CN208461785U - A kind of load impedance tracking cell of ultrasonic power - Google Patents
A kind of load impedance tracking cell of ultrasonic power Download PDFInfo
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- CN208461785U CN208461785U CN201821127265.8U CN201821127265U CN208461785U CN 208461785 U CN208461785 U CN 208461785U CN 201821127265 U CN201821127265 U CN 201821127265U CN 208461785 U CN208461785 U CN 208461785U
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model provides a kind of load impedance tracking cell of ultrasonic power, comprising: Acquisition Circuit and load impedance handle chip；The Acquisition Circuit is acquired in real time for the current demand signal waveform to ultrasonic transducer, and the collected current demand signal waveform is sent to the load impedance and handles chip；The load impedance handles chip, is connected with the Acquisition Circuit, for generating the control signal for controlling the pulse electrical signal frequency of ultrasonic transducer according to the current demand signal waveform.The utility model provides a kind of load impedance tracking cell of ultrasonic power, can be improved the output power of ultrasonic transducer.
Description
Technical field
The utility model relates to electronic technology field more particularly to a kind of load impedance tracking cell of ultrasonic power.
Background technique
Ultrasonic power is a kind of for generating and providing the device of ultrasonic energy to ultrasonic transducer.Ultrasonic wave electricity
The effect in source is that the electric signal of the inputs such as alternating current is converted to the high-frequency ac electric signal to match with ultrasonic transducer, by this
High-frequency ac electric signal drives ultrasonic transducer to work as driving signal.
When the frequency of the driving signal of ultrasonic power output is equal with the resonance frequency of ultrasonic transducer, ultrasonic waves
The output power of energy device is just maximum.Ultrasonic transducer at work because the rigidity of institute's loading and vibrational system itself,
Temperature etc. changes, and will cause the drift of resonance frequency, if driving signal cannot be with the resonance frequency of ultrasonic transducer
The variation of rate and change, then, the output power of ultrasonic transducer will reduce.In the prior art, ultrasonic power
The frequency of driving signal is generally fixed and invariable, in this way, will make the output power of ultrasonic transducer reduces.
Utility model content
The utility model embodiment provides a kind of load impedance tracking cell of ultrasonic power, can be improved ultrasonic wave
The output power of energy converter.
The utility model embodiment provides a kind of load impedance tracking cell of ultrasonic power, comprising:
Acquisition Circuit and load impedance handle chip；
The Acquisition Circuit is acquired in real time for the current demand signal waveform to ultrasonic transducer, will be collected
The current demand signal waveform is sent to the load impedance processing chip；
The load impedance handles chip, for being generated according to the current demand signal waveform for controlling ultrasonic transducer
Pulse electrical signal frequency control signal；
The Acquisition Circuit, comprising:
The input terminal of filter is connected with ultrasonic transducer, the output end of the filter and the first end of first capacitor
It is connected, the second end of the first capacitor is connected with the first end of first resistor, and the second end of the first resistor is respectively with the
The first end of two capacitors, the non-inverting input terminal of the first operational amplifier are connected, the second end of second capacitor ground connection, and described the
The output end of one operational amplifier respectively with the inverting input terminal of first operational amplifier, the same phase of second operational amplifier
Input terminal is connected, the reverse inter-input-ing ending grounding of the second operational amplifier, the output end of the second operational amplifier and institute
The first input end for stating load impedance processing chip is connected；
The first end of second resistance is connected with the ultrasonic transducer, the second end of the second resistance respectively with third
The first end of resistance, the first end of third capacitor are connected, the second end ground connection of 3rd resistor, the second end of the third capacitor with
The first end of 4th resistance is connected, the second end of the 4th resistance respectively with the first end of the 4th capacitor, third operation amplifier
The non-inverting input terminal of device is connected, the second end ground connection of the 4th capacitor, the output end of the third operational amplifier respectively with
Inverting input terminal, the non-inverting input terminal of four-operational amplifier of the third operational amplifier are connected, and the 4th operation is put
The reverse inter-input-ing ending grounding of big device, second that output end and the load impedance of the four-operational amplifier handle chip are defeated
Enter end to be connected.
Further,
Further comprise: output of pulse signal circuit；
The output of pulse signal circuit, comprising:
The high-end input pin of first driving chip is connected with the first output end of load impedance processing chip, described
The high-end input pin of first driving chip is connected with the low side input pin of the second driving chip；
The high-end input pin of second driving chip is connected with the second output terminal of load impedance processing chip, described
The high-end input pin of second driving chip is connected with the low side input pin of the first driving chip；
The first end of 5th resistance is connected with the low side input pin of first driving chip, and the of the 5th resistance
Two ends are connected with the first end of the 6th resistance, and the second end of the 6th resistance is drawn with the low side input of second driving chip
Foot is connected, the second termination first voltage of the 5th resistance；
The high-end floating power pin of first driving chip is connected with the cathode of first diode, the one or two pole
The anode of pipe connects second voltage；The high-end floating power feedback pin of first driving chip and the ultrasonic transducer phase
Even, the low side feedback pin of first driving chip connects tertiary voltage；The low side energization pins of first driving chip connect
The second voltage；The anode of second diode is connected with the high-end floating power feedback pin of first driving chip, institute
The cathode for stating the second diode is connected with the high-end output pin of first driving chip；The plus earth of third diode,
The cathode of third diode is connected with the low side output pin of first driving chip；The first end of 5th capacitor and described the
The high-end floating power feedback pin of one driving chip is connected, second end and first driving chip of the 5th capacitor
High-end floating power pin is connected；The first end of 6th capacitor is connected with the low side energization pins of first driving chip, institute
State the second termination tertiary voltage of the 6th capacitor；
The high-end floating power pin of second driving chip is connected with the cathode of the 4th diode, the four or two pole
The anode of pipe connects the second voltage；The high-end floating power feedback pin of second driving chip and the ultrasonic wave transducer
Device is connected, and the low side feedback pin of second driving chip connects the tertiary voltage；The low side of second driving chip supplies
Electric pin connects the second voltage；The high-end floating power feedback pin of the anode and second driving chip of 5th diode
It is connected, the cathode of the 5th diode is connected with the high-end output pin of second driving chip；6th diode is just
Pole ground connection, the cathode of the 6th diode are connected with the low side output pin of second driving chip；The first end of 7th capacitor
It is connected with the high-end floating power feedback pin of second driving chip, the second end of the 7th capacitor and described second is driven
The high-end floating power pin of dynamic chip is connected；The low side energization pins of the first end of 8th capacitor and second driving chip
It is connected, the second termination tertiary voltage of the 8th capacitor.
Further,
The size of the first capacitor is 0.1uf；
The size of second capacitor is 0.33uf；
The size of the third capacitor is 0.1uf；
The size of 4th capacitor is 0.33uf.
Further,
The size of the first resistor is 51k Ω；
The size of the second resistance is 300k Ω；
The size of the 3rd resistor is 2.5k Ω；
The size of 4th resistance is 51k Ω.
Further,
The load impedance processing chip includes chip STM32F103VET6.
Further,
The first voltage is+3.3v；
The second voltage is+12v；
The tertiary voltage is -12v.
Further,
The size of 5th resistance is 10k Ω；
The size of 6th resistance is 10k Ω.
In the utility model embodiment, Acquisition Circuit can current demand signal waveform to ultrasonic transducer carry out it is real-time
Tracking, load impedance processing chip can determine that ultrasonic transducer is corresponding according to the current demand signal waveform of ultrasonic transducer
Present load impedance, and then can determine the target frequency to match with the current resonance frequency of ultrasonic transducer, control is super
Sound wave power supply is the pulse electrical signal of target frequency to ultrasonic transducer output frequency, so that the frequency of pulse electrical signal and super
The current resonance frequency of acoustic wave transducer matches, and improves the output power of ultrasonic transducer.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram of the load impedance tracking cell of ultrasonic power provided by the embodiment of the utility model；
Fig. 2 is the circuit of the load impedance tracking cell of another ultrasonic power provided by the embodiment of the utility model
Figure.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
As shown in Figure 1, the utility model embodiment provides a kind of load impedance tracking cell of ultrasonic power, packet
It includes:
Acquisition Circuit and load impedance handle chip；
The Acquisition Circuit is acquired in real time for the current demand signal waveform to ultrasonic transducer, will be collected
The current demand signal waveform is sent to the load impedance processing chip；
The load impedance handles chip, for determining that the ultrasonic transducer is corresponding according to the current demand signal waveform
Present load impedance, according to the present load impedance is determining and the current resonance frequency of the ultrasonic transducer matches
Target frequency, control ultrasonic power to the ultrasonic transducer output frequency be the target frequency pulse telecommunications
Number；
The Acquisition Circuit, comprising:
The input terminal of filter U1 is connected with ultrasonic transducer, and the output end of the filter U1 is with first capacitor C1's
First end is connected, and the second end of the first capacitor C1 is connected with the first end of first resistor R1, and the of the first resistor R1
Two ends are connected with the non-inverting input terminal of the first end of the second capacitor C2, the first operational amplifier U2 respectively, the second capacitor C2
Second end ground connection, the output end of the first operational amplifier U2 anti-phase input with the first operational amplifier U2 respectively
End, the non-inverting input terminal of second operational amplifier U7 are connected, and the reverse inter-input-ing ending grounding of the second operational amplifier U7 is described
The output end of second operational amplifier U7 is connected with the first input end of load impedance processing chip U6；
The first end of second resistance R2 is connected with the ultrasonic transducer, the second end of the second resistance R2 respectively with
First end, the first end of third capacitor C3 of 3rd resistor R3 is connected, the second end ground connection of 3rd resistor R3, the third capacitor
The second end of C3 is connected with the first end of the 4th resistance R4, the second end of the 4th resistance R4 respectively with the 4th capacitor C4
One end, the non-inverting input terminal of third operational amplifier U8 are connected, the second end ground connection of the 4th capacitor C4, the third operation
The output end of amplifier U8 inverting input terminal, the same phase of four-operational amplifier U5 with the third operational amplifier U8 respectively
Input terminal is connected, the reverse inter-input-ing ending grounding of the four-operational amplifier U5, the output end of the four-operational amplifier U5
It is connected with the second input terminal of load impedance processing chip U6.
In the utility model embodiment, Acquisition Circuit can current demand signal waveform to ultrasonic transducer carry out it is real-time
Tracking, load impedance processing chip can determine that ultrasonic transducer is corresponding according to the current demand signal waveform of ultrasonic transducer
Present load impedance, and then can determine the target frequency to match with the current resonance frequency of ultrasonic transducer, control is super
Sound wave power supply is the pulse electrical signal of target frequency to ultrasonic transducer output frequency, so that the frequency of pulse electrical signal and super
The current resonance frequency of acoustic wave transducer matches, and improves the output power of ultrasonic transducer.
In the utility model embodiment, load impedance tracking cell carries out the load impedance of ultrasonic transducer real-time
Tracking determines frequency, duty ratio, voltage and and the time control of ultrasonic power by the load impedance of ultrasonic transducer in real time
The output for making these parameters keeps whole system in optimal working condition, makes ultrasonic power and ultrasonic transducer phase
Match, improves the working efficiency of ultrasonic transducer.
In the utility model embodiment, the size of first capacitor C1 can be 0.1uf, and the size of the second capacitor C2 can be with
Size for 0.33uf, third capacitor C3 can be 0.1uf, and the size of the 4th capacitor C4 can be 0.33uf.
The size of first resistor R1 can be 51k Ω, and the size of second resistance R2 can be 300k Ω, 3rd resistor R3's
Size can be 2.5k Ω, and the size of the 4th resistance R4 can be 51k Ω.
Load impedance processing chip can be realized by ARM, specifically, can by chip STM32F103VET6 come
It realizes.
In addition, the VCC pin of filter is connected with the first end of the 9th capacitor C9, the second end ground connection of the 9th capacitor C9,
The VCC pin of filter connects+5v voltage.The FILTER pin of filter is connected with the first end of the tenth capacitor C10, the tenth capacitor
The second end of C10 is grounded.
The size of 9th capacitor C9 can be 0.33f, and the size of the tenth capacitor C10 can be 1nf.
In the utility model embodiment, what load impedance processing chip was exported to matching network is used to control pulse telecommunications
Number the control signal of frequency can be PWM (Pulse Width Modulation, pulse width modulation) signal.
In an embodiment of the utility model, the load impedance handles chip, described according to the current letter executing
When number waveform determines the ultrasonic transducer corresponding present load impedance, it is specifically used for:
Fourier transformation is carried out to the current demand signal waveform of Acquisition Circuit input, obtains the of Fourier transformation
One result；
Digital filtering processing is carried out to first result, the harmonic frequency components in first result is filtered out, obtains number
The second result after filtering processing；
According to described second as a result, determining the corresponding present load impedance of the ultrasonic transducer.
In the utility model embodiment, current demand signal waveform may include voltage signal, current signal.Specifically, may be used
To acquire current signal by the input terminal of filter, pass through the first end collection voltages signal of second resistance R2.
In the utility model embodiment, by carrying out Fourier transformation to collected current demand signal waveform, then carry out
Frequency point extracts, and effectively ensures precision, keeps the frequency captured more acurrate.
In an embodiment of the utility model, load impedance tracking cell further comprises: output of pulse signal circuit；
The output of pulse signal circuit, comprising:
The first of the high-end input pin (HIN pin) of first driving chip U7 and the load impedance processing chip U6 is defeated
Outlet is connected, and receives the first pwm control signal of load impedance processing chip output, and the height of the first driving chip U7
End input pin (HIN pin) is connected with the low side input pin (LIN pin) of the second driving chip U8；
The second of the high-end input pin (HIN pin) of second driving chip U8 and the load impedance processing chip U6 is defeated
Outlet is connected, and receives the second pwm control signal of load impedance processing chip output, and the height of the second driving chip U8
End input pin (HIN pin) is connected with the low side input pin (LIN pin) of the first driving chip U7；
The first end of 5th resistance R5 is connected with the low side input pin of the first driving chip U7, the 5th resistance
The second end of R5 is connected with the first end of the 6th resistance R6, the second end of the 6th resistance R6 and the second driving chip U8
Low side input pin be connected, the 5th resistance R5 second termination first voltage；
The high-end floating power pin (VB pin) of the first driving chip U7 is connected with the cathode of first diode D1,
The anode of the first diode D1 connects second voltage；The high-end floating power feedback pin (VS of the first driving chip U7
Pin) it is connected with the ultrasonic transducer, the low side feedback pin (COM pin) of the first driving chip U7 connects third electricity
Pressure；The low side energization pins (VCC pin) of the first driving chip U7 connect the second voltage；The anode of second diode D7
It is connected with the high-end floating power feedback pin (VS pin) of the first driving chip U7, the cathode of the second diode D2
It is connected with the high-end output pin (HO pin) of the first driving chip U7；The plus earth of third diode D3, the three or two
The cathode of pole pipe D3 is connected with the low side output pin (LO pin) of the first driving chip U7；The first end of 5th capacitor C5
It is connected with the high-end floating power feedback pin (VS pin) of the first driving chip U7, the second end of the 5th capacitor C5
It is connected with the high-end floating power pin (VB pin) of the first driving chip U7；The first end of 6th capacitor C6 and described the
The low side energization pins (VCC pin) of one driving chip U7 are connected, the second termination tertiary voltage of the 6th capacitor C6；
The high-end floating power pin (VB pin) of the second driving chip U8 is connected with the cathode of the 4th diode D4,
The anode of the 4th diode D4 connects the second voltage；The high-end floating power feedback pin of the second driving chip U8
(VS pin) is connected with the ultrasonic transducer, and the low side feedback pin (COM pin) of the second driving chip U8 meets institute
State tertiary voltage；The low side energization pins (VCC pin) of the second driving chip U8 connect the second voltage；5th diode
The anode of D5 is connected with the high-end floating power feedback pin (VS pin) of the second driving chip U8, the 5th diode
The cathode of D5 is connected with the high-end output pin (HO pin) of the second driving chip U8；The anode of 6th diode D6 connects
Ground, the cathode of the 6th diode D6 are connected with the low side output pin (LO pin) of the second driving chip U8；7th capacitor
The first end of C7 is connected with the high-end floating power feedback pin (VS pin) of the second driving chip U8, the 7th capacitor
The second end of C7 is connected with the high-end floating power pin (VB pin) of the second driving chip U8；The first of 8th capacitor C8
End is connected with the low side energization pins (VCC pin) of the second driving chip U8, the second termination institute of the 8th capacitor C8
State tertiary voltage.
In the utility model embodiment, the first driving chip can be realized by chip I R2113, the second driving core
Piece can be realized by chip I R2113.
First voltage can be+3.3v, and second voltage can be+12v, and tertiary voltage can be -12v.
In addition, the VSS pin of the first driving chip connects tertiary voltage, the VDD pin of the first driving chip connects second voltage.
The VSS pin of second driving chip connects tertiary voltage, and the VDD pin of the second driving chip connects second voltage.
The size of 5th resistance R5 can be 10k Ω, and the size of the 6th resistance R6 can be 10k Ω.
As shown in Fig. 2, a kind of electricity of the load impedance tracking cell of ultrasonic power provided by the embodiment of the utility model
Lu Tu shows output of pulse signal circuit and load impedance processing chip in figure.It is defeated by first that load impedance handles chip
Outlet and second output terminal are sent to the first driving chip and the second driving chip controls signal, so that output of pulse signal circuit
Output frequency is the pulse electrical signal of target frequency.
The current demand signal waveform of ultrasonic transducer includes the present current waveform of ultrasonic transducer, ultrasonic transducer
Current voltage waveform.
The each embodiment of the utility model at least has the following beneficial effects:
1, in the utility model embodiment, Acquisition Circuit can current demand signal waveform to ultrasonic transducer carry out it is real
When track, load impedance processing chip can determine that ultrasonic transducer is corresponding according to the current demand signal waveform of ultrasonic transducer
Present load impedance, and then can determine the target frequency to match with the current resonance frequency of ultrasonic transducer, control
Ultrasonic power to ultrasonic transducer output frequency be target frequency pulse electrical signal so that the frequency of pulse electrical signal with
The current resonance frequency of ultrasonic transducer matches, and improves the output power of ultrasonic transducer.
2, in the utility model embodiment, load impedance tracking cell carries out the load impedance of ultrasonic transducer real
When track, by the load impedance of ultrasonic transducer, determine the frequency of ultrasonic power, duty ratio, voltage and timely in real time
The output for controlling these parameters keeps whole system in optimal working condition, makes ultrasonic power and ultrasonic transducer phase
Matching, improves the working efficiency of ultrasonic transducer.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (7)
1. a kind of load impedance tracking cell of ultrasonic power characterized by comprising
Acquisition Circuit and load impedance handle chip；
The Acquisition Circuit is acquired in real time for the current demand signal waveform to ultrasonic transducer, will be collected described
Current demand signal waveform is sent to the load impedance processing chip；
The load impedance handles chip, is connected with the Acquisition Circuit, for being used for according to current demand signal waveform generation
Control the control signal of the pulse electrical signal frequency of ultrasonic transducer；
The Acquisition Circuit, comprising:
The input terminal of filter is connected with ultrasonic transducer, the output end and the first end phase of first capacitor of the filter
Even, the second end of the first capacitor is connected with the first end of first resistor, and the second end of the first resistor is respectively with second
The first end of capacitor, the non-inverting input terminal of the first operational amplifier are connected, the second end ground connection of second capacitor, and described first
The output end of operational amplifier respectively with the inverting input terminal of first operational amplifier, second operational amplifier it is same mutually defeated
Enter end be connected, the reverse inter-input-ing ending grounding of the second operational amplifier, the output end of the second operational amplifier with it is described
The first input end that load impedance handles chip is connected；
The first end of second resistance is connected with the ultrasonic transducer, the second end of the second resistance respectively with 3rd resistor
First end, the first end of third capacitor be connected, the second end of 3rd resistor ground connection, the second end and the 4th of the third capacitor
The first end of resistance is connected, the second end of the 4th resistance respectively with the first end of the 4th capacitor, third operational amplifier
Non-inverting input terminal is connected, the second end of the 4th capacitor ground connection, the output end of the third operational amplifier respectively with it is described
Inverting input terminal, the non-inverting input terminal of four-operational amplifier of third operational amplifier are connected, the four-operational amplifier
Reverse inter-input-ing ending grounding, the second input terminal of the output end of the four-operational amplifier and load impedance processing chip
It is connected.
2. load impedance tracking cell according to claim 1, which is characterized in that
Further comprise: output of pulse signal circuit；
The output of pulse signal circuit, comprising:
The high-end input pin of first driving chip is connected with the first output end of load impedance processing chip, and described first
The high-end input pin of driving chip is connected with the low side input pin of the second driving chip；
The high-end input pin of second driving chip is connected with the second output terminal of load impedance processing chip, and described second
The high-end input pin of driving chip is connected with the low side input pin of the first driving chip；
The first end of 5th resistance is connected with the low side input pin of first driving chip, the second end of the 5th resistance
It is connected with the first end of the 6th resistance, the second end and the low side input pin phase of second driving chip of the 6th resistance
Even, the second termination first voltage of the 5th resistance；
The high-end floating power pin of first driving chip is connected with the cathode of first diode, the first diode
Anode connects second voltage；The high-end floating power feedback pin of first driving chip is connected with the ultrasonic transducer,
The low side feedback pin of first driving chip connects tertiary voltage；The low side energization pins of first driving chip connect described
Second voltage；The anode of second diode is connected with the high-end floating power feedback pin of first driving chip, and described the
The cathode of two diodes is connected with the high-end output pin of first driving chip；The plus earth of third diode, third
The cathode of diode is connected with the low side output pin of first driving chip；The first end of 5th capacitor and described first is driven
The high-end floating power feedback pin of dynamic chip is connected, and the second end of the 5th capacitor is high-end with first driving chip
Floating power pin is connected；The first end of 6th capacitor is connected with the low side energization pins of first driving chip, and described
The second termination tertiary voltage of six capacitors；
The high-end floating power pin of second driving chip is connected with the cathode of the 4th diode, the 4th diode
Anode connects the second voltage；The high-end floating power feedback pin of second driving chip and the ultrasonic transducer phase
Even, the low side feedback pin of second driving chip connects the tertiary voltage；The low side power supply of second driving chip is drawn
Foot connects the second voltage；The high-end floating power feedback pin phase of the anode and second driving chip of 5th diode
Even, the cathode of the 5th diode is connected with the high-end output pin of second driving chip；The anode of 6th diode
Ground connection, the cathode of the 6th diode are connected with the low side output pin of second driving chip；The first end of 7th capacitor with
The high-end floating power feedback pin of second driving chip is connected, the second end of the 7th capacitor and second driving
The high-end floating power pin of chip is connected；The low side energization pins phase of the first end of 8th capacitor and second driving chip
Even, the second termination tertiary voltage of the 8th capacitor.
3. load impedance tracking cell according to claim 1, which is characterized in that
The size of the first capacitor is 0.1uf；
The size of second capacitor is 0.33uf；
The size of the third capacitor is 0.1uf；
The size of 4th capacitor is 0.33uf.
4. load impedance tracking cell according to claim 1, which is characterized in that
The size of the first resistor is 51k Ω；
The size of the second resistance is 300k Ω；
The size of the 3rd resistor is 2.5k Ω；
The size of 4th resistance is 51k Ω.
5. load impedance tracking cell according to claim 1, which is characterized in that
The load impedance processing chip includes chip STM32F103VET6.
6. load impedance tracking cell according to claim 2, which is characterized in that
The first voltage is+3.3v；
The second voltage is+12v；
The tertiary voltage is -12v.
7. load impedance tracking cell according to claim 2, which is characterized in that
The size of 5th resistance is 10k Ω；
The size of 6th resistance is 10k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127265.8U CN208461785U (en) | 2018-07-16 | 2018-07-16 | A kind of load impedance tracking cell of ultrasonic power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821127265.8U CN208461785U (en) | 2018-07-16 | 2018-07-16 | A kind of load impedance tracking cell of ultrasonic power |
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| Publication Number | Publication Date |
|---|---|
| CN208461785U true CN208461785U (en) | 2019-02-01 |
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| CN201821127265.8U Active CN208461785U (en) | 2018-07-16 | 2018-07-16 | A kind of load impedance tracking cell of ultrasonic power |
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2018
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