil (L1), transformer (T5), the other end is all by sample resistance (R1) ground connection for one end of each transducer (M1); Signal input part of phase discriminator (T6) swashs IC(T3 with it) signal output part be connected, another signal input part is connected with the other end of each transducer (M1) respectively; The signal output part of phase discriminator (T6) is connected with the grid of field effect transistor (Q1); IC(T3 is swashed in the drain electrode of field effect transistor (Q1) and it) signal input part be connected; The source ground of field effect transistor (Q1); IC(T3 is swashed in one end of timing capacitor (C2) and it) signal input part be connected other end ground connection; IC(T3 is swashed in one end of timing resistor (R2) and it) signal input part be connected other end ground connection; One end of integrating capacitor (C3) is by the sharp IC(T3 in integrating resistor (R3) and its) signal output part be connected other end ground connection; A stiff end of potentiometer (R4) is by the sharp IC(T3 in integrating resistor (R3) and its) signal output part be connected another stiff end ground connection; The sliding end of potentiometer (R4) is connected with the grid of field effect transistor (Q1) by switch (S1).