CN207975006U - driving circuit - Google Patents
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- CN207975006U CN207975006U CN201820388319.XU CN201820388319U CN207975006U CN 207975006 U CN207975006 U CN 207975006U CN 201820388319 U CN201820388319 U CN 201820388319U CN 207975006 U CN207975006 U CN 207975006U
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Abstract
The utility model provides a kind of driving circuit, belongs to an electro-technical field.The circuit includes：Electric energy release module；Drive control end is connect with the first end of one end of buzzer and electric energy release module respectively, the other end ground connection of buzzer；The second end of electric energy release module and the poles B of triode connect, and the third end of electric energy release module and the poles E of triode are grounded simultaneously；The poles C of triode and one end of wind turbine connect, and the other end of wind turbine is connect with feeder ear.The utility model embodiment at drive control end by exporting the alternate alternating current of height usually, in a period of drive control end exports high level, electric energy release module is in charge inside, during at drive control end, output is low level, electric energy release module is in internal discharge, so that the conduction voltage drop between the second end and third end of electric energy release module is less than the conduction voltage drop between the poles B and the poles E of triode, triode can not be connected always.Therefore, wind turbine continually on and off will not be caused.
Description
Technical field
The utility model is related to family's electro-technical fields, more particularly, to a kind of driving circuit.
Background technology
At present in high-power electric appliance, such as electric cooker, electromagnetic oven, it will usually exist simultaneously buzzer and wind turbine.Wherein, bee
Ring device is mainly used for prompting consumer electronics state in which, and wind turbine is mainly used for radiating, to reduce the Wen Sheng of component.Due to list
The number of the I/O interfaces of piece machine is usually limited, thus in the related art, the drive control end of general wind turbine and the drive of buzzer
Dynamic control terminal shares an I/O interface.Wherein, buzzer works as drive control usually using the alternate exchange level driver of height
Usually, buzzer can work the alternate alternating current of end output height.Wind turbine drives usually using DC level, and wind turbine is typically profit
Push And Release is realized with the on-off action of triode, and when drive control end exports direct current high level, wind turbine can work.Work as buzzer
When needing work, drive control end can export the alternate exchange level of height, and the alternate exchange level of height can lead to wind turbine frequency
Numerous on and off, and blower interior is mainly coil, to which frequent on and off is easy to generate rush of current and leads to coil
It burns, so that wind turbine fails.
Utility model content
To solve the above-mentioned problems, the utility model embodiment provides one kind and overcoming the above problem or solve at least partly
The certainly driving circuit of the above problem.
According to the utility model embodiment in a first aspect, providing a kind of driving circuit, which has triode, should
Circuit includes：Electric energy release module；
Drive control end is connect with the first end of one end of buzzer and electric energy release module respectively, the other end of buzzer
Ground connection；The second end of electric energy release module and the poles B of triode connect, the third end of electric energy release module and the poles E of triode
It is grounded simultaneously；The poles C of triode and one end of wind turbine connect, and the other end of wind turbine is connect with feeder ear；
Wherein, drive control end is for exporting the alternate exchange level of height, the second end and third of electric energy release module
Conduction voltage drop between end is less than the conduction voltage drop between the poles B and the poles E of triode；Electric energy release module is used in drive control
In charge inside in a period of end output high level, and in internal discharge during the output of drive control end is low level.
The circuit that the utility model embodiment provides, by exporting the alternate alternating current of height usually at drive control end,
In a period of drive control end exports high level, electric energy release module exports low level in charge inside, at drive control end
In a period of, electric energy release module is in internal discharge, so that leading between the second end of electric energy release module and third end
Logical pressure drop is less than the conduction voltage drop between the poles B and the poles E of triode, and triode can not be connected always.Therefore, wind turbine will not be caused
Continually on and off, and then the rush of current that wind turbine frequent starting is brought is avoided, improve the security reliability of wind turbine.
In addition, being protected to wind turbine due to not increasing a large amount of protection and compensation circuit, to save circuit
Design cost.Wind turbine and buzzer are driven simultaneously by then passing through the same I/O interfaces, namely by drive control end
It is dynamic, and the drive signal of the two is independent of each other, so as to save resources of chip and circuit volume.
