CN205584002U - Improve food preparation machine harmonic current's control circuit - Google Patents
Improve food preparation machine harmonic current's control circuit Download PDFInfo
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- CN205584002U CN205584002U CN201521082420.5U CN201521082420U CN205584002U CN 205584002 U CN205584002 U CN 205584002U CN 201521082420 U CN201521082420 U CN 201521082420U CN 205584002 U CN205584002 U CN 205584002U
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- 238000002360 preparation method Methods 0.000 title abstract 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000012937 correction Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 238000010298 pulverizing process Methods 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052710 silicon Inorganic materials 0.000 abstract description 7
- 239000010703 silicon Substances 0.000 abstract description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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 relates to an improve food preparation machine harmonic current's control circuit, include: rectifier circuit, its alternating voltage to from the NULL power input carries out the rectification, load circuit is including the load, improve food preparation machine harmonic current's control circuit still includes pressure reducing type's power factor correction circuit, and this pressure reducing type's power factor correction circuit is connected with rectifier circuit's back level, and then is connected with load circuit. Compared with the prior art, can improve harmonic current, harmonic current is minimum, and electromagnetic interference also can reduce substantially in addition, may not use the reactor in addition for the wave form of output still be the sine wave, and the distortion of wave form is little, and power factor is not less than 0.95, reaches as high as 0.99, in addition can carry out little frequency control to 3% within, and the lower limit is adjusted generally about 15% to prior art's silicon controlled rectifier, carries out the electrical apparatus that the miniwatt lasts the heating to needs, can be fine satisfied.
Description
Technical field
This utility model relates to the control motor of a kind of food processor, particularly relates to one and improves food processing
The control circuit of machine harmonic current.
Background technology
Existing food processor food is carried out heating and or a series of process such as pulverizing, in the process,
Need heating and/or pulverizing power are adjusted, prior art generally uses controllable silicon realize the tune of power
Whole, in order to obtain continuously adjustable power, controllable silicon generally uses phase shifting control, and i.e. controllable silicon is at power supply electricity
Press through the conducting of zero delay α phase angle, regulated by time of controlled silicon conducting in one complete cycle of regulation
The average voltage that load is obtained.But this method can produce substantial amounts of harmonic wave, especially big in total power
When 800W.Traditional method typically adds harmonic wave reactor and solves, but reactor volume is big, Heavy Weight, and
And power factor (PF) is reduced, therefore it is not highly desirable selection.Also there are some software control method permissible
The harmonic current of this kind of mode is improved, but can not be fully solved,
Utility model content
In view of this, it is necessary to a kind of control circuit being effectively improved harmonic current is provided.
This utility model is achieved through the following technical solutions:
A kind of control circuit improving food processor harmonic current, including: rectification circuit, it is to from exchange
The alternating voltage of input power input carries out rectification；Load circuit, including load；Described improve food processing
The control circuit of machine harmonic current also includes the power factor correction circuit of buck, the power of this buck because of
Element correcting circuit is connected with the rear class of rectification circuit, is connected with load circuit the most again.
The power factor correction circuit of described buck includes filter circuit, on-off circuit and freewheeling circuit, filter
Wave circuit is connected with the rear class of rectification circuit；Freewheeling circuit is connected with load, and switching circuit in series accesses filtering
Between circuit and freewheeling circuit.
Described filter circuit includes the positive output of inductance L1 and electric capacity C1, this inductance L1 one end and rectification circuit
End connects, and the other end of this inductance L1 is connected with electric capacity C1, the other end of this electric capacity C1 and rectification circuit
Negative input end connect；Described on-off circuit includes switch element, ON-OFF control circuit and switch buffer circuit,
Described switch element is for controlling the power on/off of load circuit, and this switch element is MOSFET, this switch unit
Part includes grid, source electrode and drain electrode, and the source electrode of this switch element is connected with one end of inductance L1 and electric capacity C1；
Described ON-OFF control circuit, for controlling the break-make of described switch element, is electrically connected including driver element and with it
The control unit connect, this driver element electrically connects with the grid of switch element；Described switch buffer circuit includes
Resistance R1 and electric capacity C3, resistance R1 with C3 connect, and are then parallel to switch element source electrode and drain electrode；Institute
State freewheeling circuit and include inductance L2, electric capacity C2 and diode D1, described diode D1 one end and switch unit
The drain electrode of part connects, and the other end is connected with the negative output terminal of rectification circuit, this inductance L2 one end and switch element
Drain electrode connect, the other end is connected with electric capacity C2, the C2 parallel connection of this electric capacity access load, this electric capacity C2's
The other end is connected with the negative output terminal of rectification circuit.
Described filter circuit includes the positive output of inductance L1 and electric capacity C1, this inductance L1 one end and rectification circuit
End connects, and the other end of this inductance L1 is connected with electric capacity C1, the other end of this electric capacity C1 and rectification circuit
Negative input end connect；Described on-off circuit includes switch element, ON-OFF control circuit and switch buffer circuit,
Described switch element is for controlling the power on/off of load circuit, and this switch element is IGBT, this switch element bag
Including gate pole, emitter stage and colelctor electrode, the emitter stage of this switch element connects with one end of inductance L1 and electric capacity C1
Connect；Described ON-OFF control circuit for controlling the break-make of described switch element, including driver element and and its
The control unit of electrical connection, this driver element electrically connects with the gate pole of switch element；Described switch buffer circuit
Including resistance R1 and electric capacity C3, resistance R1 with C3 connects, and is then parallel to switch element emitter stage and collection
Electrode；Described freewheeling circuit includes inductance L2, electric capacity C2 and diode D1, described diode D1 one end
Being connected with the colelctor electrode of switch element, the other end is connected with the negative output terminal of rectification circuit, this inductance L2 one end
Being connected with the colelctor electrode of switch element, the other end is connected with electric capacity C2, and the C2 parallel connection of this electric capacity accesses load,
The other end of this electric capacity C2 is connected with the negative output terminal of rectification circuit.
Described load circuit for pulverize circuit, described load is motor, the rated power of this motor be 100 to
450 watts, described electric capacity C1 is 1 to 100 microfarad, and inductance L1 is 20 to 200 micro-hertz, and inductance L2 is
20 to 200 is micro-conspicuous, and the driving frequency of switch element is 15 to 30 hertz.
Described load circuit is heater circuit, and described load is heating element heater, the rated power of this heating element heater
Being 800 to 3000 watts, described electric capacity C1 is 0.3 to 10 microfarad, and inductance L1 is 20 to 200 micro-hertz,
Inductance L2 is 20 to 200 micro-hertz, and the driving frequency of switch element is 15 to 50 hertz.
Described load circuit, described load is motor and heating element heater, the rated power of this motor be 100 to
450 watts, the rated power of this heating element heater is 800 to 3000 watts, and described electric capacity C1 is 2 to 200 microfarads,
Inductance L1 is 20 to 200 micro-hertz, and inductance L2 is 20 to 200 micro-hertz, and the driving frequency of switch element is
15 to 50 hertz.
Described control circuit also includes current detection circuit, this current detection circuit respectively with filter circuit and opening
Pass circuit connects, and this control unit, according to the amplitude detected of current detection circuit and phase place, adjusts switch
The ON time of element.
Described control circuit also includes voltage detecting circuit, and this voltage detecting circuit is respectively with rectification circuit just
Outfan and on-off circuit connect, this control unit according to the amplitude detected of voltage detecting circuit and phase place,
Adjust the ON time of switch element.
Described control circuit also includes load voltage testing circuit, this load voltage testing circuit respectively with load
And on-off circuit connects, this control unit, according to the amplitude detected of voltage detecting circuit and phase place, adjusts
The ON time of switch element.
