CN219421001U - Earphone switch circuit, earphone and stereo set - Google Patents
Earphone switch circuit, earphone and stereo set Download PDFInfo
- Publication number
- CN219421001U CN219421001U CN202320329794.0U CN202320329794U CN219421001U CN 219421001 U CN219421001 U CN 219421001U CN 202320329794 U CN202320329794 U CN 202320329794U CN 219421001 U CN219421001 U CN 219421001U
- Authority
- CN
- China
- Prior art keywords
- resistor
- earphone
- electronic
- tube
- switching tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application provides an earphone switch circuit, earphone and stereo set. The earphone on-off switching circuit comprises a battery switch circuit and an earphone central control circuit; the battery switch circuit comprises a first electronic switch tube, a second electronic switch tube, a third electronic switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the control end of the first electronic switch tube is used for receiving a switch key signal; the earphone central control circuit comprises a fourth electronic switch tube and a fifth resistor, the control end of the fourth electronic switch tube is used for being connected with the enabling end of the central controller of the earphone central control system, and the second end of the fifth resistor is also used for being connected with the power supply detection end of the central controller so as to adjust the potential of the enabling end. When the earphone is powered off, the voltage of the power supply detection end of the central controller becomes low, and the output of the enabling end of the central controller is correspondingly controlled to be converted, so that the third electronic switching tube is cut off, the power supply of the battery and the earphone central control system is completely disconnected, and the power consumption in the power off state is effectively reduced.
Description
Technical Field
The present utility model relates to the field of headphones, and in particular, to a switching circuit for switching on and switching off headphones, a headphone, and a sound apparatus.
Background
With the development of consumer electronics industry, various consumer electronics products are layered endlessly, and the application of various sensors to electronic product devices has also increased the technological content of the products. Headphones are now also increasingly moving towards the higher end as a common type of electronic product.
However, most of the conventional headphones use a lithium battery as a power source, and in the off state, the system is always in standby due to the fact that the battery is always connected to the power pin of the chip, for example, patent application No. 202110019104.7. At this time, the battery permanently supplies power to the system or the main control MCU, and the battery power is continuously consumed in a shutdown state, so that the battery is easy to be dead.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide an earphone switching circuit, an earphone and a sound device which can effectively reduce power consumption in a power-off state.
The aim of the utility model is realized by the following technical scheme:
an earphone switch-on/off switching circuit, comprising: a battery switch circuit and an earphone central control circuit; the battery switch circuit comprises a first electronic switch tube, a second electronic switch tube, a third electronic switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the first end of the first resistor is used for being connected with a battery, the first end of the first resistor is also connected with the control end of the first electronic switch tube through the second resistor, the control end of the first electronic switch tube is used for receiving a switch-on/off key signal, the second end of the first resistor is connected with the first end of the first electronic switch tube, and the second end of the first electronic switch tube is grounded; the first end of the first resistor is connected with the first end of the third electronic switching tube, the first end of the first resistor is also connected with the control end of the third electronic switching tube through the third resistor, the control end of the third electronic switching tube is connected with the first end of the fourth resistor, the second end of the third electronic switching tube is used for being connected with the power supply end of the earphone central control system, the second end of the first resistor is connected with the control end of the second electronic switching tube, the first end of the second electronic switching tube is connected with the second end of the fourth resistor, and the second end of the second electronic switching tube is grounded; the earphone central control circuit comprises a fourth electronic switch tube and a fifth resistor, wherein the second end of the fourth resistor is connected with the first end of the fourth electronic switch tube, the control end of the fourth electronic switch tube is used for being connected with the enabling end of a central controller of the earphone central control system, the second end of the fourth electronic switch tube is grounded, the first end of the fifth resistor is used for being connected with the power supply end of the central controller, the second end of the fifth resistor is connected with the control end of the first electronic switch tube, and the second end of the fifth resistor is also used for being connected with the power supply detection end of the central controller so as to adjust the potential of the enabling end.
In one embodiment, the earphone central control circuit further includes a fifth electronic switching tube, the second end of the fourth resistor is connected to the first end of the fifth electronic switching tube, the control end of the fifth electronic switching tube is used for receiving a battery charging signal, and the second end of the fifth electronic switching tube is grounded.
In one embodiment, the earphone central control circuit further comprises a sixth resistor, a first end of the sixth resistor is connected with the battery, and a second end of the sixth resistor is connected with the control end of the fifth electronic switch tube.