The possible realization method of with reference to first aspect the first, in second of possible realization method, electric energy release
Module includes：First diode, first resistor and capacitance；
Correspondingly, drive control end is connect with one end of the anode of the first diode and first resistor respectively；One or two
The cathode of pole pipe and the other end of first resistor are connect with one end of capacitance simultaneously, and are connect simultaneously with the poles B of triode；Capacitance
The other end and the poles E of triode be grounded simultaneously；
Wherein, the conduction voltage drop of the first diode is less than the conduction voltage drop between the poles B and the poles E of triode.
Second of possible realization method with reference to first aspect, in the third possible realization method, the circuit is also
Including：Second resistance；
One end of second resistance and one end of buzzer connect, the other end of second resistance respectively with drive control end, the
The anode of one diode and one end connection of first resistor.
Second of possible realization method with reference to first aspect, in the 4th kind of possible realization method, the circuit is also
Including：Second diode；
Second diode and fan parallel-connection, the second diode anode connect with feeder ear, the cathode of the second diode and
The poles C of triode connect.
The third possible realization method with reference to first aspect, in the 5th kind of possible realization method, the circuit is also
Including：3rd resistor；
One end of 3rd resistor respectively with the other end of second resistance, the anode of the first diode and first resistor one
End connection, the other end of 3rd resistor are connect with drive control end.
Second of possible realization method with reference to first aspect, in the 6th kind of possible realization method, the circuit is also
Including：Second resistance；
One end of second resistance connects with one end of one end of buzzer, the anode of the first diode and first resistor respectively
It connects, the other end of second resistance is connect with drive control end.
Second of possible realization method with reference to first aspect, in the 7th kind of possible realization method, the circuit is also
Including：4th resistance；
One end of 4th resistance is connect with the cathode of the first diode, and the other end of the 4th resistance is respectively at first resistor
The poles B of the other end, one end of capacitance and triode connect.
Second aspect according to the present utility model provides a kind of household electrical appliances, which has the various possibility of first aspect
The driving circuit that any realization method is provided in realization method.
It should be understood that above general description and following detailed description is exemplary and explanatory, it can not
Limit the utility model.
Description of the drawings
Fig. 1 is a kind of voltage change schematic diagram of capacitor charging of the utility model embodiment；
Fig. 2 is a kind of structural schematic diagram of driving circuit of the utility model embodiment；
Fig. 3 is a kind of structural schematic diagram of driving circuit of the utility model embodiment；
Fig. 4 is a kind of structural schematic diagram of driving circuit of the utility model embodiment；
Fig. 5 is a kind of structural schematic diagram of driving circuit of the utility model embodiment.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
At present in high-power electric appliance, the drive control end of wind turbine and the drive control end of buzzer generally share an I/
O Interface.Wherein, buzzer is handed over usually using the alternate exchange level driver of height when drive control end output height is alternate
Usually, buzzer can work galvanic electricity.Wind turbine drives usually using DC level, and wind turbine is typically the on-off action using triode
Realize Push And Release, when drive control end exports direct current high level, wind turbine can work.When buzzer needs work, driving control
End processed can export the alternate exchange level of height, and the alternate exchange level of height can lead to the frequent on and off of wind turbine, and wind turbine
Inside is mainly coil, to which frequent on and off is easy to generate rush of current and leads to coil burnout, so that wind turbine
Failure.
In view of the above-mentioned problems, the utility model embodiment provides a kind of driving circuit.Wherein, which has three
Pole pipe Q081.The driving circuit includes：Electric energy release module.
Drive control end DRV is connect with the first end of one end of buzzer BL031 and electric energy release module respectively, buzzer
The other end of BL031 is grounded；The second end of electric energy release module is connect with the poles B of triode Q081, and the of electric energy release module
Three ends and the poles E of triode Q081 are grounded simultaneously；The poles C of triode Q081 are connect with one end of wind turbine FAN, and wind turbine FAN's is another
One end is connect with feeder ear；
Wherein, drive control end DRV is for exporting the alternate exchange level of height, the second end of electric energy release module and the
The conduction voltage drop between the poles B and the poles E of the conduction voltage drop less than triode Q081 between three ends；Electric energy release module is for driving
In charge inside in a period of dynamic control terminal DRV outputs high level, and during DRV outputs in drive control end are low level
Internal discharge.
The circuit that the utility model embodiment provides, by the alternate exchange level of drive control end DRV output height
When, in a period of at drive control end, DRV exports high level, electric energy release module is in charge inside, and at drive control end, DRV is defeated
Go out it is low level during, electric energy release module is in internal discharge, so that the second end of electric energy release module and third end
Between B pole and E pole of the conduction voltage drop less than triode Q081 between conduction voltage drop, triode Q081 can not be connected always.
Therefore, wind turbine FAN continually on and off will not be caused, and then avoids the rush of current that wind turbine FAN frequent startings are brought, is improved
The security reliability of wind turbine FAN.
In addition, being protected to wind turbine FAN due to not increasing a large amount of protection and compensation circuit, to save electricity
Road design cost.Finally, due to be by the same I/O interfaces, namely by drive control end DRV simultaneously to wind turbine FAN with
And buzzer BL031 is driven, and the drive signal of the two is independent of each other, so as to save resources of chip and circuit volume.
As a kind of alternative embodiment, electric energy release module includes：First diode D082, first resistor R083 and capacitance
C081；
Correspondingly, one end with the anode of the first diode D082 and first resistor R083 respectively drive control end DRV
Connection；The cathode of first diode D082 is connect with one end of capacitance C081 simultaneously with the other end of first resistor R083, and same
When connect with the poles B of triode Q081；The other end of capacitance C081 and the poles E of triode Q081 are grounded simultaneously；
Wherein, the conduction voltage drop between the poles B and the poles E of the conduction voltage drop of the first diode D082 less than triode Q081.
In above-mentioned driving circuit, buzzer BL031 can be passive buzzer, provide AC signal and generate buzzing
Sound.Wind turbine FAN is DC fan, and being passed through direct current signal can operate, and for triode Q081 for switching wind turbine FAN, this practicality is new
Type embodiment is not especially limited this.First resistor R083 and capacitance C081 form RC filter circuits, for slowing down driving control
The rise time of end DRV processed high level when exporting AC signal.Feeder ear can be wind turbine FAN power supplies, such as the power supply of 18V
End, the utility model embodiment are not especially limited this.
Drive control end DRV is used for output drive signal, and drive signal can be direct current low level, direct current high level or height
Low alternate exchange level, the utility model embodiment are not especially limited this.Wind turbine FAN is driven by direct current high level, bee
Device BL031 ring by just alternately exchanging level driver.When drive control end DRV exports direct current high level, wind turbine FAN operatings
Work, buzzer BL031 do not generate buzzing.When drive control end DRV exports direct current low level, wind turbine FAN does not work, buzzing
Device BL031 does not generate buzzing.
When alternately usually, wind turbine FAN's alternating current does not work drive control end DRV outputs height, buzzer BL031 is generated
Buzzing.Wherein, in a period of exporting high level, drive control end DRV is charged by first resistor R083 to capacitance C081.Such as
Shown in Fig. 1, exponentially rule rises the voltage of capacitance C081.
During exporting low level, capacitance C081 passes through the first diode D082 electric discharges namely the first diode
D082 provides Releasing loop for the voltage on capacitance C081, and high level is exported in drive control end DRV to discharge capacitance C081
During stored charge.Wherein, between the poles B and the poles E of the conduction voltage drop of the first diode D082 less than triode Q081
Conduction voltage drop, and the voltage after capacitance C081 charging is consistently less than the poles B and the extremely corresponding conduction voltage drops of E of triode Q081.
Wherein, the poles B of triode Q081 and the extremely corresponding conduction voltage drops of E can be 0.7v, and the first diode D082 can be Schottky
Diode and conduction voltage drop are 0.3V, and the utility model embodiment is not especially limited this.
May make triode Q081 always by above-mentioned two condition cannot be connected, namely work as buzzer at work, wind
Machine FAN can't export the alternate exchange level of height and continually on and off with drive control end DRV, to generate
Rush of current, and then can ensure the security reliability of wind turbine FAN.It should be noted that by controlling AC signal frequency, can make
The poles B and the extremely corresponding conduction voltage drops of E that the voltage after capacitance C081 chargings is consistently less than triode Q081 are obtained, the utility model is real
Example is applied to be not especially limited this.
For example, being 0.7v, the conducting of the first diode D082 with the extremely corresponding conduction voltage drop of the poles B of triode Q081 and E
For pressure drop is 0.3V.If drive control end DRV exports the alternating current of 4Khz usually, low and high level alternate cycle is 250us.
Wherein, the high level in a cycle corresponds to 125us, and the low level in a cycle corresponds to 125us.In the high level 125us phases
Between, drive control end DRV is charged by first resistor R083 to capacitance C081, and exponentially rule rises the voltage of capacitance C081.
But since the time is shorter, after 125us, voltage rise less than 0.7v, namely be not achieved triode Q081 the poles B and E it is extremely right
The conduction voltage drop answered.During low level 125us, capacitance C081 starts to discharge rapidly by the first diode D082.By upper
Process in cycles is stated, 0.7v is not achieved in the voltage on capacitance C081 always, and triode Q081 can not be connected always, to not
It can cause wind turbine FAN continually on and off.
The circuit that the utility model embodiment provides, by the alternate exchange level of drive control end DRV output height
When, in a period of exporting high level, drive control end DRV is charged to capacitance C081 by first resistor R083 and capacitance C081
Voltage after charging is consistently less than the poles B and the extremely corresponding conduction voltage drops of C of triode Q081, during exporting low level,
Capacitance C081 is by the first diode D082 electric discharges, so that Q081 pairs of triode is not achieved in the voltage on capacitance C081 always
The conduction voltage drop answered, triode Q081 can not be connected always.Therefore, wind turbine FAN continually on and off will not be caused, and then is avoided
The rush of current that wind turbine FAN frequent startings are brought, improves the security reliability of wind turbine FAN.
Content based on above-described embodiment, it is contemplated that, may if drive control end DRV is directly connect with buzzer BL031
Larger electric current is will produce, to be used as a kind of alternative embodiment, the driving circuit that the utility model embodiment provides can be with
Including：Second resistance R031；One end of second resistance R031 is connect with one end of buzzer BL031, and second resistance R031's is another
One end is connect with one end of drive control end BRV, the anode of the first diode D082 and first resistor R083 respectively.Wherein,
Second resistance R031 connects with buzzer BL031, can be used as buzzer current-limiting resistance.
Content based on above-described embodiment, due to working as wind turbine FAN when off, it is electronic that fan coil will produce reverse induction
Gesture may damage driving circuit, to be used as a kind of alternative embodiment, the driving that the utility model embodiment provides
Circuit can also include：Second diode D081；
Second diode D081 is in parallel with wind turbine FAN, and the anode of the second diode D081 is connect with feeder ear, the two or two pole
The cathode of pipe D081 is connect with the poles C of triode Q081.Wherein, the second diode D081 is backward voltage absorption diode, with
When wind turbine FAN is turned off, the reverse induction electromotive force that fan coil generates is absorbed.
Wherein, while including that the driving circuit of second resistance R031 and the second diode D081 can be as shown in Figure 2.
Content based on above-described embodiment, it is contemplated that light thinks BL031 points of buzzer with the possible deficiencies of second resistance R031
Stream, and in order to discharge the voltage on capacitance C081 as early as possible, to be used as a kind of alternative embodiment, the utility model embodiment to provide
Driving circuit can also include：3rd resistor R032；One end of 3rd resistor R032 is another with second resistance R031 respectively
One end connection at end, the anode of the first diode D081 and first resistor R083, the other end of 3rd resistor R032 and driving
Control terminal DRV connections.
Wherein, while to include the driving circuit of second resistance R031, the second diode D081 and 3rd resistor R032 can join
It examines shown in Fig. 3.
Since 3rd resistor R032 connects with buzzer BL031, so as to be shunted for buzzer BL031.In addition, due to
3rd resistor R032 connects with the first diode D081, so as to assist to discharge the voltage on capacitance C081, Jin Erzeng as early as possible
The strong protection to wind turbine FAN.
Content based on above-described embodiment, if due in the way of in above-described embodiment, while setting in the driving circuit
Second resistance R031 and 3rd resistor R032 is set, the waste of component is likely to result in, to be used as a kind of alternative embodiment, this
The driving circuit that utility model embodiment provides can only include second resistance R031；One end of second resistance R031 respectively with buzzing
One end of one end of device BL031, the anode of the first diode D081 and first resistor R083 connects, and second resistance R031's is another
One end is connect with drive control end BRV.
Wherein, while including that the driving circuit of second resistance R031 and the second diode D081 can refer to shown in Fig. 4.
Since second resistance R031 connects with buzzer BL031, so as to be shunted for buzzer BL031.In addition, due to
Second resistance R031 connects with the first diode D081, so as to assist to discharge the voltage on capacitance C081, Jin Erzeng as early as possible
The strong protection to wind turbine FAN.
Content based on above-described embodiment, in order to discharge the voltage on capacitance C081 as early as possible, to be used as a kind of optional reality
Example is applied, the driving circuit that the utility model embodiment provides can also include：4th resistance R082；One end of 4th resistance R082
It is connect with the cathode of the first diode D081, the other end, the electricity of the other end of the 4th resistance R082 respectively at first resistor R083
Hold one end of C081 and the poles the B connection of triode Q081.
Wherein, while to include the driving circuit of second resistance R031, the second diode D081 and the 4th resistance R082 can join
It examines shown in Fig. 5.
It should be noted that the specification of the resistance arrived involved in above-mentioned any embodiment, capacitance, diode, triode, it can
Voluntarily it is arranged according to demand, the utility model embodiment is not especially limited this.
Above-mentioned all optional technical solutions, may be used the alternative embodiment that any combination forms the utility model, herein
No longer repeat one by one.
Content based on above-described embodiment, the utility model embodiment provide a kind of real based on above-mentioned arbitrary driving circuit
Apply the wind turbine driving method of example.Wherein, driving circuit has triode Q081.This method includes：When drive control end DRV is exported
Usually, wind turbine FAN's alternate alternating current of height shuts down, and buzzer BL031 generates buzzing；
Wherein, in a period of drive control end DRV exports high level, electric energy release module is driving in charge inside
During control terminal DRV outputs are low level, electric energy release module is in internal discharge, the second end and third of electric energy release module
The conduction voltage drop between the poles B and the poles E of the conduction voltage drop less than triode Q081 between end.
The method that the utility model embodiment provides, by the alternate exchange level of drive control end DRV output height
When, in a period of at drive control end, DRV exports high level, electric energy release module is in charge inside, and at drive control end, DRV is defeated
Go out it is low level during, electric energy release module is in internal discharge, so that the second end of electric energy release module and third end
Between B pole and E pole of the conduction voltage drop less than triode Q081 between conduction voltage drop, triode Q081 can not be connected always.
Therefore, wind turbine FAN continually on and off will not be caused, and then avoids the rush of current that wind turbine FAN frequent startings are brought, is improved
The security reliability of wind turbine FAN.
In addition, being protected to wind turbine FAN due to not increasing a large amount of protection and compensation circuit, to save electricity
Road design cost.By then passing through the same I/O interfaces, namely by drive control end DRV simultaneously to wind turbine FAN and buzzing
Device BL031 is driven, and the drive signal of the two is independent of each other, so as to save resources of chip and circuit volume.
As a kind of alternative embodiment, electric energy release module includes：First diode D082, first resistor R083 and capacitance
C081；
Correspondingly, in a period of drive control end DRV exports high level, drive control end DRV passes through first resistor
R083 is consistently less than the poles B of triode Q081 to the voltage after capacitance C081 charging and capacitance C081 chargings and E is extremely corresponding leads
Logical pressure drop, during at drive control end, DRV outputs are low level, capacitance C081 is discharged by the first diode D082；
Wherein, the conduction voltage drop between the poles B and the poles E of the conduction voltage drop of the first diode D082 less than triode Q081.
The method that the utility model embodiment provides, by the alternate exchange level of drive control end DRV output height
When, in a period of exporting high level, drive control end DRV is charged to capacitance C081 by first resistor R083 and capacitance C081
Voltage after charging is consistently less than the poles B and the extremely corresponding conduction voltage drops of E of triode Q081, during exporting low level,
Capacitance C081 is by the first diode D082 electric discharges, so that Q081 pairs of triode is not achieved in the voltage on capacitance C081 always
The conduction voltage drop answered, triode Q081 can not be connected always.Therefore, wind turbine FAN continually on and off will not be caused, and then is avoided
The rush of current that wind turbine FAN frequent startings are brought, improves the security reliability of wind turbine FAN.
Above-mentioned all optional technical solutions, may be used the alternative embodiment that any combination forms the utility model, herein
No longer repeat one by one.
Content based on above-described embodiment, the utility model embodiment provide a kind of household electrical appliances, which has above-mentioned
The driving circuit that meaning embodiment is provided.Based on the function of wind turbine FAN heat dissipations, which can be high-power electric appliance, such as electric meal
Pot, electromagnetic oven etc., the utility model embodiment is not especially limited this.
Finally, the circuit of the application is only preferable embodiment, is not intended to limit the scope of protection of the utility model.
Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should be included in this reality
Within novel protection domain.
Claims (8)
1. a kind of driving circuit, the circuit has triode, which is characterized in that including：Electric energy release module；
Drive control end is connect with the first end of one end of buzzer and the electric energy release module respectively, the buzzer it is another
One end is grounded；The second end of the electric energy release module is connect with the poles B of the triode, the third of the electric energy release module
The poles E with the triode are held to be grounded simultaneously；The poles C of the triode and one end of wind turbine connect, the other end of the wind turbine
It is connect with feeder ear；
Wherein, the drive control end is for exporting the alternate exchange level of height, the second end of the electric energy release module and
Conduction voltage drop between third end is less than the conduction voltage drop between the poles B and the poles E of the triode；The electric energy release module is used
In charge inside in a period of exporting high level at the drive control end, and it is low level in drive control end output
During in internal discharge.
2. circuit according to claim 1, which is characterized in that the electric energy release module includes：First diode, first
Resistance and capacitance；
Correspondingly, the drive control end connects with one end of the positive and described first resistor of first diode respectively
It connects；The cathode of first diode is connect with one end of the capacitance simultaneously with the other end of the first resistor, and simultaneously
It is connect with the poles B of the triode；The other end of the capacitance and the poles E of the triode are grounded simultaneously；
Wherein, the conduction voltage drop of first diode is less than the conduction voltage drop between the poles B and the poles E of the triode.
3. circuit according to claim 2, which is characterized in that further include：Second resistance；
One end of the second resistance is connect with one end of the buzzer, the other end of the second resistance respectively with the drive
One end connection of dynamic control terminal, the positive and described first resistor of first diode.
4. circuit according to claim 2, which is characterized in that further include：Second diode；
The anode of second diode and the fan parallel-connection, second diode is connect with the feeder ear, and described the
The cathode of two diodes is connect with the poles C of the triode.
5. circuit according to claim 3, which is characterized in that further include：3rd resistor；
One end of the 3rd resistor respectively with the other end of the second resistance, the anode of first diode and described
One end of first resistor connects, and the other end of the 3rd resistor is connect with the drive control end.
6. circuit according to claim 2, which is characterized in that further include：Second resistance；
One end of the second resistance respectively with one end of the buzzer, first diode positive and described first
One end of resistance connects, and the other end of the second resistance is connect with the drive control end.
7. circuit according to claim 2, which is characterized in that further include：4th resistance；
One end of 4th resistance is connect with the cathode of first diode, and the other end of the 4th resistance is respectively at institute
State the poles the B connection of the other end of first resistor, one end of the capacitance and the triode.
8. a kind of household electrical appliances, which is characterized in that the household electrical appliances have the driving circuit described in any one of claim 1 to 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820388319.XU CN207975006U (en) | 2018-03-21 | 2018-03-21 | driving circuit |
| PCT/CN2018/100602 WO2019179009A1 (en) | 2018-03-21 | 2018-08-15 | Cooking control method and apparatus, cookware and computer-readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820388319.XU CN207975006U (en) | 2018-03-21 | 2018-03-21 | driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207975006U true CN207975006U (en) | 2018-10-16 |
Family
ID=63766025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820388319.XU Withdrawn - After Issue CN207975006U (en) | 2018-03-21 | 2018-03-21 | driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207975006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296094A (en) * | 2018-03-21 | 2019-10-01 | 佛山市顺德区美的电热电器制造有限公司 | Driving circuit and method |
| CN112365869A (en) * | 2020-10-09 | 2021-02-12 | 华帝股份有限公司 | Single IO controlled buzzer circuit and control method thereof |
-
2018
- 2018-03-21 CN CN201820388319.XU patent/CN207975006U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296094A (en) * | 2018-03-21 | 2019-10-01 | 佛山市顺德区美的电热电器制造有限公司 | Driving circuit and method |
| CN110296094B (en) * | 2018-03-21 | 2024-07-19 | 佛山市顺德区美的电热电器制造有限公司 | Driving circuit and method |
| CN112365869A (en) * | 2020-10-09 | 2021-02-12 | 华帝股份有限公司 | Single IO controlled buzzer circuit and control method thereof |
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