CN209215904U - Microcontroller power supply control circuit, single chip circuit and electrical equipment - Google Patents
Microcontroller power supply control circuit, single chip circuit and electrical equipment Download PDFInfo
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- CN209215904U CN209215904U CN201822240195.3U CN201822240195U CN209215904U CN 209215904 U CN209215904 U CN 209215904U CN 201822240195 U CN201822240195 U CN 201822240195U CN 209215904 U CN209215904 U CN 209215904U
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Abstract
The utility model discloses a kind of microcontroller power supply control circuit, single chip circuit and electrical equipment, which includes: first switch, and first end is connect with external power supply, and first resistor is connected between first end and control terminal；Second resistance is connected between the control terminal of second switch, first end and first switch, second end is connect with ground wire；The control terminal of 3rd resistor, first end and second switch connects, and second end is connect with control signal；The second end of Voltage stabilizing module, input terminal and first switch connects, and output end is connect with the power input of single-chip microcontroller to be controlled.When circuit is in standby, control signal exports high level, and the first and second switch conduction, Voltage stabilizing module conducting, single-chip microcontroller to be controlled obtains electric；Single-chip microcontroller to be controlled needs to enter standby mode, and control signal exports low level, the first and second switch OFF, and Voltage stabilizing module powers off, and single-chip microcontroller power-off, all components of circuit are in off-position, and output power consumption is zero-power, reduces power consumption.
Description
Technical field
The utility model relates to technical field of electric appliances, and in particular to a kind of microcontroller power supply control circuit, single chip circuit
And electrical equipment.
Background technique
In order to realize low-power consumption, many household electrical appliance can enter standby mode, multi-pass mistake after normal use mode
The above-mentioned control of chip microcontroller.The power control system of existing single-chip microcontroller is as shown in Figure 1, the power control system 200 includes:
Internal pressure stabilizing source module 203, be connected with single-chip microcontroller kernel 201 (single-chip microcontroller kernel 201 with internal pressure stabilizing source module 203 together
Constitute single-chip microcontroller 207), for supplying normal current to single-chip microcontroller kernel 201 when single-chip microcontroller 207 is in normal mode, entering
Low power consumpting state or closed state are entered according to the instruction of single-chip microcontroller kernel 201 when battery saving mode；External pressure stabilizing source module
209, it is connected respectively with external power supply and internal pressure stabilizing source module 203, for being supplied to after increasing the voltage of external power supply
Internal pressure stabilizing source module 203；Key 213 is waken up, enters normal mode for needing to wake up from battery saving mode in single-chip microcontroller 207
When be pressed, generate wake up instruction；Energy supply control module 205, respectively with single-chip microcontroller kernel 201, external pressure stabilizing source module 209,
Internal pressure stabilizing source module 203 with wake up key 213 be connected, for enter battery saving mode when according to single-chip microcontroller kernel 201
It instructs and closes external pressure stabilizing source module 209, when entering normal mode according to steady inside the wake up instruction unlatching for waking up key 213
Potential source module 203 and external pressure stabilizing source module 209, and single-chip microcontroller kernel 201 is notified to be prepared to enter into normal mode；And it unidirectionally leads
Logical module 211, is connected with single-chip microcontroller kernel 201 and external power supply respectively, for supplying low tension to single-chip microcontroller kernel 201
Source maintains the partial circuit work in single-chip microcontroller kernel 201, after single-chip microcontroller 207 enters battery saving mode to wait single-chip microcontroller 207
It is waken up and enters normal mode.
Above-mentioned power control system 200 is equal in the whole process due to energy supply control module 205 and one-way conduction module 211
In electriferous state, certain electric energy, and the single-chip microcontroller kernel after entering battery saving mode of single-chip microcontroller 207 itself can be all consumed
Partial circuit in 201 still have it is in running order with wait be waken up, even under low-power consumption mode, it is still necessary to consumption electricity
Can, it can not further reduce the stand-by power consumption of single-chip microcontroller and entire single chip circuit system.
Utility model content
In view of this, the utility model embodiment provides a kind of microcontroller power supply control circuit, single chip circuit and electricity
Device equipment, to solve the problems, such as that electrical equipment power consumption is high in the prior art.
According in a first aspect, the utility model embodiment provides a kind of microcontroller power supply control circuit, comprising: the first electricity
Resistance；The first end of first switch, first switch is connect with external power supply, the control of the first end and first switch of the first switch
The first resistor is connected between end processed；Second resistance；Second switch, the first end of second switch and the first switch
The second resistance is connected between control terminal, the second end of second switch is connect with ground wire；3rd resistor, the of 3rd resistor
The connection of the control terminal of one end and second switch, second end are connect with control signal；The of Voltage stabilizing module, input terminal and first switch
The connection of two ends, output end are connect with the power input of single-chip microcontroller to be controlled.
Optionally, further includes: the first filter module is connected in parallel between the input terminal and ground wire of the Voltage stabilizing module；
And/or second filter module, it is connected in parallel between the output end and ground wire of the Voltage stabilizing module.
Optionally, further includes: voltage reduction module, one end are connect with the second end of the first switch, the other end and described steady
The input terminal of die block connects.
Optionally, further includes: pull down resistor, and be connected between the control terminal and ground wire of the second switch.
Optionally, further includes: overcurrent protection module is connected in series in the first of the external power supply and the first switch
Between end.
Optionally, further includes: diode, cathode are connect with external push button signalling end；Anode and the single-chip microcontroller to be controlled
Count signal test side connection.
Optionally, further includes: voltage acquisition module, input terminal are connect with pwm signal, output end and single-chip microcontroller to be controlled
Voltage detection terminal connection.
Optionally, the voltage acquisition module includes: the 7th resistance, and the first end of the 7th resistance is connect with pwm signal, the
Seven resistance second ends are connect with the voltage detection terminal of single-chip microcontroller to be controlled；8th resistance, the first end of the 8th resistance and the 7th electricity
The second end of resistance connects, and the second end of the 8th resistance is connect with ground wire.
Optionally, the voltage acquisition module further include: third filter module is connected in parallel in the second end of the 7th resistance
Between ground wire.
According to second aspect, the utility model embodiment provides a kind of single chip circuit, comprising: single-chip microcontroller；Power supply control
Circuit processed is connect with the power input port of the single-chip microcontroller, and the microcontroller power supply control circuit uses such as the utility model
Any microcontroller power supply control circuit in first aspect.
According to the third aspect, the utility model embodiment provides a kind of electrical equipment, including such as the utility model second
Single chip circuit described in aspect.
Technical solutions of the utility model have the advantages that
Microcontroller power supply control circuit provided by the utility model, comprising: first resistor；First switch, first switch
First end is connect with external power supply, and described first is connected between the first end of the first switch and the control terminal of first switch
Resistance；Second resistance；Second switch is connected with described between the first end of second switch and the control terminal of the first switch
The second end of two resistance, second switch is connect with ground wire；3rd resistor, the first end of 3rd resistor and the control terminal of second switch
Connection, second end are connect with control signal；The second end of Voltage stabilizing module, input terminal and first switch connects, output end with it is to be controlled
The power input of single-chip microcontroller processed connects.Above-mentioned microcontroller power supply control circuit, when circuit is in standby, control signal is defeated
High level wakes up entire circuit out, control first switch and the second switch conducting, and then controls the conducting of Voltage stabilizing module, pressure stabilizing
It is electric that the voltage supply single-chip microcontroller exported after module conducting obtains the power supply of single-chip microcontroller, realizes the corresponding logic control of single-chip microcontroller, to
Single-chip microcontroller needs to enter standby mode after completing control operation, and control signal exports low level, and control first switch and second is opened
Shutdown, Voltage stabilizing module power-off, single-chip microcontroller also power off, and entire circuit enters standby mode, at this point, all members in entire circuit
Device is in off-position, and output power consumption of the entire circuit in standby mode is zero-power, reduces power consumption.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of a specific example of the power control system of single-chip microcontroller in the prior art；
Fig. 2 is the schematic diagram of a specific example of the microcontroller power supply control circuit of the utility model embodiment；
Fig. 3 is the schematic diagram of another specific example of the microcontroller power supply control circuit of the utility model embodiment；
Fig. 4 is the schematic diagram of another specific example of the microcontroller power supply control circuit of the utility model embodiment；
Fig. 5 is the schematic diagram of another specific example of the microcontroller power supply control circuit of the utility model embodiment.
Appended drawing reference:
Q7, first switch；Q9, second switch；U, Voltage stabilizing module；C, single-chip microcontroller；R33, first resistor；R36, the second electricity
Resistance；R42,3rd resistor；R7, the 4th resistance；R8, the 5th resistance；R26, the 7th resistance；R30, the 8th resistance；R28, protection electricity
Resistance；C10, the first filter capacitor；C13, the second filter capacitor；C14, third filter capacitor；C29, the 4th filter capacitor；R47, under
Pull-up resistor；D5, diode.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those skilled in the art's every other embodiment obtained without creative efforts, belongs to this reality
With novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
The utility model embodiment provides a kind of microcontroller power supply control circuit, can be applied to dust catcher, machine of sweeping the floor
In the electrical equipments such as people, the Zero-power-consumption standby of electrical equipment is realized, reduce the power consumption of electrical equipment, as shown in Figure 2, comprising:
First resistor R33, first switch Q7, second resistance R36, second switch Q9, Voltage stabilizing module U and 3rd resistor R42.
Wherein, the first end of first switch Q7 is connect with external power supply P, the first end and first switch Q7 of first switch Q7
Control terminal between be connected with first resistor R33；It is connected between the first end of second switch Q9 and the control terminal of first switch Q7
There is second resistance R36, the second end of second switch Q9 is connect with ground wire GND；The first end and second switch Q9 of 3rd resistor R42
Control terminal connection, the second end of 3rd resistor R42 connect with signal PWM/VSP is controlled；The input terminal of Voltage stabilizing module U and first
The second end of switch Q7 connects, and the output end of Voltage stabilizing module U is connect with the power input of single-chip microcontroller to be controlled.
In one embodiment, first switch Q7 and second switch Q9 is triode, and specifically, first switch Q7 is PNP
The triode of type, second switch Q9 are the triode of NPN type.Certainly, in other embodiments, above-mentioned switch can also be MOS
The switching devices such as pipe, IGBT, rationally setting, the present embodiment are not intended to be limited in any this as needed.
In one embodiment, Voltage stabilizing module U can be voltage stabilizing chip, such as 78M05 chip；Certainly, in other embodiments
In, other voltage regulator circuits in the prior art also can be used and realize that the present embodiment is not intended to be limited in any this, as needed rationally
Setting.
The specific work process of the microcontroller power supply control circuit is as follows: control signal PWM/VSP output high level, and second
The control terminal voltage of first switch Q7 is pulled down to low level, first switch Q7 conducting by switch Q9 conducting, and Voltage stabilizing module U is powered on,
Its output voltage for exporting the end VD is high level, and high level controls single-chip microcontroller to be controlled and powers on；It is low to control signal PWM/VSP output
Level, second switch Q9 shutdown, first switch Q7 shutdown, Voltage stabilizing module U shutdown, the output voltage at the output end VD are low electricity
Flat, low level control single-chip microcontroller to be controlled turns off, and all components in entire circuit are in off-position, and entire circuit exists
Output power consumption when standby mode is zero-power, reduces power consumption.
Above-mentioned microcontroller power supply control circuit, when circuit is in standby, control signal output high level will entire electricity
Road wakes up, control first switch and the second switch conducting, and then controls the conducting of Voltage stabilizing module, exports after Voltage stabilizing module conducting
It is electric that voltage supply single-chip microcontroller obtains the power supply of single-chip microcontroller, realizes the corresponding logic control of single-chip microcontroller, completes control behaviour to single-chip microcontroller
Need to enter standby mode after work, control signal exports low level, and control first switch and the second switch turns off, and Voltage stabilizing module is disconnected
Electricity, single-chip microcontroller also power off, and entire circuit enters standby mode, at this point, all components in entire circuit are in power-off shape
State, output power consumption of the entire circuit in standby mode are zero-power, reduce power consumption.
In one embodiment, microcontroller power supply control circuit further include: the first filter module is connected in parallel in Voltage stabilizing module
Between the input terminal and ground wire GND of U, for filtering out the electric signal interference of input Voltage stabilizing module, stablize input voltage；Second filtering
Module is connected in parallel between the output end of Voltage stabilizing module U and ground wire GND, for filtering out the electric signal of Voltage stabilizing module output end
Interference, stabilizes the output voltage.
Specifically, as shown in figure 3, the first filter module can be the first filter capacitor C10, filter circuit is simple；Certainly,
In other embodiments, the first filter module can also other filter circuits in the prior art, such as RLC filtering or RC filtering,
Rationally setting as needed.Second filter module can be the second filter capacitor C13 being connected in parallel and third filtered electrical
Hold C14, one filters out high-frequency signal, another filters out low frequency signal, and filter effect is preferable, filter circuit is simple；Certainly, at it
In its embodiment, the second filter module can also other filter circuits in the prior art, such as RLC filtering or RC filtering, according to
It needs rationally to be arranged.
It should be noted that Zero-power-consumption standby wake-up circuit can only include the first filtering in other alternative embodiments
This with no restriction, is rationally arranged in module or the second filter module, the present embodiment according to the actual situation.
In one embodiment, microcontroller power supply control circuit further include: the second end of voltage reduction module, one end and first switch
The input terminal of connection, the other end and Voltage stabilizing module connects.Specifically, as shown in figure 3, voltage reduction module can be dropping resistor, drop
Piezoresistance includes the 4th resistance R7 and the 5th resistance R8 being connected in parallel, one end after being connected in parallel and the second of first switch Q7
End connection, the other end connect with the input terminal of Voltage stabilizing module U, for by the voltage drop of first switch Q7 second end down to voltage-stablizer
In the range of input terminal allows.
In one embodiment, microcontroller power supply control circuit as shown in Figure 3 further include: pull down resistor R47, and connect connection
Between the control terminal and ground wire GND of second switch Q9；For stablizing the input voltage of second switch Q9 control terminal, in control terminal
Voltage realizes effectively drop-down when being in low potential, guarantee that second switch will not mislead, improve the reliability of entire circuit.
In one embodiment, microcontroller power supply control circuit further include: overcurrent protection module is connected in series in external power supply
Between P and the first end of first switch Q7.Specifically, as shown in figure 3, overcurrent protection module can be protective resistance R28, series connection
It is connected between external power supply P and the first end of first switch Q7, the effect of protective resistance R28 is that short circuit occurs in late-class circuit
Shi Fasheng fusing is played the role of protecting late-class circuit, and current limliting when powered on moment, can inhibit the high current for powering on generation.
Certainly, in other embodiments, overcurrent protection module also can be used other protective devices in the prior art and realize, such as fuse
Device (FUSE) etc., as needed rationally setting.
In one embodiment, as shown in figure 3, microcontroller power supply control circuit further include: diode D5, the yin of diode D5
Pole K is connect with external push button signalling end, and the count signal test side KEY of the anode A of diode D5 and single-chip microprocessor MCU to be controlled connects
It connects, the KEY signal for inputting to count signal test side counts, and single-chip microcontroller realizes logic control according to count signal.
It should be noted that the anode of the diode in the present embodiment is also connected with pull-up resistor, pull-up resistor be can be
Pull-up resistor inside single-chip microcontroller, in enabling signal ON/OFF connection low level, diode D5 conducting, count signal test side
The KEY signal of input becomes low level, and single-chip microcontroller is counted according to low level number.Certainly, in other embodiments, may be used
To be external pull-up resistor, rationally setting, the present embodiment are not intended to be limited in any this as needed.
In one embodiment, external push button signalling end connects touch-switch, and after touch-switch is pressed, the end ON/OFF is connected to
GND, diode D5 conducting, the end KEY export low level, and after touch-switch release, the end ON/OFF is connected to high level, and diode D5 is not
Conducting, the end KEY export high level.The circuit can be by detecting signal KEY, and counting low level to KEY signal may be implemented not
Same logic control, setting height to LOCK_power according to logic MCU, flat system is powered down enters zero-power.
In one embodiment, microcontroller power supply control circuit further include: voltage acquisition module, input terminal and pwm signal connect
It connects, output end is connect with the voltage detection terminal SPEED of single-chip microcontroller to be controlled.Specifically, as shown in figure 3, voltage acquisition module packet
It includes: the 7th resistance R26 and the 8th resistance R30；The first end of 7th resistance R26 is connect with pwm signal, the 7th resistance R26 second
End is connect with the voltage detection terminal SPEED of single-chip microcontroller to be controlled；The first end of 8th resistance R30 and the second of the 7th resistance R26
End connection, the second end of the 8th resistance R30 are connect with ground wire GND.Certainly, in other embodiments, voltage acquisition module may be used also
Using other voltage collecting devices in the prior art, rationally setting, the present embodiment do not make any limit to this as needed
System.
In alternative embodiment, voltage acquisition module further include: third filter module is connected in parallel in the 7th resistance
Between the second end and ground wire GND of R26.Specifically, as shown in figure 3, third filter module can be the 4th filter capacitor C29,
Filter circuit is simple；Certainly, in other embodiments, third filter module can also other filter circuits, such as RLC in the prior art
Filtering or RC filtering etc., as needed rationally setting.
Above-mentioned microcontroller power supply control circuit can not only realize the zero-power and wake-up when standby mode, additionally it is possible to realize
The control of multitude of different ways, control mode is more flexible and diversified, and the occasion of application is also more extensive.
In one embodiment, as shown in figure 4, the microcontroller power supply control circuit can realize external high level+individual palpation keying
System control, standby mode, first switch Q7 are not turned on, the PWM/VSP mouth of external high level access interface J3, by bonded ON/OFF
Mouthful, KEY state is detected by single-chip microprocessor MCU to be controlled and realizes logic control.External high level is cancelled, and system is powered down into standby
State.
In another embodiment, as shown in figure 5, the microcontroller power supply control circuit can realize external analog signal control,
Standby mode, first switch Q7 are not turned on, and external analog accesses PWM/VSP mouthfuls；When voltage is higher than certain value (such as first switch
When Q7 is Si triode, which can be 0.7V；In another example the definite value can be 0.3V when first switch Q7 is Ge triode)
When, second switch Q9 conducting, system electrification, SPEED mouthfuls of voltages realization logic controls of MCU detection, specifically, SPEED voltage connects
It is connected to the input terminal of the converter of MCU, single-chip microcontroller carries out analog-to-digital conversion to the SPEED input voltage signal received, according to
The different switching of input voltage is different digital signal, realizes different logic controls.
Microcontroller power supply control circuit in the present embodiment can realize logic control, and integrated level improves, and reliability improves, and be
Cost of uniting reduces.And in stand-by mode, entire circuit is in zero-power.
The utility model embodiment additionally provides a kind of single chip circuit, comprising: single-chip microcontroller；With the power input of single-chip microcontroller
The power control circuit of port connection, microcontroller power supply control circuit is using the microcontroller power supply as mentioned in above-described embodiment
Control circuit.The single chip circuit is due to using the microcontroller power supply control circuit in above-described embodiment, microcontroller power supply control
Power consumption of the circuit processed in standby mode is zero-power, reduces the power consumption of single chip circuit.
The utility model embodiment additionally provides a kind of electrical equipment, including the single chip circuit in such as above-described embodiment.
The electrical equipment is due to using the microcontroller power supply control circuit in above-described embodiment, and microcontroller power supply control circuit is standby
Power consumption when state is zero-power, reduces the power consumption of electrical equipment.
In one embodiment, above-mentioned electrical equipment can be the electric appliances such as electric cooker, oven, dust catcher, air-conditioning, television set, this
Embodiment only schematically illustrates, and is not limited thereto.
Although being described in conjunction with the accompanying the embodiments of the present invention, those skilled in the art can not depart from this
Various modifications and variations can be made in the case where the spirit and scope of utility model, and such modifications and variations are each fallen within by appended power
Benefit requires within limited range.
Claims (11)
1. a kind of microcontroller power supply control circuit characterized by comprising
First resistor (R33)；
The first end of first switch (Q7), first switch (Q7) is connect with external power supply, the first end of the first switch (Q7)
The first resistor (R33) is connected between the control terminal of first switch (Q7)；
Second resistance (R36)；
Second switch (Q9) is connected with described between the first end of second switch (Q9) and the control terminal of the first switch (Q7)
The second end of second resistance (R36), second switch (Q9) is connect with ground wire；
The first end of 3rd resistor (R42), 3rd resistor (R42) is connect with the control terminal of second switch (Q9), second end and control
Signal connection processed；
Voltage stabilizing module (U), input terminal are connect with the second end of first switch (Q7), and the power supply of output end and single-chip microcontroller to be controlled is defeated
Enter end connection.
2. microcontroller power supply control circuit according to claim 1, which is characterized in that further include:
First filter module is connected in parallel between the input terminal and ground wire of the Voltage stabilizing module (U)；And/or
Second filter module is connected in parallel between the output end and ground wire of the Voltage stabilizing module (U).
3. microcontroller power supply control circuit according to claim 1, which is characterized in that further include:
Voltage reduction module, one end are connect with the second end of the first switch (Q7), the input of the other end and the Voltage stabilizing module (U)
End connection.
4. microcontroller power supply control circuit according to claim 1, which is characterized in that further include:
Pull down resistor (R47), and be connected between the control terminal and ground wire of the second switch (Q9).
5. microcontroller power supply control circuit according to claim 1, which is characterized in that further include:
Overcurrent protection module is connected in series between the external power supply and the first end of the first switch (Q7).
6. any microcontroller power supply control circuit in -5 according to claim 1, which is characterized in that further include:
Diode (D5), cathode are connect with external push button signalling end；The count signal of anode and the single-chip microcontroller to be controlled detects
End connection.
7. -5 any microcontroller power supply control circuit according to claim 1, which is characterized in that further include:
Voltage acquisition module, input terminal are connect with pwm signal, and output end is connect with the voltage detection terminal of single-chip microcontroller to be controlled.
8. microcontroller power supply control circuit according to claim 7, which is characterized in that the voltage acquisition module includes:
The first end of 7th resistance (R26), the 7th resistance (R26) is connect with pwm signal, the 7th resistance (R26) second end with to
The voltage detection terminal of control single chip computer connects；
The first end of 8th resistance (R30), the 8th resistance (R30) is connect with the second end of the 7th resistance (R26), the 8th resistance
(R30) second end is connect with ground wire.
9. microcontroller power supply control circuit according to claim 7, which is characterized in that the voltage acquisition module also wraps
It includes:
Third filter module is connected in parallel between the second end and ground wire of the 7th resistance (R26).
10. a kind of single chip circuit characterized by comprising
Single-chip microcontroller；
Power control circuit is connect with the power input port of the single-chip microcontroller, and the microcontroller power supply control circuit is using such as
Any microcontroller power supply control circuit of claim 1-9.
11. a kind of electrical equipment, which is characterized in that including single chip circuit as claimed in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240195.3U CN209215904U (en) | 2018-12-28 | 2018-12-28 | Microcontroller power supply control circuit, single chip circuit and electrical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822240195.3U CN209215904U (en) | 2018-12-28 | 2018-12-28 | Microcontroller power supply control circuit, single chip circuit and electrical equipment |
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| CN209215904U true CN209215904U (en) | 2019-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765817A (en) * | 2018-12-28 | 2019-05-17 | 苏州市纽莱克电子科技有限公司 | Microcontroller power supply control circuit, single chip circuit and electrical equipment |
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2018
- 2018-12-28 CN CN201822240195.3U patent/CN209215904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765817A (en) * | 2018-12-28 | 2019-05-17 | 苏州市纽莱克电子科技有限公司 | Microcontroller power supply control circuit, single chip circuit and electrical equipment |
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