CN218675742U - Self-maintaining circuit applied to portable fan - Google Patents
Self-maintaining circuit applied to portable fan Download PDFInfo
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- CN218675742U CN218675742U CN202223096547.5U CN202223096547U CN218675742U CN 218675742 U CN218675742 U CN 218675742U CN 202223096547 U CN202223096547 U CN 202223096547U CN 218675742 U CN218675742 U CN 218675742U
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Abstract
The embodiment of the utility model discloses be applied to self-sustaining circuit of portable fan, including VDD maintenance circuit and awakening circuit, VDD maintenance circuit includes triode Q1, triode Q2, resistance R11, resistance R12, resistance R13; the wake-up circuit comprises a triode Q3, a resistor R16, a first resistor and a second resistor, wherein two ends of the resistor R16 are respectively connected with an emitting electrode and a base electrode of the triode Q3, the emitting electrode of the triode Q3 is connected with the positive electrode of the battery, and the base electrode of the triode Q3 is connected with one end of the light-touch switch; the other end of the tact switch is grounded through the first resistor, and outputs a wake-up signal to the MCU through the second resistor. The utility model cuts off the battery power supply when the portable fan product enters into dormancy/standby, so that the energy loss of the MCU is completely 0, when the light touch switch on the panel is operated by a user, the MCU is reactivated under the wake-up circuit, and the normal working state is recovered; the utility model provides a problem that portable fan stand-by power consumption is big, improved the time of endurance of product.
Description
Technical Field
The utility model relates to a consumer electronics product field especially relates to a be applied to self-sustaining circuit of portable fan.
Background
With the popularization and use of portable devices, users have demands for lower power consumption and longer standby time of products. In response to the requirements of low power consumption and long standby, the traditional electronic product is completed by a self-sleep mode triggered by software. For example, a portable fan is in a self-sleep mode through software, so that standby power consumption is reduced, and the defects that a control panel (MCU) of the portable fan is still in a semi-active state, power consumption cannot meet lower requirements, endurance of the portable fan with a battery is affected, and user experience is poor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides a self-sustaining circuit who is applied to portable fan to promote the continuation of the journey of portable fan.
In order to solve the above technical problem, an embodiment of the present invention provides a self-sustaining circuit applied to a portable fan, the portable fan including an MCU, a battery, and a tact switch, the self-sustaining circuit including a VDD sustaining circuit and a wake-up circuit,
the VDD maintaining circuit comprises a triode Q1, a triode Q2, a resistor R11, a resistor R12 and a resistor R13, wherein an emitting electrode of the triode Q2 is connected with a positive electrode of a battery, a base electrode of the triode Q2 is connected with a collecting electrode of the triode Q1 through the resistor R12, two ends of the resistor R11 are respectively connected with an emitting electrode and a collecting electrode of the triode Q2, a base electrode of the triode Q1 is connected with a control end of the MCU through the resistor R13, and an emitting electrode of the triode Q1 is grounded;
the wake-up circuit comprises a triode Q3, a resistor R16, a first resistor and a second resistor, wherein two ends of the resistor R16 are respectively connected with an emitting electrode and a base electrode of the triode Q3, the emitting electrode of the triode Q3 is connected with the positive electrode of the battery, and the base electrode of the triode Q3 is connected with one end of the light-touch switch; the other end of the tact switch is grounded through the first resistor, and outputs a wake-up signal to the MCU through the second resistor.
Furthermore, the tact switch, the first resistor and the second resistor are all provided with multiple groups.
Further, the transistor Q1 is an NPN-type transistor, and the transistor Q2 is a PNP-type transistor.
Further, the transistor Q3 is a PNP transistor.
The utility model has the advantages that: the utility model cuts off the battery power supply when the portable fan product enters into dormancy/standby, so that the energy loss of the MCU is completely 0, when the light touch switch on the panel is operated by a user, the MCU is reactivated under the wake-up circuit, and the normal working state is recovered; the utility model provides a problem that portable fan stand-by power consumption is big, improved the time of endurance of product.
Drawings
Fig. 1 is a circuit diagram of a self-sustaining circuit applied to a portable fan according to an embodiment of the present invention.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
The portable fan comprises an MCU, a battery, a tact switch and the like.
Referring to fig. 1, a self-sustaining circuit applied to a portable fan according to an embodiment of the present invention includes a VDD sustaining circuit and a wake-up circuit. In fig. 1, the VDD hold circuit is on the left side, and the wake-up circuit is on the right side.
The VDD maintaining circuit comprises a triode Q1, a triode Q2, a resistor R11, a resistor R12 and a resistor R13, wherein an emitting electrode of the triode Q2 is connected with a positive electrode of a battery, a base electrode of the triode Q2 is connected with a collecting electrode of the triode Q1 through the resistor R12, two ends of the resistor R11 are respectively connected with an emitting electrode and a collecting electrode of the triode Q2, a base electrode of the triode Q1 is connected with a control end of the MCU through the resistor R13, and an emitting electrode of the triode Q1 is grounded. The triode Q1 is an NPN type triode, and the triode Q2 is a PNP type triode. The collector of the transistor Q2 is VDD output.
The wake-up circuit comprises a triode Q3, a resistor R16, a first resistor and a second resistor, wherein two ends of the resistor R16 are respectively connected with an emitting electrode and a base electrode of the triode Q3, the emitting electrode of the triode Q3 is connected with the positive electrode of the battery, and the base electrode of the triode Q3 is connected with one end of the light-touch switch; the other end of the tact switch is grounded through the first resistor, and outputs a wake-up signal to the MCU through the second resistor (namely, is connected with the signal input end of the MCU). The triode Q3 is a PNP type triode. The collector of the transistor Q3 is VDD output.
In one embodiment, there are multiple sets of the tact switch, the first resistor, and the second resistor. That is, the user touches any light touch switch on the portable fan to wake up. In fig. 1, there are 2 sets, the 2 sets of first resistors are resistors R3 and R4, respectively, and the 2 sets of second resistors are resistors R14 and R15, respectively.
The utility model discloses a theory of operation does:
the utility model discloses by 5V battery powered, VDD maintains that the circuit mainly comprises 1 8050 and 1 8550 triode, and NPN type triode Q1 is controlled by MCU one end, and when the control end enabled (being MCU's enable foot output high level promptly), VDD =5V, the circuit normally works, and when the control end failed, VDD =0V, and control circuit gets into extremely low power consumption state. The wake-up circuit takes a touch switch as a trigger component, when the touch switch is pressed down, the PNP type triode Q3 is enabled to activate the wake-up MCU, and at the moment, the MCU is powered on for initialization, reads the memory backup, enables the self-locking control end and enters a normal working state.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A self-maintaining circuit applied to a portable fan, the portable fan comprises an MCU, a battery and a tact switch, and is characterized in that the self-maintaining circuit comprises a VDD maintaining circuit and a wake-up circuit,
the VDD maintaining circuit comprises a triode Q1, a triode Q2, a resistor R11, a resistor R12 and a resistor R13, wherein an emitting electrode of the triode Q2 is connected with a positive electrode of a battery, a base electrode of the triode Q2 is connected with a collecting electrode of the triode Q1 through the resistor R12, two ends of the resistor R11 are respectively connected with an emitting electrode and a collecting electrode of the triode Q2, a base electrode of the triode Q1 is connected with a control end of the MCU through the resistor R13, and an emitting electrode of the triode Q1 is grounded;
the wake-up circuit comprises a triode Q3, a resistor R16, a first resistor and a second resistor, wherein two ends of the resistor R16 are respectively connected with an emitting electrode and a base electrode of the triode Q3, the emitting electrode of the triode Q3 is connected with the positive electrode of the battery, and the base electrode of the triode Q3 is connected with one end of the light-touch switch; the other end of the tact switch is grounded through the first resistor, and outputs a wake-up signal to the MCU through the second resistor.
2. The self-sustaining circuit, as claimed in claim 1, wherein the tact switch, the first resistor, and the second resistor have a plurality of sets.
3. The self-sustaining circuit for the portable fan as claimed in claim 1, wherein the transistor Q1 is an NPN-type transistor, and the transistor Q2 is a PNP-type transistor.
4. The self-sustaining circuit for portable fan as claimed in claim 1, wherein the transistor Q3 is a PNP transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223096547.5U CN218675742U (en) | 2022-11-21 | 2022-11-21 | Self-maintaining circuit applied to portable fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223096547.5U CN218675742U (en) | 2022-11-21 | 2022-11-21 | Self-maintaining circuit applied to portable fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218675742U true CN218675742U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223096547.5U Active CN218675742U (en) | 2022-11-21 | 2022-11-21 | Self-maintaining circuit applied to portable fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218675742U (en) |
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2022
- 2022-11-21 CN CN202223096547.5U patent/CN218675742U/en active Active
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