This utility model is had the benefit that
The described control circuit improving food processor harmonic current also includes the Active PFC electricity of buck
Road, the power factor correction circuit of this buck is connected with the rear class of rectification circuit, the most again with load circuit
Connect.So, by arranging the power factor correction circuit of buck, harmonic current, harmonic wave can be improved
Electric current is minimum, and electromagnetic interference also can be greatly reduced, additionally can be without reactor so that output
Waveform remains as sine wave, and the distortion of waveform is little, and power factor (PF) is not less than 0.95, reaches as high as 0.99；
In addition, little power adjustments within 3% can be carried out, and the controllable silicon of prior art regulates lower limit one
As about 15%, for needing to carry out the electrical equipment of small-power continuous heating, can well meet.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, this utility model is described in further detail:
Fig. 1 is the control circuit first preferably reality improving food processor harmonic current described in the utility model
Execute the schematic diagram of mode；
Fig. 2 is the control circuit second preferably reality improving food processor harmonic current described in the utility model
Execute the schematic diagram of mode.
The label that in figure, component names is corresponding is as follows:
10, the control circuit of food processor harmonic current is improved；11, rectification circuit；12, load circuit；
13, the power factor correction circuit of buck；131, filter circuit；132, on-off circuit；1321, open
Close element；1322, ON-OFF control circuit；1323, switch buffer circuit；133, freewheeling circuit；20, change
The control circuit of kind food processor harmonic current；21, current detection circuit；22, voltage detecting circuit；
23, load voltage testing circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is described in further detail by embodiment:
Embodiment one:
Refer to that this utility model shown in Fig. 1 improves the control circuit of food processor harmonic current first
Better embodiment, the described control circuit 10 improving food processor harmonic current includes: rectification circuit 11,
Its alternating voltage to inputting from alternating current input power supplying carries out rectification；Load circuit 12, including load；Blood pressure lowering
The power factor correction circuit 13 of formula.
In the present embodiment, the bridge rectifier that described rectification circuit 11 is made up of four diodes.
In the present embodiment, described load circuit 12 is heater circuit, and described load is heating element heater, should
The rated power of heating element heater is 800 to 3000 watts.
In the present embodiment, the power factor correction circuit 13 of described buck includes:
1, filter circuit 131, it is connected with the rear class of described rectification circuit 11, including inductance L1 and electric capacity
C1；This inductance L1 one end is connected with the positive output end of rectification circuit 11, the other end of this inductance L1 and electric capacity
C1 connects, and the other end of this electric capacity C1 is connected with the negative input end of rectification circuit；
2, on-off circuit 132, this on-off circuit includes switch element 1321, ON-OFF control circuit 1322, opens
Closing buffer circuit 1323, this switch element 1321 is for controlling the power on/off of load circuit 12, in this enforcement
In mode, this switch element 1321 is MOSFET, and this switch element 1321 includes grid (G), source electrode
And drain electrode (D), the source electrode (S) of this switch element 1321 and inductance L1 and one end of electric capacity C1 (S)
Connect；This ON-OFF control circuit 1322 is for controlling the break-make of described switch element 1321, single including driving
Unit and the control unit being connected electrically, this driver element is electrically connected with the grid (G) of switch element 1321
Connect；This switch buffer circuit 1323 plays the effect of protection switch element 1321, including resistance R1 and electric capacity
C3, resistance R1 with C3 connect, and are then parallel to source electrode (S) and the drain electrode (D) of switch element 1321；
3, described freewheeling circuit 133 includes inductance L2, electric capacity C2 and diode D1, described diode D1
One end is connected with the drain electrode (D) of switch element 1321, and the other end is connected with the negative output terminal of rectification circuit 11,
This inductance L2 one end is connected with the drain electrode (D) of switch element 1321, and the other end is connected with electric capacity C2, should
Electric capacity C2 parallel connection accesses load, and the other end of this electric capacity C2 is connected with the negative output terminal of rectification circuit 11.
In the present embodiment, described electric capacity C2 is high frequency capacitance, and described diode D1 is fast recovery two poles
Pipe, described electric capacity C1 is 0.3 to 10 microfarad, and inductance L1 is 20 to 200 micro-hertz, and inductance L2 is 20
Micro-conspicuous to 200, the driving frequency of switch element is 15 to 50 hertz.So, comprehensive harmonic wave and electromagnetism are done
Disturb factor so that the voltage and current of output is more reliable and more stable.
Concrete operation principle is as follows: the rectified circuit of alternating current 11 becomes pulsating direct current, then through inductance L1
Being filtered with the wave filter of electric capacity C1 composition, switch element 1321 is high-order dc switch, carries out at a high speed
Switch.When switch element 1321 is opened, electric current flows to load through switch element 1321, inductance L2, with
Time C1 start electric discharge, voltage decline, when switch element 1321 turns off, electric current through inductance L2, load,
Diode D1 forms loop, refluxes, and electric capacity C2 is filter capacitor, and electric capacity C1 starts to charge up simultaneously,
Voltage rises.Thus by the break-make of regulation switch element 1321, thus reach to regulate the purpose of power.
Below as a example by heating element heater rated power is 2000 watts, modulate the survey of the harmonic current value of 50% power
Test result such as table one (on the basis of the harmonic limits of GB)
Table one:
Visible, harmonic wave has obtained obvious improvement.
By arranging the power factor correction circuit 13 of buck, harmonic current, harmonic current pole can be improved
Little, and electromagnetic interference also can be greatly reduced, additionally can be without reactor so that the waveform of output is still
Being so sinusoidal wave, the distortion of waveform is little, and power factor (PF) is not less than 0.95, reaches as high as 0.99；Except this it
Outward, little power adjustments within 3% can be carried out, and controllable silicon regulation lower limit is typically about 15%, right
In needing to carry out the electrical equipment of small-power continuous heating, can well meet.
Being appreciated that described load circuit is to pulverize circuit, this load is motor, the rated power of this motor
It is 100 to 450 watts.Described electric capacity C2 is high frequency capacitance, and described diode D1 is fast recovery diode,
Described electric capacity C1 is 1 to 100 microfarad, and inductance L1 is 20 to 200 micro-hertz, and inductance L2 is 20 to 200
Micro-conspicuous, the driving frequency of switch element is 15 to 30 hertz.So, comprehensive harmonic wave and electromagnetic interference factor,
The voltage and current making output is more reliable and more stable.
It is appreciated that described load circuit, described load are motor and heating element heater, the specified merit of this motor
Rate is 100 to 450 watts, and the rated power of this heating element heater is 800 to 3000 watts.Described electric capacity C2 is
High frequency capacitance, described diode D1 is fast recovery diode, and described electric capacity C1 is 2 to 200 microfarads, electricity
Sense L1 is 20 to 200 micro-hertz, and inductance L2 is 20 to 200 micro-hertz, and the driving frequency of switch element is 15
To 50 hertz.So, comprehensive harmonic wave and electromagnetic interference factor so that the voltage and current of output is more stable
Reliably.
Be appreciated that described switch element can also for IGBT, this switch element include gate pole, colelctor electrode,
Emitter stage.
It is appreciated that described rectification circuit can also be single rectifier bridge.
Embodiment two:
Refer to this utility model shown in Fig. 2 improve food processor harmonic current control circuit second relatively
Good embodiment, the control circuit 20 of this improvement food processor harmonic current with improve food processor harmonic wave
The difference of the control circuit 10 of electric current is: the described control circuit 20 improving food processor harmonic current
Also including current detection circuit 21, voltage detecting circuit 22 and load voltage testing circuit 23, this electric current is examined
Slowdown monitoring circuit 21 is connected with filter circuit 131, and this control unit detects according to current detection circuit 21
Amplitude and phase place, adjust the ON time of switch element 1321；This voltage detecting circuit 22 and rectification circuit
The positive output end of 11 connects, this control unit according to the amplitude detected of voltage detecting circuit 22 and phase place,
Adjust the ON time of switch element 1321；This load voltage testing circuit 23 is connected with load, this control
Unit, according to the amplitude detected of voltage detecting circuit 23 and phase place, adjusts the conducting of switch element 1321
Time.
So, it is achieved electric current and the synchronization of voltage, improve harmonic performance further, improve power factor (PF), make
The adaptability obtaining control circuit is higher.
Other structures of present embodiment and beneficial effect are all identical with embodiment one, repeat the most one by one at this.
Claims (9)
1. improve a control circuit for food processor harmonic current, including: rectification circuit, its alternating voltage to inputting from alternating current input power supplying carries out rectification；Load circuit, including load；It is characterized in that: the described control circuit improving food processor harmonic current also includes the power factor correction circuit of buck, the power factor correction circuit of this buck is connected with the rear class of rectification circuit, it is connected with load circuit the most again, the power factor correction circuit of described buck includes that filter circuit, on-off circuit and freewheeling circuit, filter circuit are connected with the rear class of rectification circuit；Freewheeling circuit is connected with load, and switching circuit in series accesses between filter circuit and freewheeling circuit.
Improve the control circuit of food processor harmonic current the most as claimed in claim 1, it is characterized in that: described filter circuit includes inductance L1 and electric capacity C1, this inductance L1 one end is connected with the positive output end of rectification circuit, the other end of this inductance L1 is connected with electric capacity C1, and the other end of this electric capacity C1 is connected with the negative input end of rectification circuit；Described on-off circuit includes switch element, ON-OFF control circuit and switch buffer circuit, described switch element is for controlling the power on/off of load circuit, this switch element is MOSFET, this switch element includes grid, source electrode and drain electrode, and the source electrode of this switch element is connected with one end of inductance L1 and electric capacity C1；Described ON-OFF control circuit is for controlling the break-make of described switch element, and including driver element and the control unit that is connected electrically, this driver element electrically connects with the grid of switch element；Described switch buffer circuit includes that resistance R1 and electric capacity C3, resistance R1 with C3 connect, and is then parallel to switch element source electrode and drain electrode；Described freewheeling circuit includes inductance L2, electric capacity C2 and diode D1, described diode D1 one end is connected with the drain electrode of switch element, the other end is connected with the negative output terminal of rectification circuit, this inductance L2 one end is connected with the drain electrode of switch element, the other end is connected with electric capacity C2, the C2 parallel connection of this electric capacity accesses load, and the other end of this electric capacity C2 is connected with the negative output terminal of rectification circuit.
Improve the control circuit of food processor harmonic current the most as claimed in claim 1, it is characterized in that: described filter circuit includes inductance L1 and electric capacity C1, this inductance L1 one end is connected with the positive output end of rectification circuit, the other end of this inductance L1 is connected with electric capacity C1, and the other end of this electric capacity C1 is connected with the negative input end of rectification circuit；Described on-off circuit includes switch element, ON-OFF control circuit and switch buffer circuit, described switch element is for controlling the power on/off of load circuit, this switch element is IGBT, this switch element includes gate pole, emitter stage and colelctor electrode, and the emitter stage of this switch element is connected with one end of inductance L1 and electric capacity C1；Described ON-OFF control circuit is for controlling the break-make of described switch element, and including driver element and the control unit that is connected electrically, this driver element electrically connects with the gate pole of switch element；Described switch buffer circuit includes that resistance R1 and electric capacity C3, resistance R1 with C3 connect, and is then parallel to switch element emitter stage and colelctor electrode；Described freewheeling circuit includes inductance L2, electric capacity C2 and diode D1, described diode D1 one end is connected with the colelctor electrode of switch element, the other end is connected with the negative output terminal of rectification circuit, this inductance L2 one end is connected with the colelctor electrode of switch element, the other end is connected with electric capacity C2, the C2 parallel connection of this electric capacity accesses load, and the other end of this electric capacity C2 is connected with the negative output terminal of rectification circuit.
Improve the control circuit of food processor harmonic current the most as claimed in claim 2 or claim 3, it is characterized in that: described load circuit is for pulverizing circuit, described load is motor, the rated power of this motor is 100 to 450 watts, described electric capacity C1 is 1 to 100 microfarad, inductance L1 is 20 to 200 micro-hertz, and inductance L2 is 20 to 200 micro-hertz, and the driving frequency of switch element is 15 to 30 hertz.
Improve the control circuit of food processor harmonic current the most as claimed in claim 2 or claim 3, it is characterized in that: described load circuit is heater circuit, described load is heating element heater, the rated power of this heating element heater is 800 to 3000 watts, described electric capacity C1 is 0.3 to 10 microfarad, inductance L1 is 20 to 200 micro-hertz, and inductance L2 is 20 to 200 micro-hertz, and the driving frequency of switch element is 15 to 50 hertz.
Improve the control circuit of food processor harmonic current the most as claimed in claim 2 or claim 3, it is characterized in that: described load circuit, described load is motor and heating element heater, the rated power of this motor is 100 to 450 watts, the rated power of this heating element heater is 800 to 3000 watts, and described electric capacity C1 is 2 to 200 microfarads, and inductance L1 is 20 to 200 micro-hertz, inductance L2 is 20 to 200 micro-hertz, and the driving frequency of switch element is 15 to 50 hertz.
7. the control circuit improving food processor harmonic current as described in claims 1 to 3 any one, it is characterized in that: described control circuit also includes current detection circuit, this current detection circuit is connected with filter circuit and on-off circuit respectively, amplitude that this control unit detects according to current detection circuit and phase place, adjust the ON time of switch element.
8. the control circuit improving food processor harmonic current as described in claims 1 to 3 any one, it is characterized in that: described control circuit also includes voltage detecting circuit, this voltage detecting circuit is connected with positive output end and the on-off circuit of rectification circuit respectively, amplitude that this control unit detects according to voltage detecting circuit and phase place, adjust the ON time of switch element.
9. the control circuit improving food processor harmonic current as described in claims 1 to 3 any one, it is characterized in that: described control circuit also includes load voltage testing circuit, this load voltage testing circuit is connected with load and on-off circuit respectively, amplitude that this control unit detects according to voltage detecting circuit and phase place, adjust the ON time of switch element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082420.5U CN205584002U (en) | 2015-12-23 | 2015-12-23 | Improve food preparation machine harmonic current's control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521082420.5U CN205584002U (en) | 2015-12-23 | 2015-12-23 | Improve food preparation machine harmonic current's control circuit |
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| CN205584002U true CN205584002U (en) | 2016-09-14 |
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| CN201521082420.5U Active CN205584002U (en) | 2015-12-23 | 2015-12-23 | Improve food preparation machine harmonic current's control circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429832A (en) * | 2019-08-06 | 2019-11-08 | 深圳创维－Rgb电子有限公司 | A kind of switching power circuit and television set |
| CN114884174A (en) * | 2022-06-06 | 2022-08-09 | 艺唯科技股份有限公司 | Pre-charging slow-release circuit of treadmill |
| CN116707281A (en) * | 2022-10-18 | 2023-09-05 | 荣耀终端有限公司 | Harmonic suppression circuit, power circuit and power adapter |
-
2015
- 2015-12-23 CN CN201521082420.5U patent/CN205584002U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429832A (en) * | 2019-08-06 | 2019-11-08 | 深圳创维－Rgb电子有限公司 | A kind of switching power circuit and television set |
| CN114884174A (en) * | 2022-06-06 | 2022-08-09 | 艺唯科技股份有限公司 | Pre-charging slow-release circuit of treadmill |
| CN116707281A (en) * | 2022-10-18 | 2023-09-05 | 荣耀终端有限公司 | Harmonic suppression circuit, power circuit and power adapter |
| CN116707281B (en) * | 2022-10-18 | 2024-04-19 | 荣耀终端有限公司 | Harmonic suppression circuit, power supply circuit and power adapter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |