CN116346091A - Radio frequency output circuit for radio frequency beauty instrument and electronic equipment - Google Patents

Radio frequency output circuit for radio frequency beauty instrument and electronic equipment Download PDF

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Publication number
CN116346091A
CN116346091A CN202310354074.4A CN202310354074A CN116346091A CN 116346091 A CN116346091 A CN 116346091A CN 202310354074 A CN202310354074 A CN 202310354074A CN 116346091 A CN116346091 A CN 116346091A
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radio frequency
electrically connected
output
circuit
resistor
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张恒
汪小杰
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Shenzhen Dachi Communication Co ltd
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Shenzhen Dachi Communication Co ltd
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/80—Generating trains of sinusoidal oscillations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Health & Medical Sciences (AREA)
  • Power Engineering (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
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Abstract

The invention discloses a radio frequency output circuit and electronic equipment for a radio frequency beauty instrument, wherein the radio frequency output circuit for the radio frequency beauty instrument comprises a driving circuit, an amplifying and converting circuit and an output circuit, wherein: the first end of the driving circuit is connected with the first end of the amplifying and converting circuit; the second end of the amplifying and converting circuit is connected with the first end of the output circuit; the radio frequency output circuit for the radio frequency beauty instrument is used for carrying out power amplification and filtering treatment on the PWM signal with the input phase difference of 180 degrees so as to output a radio frequency signal with a sine waveform. Therefore, the invention is beneficial to reducing the complexity of the circuit and occupying the space of the circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.

Description

Radio frequency output circuit for radio frequency beauty instrument and electronic equipment
Technical Field
The invention relates to the technical field of radio frequency, in particular to a radio frequency output circuit for a radio frequency beauty instrument and electronic equipment.
Background
Most of radio frequency circuits of the prior radio frequency cosmetic instruments use a magnetic core of a transformer to boost power, and the circuit has the defects of high cost, low radio frequency conversion efficiency, poor reliability, large circuit scale and the like due to the existence of the magnetic core of the transformer. Therefore, it is necessary to provide a radio frequency output circuit for a radio frequency cosmetic instrument, so as to reduce the complexity of the circuit and occupy the space of the circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.
Disclosure of Invention
The invention aims to solve the technical problem of providing a radio frequency output circuit for a radio frequency beauty instrument, which is used for reducing the complexity of the circuit and occupying the space of a circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.
In order to solve the above technical problems, a first aspect of the present invention discloses a radio frequency output circuit for a radio frequency cosmetic instrument, which comprises
The radio frequency output circuit for the radio frequency beauty instrument comprises a driving circuit, an amplifying and converting circuit and an output circuit, wherein:
the first end of the driving circuit is connected with the first end of the amplifying and converting circuit; the second end of the amplifying and converting circuit is connected with the first end of the output circuit;
the radio frequency output circuit for the radio frequency beauty instrument is used for carrying out power amplification and filtering treatment on the PWM signal with the input phase difference of 180 degrees so as to output a radio frequency signal with a sine waveform.
As an optional implementation manner, in the first aspect of the present invention, the driving circuit is configured to drive the amplifying and converting circuit to operate; the driving circuit comprises a MOS tube driving chip, a first signal input end, a second signal input end, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a first capacitor; wherein,,
the first end of the first resistor is electrically connected with the first end of the third resistor and the first end of the MOS tube driving chip respectively, and the second end of the first resistor is electrically connected with the first signal input end; the first end of the second resistor is electrically connected with the first end of the fourth resistor and the second end of the MOS tube driving chip respectively, and the second end of the second resistor is electrically connected with the second signal input end; the third end of the MOS tube driving chip is electrically connected with the first end of the sixth resistor and the first end of the eighth resistor respectively, and the fourth end of the MOS tube driving chip is electrically connected with the first end of the first capacitor; the third end of the MOS tube driving chip is electrically connected with the first end of the fifth resistor and the first end of the seventh resistor respectively; the second end of the fifth resistor, the second end of the sixth resistor, the second end of the seventh resistor and the second end of the eighth resistor are all electrically connected with the amplifying and converting circuit; the second end of the third resistor, the second end of the fourth resistor and the second end of the first capacitor are grounded.
As an alternative implementation manner, in the first aspect of the present invention, the amplifying and converting circuit includes two sets of signal components for performing power amplification and high-frequency filtering processing on signals;
each signal component comprises an MOS tube and an inductor;
the output of the amplifying and converting circuit is two sine signals; the two sinusoidal signals have different polarities and are not phase overlapping.
As an optional implementation manner, in the first aspect of the present invention, the MOS transistors in the two sets of signal components are alternately opened and closed; the time for alternately opening the MOS tubes in the signal component is positively correlated with the duty ratio of the PWM waves input into the driving circuit.
As an optional implementation manner, in the first aspect of the present invention, the amplifying and converting circuit includes a first MOS transistor, a second MOS transistor, a first intermediate output terminal, a second intermediate output terminal, a first inductor, a second inductor, a third inductor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a ninth resistor; wherein,,
the G end and the S end of the first MOS tube are electrically connected with the driving circuit, and the D end of the first MOS tube is electrically connected with the first end of the first inductor and the first end of the fourth capacitor respectively; the G end of the second MOS tube is electrically connected with the driving circuit, the D end of the second MOS tube is respectively and electrically connected with the first end of the second inductor and the first end of the fifth capacitor, and the S end of the second MOS tube, the driving circuit and the first end of the ninth resistor are all grounded; the second end of the first inductor is connected with the second end of the second inductor and the first end of the third inductor respectively; the second end of the third inductor is electrically connected with the first end of the second capacitor and the first end of the third capacitor respectively; the second end of the fourth capacitor is electrically connected with the first end of the first middle output end; the second end of the fifth capacitor is electrically connected with the first end of the second middle output end; the second end of the first intermediate output end and the second end of the second intermediate output end are electrically connected with the output circuit; the second end of the second capacitor, the second end of the third capacitor and the second end of the ninth resistor are all grounded.
In an optional implementation manner, in a first aspect of the present invention, a G end of the first MOS transistor is electrically connected to a second end of the fifth resistor in the driving circuit, and an S end of the first MOS transistor is electrically connected to a second end of the eighth resistor in the driving circuit; the G end of the second MOS tube is electrically connected with the second end of the sixth resistor in the driving circuit, and the S end of the second MOS tube is electrically connected with the second end of the seventh resistor in the driving circuit.
As an alternative embodiment, in the first aspect of the present invention, the output circuit includes a first output circuit and a second output circuit;
the first output circuit is used for conducting circuit isolation when the amplifying and converting circuit conducts power amplification and high-frequency filtering processing, and outputting two paths of radio frequency signals;
the second output circuit is used for splitting the radio frequency signal output by the first output circuit into 10 paths of radio frequency wave arrival metal probes with alternating positive and negative waveforms.
As an optional implementation manner, in the first aspect of the present invention, the first output circuit includes a first radio frequency input terminal, a second radio frequency input terminal, a first optocoupler switch, a second optocoupler switch, a first radio frequency output terminal, a second radio frequency output terminal, a first driving control terminal, a second driving control terminal, a first variable frequency output terminal, and a second variable frequency output terminal; wherein,,
a first end of the first radio frequency input end is electrically connected with a second end of a first middle output end in the amplifying driving circuit, and a second end of the first radio frequency input end is electrically connected with a first end of the first optical coupler switch; the second end of the first optical coupler switch is electrically connected with the first variable frequency output end, the third end of the first optical coupler switch is electrically connected with the first driving control end, and the fourth end of the first optical coupler switch is electrically connected with the first radio frequency output end; the first end of the second radio frequency input end is electrically connected with the second end of the second middle output end in the amplifying driving circuit, and the second end of the second radio frequency input end is electrically connected with the first end of the second optical coupler switch; the second end of the second optical coupler switch is electrically connected with the second variable frequency output end, the third end of the second optical coupler switch is electrically connected with the second driving control end, and the fourth end of the second optical coupler switch is electrically connected with the second radio frequency output end.
In an optional implementation manner, in the first aspect of the present invention, the second output circuit includes a third radio frequency input terminal, a fourth radio frequency input terminal, a third opto-coupler switch, a fourth opto-coupler switch, a fifth opto-coupler switch, a sixth opto-coupler switch, a seventh opto-coupler switch, an eighth opto-coupler switch, a ninth opto-coupler switch, a tenth opto-coupler switch, an eleventh opto-coupler switch, a twelfth opto-coupler switch, a third driving control terminal, a fourth driving control terminal, a fifth driving control terminal, a sixth driving control terminal, a seventh driving control terminal, an eighth driving control terminal, a ninth driving control terminal, a tenth driving control terminal, an eleventh driving control terminal, a twelfth driving control terminal, a first radio frequency output terminal, a second radio frequency output terminal, a third radio frequency output terminal, a fourth radio frequency output terminal, a fifth radio frequency output terminal, a sixth radio frequency output terminal, a seventh radio frequency output terminal, an eighth radio frequency output terminal, a ninth radio frequency output terminal, and a tenth radio frequency output terminal; wherein,,
the first end of the third radio frequency input end and the first end of the fourth radio frequency input end are respectively and electrically connected with the second end of the first radio frequency output end and the second end of the second radio frequency output end; the first end, the second end and the third end of the third optical coupler switch are respectively and electrically connected with the second end of the third radio frequency input end, the first radio frequency wave output end and the third driving control end; the first end, the second end and the third end of the fourth optical coupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the second radio frequency wave output end and the fourth driving control end; the first end, the second end and the third end of the fifth optical coupler switch are respectively and electrically connected with the second end of the third radio frequency input end, the third radio frequency wave output end and the fifth driving control end; the first end, the second end and the third end of the sixth optical coupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the fourth radio frequency wave output end and the sixth driving control end; the first end, the second end and the third end of the seventh optical coupler switch are respectively and electrically connected with the second end, the fifth radio frequency wave output end and the seventh driving control end of the third radio frequency input end; the first end, the second end and the third end of the eighth optocoupler switch are respectively and electrically connected with the second end, the sixth radio frequency wave output end and the eighth driving control end of the fourth radio frequency input end; the first end, the second end and the third end of the ninth optocoupler switch are respectively and electrically connected with the second end, the seventh radio frequency wave output end and the ninth driving control end of the third radio frequency input end; the first end, the second end and the third end of the tenth optical coupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the eighth radio frequency wave output end and the tenth driving control end; the first end, the second end and the third end of the eleventh optocoupler switch are respectively and electrically connected with the second end of the third radio frequency input end, the ninth radio frequency wave output end and the eleventh driving control end; the first end, the second end and the third end of the twelfth optocoupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the tenth radio frequency wave output end and the twelfth driving control end.
The second aspect of the invention discloses an electronic device, which is characterized in that the electronic device comprises the radio frequency output circuit for the radio frequency beauty instrument in any one of the first aspect.
The implementation of the invention has the following beneficial effects:
the invention discloses a radio frequency output circuit for a radio frequency beauty instrument, which comprises a driving circuit, an amplifying and converting circuit and an output circuit, wherein: the first end of the driving circuit is connected with the first end of the amplifying and converting circuit; the second end of the amplifying and converting circuit is connected with the first end of the output circuit; the radio frequency output circuit for the radio frequency beauty instrument is used for carrying out power amplification and filtering treatment on the PWM signal with the input phase difference of 180 degrees so as to output a radio frequency signal with a sine waveform. Therefore, the invention is beneficial to reducing the complexity of the circuit and occupying the space of the circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a radio frequency output circuit for a radio frequency cosmetic instrument according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a radio frequency output circuit for a radio frequency cosmetic instrument according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a first output circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a second output circuit according to an embodiment of the present invention.
Detailed Description
For a better understanding and implementation, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, unless explicitly specified and limited otherwise, the term "electrically connected" in the description of the invention and in the claims and in the above-mentioned figures should be understood in a broad sense, for example, as a fixed electrical connection, as a removable electrical connection, or as an integral electrical connection; can be mechanically and electrically connected or can be mutually communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Furthermore, the terms first, second and the like in the description and in the claims of the invention and in the foregoing figures, are used for distinguishing between different objects and not for describing a particular sequential order, and are not intended to cover any exclusive inclusion. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of an rf output circuit for an rf cosmetic instrument according to an embodiment of the present invention, which can be applied to any load requiring voltage stabilization, and the embodiment of the present invention is not limited thereto. As shown in fig. 1, the radio frequency output circuit for the radio frequency cosmetic instrument comprises a driving circuit, an amplifying and converting circuit and an output circuit, wherein:
the first end of the driving circuit is connected with the first end of the amplifying and converting circuit; the second end of the amplifying and converting circuit is connected with the first end of the output circuit;
the radio frequency output circuit for the radio frequency beauty instrument is used for carrying out power amplification and filtering treatment on the PWM signal with the input phase difference of 180 degrees so as to output a radio frequency signal with a sine waveform.
It should be noted that, the PWM signal is a pulse width modulated signal, which may be output by a single chip microcomputer. Further, the 2 PWM signals inputted to the driving circuit are signals 180 ° out of phase, and the frequency and the width thereof are identical.
Therefore, the radio frequency output circuit for the radio frequency cosmetic instrument described in the first embodiment can reduce the complexity of the circuit and occupy the space of the circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.
Example two
Referring to fig. 2, as shown in fig. 2, fig. 2 is a schematic structural diagram of a radio frequency output circuit for a radio frequency cosmetic instrument according to another embodiment of the present invention, as shown in fig. 2, the driving circuit is used for driving the amplifying and converting circuit to work; thedrivingcircuitcomprisesaMOStubedrivingchip(U1),afirstsignalinputend(PWM-A),asecondsignalinputend(PWM-B),afirstresistor(R1),asecondresistor(R2),athirdresistor(R3),afourthresistor(R4),afifthresistor(R5),asixthresistor(R6),aseventhresistor(R7),aneighthresistor(R8)andafirstcapacitor(C1); wherein,,
thefirstendofthefirstresistor(R1)iselectricallyconnectedwiththefirstendofthethirdresistor(R3)andthefirstendoftheMOStubedrivingchip(U1)respectively,andthesecondendofthefirstresistor(R1)iselectricallyconnectedwiththefirstsignalinputend(PWM-A); the first end of the second resistor (R2) is electrically connected with the first end of the fourth resistor (R4) and the second end of the MOS tube driving chip (U1) respectively, and the second end of the second resistor (R2) is electrically connected with the second signal input end (PWM-B); the third end of the MOS tube driving chip (U1) is electrically connected with the first end of the sixth resistor (R6) and the first end of the eighth resistor (R8) respectively, and the fourth end of the MOS tube driving chip (U1) is electrically connected with the first end of the first capacitor (C1); the third end of the MOS tube driving chip (U1) is electrically connected with the first end of the fifth resistor (R5) and the first end of the seventh resistor (R7) respectively; the second end of the fifth resistor (R5), the second end of the sixth resistor (R6), the second end of the seventh resistor (R7) and the second end of the eighth resistor (R8) are all electrically connected with the amplifying and converting circuit; the second end of the third resistor (R3), the second end of the fourth resistor (R4) and the second end of the first capacitor (C1) are grounded.
It should be noted that, for other descriptions of the rf output circuit for the rf cosmetic apparatus, please refer to the related descriptions in the above embodiment, and the descriptions are omitted herein.
Example III
Referring to fig. 2, fig. 2 is a schematic structural diagram of a radio frequency output circuit for a radio frequency cosmetic instrument according to another embodiment of the present invention, and as shown in fig. 2, the amplifying and converting circuit includes two signal components for performing power amplification and high frequency filtering on signals;
each signal component comprises an MOS tube and an inductor;
the output of the amplifying and converting circuit is two sine signals; the two sinusoidal signals are of different polarity and are non-overlapping in phase.
In yet another alternative embodiment, the MOS transistors in the two sets of signal components are alternately turned on and off; the time that the MOS tube in the signal component is opened alternately is positively correlated with the duty ratio of the PWM wave input to the driving circuit.
In yet another alternative embodiment, the amplifying and converting circuit includes Sub>A first MOS transistor (Q1), sub>A second MOS transistor (Q2), sub>A first intermediate output (RF-Sub>A), sub>A second intermediate output (RF-B), sub>A first inductor (L1), sub>A second inductor (L2), sub>A third inductor (L3), sub>A second capacitor (C2), sub>A third capacitor (C3), sub>A fourth capacitor (C4), sub>A fifth capacitor (C5), and Sub>A ninth resistor (R9); wherein,,
the end G and the end S of the first MOS tube (Q1) are electrically connected with a driving circuit, and the end D of the first MOS tube (Q1) is electrically connected with the first end of the first inductor (L1) and the first end of the fourth capacitor (C4) respectively; the end G of the second MOS tube (Q2) is electrically connected with the driving circuit, the end D of the second MOS tube (Q2) is respectively electrically connected with the first end of the second inductor (L2) and the first end of the fifth capacitor (C5), and the end S of the second MOS tube (Q2), the driving circuit and the first end of the ninth resistor (R9) are grounded; the second end of the first inductor (L1) is respectively connected with the second end of the second inductor (L2) and the first end of the third inductor (L3); the second end of the third inductor (L3) is electrically connected with the first end of the second capacitor (C2) and the first end of the third capacitor (C3) respectively; the second end of the fourth capacitor (C4) is electrically connected with the first end of the first intermediate output end (RF-A); the second end of the fifth capacitor (C5) is electrically connected to the first end of the second intermediate output (RF-B); the second end of the first intermediate output end (RF-A) and the second end of the second intermediate output end (RF-B) are electrically connected with the output circuit; the second end of the second capacitor (C2), the second end of the third capacitor (C3) and the second end of the ninth resistor (R9) are all grounded
The second inductor (L2) is not connected to the fourth capacitor (C4). Further, the second inductor (L2) is connected to the drain (D end) of the second MOS transistor (Q2).
In yet another alternative embodiment, the G end of the first MOS transistor (Q1) is electrically connected to the second end of the fifth resistor (R5) in the driving circuit, and the S end of the first MOS transistor (Q1) is electrically connected to the second end of the eighth resistor (R8) in the driving circuit; the G end of the second MOS tube (Q2) is electrically connected with the second end of a sixth resistor (R6) in the driving circuit, and the S end of the second MOS tube (Q2) is electrically connected with the second end of a seventh resistor (R7) in the driving circuit.
For other descriptions of the rf output circuit for the rf cosmetic apparatus, please refer to the related descriptions in the first and second embodiments, and the descriptions are omitted herein.
The working principle of the radio frequency output circuit for the radio frequency beauty instrument in the embodiment of the invention is as follows:
according to the embodiment of the invention, when the first MOS tube (Q1) is opened and the second MOS tube (Q2) is closed, the first inductor (L1) discharges, the second inductor (L2) charges, and the first intermediate output end (RF-A) is output. When the second MOS tube (Q2) is opened and the first MOS tube (Q1) is closed, the second inductor (L2) discharges, the first inductor (L1) charges, and the second intermediate output end (RF-B) outputs. The time of alternately opening the first MOS tube (Q1) and the second MOS tube (Q2) is related to the duty ratio of the original PWM waveform, so that sine waveforms with different polarities can be accurately screened out from two paths of signals, and meanwhile, the phenomenon that two paths of inverted PWM signals are overlapped after being output does not exist, so that the output signals are disordered. And finally, outputting the waveform of the radio frequency signal from two output ports of the circuit, wherein one path is a positive waveform, and the other path is a negative waveform.
Therefore, the radio frequency output circuit for the radio frequency cosmetic instrument described in the third embodiment can reduce the complexity of the circuit and occupy the space of the circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.
Example IV
Referring to fig. 3 and 4, the output circuit includes a first output circuit and a second output circuit;
the first output circuit is used for conducting circuit isolation when the amplifying and converting circuit conducts power amplification and high-frequency filtering treatment, and outputting two paths of radio frequency signals;
the second output circuit is used for splitting the radio frequency signal output by the first output circuit into 10 paths of radio frequency waves with alternating positive and negative waveforms to the metal probe.
The number of the metal probes is an even number. Further, each 2 metal probes are 1 pair of probe groups. Each pair of probe groups is electrically connected with the second output circuit respectively so as to receive the output radio frequency waves with 180-degree phase difference. Further, the two paths of output radio frequency waves with 180 degrees of phase difference are combined together to form a complete radio frequency signal
Furthermore, the optocoupler switches of the first output circuit and the second output circuit can be used for controlling the on-off of signals.
In yet another alternative embodiment, the first output circuit includes a first rf input terminal, a second rf input terminal, a first optocoupler switch (Q22), a second optocoupler switch (Q23), a first rf output terminal (PART-a), a second rf output terminal (PART-B), a first drive control terminal (SW 12), a second drive control terminal (SW 13), a first variable frequency output terminal, and a second variable frequency output terminal; wherein,,
Sub>A first end of the first radio frequency input end is electrically connected with Sub>A second end of Sub>A first intermediate output end (RF-A) in the amplifying driving circuit, and Sub>A second end of the first radio frequency input end is electrically connected with Sub>A first end of Sub>A first opto-coupler switch (Q22); the second end of the first optocoupler switch (Q22) is electrically connected with the first variable frequency output end, the third end of the first optocoupler switch (Q22) is electrically connected with the first driving control end (SW 12), and the fourth end of the first optocoupler switch (Q22) is electrically connected with the first radio frequency output end (PART-A); the first end of the second radio frequency input end is electrically connected with the second end of the second intermediate output end (RF-B) in the amplifying driving circuit, and the second end of the second radio frequency input end is electrically connected with the first end of the second opto-coupler switch (Q23); the second end of the second optical coupler switch (Q23) is electrically connected with the second variable frequency output end, the third end of the second optical coupler switch (Q23) is electrically connected with the second driving control end (SW 13), and the fourth end of the second optical coupler switch (Q23) is electrically connected with the second radio frequency output end (PART-B).
The first driving control terminal (SW 12) and the second driving control terminal (SW 13) are connected to a driving chip for control.
It should be noted that the first variable frequency output terminal and the second variable frequency output terminal are connected to the dc/ac circuit.
In yet another alternative embodiment, the second output circuit includes a third radio frequency input terminal, a fourth radio frequency input terminal, a third opto-coupler switch (Q1), a fourth opto-coupler switch (Q2), a fifth opto-coupler switch (Q3), a sixth opto-coupler switch (Q4), a seventh opto-coupler switch (Q5), an eighth opto-coupler switch (Q6), a ninth opto-coupler switch (Q7), a tenth opto-coupler switch (Q8), an eleventh opto-coupler switch (Q9), a twelfth opto-coupler switch (Q10), a third drive control terminal (SW 0), a fourth drive control terminal (SW 1), a fifth drive control terminal (SW 2), a sixth drive control terminal (SW 3), a seventh drive control terminal (SW 4), an eighth drive control terminal (SW 5), a ninth drive control terminal (SW 6), a tenth drive control terminal (SW 7), an eleventh drive control terminal (SW 8), a twelfth drive control terminal (SW 9), a first radio frequency wave output terminal (ce-0), a second radio frequency output terminal (ce 1), a third radio frequency output terminal (ce-ce 2-ce output terminal (ce) and a fifth radio frequency output terminal (ce 2-ce output terminal (ce 4-ce) and a fifth radio frequency output terminal (ce 2-ce output terminal (ce 4), A tenth radio frequency wave output (FACE-9); wherein,,
the first end of the third radio frequency input end and the first end of the fourth radio frequency input end are respectively and electrically connected with the second end of the first radio frequency output end (PART-a) and the second end of the second radio frequency output end (PART-B); the first end, the second end and the third end of the third optical coupler switch (Q1) are respectively and electrically connected with the second end of the third radio frequency input end, the first radio frequency wave output end (FACE-0) and the third driving control end (SW 0); the first end, the second end and the third end of the fourth optical coupler switch (Q2) are respectively and electrically connected with the second end of the fourth radio frequency input end, the second radio frequency wave output end (FACE-1) and the fourth driving control end (SW 1); the first end, the second end and the third end of the fifth optical coupler switch (Q3) are respectively and electrically connected with the second end of the third radio frequency input end, the third radio frequency wave output end (FACE-2) and the fifth driving control end (SW 2); the first end, the second end and the third end of the sixth optical coupler switch (Q4) are respectively and electrically connected with the second end of the fourth radio frequency input end, the fourth radio frequency wave output end (FACE-3) and the sixth driving control end (SW 3); the first end, the second end and the third end of the seventh optocoupler switch (Q5) are respectively and electrically connected with the second end of the third radio frequency input end, the fifth radio frequency wave output end (FACE-4) and the seventh driving control end (SW 4); the first end, the second end and the third end of the eighth optocoupler switch (Q6) are respectively and electrically connected with the second end of the fourth radio frequency input end, the sixth radio frequency wave output end (FACE-5) and the eighth driving control end (SW 5); the first end, the second end and the third end of the ninth optocoupler switch (Q7) are respectively and electrically connected with the second end of the third radio frequency input end, the seventh radio frequency wave output end (FACE-6) and the ninth driving control end (SW 6); the first end, the second end and the third end of the tenth optocoupler switch (Q8) are respectively and electrically connected with the second end of the fourth radio frequency input end, the eighth radio frequency wave output end (FACE-7) and the tenth driving control end (SW 7); the first end, the second end and the third end of the eleventh optocoupler switch (Q9) are respectively and electrically connected with the second end of the third radio frequency input end, the ninth radio frequency wave output end (FACE-8) and the eleventh driving control end (SW 8); the first end, the second end and the third end of the twelfth optocoupler switch (Q10) are respectively and electrically connected with the second end of the fourth radio frequency input end, the tenth radio frequency wave output end (FACE-9) and the twelfth driving control end (SW 9).
The third driving control terminal (SW 0), the fourth driving control terminal (SW 1), the fifth driving control terminal (SW 2), the sixth driving control terminal (SW 3), the seventh driving control terminal (SW 4), the eighth driving control terminal (SW 5), the ninth driving control terminal (SW 6), the tenth driving control terminal (SW 7), the eleventh driving control terminal (SW 8) and the twelfth driving control terminal (SW 9) are connected to the driving chip for control.
The working principle of the radio frequency output circuit for the radio frequency beauty instrument in the embodiment of the invention is as follows:
according to the embodiment of the invention, two paths of PWM signals with 180 DEG phase difference are input into a port at the beginning of a driving circuit and enter a MOS tube driving chip U1, the MOS tube driving chip U1 is used for driving a first MOS tube (Q2) and a second MOS tube (Q2), and the first MOS tube (Q2) and the second MOS tube (Q2) play an amplifying role, because the power of the PWM signals obtained from a singlechip is smaller, and the use requirement can be met by amplifying. The first inductor (L1) and the second inductor (L2) are used for filtering high-frequency signals, and the high-frequency signals are matched with the MOS tube to convert PWM signals into sine signals.
For other descriptions of the rf output circuit for the rf cosmetic apparatus, please refer to the related descriptions in the first, second and third embodiments, and the descriptions are omitted herein.
Therefore, the rf output circuit for an rf cosmetic instrument described in the fourth embodiment can reduce the complexity of the circuit and occupy the space of the circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.
Example five
The embodiment of the invention discloses electronic equipment which is equipment needing voltage stabilization and comprises a radio frequency output circuit for a radio frequency beauty instrument, wherein the radio frequency output circuit is any one embodiment or two embodiments or three embodiments of the electronic equipment. It should be noted that, for the detailed description of the rf output circuit for the rf cosmetic apparatus, please refer to the detailed description of the related contents in the first to third embodiments, and the detailed description of this embodiment is omitted.
Therefore, the electronic device described in the fifth embodiment can reduce the complexity of the circuit and occupy the space of the circuit board, thereby improving the efficiency of the circuit and reducing the power consumption of the circuit.
The foregoing describes in detail a radio frequency output circuit and an electronic device for a radio frequency cosmetic instrument according to embodiments of the present invention, and specific embodiments are applied to illustrate the principles and implementation of the present invention, but the foregoing preferred embodiments are not intended to limit the present invention, and the foregoing description of the embodiments is only used to help understand the method and core idea of the present invention; also, it is apparent to those skilled in the art from this disclosure that many changes can be made in this embodiment and this application without departing from the spirit and scope of the invention, which is set forth in the following claims.

Claims (10)

1. The radio frequency output circuit for the radio frequency cosmetic instrument is characterized by comprising a driving circuit, an amplifying and converting circuit and an output circuit, wherein:
the first end of the driving circuit is connected with the first end of the amplifying and converting circuit; the second end of the amplifying and converting circuit is connected with the first end of the output circuit;
the radio frequency output circuit for the radio frequency beauty instrument is used for carrying out power amplification and filtering treatment on the PWM signal with the input phase difference of 180 degrees so as to output a radio frequency signal with a sine waveform.
2. The radio frequency output circuit for a radio frequency cosmetic instrument according to claim 1, wherein the driving circuit is configured to drive the amplifying and converting circuit to operate; the driving circuit comprises a MOS tube driving chip, a first signal input end, a second signal input end, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor and a first capacitor; wherein,,
the first end of the first resistor is electrically connected with the first end of the third resistor and the first end of the MOS tube driving chip respectively, and the second end of the first resistor is electrically connected with the first signal input end; the first end of the second resistor is electrically connected with the first end of the fourth resistor and the second end of the MOS tube driving chip respectively, and the second end of the second resistor is electrically connected with the second signal input end; the third end of the MOS tube driving chip is electrically connected with the first end of the sixth resistor and the first end of the eighth resistor respectively, and the fourth end of the MOS tube driving chip is electrically connected with the first end of the first capacitor; the third end of the MOS tube driving chip is electrically connected with the first end of the fifth resistor and the first end of the seventh resistor respectively; the second end of the fifth resistor, the second end of the sixth resistor, the second end of the seventh resistor and the second end of the eighth resistor are all electrically connected with the amplifying and converting circuit; the second end of the third resistor, the second end of the fourth resistor and the second end of the first capacitor are grounded.
3. The rf output circuit for an rf cosmetic apparatus of claim 1, wherein the amplification and conversion circuit comprises two sets of signal components for power amplifying and high frequency filtering the signals;
each signal component comprises an MOS tube and an inductor;
the output of the amplifying and converting circuit is two sine signals; the two sinusoidal signals have different polarities and are not phase overlapping.
4. The rf output circuit for an rf cosmetic apparatus of claim 3, wherein the MOS transistors in both sets of the signal components are alternately turned on and off; the time for alternately opening the MOS tubes in the signal component is positively correlated with the duty ratio of the PWM waves input into the driving circuit.
5. The RF output circuit for a RF cosmetic instrument of claim 3, wherein the amplification switch circuit comprises a first MOS transistor, a second MOS transistor, a first intermediate output terminal, a second intermediate output terminal, a first inductor, a second inductor, a third inductor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, and a ninth resistor,
the G end and the S end of the first MOS tube are electrically connected with the driving circuit, and the D end of the first MOS tube is electrically connected with the first end of the first inductor and the first end of the fourth capacitor respectively; the G end of the second MOS tube is electrically connected with the driving circuit, the D end of the second MOS tube is respectively and electrically connected with the first end of the second inductor and the first end of the fifth capacitor, and the S end of the second MOS tube, the driving circuit and the first end of the ninth resistor are all grounded; the second end of the first inductor is connected with the second end of the second inductor and the first end of the third inductor respectively; the second end of the third inductor is electrically connected with the first end of the second capacitor and the first end of the third capacitor respectively; the second end of the fourth capacitor is electrically connected with the first end of the first middle output end; the second end of the fifth capacitor is electrically connected with the first end of the second middle output end; the second end of the first intermediate output end and the second end of the second intermediate output end are electrically connected with the output circuit; the second end of the second capacitor, the second end of the third capacitor and the second end of the ninth resistor are all grounded.
6. The rf output circuit of claim 5, wherein the G end of the first MOS tube is electrically connected to the second end of the fifth resistor in the driving circuit, and the S end of the first MOS tube is electrically connected to the second end of the eighth resistor in the driving circuit; the G end of the second MOS tube is electrically connected with the second end of the sixth resistor in the driving circuit, and the S end of the second MOS tube is electrically connected with the second end of the seventh resistor in the driving circuit.
7. The radio frequency output circuit for a radio frequency cosmetic instrument according to claim 1, wherein the output circuit comprises a first output circuit and a second output circuit;
the first output circuit is used for conducting circuit isolation when the amplifying and converting circuit conducts power amplification and high-frequency filtering processing, and outputting two paths of radio frequency signals;
the second output circuit is used for splitting the radio frequency signal output by the first output circuit into 10 paths of radio frequency wave arrival metal probes with alternating positive and negative waveforms.
8. The rf output circuit for an rf cosmetic instrument of claim 7, wherein the first output circuit comprises a first rf input, a second rf input, a first optocoupler switch, a second optocoupler switch, a first rf output, a second rf output, a first drive control, a second drive control, a first variable frequency output, and a second variable frequency output; wherein,,
a first end of the first radio frequency input end is electrically connected with a second end of a first middle output end in the amplifying driving circuit, and a second end of the first radio frequency input end is electrically connected with a first end of the first optical coupler switch; the second end of the first optical coupler switch is electrically connected with the first variable frequency output end, the third end of the first optical coupler switch is electrically connected with the first driving control end, and the fourth end of the first optical coupler switch is electrically connected with the first radio frequency output end; the first end of the second radio frequency input end is electrically connected with the second end of the second middle output end in the amplifying driving circuit, and the second end of the second radio frequency input end is electrically connected with the first end of the second optical coupler switch; the second end of the second optical coupler switch is electrically connected with the second variable frequency output end, the third end of the second optical coupler switch is electrically connected with the second driving control end, and the fourth end of the second optical coupler switch is electrically connected with the second radio frequency output end.
9. The rf output circuit for an rf cosmetic instrument of claim 8, wherein the second output circuit includes a third rf input, a fourth rf input, a third opto-coupler switch, a fourth opto-coupler switch, a fifth opto-coupler switch, a sixth opto-coupler switch, a seventh opto-coupler switch, an eighth opto-coupler switch, a ninth opto-coupler switch, a tenth opto-coupler switch, an eleventh opto-coupler switch, a twelfth opto-coupler switch, a third drive control, a fourth drive control, a fifth drive control, a sixth drive control, a seventh drive control, an eighth drive control, a ninth drive control, a tenth drive control, an eleventh drive control, a twelfth drive control, a first rf wave output, a second rf wave output, a third rf wave output, a fourth rf wave output, a fifth rf wave output, a sixth rf wave output, a seventh rf wave output, an eighth rf wave output, a ninth rf wave output, a tenth rf wave output; wherein,,
the first end of the third radio frequency input end and the first end of the fourth radio frequency input end are respectively and electrically connected with the second end of the first radio frequency output end and the second end of the second radio frequency output end; the first end, the second end and the third end of the third optical coupler switch are respectively and electrically connected with the second end of the third radio frequency input end, the first radio frequency wave output end and the third driving control end; the first end, the second end and the third end of the fourth optical coupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the second radio frequency wave output end and the fourth driving control end; the first end, the second end and the third end of the fifth optical coupler switch are respectively and electrically connected with the second end of the third radio frequency input end, the third radio frequency wave output end and the fifth driving control end; the first end, the second end and the third end of the sixth optical coupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the fourth radio frequency wave output end and the sixth driving control end; the first end, the second end and the third end of the seventh optical coupler switch are respectively and electrically connected with the second end, the fifth radio frequency wave output end and the seventh driving control end of the third radio frequency input end; the first end, the second end and the third end of the eighth optocoupler switch are respectively and electrically connected with the second end, the sixth radio frequency wave output end and the eighth driving control end of the fourth radio frequency input end; the first end, the second end and the third end of the ninth optocoupler switch are respectively and electrically connected with the second end, the seventh radio frequency wave output end and the ninth driving control end of the third radio frequency input end; the first end, the second end and the third end of the tenth optical coupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the eighth radio frequency wave output end and the tenth driving control end; the first end, the second end and the third end of the eleventh optocoupler switch are respectively and electrically connected with the second end of the third radio frequency input end, the ninth radio frequency wave output end and the eleventh driving control end; the first end, the second end and the third end of the twelfth optocoupler switch are respectively and electrically connected with the second end of the fourth radio frequency input end, the tenth radio frequency wave output end and the twelfth driving control end.
10. An electronic device comprising a radio frequency output circuit for a radio frequency cosmetic instrument as claimed in any one of claims 1 to 9.
CN202310354074.4A 2023-03-27 2023-03-27 Radio frequency output circuit for radio frequency beauty instrument and electronic equipment Pending CN116346091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310354074.4A CN116346091A (en) 2023-03-27 2023-03-27 Radio frequency output circuit for radio frequency beauty instrument and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310354074.4A CN116346091A (en) 2023-03-27 2023-03-27 Radio frequency output circuit for radio frequency beauty instrument and electronic equipment

Publications (1)

Publication Number Publication Date
CN116346091A true CN116346091A (en) 2023-06-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310354074.4A Pending CN116346091A (en) 2023-03-27 2023-03-27 Radio frequency output circuit for radio frequency beauty instrument and electronic equipment

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Country Link
CN (1) CN116346091A (en)

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