CN204362337U - Electromagnetic Heating control circuit and electromagnetic heating apparatus - Google Patents
Electromagnetic Heating control circuit and electromagnetic heating apparatus Download PDFInfo
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- CN204362337U CN204362337U CN201520073503.1U CN201520073503U CN204362337U CN 204362337 U CN204362337 U CN 204362337U CN 201520073503 U CN201520073503 U CN 201520073503U CN 204362337 U CN204362337 U CN 204362337U
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Abstract
The utility model discloses a kind of Electromagnetic Heating control circuit and comprise control chip, current rectifying and wave filtering circuit, resonant capacitance, switching tube, drive circuit and synchronizing voltage testing circuit; Switching tube comprises first end, the second end and control end, and first end is connected with the positive output end of current rectifying and wave filtering circuit by resonant capacitance, and the second end is connected with the negative output terminal of current rectifying and wave filtering circuit by a current sampling resistor; Control chip comprises in-phase voltage input, reverse voltage input, voltage detecting end and signal input part; In-phase voltage input and reverse voltage input are connected to the two ends of resonant capacitance respectively through synchronizing voltage testing circuit, and signal output part is connected with control end by drive circuit; Voltage detecting end is connected to the positive output end of current rectifying and wave filtering circuit through synchronizing voltage testing circuit, the state of the voltage cut-out pipe work that control chip detects according to voltage detecting end.The invention also discloses a kind of electromagnetic heating apparatus.
Description
Technical field
The utility model relates to electromagnetic heating technique field, particularly relates to Electromagnetic Heating control circuit and electromagnetic heating apparatus.
Background technology
As everyone knows, existing Electromagnetic Heating control circuit needs to detect input ac power, by the voltage adopting control chip/controller to detect the input of current rectifying and wave filtering circuit, controls the whole system power of electromagnetic heating apparatus and carries out overvoltage/undervoltage protection.Usually voltage sampling circuit is set at the input of current rectifying and wave filtering circuit in prior art and carries out voltage detecting, needing, resistance is set carry out dividing potential drop owing to arranging voltage sampling circuit, therefore cause the cost of circuit design and power consumption higher.
Foregoing only understands the technical solution of the utility model for auxiliary, does not represent and admits that foregoing is prior art.
Utility model content
Main purpose of the present utility model is to provide a kind of Electromagnetic Heating control circuit and electromagnetic heating apparatus, is intended to the cost and the power consumption that reduce circuit design.
To achieve these goals, the utility model provides a kind of Electromagnetic Heating control circuit to comprise control chip, current rectifying and wave filtering circuit, resonant capacitance, switching tube, drive circuit and synchronizing voltage testing circuit;
Described switching tube comprises first end, the second end and the control end for controlling first end and the second end connected state, described first end is connected by the positive output end of resonant capacitance with described current rectifying and wave filtering circuit, and described second end is connected with the negative output terminal of described current rectifying and wave filtering circuit by a current sampling resistor;
Described control chip comprises in-phase voltage input, reverse voltage input, voltage detecting end and signal input part; Described in-phase voltage input and reverse voltage input are connected to the two ends of described resonant capacitance respectively through described synchronizing voltage testing circuit, and described signal output part is connected with described control end by described drive circuit; Described voltage detecting end is connected to the positive output end of current rectifying and wave filtering circuit through described synchronizing voltage testing circuit, the state of switching tube work described in the voltage control that described control chip detects according to described voltage detecting end.
Preferably, described synchronizing voltage testing circuit comprises the first voltage sampling circuit and the second voltage sampling circuit; One end of described first voltage sampling circuit is connected with the positive output end of described current rectifying and wave filtering circuit, and the other end is connected with described in-phase voltage input and voltage detecting end respectively; One end of described second voltage sampling circuit is connected with the first end of described switching tube, and the other end is connected with described reverse voltage input; Described control chip controls the conducting when the connection voltage of described resonant capacitance and switching tube is zero volt (or close to zero volt) of described switching tube according to the voltage swing of described in-phase voltage input and reverse voltage input.
Preferably, described first voltage sampling circuit comprises the first resistance and the second resistance, and one end of described first resistance is connected with the positive output end of described current rectifying and wave filtering circuit, and the other end is connected by the negative output terminal of current rectifying and wave filtering circuit described in described second resistance; The common port of described first resistance and described second resistance is connected to described in-phase voltage input; Described second voltage sampling circuit comprises the 3rd resistance and the 4th resistance, and one end of described 3rd resistance is connected with the first end of described switching tube, and the other end is connected with the negative output terminal of described current rectifying and wave filtering circuit by described 4th resistance; The common port of described 3rd resistance and described 4th resistance is connected to described reverse voltage input.
Preferably, described drive circuit comprises driving chip, the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance, the driving input of wherein said driving chip is connected with described signal output part by the 8th resistance, and described signal output part is connected with preset power by the 5th resistance, the second end being connected to described switching tube after the drive output of described driving chip is connected in series with the 7th resistance by the 6th resistance is connected; Described 6th resistance is connected with the control end of described switching tube with the common port of the 7th resistance.
Preferably, described drive circuit also comprises voltage stabilizing didoe, and the negative electrode of described voltage stabilizing didoe is connected with described control end, and anode is connected with the second end of described switching tube.
Preferably, described current rectifying and wave filtering circuit comprises rectifier bridge stack, inductance and electric capacity, the positive output end of wherein said rectifier bridge stack is connected with described resonant capacitance by described inductance, and the negative output terminal of rectifier bridge stack is connected with the second end of described switching tube by described current sampling resistor; One end of described electric capacity is connected to the common port of described inductance and resonant capacitance, and the other end is connected with the negative output terminal of described rectifier bridge stack.
Preferably, described switching tube is insulated gate bipolar transistor, described first end is the collector electrode of described insulated gate bipolar transistor, and described second end is the emitter of described insulated gate bipolar transistor, and described control end is the gate pole of described insulated gate bipolar transistor.
In addition, for achieving the above object, the utility model also provides a kind of electromagnetic heating apparatus, described electromagnetic heating apparatus comprises Electromagnetic Heating control circuit, and described Electromagnetic Heating control circuit comprises control chip, current rectifying and wave filtering circuit, resonant capacitance, switching tube, drive circuit and synchronizing voltage testing circuit;
Described switching tube comprises first end, the second end and the control end for controlling first end and the second end connected state, described first end is connected by the positive output end of resonant capacitance with described current rectifying and wave filtering circuit, and described second end is connected with the negative output terminal of described current rectifying and wave filtering circuit by a current sampling resistor;
Described control chip comprises in-phase voltage input, reverse voltage input, voltage detecting end and signal input part; Described in-phase voltage input and reverse voltage input are connected to the two ends of described resonant capacitance respectively through described synchronizing voltage testing circuit, and described signal output part is connected with described control end by described drive circuit; Described voltage detecting end is connected to the positive output end of current rectifying and wave filtering circuit through described synchronizing voltage testing circuit, the state of switching tube work described in the voltage control that described control chip detects according to described voltage detecting end.
The utility model embodiment by being directly connected with the output of current rectifying and wave filtering circuit by the voltage detecting end of control chip, thus can carry out power control and the under-voltage overvoltage protection of civil power according to the output end voltage of current rectifying and wave filtering circuit.Relative to prior art by arranging the voltage detecting of voltage sampling circuit to current rectifying and wave filtering circuit input at the input of current rectifying and wave filtering circuit; because the utility model make use of the voltage that synchronizing voltage testing circuit detects the output of current rectifying and wave filtering circuit; and carry out power control and the under-voltage overvoltage protection of civil power, because this reducing cost and the power consumption of circuit design.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model Electromagnetic Heating control circuit preferred embodiment.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of Electromagnetic Heating control circuit, and with reference to Fig. 1, in one embodiment, this Electromagnetic Heating control circuit comprises control chip 10, current rectifying and wave filtering circuit 20, resonant capacitance C1, switching tube Q, drive circuit 30 and synchronizing voltage testing circuit;
Described switching tube Q comprises first end, the second end and the control end for controlling first end and the second end connected state, described first end is connected with the positive output end of described current rectifying and wave filtering circuit 20 by resonant capacitance C1, and described second end is connected with the negative output terminal of described current rectifying and wave filtering circuit 20 by a current sampling resistor R11;
Described control chip 10 comprises in-phase voltage input, reverse voltage input, voltage detecting end and signal input part; Described in-phase voltage input and reverse voltage input are connected to the two ends of described resonant capacitance C1 respectively through described synchronizing voltage testing circuit, and described signal output part is connected with described control end by described drive circuit 30; Described voltage detecting end is connected to the positive output end of current rectifying and wave filtering circuit 20 through described synchronizing voltage testing circuit, the state that described in the voltage control that described control chip 10 detects according to described voltage detecting end, switching tube Q works.
The Electromagnetic Heating control circuit that the present embodiment provides is mainly used in electromagnetic heating apparatus, and such as this electromagnetic heating apparatus can be applied to the equipment such as electromagnetic oven, electric cooker, electric pressure cooker, soy bean milk making machine and insulating pot.Be provided with comparator and AD conversion module in above-mentioned control chip 10, wherein, two inputs of comparator are above-mentioned in-phase voltage input and reverse voltage input, and the input of AD conversion module is above-mentioned voltage detecting end.It should be noted that above-mentioned resonant capacitance C1 is in parallel with electromagnetic coil disk, form antiresonant circuit.
Above-mentioned synchronizing voltage testing circuit is for detecting the voltage at above-mentioned resonant capacitance C1 two ends, control switching tube Q conducting for control chip 10 when the link voltage of resonant capacitance C1 and switching tube Q is zero volt (or close to zero volt), thus realize no-voltage conducting.The input of above-mentioned current rectifying and wave filtering circuit 20 is connected with utility grid; due to the voltage of the input of current rectifying and wave filtering circuit 20 and the voltage in proportion relation of output; the voltage of current rectifying and wave filtering circuit 20 input can be obtained by the voltage detecting current rectifying and wave filtering circuit 20 output, therefore can be able to realize carrying out power control and the under-voltage overvoltage protection of civil power according to the voltage of current rectifying and wave filtering circuit 20 output.
The utility model embodiment by being directly connected with the output of current rectifying and wave filtering circuit 20 by the voltage detecting end of control chip 10, thus can carry out power control and the under-voltage overvoltage protection of civil power according to the output end voltage of current rectifying and wave filtering circuit 20.Relative to prior art by arranging the voltage detecting of voltage sampling circuit to current rectifying and wave filtering circuit 20 input at the input of current rectifying and wave filtering circuit 20; because the utility model make use of the voltage that synchronizing voltage testing circuit detects the output of current rectifying and wave filtering circuit 20; and carry out power control and the under-voltage overvoltage protection of civil power, because this reducing cost and the power consumption of circuit design.
Particularly, based on above-described embodiment, in the present embodiment, above-mentioned synchronizing voltage testing circuit comprises the first voltage sampling circuit and the second voltage sampling circuit; One end of described first voltage sampling circuit is connected with the positive output end of described current rectifying and wave filtering circuit 20, and the other end is connected with described in-phase voltage input and voltage detecting end respectively; One end of described second voltage sampling circuit is connected with the first end of described switching tube Q, the other end and described reverse voltage input; Described control chip 10 controls described switching tube Q conducting when the link voltage of described resonant capacitance C1 and switching tube Q is zero volt (or close to zero volt) according to the voltage swing of described in-phase voltage input and reverse voltage input.
The structure of above-mentioned first voltage sampling circuit and the second voltage sampling circuit can be arranged according to actual needs, in the present embodiment, particularly, above-mentioned first voltage sampling circuit comprises the first resistance R1 and the second resistance R2, one end of described first resistance R1 is connected with the positive output end of described current rectifying and wave filtering circuit 20, and the other end is connected by the negative output terminal of current rectifying and wave filtering circuit 20 described in described second resistance R2; The common port of described first resistance R1 and described second resistance R2 is connected to described in-phase voltage input; Described second voltage sampling circuit comprises the 3rd resistance R3 and the 4th resistance R4, and one end of described 3rd resistance R3 is connected with the first end of described switching tube Q, and the other end is connected with the negative output terminal of described current rectifying and wave filtering circuit 20 by described 4th resistance R4; The common port of described 3rd resistance R3 and described 4th resistance R4 is connected to described reverse voltage input.
It should be noted that resistance and the structure of above-mentioned first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4 can be arranged according to actual needs, as long as the zero crossing that switching tube Q first end voltage can be detected can be realized.In the present embodiment, above-mentioned first resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4 are respectively at least two resistance compositions of connecting successively.
Above-mentioned drive circuit 30 comprises driving chip 31, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8, the driving input of wherein said driving chip 31 is connected with described signal output part by the 8th resistance R8, and described signal output part is connected with preset power VDD by the 5th resistance R5, the drive output of described driving chip 31 is connected by the second end being connected to described switching tube Q after the 6th resistance R6 and the 7th resistance R7 serial connection; Described 6th resistance R6 is connected with the control end of described switching tube Q with the common port of the 7th resistance R7.
In the present embodiment, the signal output part of above-mentioned control chip 10 is used for output pulse width modulation signal, to the driving input of driving chip 31, is exported after preset power VDD and the 5th resistance R5 carries out pull-up to this pulse-width signal by drive output.Drive output export pulse-width signal after the 6th resistance R6 and the 7th resistance R7 carries out dividing potential drop, according to conducting and the shutoff of the voltage swing control switch pipe Q at the 7th resistance R7 two ends.
The level exporting the control end of switching tube Q after pulse-width signal can being carried out voltage and current amplification to it should be noted that the model of above-mentioned driving chip 31 can be arranged according to actual needs, as long as can make switching tube Q conducting.The concrete structure of above-mentioned switching tube Q also can be arranged according to actual needs, in the present embodiment, above-mentioned switching tube Q is preferably insulated gate bipolar transistor, described first end is the collector electrode of described insulated gate bipolar transistor, described second end is the emitter of described insulated gate bipolar transistor, and described control end is the gate pole of described insulated gate bipolar transistor.
Further, in order to prevent the gate drive voltage of insulated gate bipolar transistor excessive, damage insulated gate bipolar transistor, the present embodiment can also arrange protection device.Particularly, in the present embodiment, above-mentioned drive circuit also comprises voltage stabilizing didoe D, and the negative electrode of described voltage stabilizing didoe D is connected with described control end, and anode is connected with second end of described switching tube Q.
In the present embodiment, above by between the gate pole and emitter of insulated gate bipolar transistor, voltage stabilizing didoe D is set, thus when pulse-width signal is high level, the voltage that voltage stabilizing didoe is stable between the gate pole of insulated gate bipolar transistor and emitter, can be not more than.
Particularly, above-mentioned current rectifying and wave filtering circuit 20 comprises rectifier bridge stack 21, inductance L and electric capacity C2, the positive output end of wherein said rectifier bridge stack 21 is connected with described resonant capacitance C2 by described inductance L, and the negative output terminal of rectifier bridge stack 21 is connected with second end of described switching tube Q by described current sampling resistor R11; One end of described electric capacity C2 is connected to the common port of described inductance L and resonant capacitance C1, and the other end is connected with the negative output terminal of described rectifier bridge stack 21.
The utility model also provides a kind of electromagnetic heating apparatus, and this electromagnetic heating apparatus comprises Electromagnetic Heating control circuit, and the structure of this Electromagnetic Heating control circuit can refer to above-described embodiment, does not repeat them here.Naturally, the electromagnetic heating apparatus due to the present embodiment have employed the technical scheme of above-mentioned Electromagnetic Heating control circuit, and therefore this electromagnetic heating apparatus has all beneficial effects of above-mentioned Electromagnetic Heating control circuit.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. an Electromagnetic Heating control circuit, is characterized in that, comprises control chip, current rectifying and wave filtering circuit, resonant capacitance, switching tube, drive circuit and synchronizing voltage testing circuit;
Described switching tube comprises first end, the second end and the control end for controlling first end and the second end connected state, described first end is connected by the positive output end of resonant capacitance with described current rectifying and wave filtering circuit, and described second end is connected with the negative output terminal of described current rectifying and wave filtering circuit by a current sampling resistor;
Described control chip comprises in-phase voltage input, reverse voltage input, voltage detecting end and signal input part; Described in-phase voltage input and reverse voltage input are connected to the two ends of described resonant capacitance respectively through described synchronizing voltage testing circuit, and described signal output part is connected with described control end by described drive circuit; Described voltage detecting end is connected to the positive output end of current rectifying and wave filtering circuit through described synchronizing voltage testing circuit, the state of switching tube work described in the voltage control that described control chip detects according to described voltage detecting end.
2. Electromagnetic Heating control circuit as claimed in claim 1, it is characterized in that, described synchronizing voltage testing circuit comprises the first voltage sampling circuit and the second voltage sampling circuit; One end of described first voltage sampling circuit is connected with the positive output end of described current rectifying and wave filtering circuit, and the other end is connected with described in-phase voltage input and voltage detecting end respectively; One end of described second voltage sampling circuit is connected with the first end of described switching tube, and the other end is connected with described reverse voltage input; Described control chip controls the conducting when the link voltage of described resonant capacitance and switching tube is zero volt (or close to zero volt) of described switching tube according to the voltage swing of described in-phase voltage input and reverse voltage input.
3. Electromagnetic Heating control circuit as claimed in claim 2, it is characterized in that, described first voltage sampling circuit comprises the first resistance and the second resistance, one end of described first resistance is connected with the positive output end of described current rectifying and wave filtering circuit, and the other end is connected by the negative output terminal of current rectifying and wave filtering circuit described in described second resistance; The common port of described first resistance and described second resistance is connected to described in-phase voltage input; Described second voltage sampling circuit comprises the 3rd resistance and the 4th resistance, and one end of described 3rd resistance is connected with the first end of described switching tube, and the other end is connected with the negative output terminal of described current rectifying and wave filtering circuit by described 4th resistance; Described 3rd resistance) be connected to described reverse voltage input with the common port of described 4th resistance.
4. Electromagnetic Heating control circuit as claimed in claim 1, it is characterized in that, described drive circuit comprises driving chip, the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance, the driving input of wherein said driving chip is connected with described signal output part by the 8th resistance, and described signal output part is connected with preset power by the 5th resistance, the second end being connected to described switching tube after the drive output of described driving chip is connected in series with the 7th resistance by the 6th resistance is connected; Described 6th resistance is connected with the control end of described switching tube with the common port of the 7th resistance.
5. Electromagnetic Heating control circuit as claimed in claim 4, it is characterized in that, described drive circuit also comprises voltage stabilizing didoe, and the negative electrode of described voltage stabilizing didoe is connected with described control end, and anode is connected with the second end of described switching tube.
6. Electromagnetic Heating control circuit as claimed in claim 1, it is characterized in that, described current rectifying and wave filtering circuit comprises rectifier bridge stack, inductance and inductance, the positive output end of wherein said rectifier bridge stack is connected with described resonant capacitance by described inductance, and the negative output terminal of rectifier bridge stack is connected with the second end of described switching tube by described current sampling resistor; One end of described inductance is connected to the common port of described inductance and resonant capacitance, and the other end is connected with the negative output terminal of described rectifier bridge stack.
7. Electromagnetic Heating control circuit as claimed in claim 1, it is characterized in that, described switching tube is insulated gate bipolar transistor, described first end is the collector electrode of described insulated gate bipolar transistor, described second end is the emitter of described insulated gate bipolar transistor, and described control end is the gate pole of described insulated gate bipolar transistor.
8. an electromagnetic heating apparatus, is characterized in that, comprises the Electromagnetic Heating control circuit according to any one of claim 1 to 7.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073503.1U CN204362337U (en) | 2015-02-02 | 2015-02-02 | Electromagnetic Heating control circuit and electromagnetic heating apparatus |
| EP15880852.7A EP3255957B1 (en) | 2015-02-02 | 2015-06-30 | Electromagnetic heating control circuit and electromagnetic heating device |
| PCT/CN2015/082969 WO2016123897A1 (en) | 2015-02-02 | 2015-06-30 | Electromagnetic heating control circuit and electromagnetic heating device |
| JP2017540765A JP6473514B2 (en) | 2015-02-02 | 2015-06-30 | Electromagnetic induction heating control circuit and electromagnetic induction heating equipment |
| KR1020177024696A KR102057136B1 (en) | 2015-02-02 | 2015-06-30 | Electromagnetic heating control circuit and electromagnetic heating device |
| US15/665,044 US10638551B2 (en) | 2015-02-02 | 2017-07-31 | Electromagnetic heating control circuit and electromagnetic heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073503.1U CN204362337U (en) | 2015-02-02 | 2015-02-02 | Electromagnetic Heating control circuit and electromagnetic heating apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN204362337U true CN204362337U (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520073503.1U Expired - Fee Related CN204362337U (en) | 2015-02-02 | 2015-02-02 | Electromagnetic Heating control circuit and electromagnetic heating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204362337U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016123897A1 (en) * | 2015-02-02 | 2016-08-11 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control circuit and electromagnetic heating device |
| CN105992416A (en) * | 2015-02-02 | 2016-10-05 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control circuit and electromagnetic heating device |
| CN106714350A (en) * | 2015-07-28 | 2017-05-24 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control system of on-chip system |
| CN107024611A (en) * | 2016-02-02 | 2017-08-08 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heater and its current sample method and current sample module |
| CN107027205A (en) * | 2016-02-02 | 2017-08-08 | 佛山市顺德区美的电热电器制造有限公司 | The drive circuit of power switch pipe in electromagnetic heater and electromagnetic heater |
| CN110892238A (en) * | 2017-06-07 | 2020-03-17 | 赛灵思公司 | Dynamic element matching in integrated circuits |
| EP3644071A4 (en) * | 2017-07-26 | 2020-07-22 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Sampling current processing circuit, power detection circuit and electromagnetic cooking device |
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2015
- 2015-02-02 CN CN201520073503.1U patent/CN204362337U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016123897A1 (en) * | 2015-02-02 | 2016-08-11 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control circuit and electromagnetic heating device |
| CN105992416A (en) * | 2015-02-02 | 2016-10-05 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control circuit and electromagnetic heating device |
| CN105992416B (en) * | 2015-02-02 | 2019-08-27 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control circuit and electromagnetic heating apparatus |
| US10638551B2 (en) | 2015-02-02 | 2020-04-28 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd | Electromagnetic heating control circuit and electromagnetic heating device |
| CN106714350A (en) * | 2015-07-28 | 2017-05-24 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control system of on-chip system |
| CN106714350B (en) * | 2015-07-28 | 2023-03-24 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating control system of system on chip |
| CN107024611A (en) * | 2016-02-02 | 2017-08-08 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heater and its current sample method and current sample module |
| CN107027205A (en) * | 2016-02-02 | 2017-08-08 | 佛山市顺德区美的电热电器制造有限公司 | The drive circuit of power switch pipe in electromagnetic heater and electromagnetic heater |
| CN107027205B (en) * | 2016-02-02 | 2022-12-06 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating device and driving circuit of power switch tube in electromagnetic heating device |
| CN110892238A (en) * | 2017-06-07 | 2020-03-17 | 赛灵思公司 | Dynamic element matching in integrated circuits |
| EP3644071A4 (en) * | 2017-07-26 | 2020-07-22 | Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co., Ltd. | Sampling current processing circuit, power detection circuit and electromagnetic cooking device |
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