In one embodiment, the earphone central control circuit further comprises a central control diode, the second end of the fifth resistor is connected with the positive electrode of the central control diode, and the negative electrode of the central control diode is connected with the control end of the first electronic switching tube.
In one embodiment, the battery switch circuit further includes a power button, a first end of the power button is connected to the control end of the first electronic switch tube, and a second end of the power button is grounded.
In one embodiment, the first resistor is a variable resistor.
In one embodiment, the second resistor is a variable resistor.
In one embodiment, at least one of the third resistor and the fourth resistor is a variable resistor.
An earphone comprising the earphone on-off switching circuit according to any one of the above embodiments.
An audio device comprising the earphone switch circuit according to any one of the above embodiments.
Compared with the prior art, the utility model has at least the following advantages:
when the earphone is started, the first electronic switching tube is turned from on to off, the second electronic switching tube is turned from off to on, so that the voltage of the first end of the fourth resistor is increased, the third electronic switching tube is turned on, and at the moment, the enabling end of the central controller outputs, so that the fourth electronic switching tube is turned on, the third electronic switching tube is kept on, and the battery is convenient to continuously supply power to the earphone central control system; when the power supply is turned off, the voltage of the power supply detection end of the central controller becomes low, the output of the enabling end of the central controller is correspondingly controlled to be converted, so that the fourth electronic switching tube is turned off, the third electronic switching tube is turned off, the power supply of the battery and the earphone central control system is completely disconnected, and the power consumption in the off state is effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a circuit diagram of a switching circuit for switching on and off a tympanic machine according to an embodiment.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model relates to an earphone switching circuit. In one embodiment, the earphone on-off switching circuit comprises a battery switch circuit and an earphone central control circuit; the battery switch circuit comprises a first electronic switch tube, a second electronic switch tube, a third electronic switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the first end of the first resistor is used for being connected with a battery, the first end of the first resistor is also connected with the control end of the first electronic switch tube through the second resistor, the control end of the first electronic switch tube is used for receiving a switch-on/off key signal, the second end of the first resistor is connected with the first end of the first electronic switch tube, and the second end of the first electronic switch tube is grounded; the first end of the first resistor is connected with the first end of the third electronic switching tube, the first end of the first resistor is also connected with the control end of the third electronic switching tube through the third resistor, the control end of the third electronic switching tube is connected with the first end of the fourth resistor, the second end of the third electronic switching tube is used for being connected with the power supply end of the earphone central control system, the second end of the first resistor is connected with the control end of the second electronic switching tube, the first end of the second electronic switching tube is connected with the second end of the fourth resistor, and the second end of the second electronic switching tube is grounded; the earphone central control circuit comprises a fourth electronic switch tube and a fifth resistor, wherein the second end of the fourth resistor is connected with the first end of the fourth electronic switch tube, the control end of the fourth electronic switch tube is used for being connected with the enabling end of a central controller of the earphone central control system, the second end of the fourth electronic switch tube is grounded, the first end of the fifth resistor is used for being connected with the power supply end of the central controller, the second end of the fifth resistor is connected with the control end of the first electronic switch tube, and the second end of the fifth resistor is also used for being connected with the power supply detection end of the central controller so as to adjust the potential of the enabling end. When the earphone is started, the first electronic switching tube is turned from on to off, the second electronic switching tube is turned from off to on, so that the voltage of the first end of the fourth resistor is increased, the third electronic switching tube is turned on, and at the moment, the enabling end of the central controller outputs, so that the fourth electronic switching tube is turned on, the third electronic switching tube is kept on, and the battery is convenient to continuously supply power to the earphone central control system; when the power supply is turned off, the voltage of the power supply detection end of the central controller becomes low, the output of the enabling end of the central controller is correspondingly controlled to be converted, so that the fourth electronic switching tube is turned off, the third electronic switching tube is turned off, the power supply of the battery and the earphone central control system is completely disconnected, and the power consumption in the off state is effectively reduced.
Fig. 1 is a circuit diagram of an earphone switch circuit according to an embodiment of the utility model.
