CN217643173U - Power supply circuit for ultrasonic device - Google Patents
Power supply circuit for ultrasonic device Download PDFInfo
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- CN217643173U CN217643173U CN202221709531.4U CN202221709531U CN217643173U CN 217643173 U CN217643173 U CN 217643173U CN 202221709531 U CN202221709531 U CN 202221709531U CN 217643173 U CN217643173 U CN 217643173U
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Abstract
The utility model belongs to the technical field of the ultrasonication technique and specifically relates to indicate a power supply circuit for ultrasonic device, including power module, rectifier module and contravariant module, power module is used for exporting the alternating current, and rectifier module is used for the alternating current rectification of power module output to direct current and transmits to the contravariant module, and the contravariant module is used for transmitting the direct current contravariant to the transducer of high frequency alternating current and external world, rectifier module is connected with protection module, and protection module includes diode and inductive switch, and the negative pole of diode is connected in rectifier module's output, and the positive pole of diode is connected in the inductor, and the inductor is used for controlling power module and rectifier module disconnection when receiving the electric current through diode transmission. The utility model discloses a diode reverse connection's mode is whether punctured in order to judge whether short circuit of rectifier module by the diode to direct control power and rectifier module disconnection have reached the protection effect when the short circuit.
Description
Technical Field
The utility model belongs to the technical field of the ultrasonication technique and specifically relates to indicate a power supply circuit for ultrasonic device.
Background
At present, a power supply used by an ultrasonic device is basically boosted by a rectification module and then reduced by an inverter circuit to output alternating current with proper frequency. When the rectifier module has a short-circuit fault, the inverter circuit and the transducer are easily damaged due to the fact that excessive voltage is continuously output. For this phenomenon, the existing methods are usually equipped with a suitable protection circuit, but such protection circuits are usually complex in structure, so that the whole circuit has many parts and the requirements for safety and heat dissipation are greater.
Disclosure of Invention
The utility model discloses problem to prior art provides a power supply circuit for ultrasonic device, can realize short-circuit protection through simple structure.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a pair of a power supply circuit for ultrasonic device, including power module, rectifier module and contravariant module, power module is used for exporting the alternating current, and rectifier module is used for the alternating current rectification of power module output to direct current and transmits to the contravariant module, and the contravariant module is used for transmitting the direct current contravariant to high frequency alternating current and to external transducer, rectifier module is connected with protection module, and protection module includes diode and inductive switch, and the negative pole of diode is connected in rectifier module's output, and the positive pole of diode is connected in the response piece, and the response piece is used for controlling power module and rectifier module disconnection when receiving the electric current through diode transmission.
In addition, the inductive switch is a normally closed relay, the inductive switch is provided with a low-voltage end and a high-voltage end, the anode of the diode is connected with the low-voltage end of the inductive switch, and the high-voltage end of the inductive switch is arranged between the power supply module and the rectification module;
the high-voltage end comprises a movable contact, a first fixed contact and a second fixed contact, the second fixed contact is provided with a magnet, the movable contact is connected with the power supply module, the first fixed contact is connected with the rectifying module, the second fixed contact is grounded, the movable contact is used for being in contact with the first fixed contact or the second fixed contact, and the low-voltage end is used for being closed when current input by the diode is received so as to drive the movable contact to be in contact with the second fixed contact.
In addition, a voltage stabilizing module is arranged between the diode and the rectifying module and comprises a primary voltage stabilizing circuit and a secondary voltage stabilizing circuit, the primary voltage stabilizing circuit is used for carrying out primary voltage reduction on direct current output by the rectifying module, the secondary voltage stabilizing circuit is used for carrying out secondary voltage reduction on the direct current subjected to primary voltage reduction, and the cathode of the diode is connected to the output end of the secondary voltage stabilizing circuit.
In addition, the rectification module comprises a bridge rectification circuit and a filter, the bridge rectification circuit is used for converting alternating current output by the power supply module into direct current, and the filter is used for filtering a direct current point and then outputting the direct current point to the inversion module.
In addition, the inversion module is a bridge type inversion circuit.
In addition, the inversion module is connected with a discharge module, and the discharge module is used for conducting and introducing the electric energy stored in the power circuit to the ground when the external energy conversion module stops working.
In addition, the discharge module comprises a discharge resistor and a discharge tube, the discharge tube is provided with a base electrode, a collector electrode and an emission collector, the base electrode is used for being externally connected with the controller, the collector electrode and the emitter electrode are respectively connected with the discharge resistor and the ground, and the discharge resistor is connected to the output end of the inverter module.
The utility model has the advantages that: the utility model discloses a diode reverse connection's mode is whether punctured in order to judge whether short circuit of rectifier module by the diode to direct control power and rectifier module disconnection have reached the protection effect when the short circuit.
Drawings
Fig. 1 is a schematic view of the present invention.
Reference numerals: 1-power supply module, 2-rectification module, 3-inversion module, 4-protection module, 5-discharge module, 6-transducer, 21-bridge rectifier circuit, 22-filter, 41-voltage stabilization module, 42-diode, 43-inductive switch, 44-low voltage end, 45-high voltage end, 46-primary voltage stabilizing circuit, 47-secondary voltage stabilizing circuit, 51-discharge resistor, 52-discharge tube, 451-movable contact, 452-first fixed contact, 453-second fixed contact.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides a power supply circuit for ultrasonic device, including power module 1, rectifier module 2 and contravariant module 3, power module 1 is used for exporting the alternating current, and rectifier module 2 is used for the alternating current rectification of power module 1 output to direct current and transmits to contravariant module 3, and contravariant module 3 is used for the direct current contravariant to high frequency alternating current and transmits to external transducer 6, rectifier module 2 is connected with protection module 4, and protection module 4 includes diode 42 and inductive switch 43, and diode 42's negative pole is connected in rectifier module 2's output, and diode 42's positive pole is connected in the inductor, and the inductor is used for controlling power module 1 and rectifier module 2 disconnection when receiving the electric current through diode 42 transmission.
In actual use, the power supply module 1 may be a switching power supply, and a transformer is provided between the inverter module 3 and the transducer 6.
The utility model discloses the theory of operation as follows: the power supply module 1 (usually a component connected with a mains supply) outputs alternating current to the rectification module 2, the alternating current is rectified into direct current through the rectification module 2 and then is transmitted to the inversion module 3, the inversion module 3 inverts the direct current into high-frequency alternating current and outputs the high-frequency alternating current to the energy converter 6, and at the moment, because the cathode of the diode 42 is connected to the rectification module 2 through the voltage stabilizing module 41, the diode 42 is in a blocking state in a normal state; when rectifier module 2 is because of the short circuit in certain position, diode 42 can be punctured backward and switch on to let inductive switch 43 triggered, control power module 1 disconnection and realize right the utility model discloses a protection.
In this embodiment, the inductive switch 43 is a normally closed relay, the inductive switch 43 has a low voltage end 44 and a high voltage end 45, the anode of the diode 42 is connected to the low voltage end 44 of the inductive switch 43, and the high voltage end 45 of the inductive switch 43 is disposed between the power supply module 1 and the rectifier module 2;
the high voltage terminal 45 includes a movable contact 451, a first fixed contact 452, and a second fixed contact 453, the second fixed contact 453 is provided with a magnet, the movable contact 451 is connected to the power supply module 1, the first fixed contact 452 is connected to the rectifying module 2, the second fixed contact 453 is grounded, the movable contact 451 is configured to contact with the first fixed contact 452 or the second fixed contact 453, and the low voltage terminal 44 is configured to close to drive the movable contact 451 to contact with the second fixed contact 453 when receiving a current input from the diode 42.
When starting, the operator controls the action of the movable contact 451 to make the movable contact 451 contact with and hold the first fixed contact 452; when short circuit occurs, the diode 42 is broken down, so that current enters the low-voltage end 44 through the diode 42, the low-voltage end 44 is controlled to be closed, the movable contact 451 is driven to be in contact with the second fixed contact 453, and the movable contact 451 is attracted by the second fixed contact 453 to ensure that the power supply module 1 is in a grounding state, so that power supply for the rectifier module 2 is avoided. Because the diode 42 is powered off after the instant of breakdown, the diode 42 can still recover after the power off, thereby achieving the effect of multiple protection.
In this embodiment, a voltage stabilizing module 41 is disposed between the diode 42 and the rectifying module 2, the voltage stabilizing module 41 includes a first-stage voltage stabilizing circuit 46 and a second-stage voltage stabilizing circuit 47, the first-stage voltage stabilizing circuit 46 is configured to perform a first voltage reduction on the dc power output by the rectifying module 2, the second-stage voltage stabilizing circuit 47 is configured to perform a second voltage reduction on the dc power subjected to the first voltage reduction, and a cathode of the diode 42 is connected to an output end of the second-stage voltage stabilizing circuit 47.
Through the mode of second grade step-down for the voltage at diode 42 both ends is lower, in order to guarantee that diode 42 is in under normal condition and cuts to the state, and when voltage appears in the twinkling of an eye normal fluctuation, also can not trigger diode 42 by mistake, has promoted the utility model discloses a reliability. The first voltage stabilizing circuit and the second voltage stabilizing circuit are both conventional circuits, and are not described herein again.
In this embodiment, the rectifier module 2 includes a bridge rectifier circuit 21 and a filter 22, the bridge rectifier circuit 21 is configured to convert the ac power output by the power supply module 1 into dc power, and the filter 22 is configured to filter a dc point and output the dc point to the inverter module 3, so as to ensure stable output current. Specifically, the filter 22 may be a Π -type filter circuit.
In this embodiment, the inverter module 3 is a bridge inverter circuit.
In this embodiment, the inverter module 3 is connected to a discharging module 5, and the discharging module 5 is configured to be turned on when the external energy conversion module stops operating and to introduce the electric energy stored in the power circuit to the ground.
In practical use, the discharge module 5 includes a discharge resistor 51 and a discharge tube 52, the discharge tube 52 has a base, a collector and an emitter, the base is used for connecting to an external controller, the collector and the emitter are respectively connected to the discharge resistor 51 and ground, and the discharge resistor 51 is connected to the output end of the inverter module 3. When the utility model discloses the transducer 6 stop work of supplying power, the utility model discloses control discharge tube 52 and open in the outage simultaneous control, let the utility model discloses the electric energy of internal storage exports to ground through discharge resistance 51 and discharge tube 52 to protected the utility model discloses an each component.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention is disclosed in the above description in terms of preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art will be able to make any changes or modifications to equivalent embodiments without departing from the scope of the present invention, and all the technical solutions of the present invention are within the scope of the present invention.
Claims (7)
1. The utility model provides a power supply circuit for ultrasonic device, includes power module, rectifier module and contravariant module, and power module is used for exporting the alternating current, and rectifier module is used for the alternating current rectification of power module output to direct current and transmits to the contravariant module, and the contravariant module is used for the direct current contravariant to high frequency alternating current and transmits to external transducer, its characterized in that: the rectifier module is connected with a protection module, the protection module comprises a diode and an induction switch, the cathode of the diode is connected to the output end of the rectifier module, the anode of the diode is connected to an induction piece, and the induction piece is used for controlling the power supply module to be disconnected from the rectifier module when receiving current transmitted by the diode.
2. The power supply circuit for an ultrasonic device according to claim 1, wherein: the inductive switch is a normally closed relay and is provided with a low-voltage end and a high-voltage end, the anode of the diode is connected with the low-voltage end of the inductive switch, and the high-voltage end of the inductive switch is arranged between the power supply module and the rectification module;
the high-voltage end comprises a movable contact, a first fixed contact and a second fixed contact, the second fixed contact is provided with a magnet, the movable contact is connected to the power supply module, the first fixed contact is connected to the rectifier module, the second fixed contact is grounded, the movable contact is used for being in contact with the first fixed contact or the second fixed contact, and the low-voltage end is used for being closed to drive the movable contact to be in contact with the second fixed contact when receiving current input by the diode.
3. The power supply circuit for an ultrasonic device according to claim 1, characterized in that: a voltage stabilizing module is arranged between the diode and the rectifying module and comprises a first-stage voltage stabilizing circuit and a second-stage voltage stabilizing circuit, the first-stage voltage stabilizing circuit is used for carrying out primary voltage reduction on direct current output by the rectifying module, the second-stage voltage stabilizing circuit is used for carrying out secondary voltage reduction on the direct current subjected to primary voltage reduction, and the cathode of the diode is connected to the output end of the second-stage voltage stabilizing circuit.
4. The power supply circuit for an ultrasonic device according to claim 1, characterized in that: the rectification module comprises a bridge rectification circuit and a filter, the bridge rectification circuit is used for converting alternating current output by the power supply module into direct current, and the filter is used for filtering a direct current point and then outputting the direct current point to the inversion module.
5. The power supply circuit for an ultrasonic device according to claim 1, characterized in that: the inversion module is a bridge type inversion circuit.
6. The power supply circuit for an ultrasonic device according to claim 1, characterized in that: the inverter module is connected with a discharge module, and the discharge module is used for conducting and introducing the electric energy stored in the power circuit to the ground when the external energy conversion module stops working.
7. The power supply circuit for an ultrasonic device according to claim 6, wherein: the discharge module comprises a discharge resistor and a discharge tube, the discharge tube is provided with a base electrode, a collector electrode and an emission set, the base electrode is used for being externally connected with a controller, the collector electrode and the emission electrode are respectively connected with the discharge resistor and the ground, and the discharge resistor is connected to the output end of the inversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221709531.4U CN217643173U (en) | 2022-07-04 | 2022-07-04 | Power supply circuit for ultrasonic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221709531.4U CN217643173U (en) | 2022-07-04 | 2022-07-04 | Power supply circuit for ultrasonic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217643173U true CN217643173U (en) | 2022-10-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221709531.4U Active CN217643173U (en) | 2022-07-04 | 2022-07-04 | Power supply circuit for ultrasonic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217643173U (en) |
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2022
- 2022-07-04 CN CN202221709531.4U patent/CN217643173U/en active Active
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