The earphone switch circuit 10 of an embodiment includes a battery switch circuit and an earphone central control circuit. The battery switch circuit comprises a first electronic switch tube Q4, a second electronic switch tube Q1, a third electronic switch tube Q3, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4. The first end of the first resistor R1 is used for being connected with a battery, the first end of the first resistor R1 is also connected with the control end of the first electronic switch tube Q4 through the second resistor R2, the control end of the first electronic switch tube Q4 is used for receiving a switch-on/off key signal, the second end of the first resistor R1 is connected with the first end of the first electronic switch tube Q4, and the second end of the first electronic switch tube Q4 is grounded. The first end of the first resistor R1 is connected with the first end of the third electronic switch tube Q3, the first end of the first resistor R1 is also connected with the control end of the third electronic switch tube Q3 through the third resistor R3, the control end of the third electronic switch tube Q3 is connected with the first end of the fourth resistor R4, the second end of the third electronic switch tube Q3 is used for being connected with the power supply end of the earphone central control system, and the second end of the first resistor R1 is connected with the control end of the second electronic switch tube Q1. The first end of the second electronic switching tube Q1 is connected to the second end of the fourth resistor R4, and the second end of the second electronic switching tube Q1 is grounded. The earphone central control circuit comprises a fourth electronic switch tube Q2 and a fifth resistor R5. The second end of the fourth resistor R4 is connected to the first end of the fourth electronic switching tube Q2, the control end of the fourth electronic switching tube Q2 is connected to the enabling end mcu_en of the central controller of the earphone central control system, and the second end of the fourth electronic switching tube Q2 is grounded. The first end of the fifth resistor R5 is connected to the POWER supply end mcu_vdd of the central controller, the second end of the fifth resistor R5 is connected to the control end of the first electronic switching tube Q4, and the second end of the fifth resistor R5 is further connected to the POWER supply detection end mcu_power_det of the central controller to adjust the potential of the enable end mcu_en.
In this embodiment, when the electronic device is turned on, the first electronic switching tube Q4 is turned from on to off, the second electronic switching tube Q1 is turned from off to on, so that the voltage at the first end of the fourth resistor R4 rises, and the third electronic switching tube Q3 is turned on, and at this time, the enabling end mcu_en of the central controller outputs, so that the fourth electronic switching tube Q2 is turned on, and the third electronic switching tube Q3 is kept on, so that the battery can continuously supply power to the earphone central control system; when the POWER supply is turned off, the voltage of the POWER supply detection end MCU_POWER_DET of the central controller is lowered, the output of the enabling end MCU_EN of the central controller is correspondingly controlled to be converted, so that the fourth electronic switching tube Q2 is turned off, the third electronic switching tube Q3 is turned off, the POWER supply of the battery and the earphone central control system is completely disconnected, and the POWER consumption in the off state is effectively reduced.
In one embodiment, referring to fig. 1, the earphone central control circuit further includes a fifth electronic switch Q5, a second end of the fourth resistor R4 is connected to a first end of the fifth electronic switch Q5, a control end of the fifth electronic switch Q5 is configured to receive a battery charging signal, and a second end of the fifth electronic switch Q5 is grounded. In this embodiment, the fifth electronic switching tube Q5 is connected to the fourth resistor R4, specifically, the fourth resistor R4 is connected in series between the control end of the third electronic switching tube Q3 and the first end of the fifth electronic switching tube Q5, and the voltage of the first end of the fifth electronic switching tube Q5 is controlled by the battery charging signal. When charging is required, for example, a USB is externally connected, the battery charging signal is input to the control end of the fifth electronic switching tube Q5, so that the fifth electronic switching tube Q5 is turned on, and the third electronic switching tube Q3 is turned on to start the earphone central control system, so as to be convenient for entering a charging state. After the earphone is full, for example, the USB is unplugged, the fifth electronic switching tube Q5 is turned from on to off, so that the third electronic switching tube Q3 is also turned off, and the battery is disconnected from the power supply of the earphone central control system and enters the shutdown state again, and the shutdown power consumption after the charging is completed can be reduced.
Further, the earphone central control circuit further comprises a sixth resistor R6, a first end of the sixth resistor R6 is connected with the battery, and a second end of the sixth resistor R6 is connected with the control end of the fifth electronic switching tube Q5. In this embodiment, the sixth resistor R6 is connected to the fifth electronic switching tube Q5, specifically, the sixth resistor R6 is connected in series to the control end of the fifth electronic switching tube Q5, where the sixth resistor R6 is used as a pull-up resistor of the control end of the fifth electronic switching tube Q5, and the sixth resistor R6 appropriately increases the voltage of the control end of the fifth electronic switching tube Q5, so that the fifth electronic switching tube Q5 accurately detects the voltage of the battery charging signal, so as to improve the control of the on and off states of the fifth electronic switching tube Q5, and thus facilitate the accurate control of the charging state.
In one embodiment, referring to fig. 1, the earphone central control circuit further includes a central control diode D1, the second end of the fifth resistor R5 is connected to the positive electrode of the central control diode D1, and the negative electrode of the central control diode D1 is connected to the control end of the first electronic switching tube Q4. In this embodiment, the central control diode D1 is connected to the first electronic switching tube Q4, specifically, the central control diode D1 is connected in series between the fifth resistor R5 and the control end of the first electronic switching tube Q4, and the central control diode D1 derives the power supply voltage after the central control device is turned on in a unidirectional manner, so as to improve the detection accuracy of the turned-on state of the central control device. In addition, the central control diode D1 can also avoid the direct starting of the central control device by the electric energy output by the battery, thereby further reducing the power consumption in the shutdown state.
In one embodiment, referring to fig. 1, the battery switch circuit further includes a POWER KEY power_key, a first end of the POWER KEY power_key is connected to the control end of the first electronic switch Q4, and a second end of the POWER KEY power_key is grounded. In this embodiment, the POWER button power_key is used to generate a POWER on/off button signal, and when the POWER is turned on, the POWER button power_key is tapped to pull the voltage of the control end of the first electronic switching tube Q4 low, so that the third electronic switching tube Q3 is turned on, thereby facilitating the battery to output electric energy; when the earphone is turned off, the POWER KEY power_key is touched again, the voltage of the control end of the first electronic switching tube Q4 is pulled up by the POWER supply voltage of the central controller, so that the third electronic switching tube Q3 is turned off, the battery output electric energy is conveniently turned off, and the POWER supply to the earphone central control system is stopped.
In one embodiment, the first resistor R1 is a variable resistor, or the second resistor R2 is a variable resistor, or at least one of the third resistor R3 and the fourth resistor R4 is a variable resistor, or the fifth resistor R5 is a variable resistor. In this embodiment, the resistance of the first resistor R1 is adjustable, the first end current of the first electronic switching tube Q4 is adjusted, the resistance of the second resistor R2 is adjustable, and the control end current of the first electronic switching tube Q4 is adjusted to ensure the normal operation of the first electronic switching tube Q4. At least one of the third resistor R3 and the fourth resistor R4 is a variable resistor, so as to facilitate adjustment of the voltage of the control terminal of the third electronic switching tube Q3, so as to be applicable to different types of third electronic switching tubes Q3. The resistance value of the fifth resistor R5 is adjustable, and the current of the control end of the first electronic switching tube Q4 is adjusted, so as to ensure accurate switching of the first electronic switching tube Q4 to the on-off state. The first electronic switching tube Q4 is an NPN triode, the first end of the first electronic switching tube Q4 is a collector of the NPN triode, the second end of the first electronic switching tube Q4 is an emitter of the NPN triode, the control end of the first electronic switching tube Q4 is a base of the NPN triode, and the second electronic switching tube Q1, the fourth electronic switching tube Q2 and the fifth electronic switching tube Q5 are NPN triodes. The third electronic switching tube Q3 is an N-type MOS tube, the first end of the third electronic switching tube Q3 is a drain electrode of the N-type MOS tube, the second end of the third electronic switching tube Q3 is a source electrode of the N-type MOS tube, and the control end of the third electronic switching tube Q3 is a grid electrode of the N-type MOS tube.
In one embodiment, the application further provides an earphone, which comprises the earphone on-off switching circuit described in any one of the embodiments. In this embodiment, the earphone on-off switching circuit includes a battery switching circuit and an earphone central control circuit; the battery switch circuit comprises a first electronic switch tube, a second electronic switch tube, a third electronic switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the first end of the first resistor is used for being connected with a battery, the first end of the first resistor is also connected with the control end of the first electronic switch tube through the second resistor, the control end of the first electronic switch tube is used for receiving a switch-on/off key signal, the second end of the first resistor is connected with the first end of the first electronic switch tube, and the second end of the first electronic switch tube is grounded; the first end of the first resistor is connected with the first end of the third electronic switching tube, the first end of the first resistor is also connected with the control end of the third electronic switching tube through the third resistor, the control end of the third electronic switching tube is connected with the first end of the fourth resistor, the second end of the third electronic switching tube is used for being connected with the power supply end of the earphone central control system, the second end of the first resistor is connected with the control end of the second electronic switching tube, the first end of the second electronic switching tube is connected with the second end of the fourth resistor, and the second end of the second electronic switching tube is grounded; the earphone central control circuit comprises a fourth electronic switch tube and a fifth resistor, wherein the second end of the fourth resistor is connected with the first end of the fourth electronic switch tube, the control end of the fourth electronic switch tube is used for being connected with the enabling end of a central controller of the earphone central control system, the second end of the fourth electronic switch tube is grounded, the first end of the fifth resistor is used for being connected with the power supply end of the central controller, the second end of the fifth resistor is connected with the control end of the first electronic switch tube, and the second end of the fifth resistor is also used for being connected with the power supply detection end of the central controller so as to adjust the potential of the enabling end. When the earphone is started, the first electronic switching tube is turned from on to off, the second electronic switching tube is turned from off to on, so that the voltage of the first end of the fourth resistor is increased, the third electronic switching tube is turned on, and at the moment, the enabling end of the central controller outputs, so that the fourth electronic switching tube is turned on, the third electronic switching tube is kept on, and the battery is convenient to continuously supply power to the earphone central control system; when the power supply is turned off, the voltage of the power supply detection end of the central controller becomes low, the output of the enabling end of the central controller is correspondingly controlled to be converted, so that the fourth electronic switching tube is turned off, the third electronic switching tube is turned off, the power supply of the battery and the earphone central control system is completely disconnected, and the power consumption in the off state is effectively reduced.
In one embodiment, the application further provides an audio device, which includes the earphone switch circuit according to any one of the embodiments. In this embodiment, the earphone on-off switching circuit includes a battery switching circuit and an earphone central control circuit; the battery switch circuit comprises a first electronic switch tube, a second electronic switch tube, a third electronic switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the first end of the first resistor is used for being connected with a battery, the first end of the first resistor is also connected with the control end of the first electronic switch tube through the second resistor, the control end of the first electronic switch tube is used for receiving a switch-on/off key signal, the second end of the first resistor is connected with the first end of the first electronic switch tube, and the second end of the first electronic switch tube is grounded; the first end of the first resistor is connected with the first end of the third electronic switching tube, the first end of the first resistor is also connected with the control end of the third electronic switching tube through the third resistor, the control end of the third electronic switching tube is connected with the first end of the fourth resistor, the second end of the third electronic switching tube is used for being connected with the power supply end of the earphone central control system, the second end of the first resistor is connected with the control end of the second electronic switching tube, the first end of the second electronic switching tube is connected with the second end of the fourth resistor, and the second end of the second electronic switching tube is grounded; the earphone central control circuit comprises a fourth electronic switch tube and a fifth resistor, wherein the second end of the fourth resistor is connected with the first end of the fourth electronic switch tube, the control end of the fourth electronic switch tube is used for being connected with the enabling end of a central controller of the earphone central control system, the second end of the fourth electronic switch tube is grounded, the first end of the fifth resistor is used for being connected with the power supply end of the central controller, the second end of the fifth resistor is connected with the control end of the first electronic switch tube, and the second end of the fifth resistor is also used for being connected with the power supply detection end of the central controller so as to adjust the potential of the enabling end. When the earphone is started, the first electronic switching tube is turned from on to off, the second electronic switching tube is turned from off to on, so that the voltage of the first end of the fourth resistor is increased, the third electronic switching tube is turned on, and at the moment, the enabling end of the central controller outputs, so that the fourth electronic switching tube is turned on, the third electronic switching tube is kept on, and the battery is convenient to continuously supply power to the earphone central control system; when the power supply is turned off, the voltage of the power supply detection end of the central controller becomes low, the output of the enabling end of the central controller is correspondingly controlled to be converted, so that the fourth electronic switching tube is turned off, the third electronic switching tube is turned off, the power supply of the battery and the earphone central control system is completely disconnected, and the power consumption in the off state is effectively reduced.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. An earphone switching circuit is characterized by comprising:
the battery switch circuit comprises a first electronic switch tube, a second electronic switch tube, a third electronic switch tube, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the first end of the first resistor is used for being connected with a battery, the first end of the first resistor is also connected with the control end of the first electronic switch tube through the second resistor, the control end of the first electronic switch tube is used for receiving a switch on/off key signal, the second end of the first resistor is connected with the first end of the first electronic switch tube, and the second end of the first electronic switch tube is grounded; the first end of the first resistor is connected with the first end of the third electronic switching tube, the first end of the first resistor is also connected with the control end of the third electronic switching tube through the third resistor, the control end of the third electronic switching tube is connected with the first end of the fourth resistor, the second end of the third electronic switching tube is used for being connected with the power supply end of the earphone central control system, the second end of the first resistor is connected with the control end of the second electronic switching tube, the first end of the second electronic switching tube is connected with the second end of the fourth resistor, and the second end of the second electronic switching tube is grounded;
the earphone central control circuit comprises a fourth electronic switch tube and a fifth resistor, wherein the second end of the fourth resistor is connected with the first end of the fourth electronic switch tube, the control end of the fourth electronic switch tube is used for being connected with the enabling end of a central controller of the earphone central control system, the second end of the fourth electronic switch tube is grounded, the first end of the fifth resistor is used for being connected with the power supply end of the central controller, the second end of the fifth resistor is connected with the control end of the first electronic switch tube, and the second end of the fifth resistor is also used for being connected with the power supply detection end of the central controller so as to adjust the potential of the enabling end.
2. The earphone switch-on/off switching circuit according to claim 1, wherein the earphone central control circuit further comprises a fifth electronic switching tube, the second end of the fourth resistor is connected to the first end of the fifth electronic switching tube, the control end of the fifth electronic switching tube is used for receiving a battery charging signal, and the second end of the fifth electronic switching tube is grounded.
3. The earphone on-off switching circuit according to claim 2, wherein the earphone central control circuit further comprises a sixth resistor, a first end of the sixth resistor is connected with the battery, and a second end of the sixth resistor is connected with the control end of the fifth electronic switching tube.
4. The earphone switch-on/off switching circuit according to claim 1, wherein the earphone central control circuit further comprises a central control diode, the second end of the fifth resistor is connected with the positive electrode of the central control diode, and the negative electrode of the central control diode is connected with the control end of the first electronic switch tube.
5. The earphone switch-on/off switching circuit according to claim 1, wherein the battery switch circuit further comprises a power button, a first end of the power button is connected to the control end of the first electronic switch tube, and a second end of the power button is grounded.
6. The earphone switch-on/off switching circuit of claim 1, wherein the first resistor is a variable resistor.
7. The earphone switch-on/off switching circuit according to claim 1, wherein the second resistor is a variable resistor.
8. The earphone switch-on/off switching circuit according to claim 1, wherein at least one of the third resistor and the fourth resistor is a variable resistor.
9. An earphone, characterized by comprising the earphone on-off switching circuit according to any one of claims 1 to 8.
10. An audio device comprising the earphone on-off switching circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320329794.0U CN219421001U (en) | 2023-02-21 | 2023-02-21 | Earphone switch circuit, earphone and stereo set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320329794.0U CN219421001U (en) | 2023-02-21 | 2023-02-21 | Earphone switch circuit, earphone and stereo set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219421001U true CN219421001U (en) | 2023-07-25 |
Family
ID=87244452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320329794.0U Active CN219421001U (en) | 2023-02-21 | 2023-02-21 | Earphone switch circuit, earphone and stereo set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219421001U (en) |
-
2023
- 2023-02-21 CN CN202320329794.0U patent/CN219421001U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203537358U (en) | One-key switching circuit | |
| JP2020092397A (en) | Wireless headset and assembly of wireless headset and charging box | |
| CN102332898B (en) | Switching circuit with zero standby power consumption | |
| CN212484119U (en) | Power switch control circuit and device | |
| TW201411327A (en) | Electronic device with power consumption detection function | |
| CN103338029A (en) | Automatic reset device | |
| CN202353536U (en) | Time adjustable switching circuit | |
| CN219421001U (en) | Earphone switch circuit, earphone and stereo set | |
| CN210579146U (en) | Low-power consumption circuit and TWS bluetooth headset | |
| CN210780130U (en) | Power-off control circuit | |
| CN201995065U (en) | Wake-up circuit and digital television receiving terminal | |
| CN110098661B (en) | Power supply switching circuit and household appliance | |
| CN206413166U (en) | A kind of earphone output mute circuit | |
| CN213027985U (en) | One-key switching circuit | |
| CN210157162U (en) | Key combined circuit for realizing hardware reset | |
| CN216852310U (en) | Earphone shutdown circuit and headphone | |
| CN110943720B (en) | Automatic shutdown circuit of equipment and equipment | |
| CN113054967A (en) | Control circuit and method for startup and shutdown | |
| CN107707230B (en) | Intelligent control joint control power switch | |
| CN214337781U (en) | Control circuit | |
| CN206490464U (en) | Portable power source charging device | |
| CN110750060A (en) | Automatic monitoring and managing system for environmental quality | |
| CN201590886U (en) | Startup and shutdown muting circuit | |
| CN218995923U (en) | One-key multifunctional control circuit | |
| CN220022612U (en) | Switching circuit of low-power consumption standby power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |