CN219351700U - Software and hardware switching circuit - Google Patents
Software and hardware switching circuit Download PDFInfo
- Publication number
- CN219351700U CN219351700U CN202223140958.XU CN202223140958U CN219351700U CN 219351700 U CN219351700 U CN 219351700U CN 202223140958 U CN202223140958 U CN 202223140958U CN 219351700 U CN219351700 U CN 219351700U
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- triode
- bluetooth audio
- audio chip
- field effect
- effect transistor
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- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model provides a software and hardware switching circuit, includes bluetooth audio chip, switch SW4, triode Q1 and field effect transistor U3, bluetooth audio chip's detection pin ON/OFF passes through switch SW4 ground connection, bluetooth audio chip's high level pin POW ON is connected with triode Q1's base, triode Q1's projecting pole ground connection, triode Q1's collecting electrode is connected with field effect transistor U3's source electrode, field effect transistor U3's drain electrode is connected with bluetooth audio chip's pin LOW BAT_DET. When the switch SW4 is pressed in the starting state, the ON/OFF of the Bluetooth audio chip detection pin detects that the voltage is pulled down, the POW ON of the Bluetooth audio chip high-level pin does not have voltage output, the triode Q1 enters the cut-OFF state, which is equivalent to infinite resistance value between the collector and the emitter pins of the triode Q1, no current passes between the collector and the emitter pins, and no current passes between the power supply and the ground, thus the power consumption problem is greatly reduced.
Description
Technical Field
The utility model relates to a switch circuit, in particular to a software and hardware switch circuit.
Background
The existing audio equipment is usually powered on/off by adopting a chip or hardware, and the power consumption problem exists when the chip is powered on/off singly, and the hardware is powered on/off singly, so that a reasonable switching circuit is required.
Disclosure of Invention
The utility model aims to provide a software and hardware switching circuit with smaller power consumption.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a software and hardware switching circuit, includes bluetooth audio chip, switch SW4, triode Q1 and field effect transistor U3, bluetooth audio chip's detection pin ON/OFF passes through switch SW4 ground connection, bluetooth audio chip's pin POW ON output high level is connected with triode Q1's base, triode Q1 switches ON and is equivalent to collector ground, triode Q1's collector is connected with field effect transistor U3's source electrode, field effect transistor U3's drain electrode is connected with bluetooth audio chip's pin LOW BAT_DET. The principle of the utility model is as follows: the switch SW4 is pressed down, the Bluetooth audio chip detection pin ON/OFF detects that the voltage is pulled down, the Bluetooth audio chip high level pin POW ON is continuously high level, so that the field effect transistor U3 is conducted, the drain electrode pin outputs the voltage VDD to supply power to the Bluetooth audio chip, namely, the Bluetooth audio chip is started; and in the starting state, the switch SW4 is pressed down again, the Bluetooth audio chip detection pin is ON/OFF, the voltage is detected to be pulled down again, the Bluetooth audio chip high-level pin POW ON has no voltage output, the field effect tube U3 is cut OFF, and the drain electrode pin has no voltage output, namely, the power-OFF is performed. When the switch SW4 is pressed in the starting state, the ON/OFF of the Bluetooth audio chip detection pin detects that the voltage is pulled down, the POW ON of the Bluetooth audio chip high-level pin does not have voltage output, the triode Q1 enters the cut-OFF state, which is equivalent to infinite resistance value between the collector and the emitter pins of the triode Q1, no current passes between the collector and the emitter pins, and no current passes between the power supply and the ground, thus the power consumption problem is greatly reduced.
As an improvement, the detection pin ON/OFF of the bluetooth audio chip is connected with the switch SW4 through the forward diode D4, the gate of the field effect transistor U3 is connected with the switch SW4 through the forward diode D3, the collector of the triode Q1 is connected with the gate of the field effect transistor U3 through the resistor R19, the collector of the triode Q1 is connected with the source of the field effect transistor U3 through the resistor R19 and the resistor R14, the collector of the triode Q1 is connected with the positive electrode of the battery through the resistor R19 and the capacitor C34, the high level pin POW ON of the bluetooth audio chip is grounded through the resistor R21 and the capacitor C40, a resistor R23 is arranged between the base and the emitter of the triode Q1, a resistor R13 is arranged between the drain of the field effect transistor U3 and the pin LOW bat_det of the bluetooth audio chip, a connecting line between the drain of the field effect transistor U3 and the resistor R13 is respectively connected with a grounding capacitor C30, a capacitor C31 and a capacitor C32, and a connecting line between the resistor R13 and the pin LOW bat_det of the bluetooth audio chip is connected with the ground through the resistor R15 and the resistor C33 in series.
As an improvement, the Bluetooth audio chip model is ATS2833.
Compared with the prior art, the utility model has the beneficial effects that:
when the switch SW4 is pressed in the starting state, the ON/OFF of the Bluetooth audio chip detection pin detects that the voltage is pulled down, the POW ON of the Bluetooth audio chip high-level pin does not have voltage output, the triode Q1 enters the cut-OFF state, which is equivalent to infinite resistance value between the collector and the emitter pins of the triode Q1, no current passes between the collector and the emitter pins, and no current passes between the power supply and the ground, thus the power consumption problem is greatly reduced.
Drawings
Fig. 1 is a schematic circuit diagram of the present utility model.
Fig. 2 is a circuit diagram of the utility model applied to sound equipment.
Detailed Description
The utility model is further described below with reference to the drawings.
As shown in fig. 1 and 2, the software and hardware switching circuit comprises a bluetooth audio chip ATS2833, a switch SW4, a triode Q1 and a field effect transistor U3, a detection pin ON/OFF of the bluetooth audio chip is grounded through the switch SW4, a high-level pin POW ON of the bluetooth audio chip is connected with a base electrode of the triode Q1, an emitter electrode of the triode Q1 is grounded, a collector electrode of the triode Q1 is connected with a source electrode of the field effect transistor U3, and a drain electrode of the field effect transistor U3 is connected with a pin LOW bat_det of the bluetooth audio chip. The detection pin ON/OFF of bluetooth audio chip is connected with switch SW4 through forward diode D4, the grid of field effect transistor U3 is connected with switch SW4 through forward diode D3, triode Q1's collecting electrode passes through resistance R19 and is connected with field effect transistor U3's grid, triode Q1's collecting electrode passes through resistance R19, resistance R14 and is connected with field effect transistor U3's source, triode Q1's collecting electrode passes through resistance R19, electric capacity C34 and is connected with the battery positive pole, bluetooth audio chip's pin POW ON passes through resistance R21, electric capacity C40 ground connection, be equipped with resistance R23 between triode Q1's the base and the projecting pole, be equipped with resistance R13 between field effect transistor U3's drain electrode and bluetooth audio chip's pin LOW BAT_DET, the line between field effect transistor U3's drain electrode and resistance R13 connects ground connection electric capacity C30, electric capacity C31, electric capacity C32 respectively, the resistance R13 passes through resistance R15 ground connection and ground connection through resistance R33 and ground connection.
The principle of the utility model is as follows: the switch SW4 is pressed down, the Bluetooth audio chip detection pin ON/OFF detects that the voltage is pulled down, the Bluetooth audio chip high level pin POW ON is continuously high level, so that the field effect transistor U3 is conducted, the drain electrode pin outputs the voltage VDD to supply power to the Bluetooth audio chip, namely, the Bluetooth audio chip is started; and in the starting state, the switch SW4 is pressed down again, the Bluetooth audio chip detection pin is ON/OFF, the voltage is detected to be pulled down again, the Bluetooth audio chip high-level pin POW ON has no voltage output, the field effect tube U3 is cut OFF, and the drain electrode pin has no voltage output, namely, the power-OFF is performed. When the switch SW4 is pressed in the starting state, the ON/OFF of the Bluetooth audio chip detection pin detects that the voltage is pulled down, the POW ON of the Bluetooth audio chip high-level pin does not have voltage output, the triode Q1 enters the cut-OFF state, which is equivalent to infinite resistance value between the collector and the emitter pins of the triode Q1, no current passes between the collector and the emitter pins, and no current passes between the power supply and the ground, thus the power consumption problem is greatly reduced.
Claims (3)
1. A software and hardware switching circuit is characterized in that: including bluetooth audio chip, switch SW4, triode Q1 and field effect transistor U3, bluetooth audio chip's detection pin ON/OFF passes through switch SW4 ground connection, bluetooth audio chip's high level pin POW ON is connected with triode Q1's base, triode Q1's projecting pole ground connection, triode Q1's collecting electrode is connected with field effect transistor U3's source electrode, field effect transistor U3's drain electrode is connected with bluetooth audio chip's pin LOW BAT_DET.
2. A software and hardware switching circuit according to claim 1 wherein: the detection pin ON/OFF of bluetooth audio chip passes through forward diode D4 and is connected with switch SW4, the grid of field effect transistor U3 passes through forward diode D3 and is connected with switch SW4, triode Q1's collecting electrode passes through resistance R19 and is connected with field effect transistor U3's grid, triode Q1's collecting electrode passes through resistance R19, resistance R14 and is connected with field effect transistor U3's source, triode Q1's collecting electrode passes through resistance R19, electric capacity C34 and is connected with the battery positive pole, bluetooth audio chip's high level pin POW ON passes through resistance R21, electric capacity C40 ground, be equipped with resistance R23 between triode Q1's base and the projecting pole, be equipped with resistance R13 between field effect transistor U3's drain electrode and bluetooth audio chip's the pin LOW BAT_DET, the line between field effect transistor U3's drain electrode and resistance R13 is connected ground capacitor C30, electric capacity C31, electric capacity C32 respectively, be connected through resistance R13 and bluetooth audio chip's pin LOW_DET through resistance R33 and ground connection through resistance R15.
3. A software and hardware switching circuit according to claim 1 wherein: the Bluetooth audio chip model is ATS2833.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223140958.XU CN219351700U (en) | 2022-11-25 | 2022-11-25 | Software and hardware switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223140958.XU CN219351700U (en) | 2022-11-25 | 2022-11-25 | Software and hardware switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351700U true CN219351700U (en) | 2023-07-14 |
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ID=87106776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223140958.XU Active CN219351700U (en) | 2022-11-25 | 2022-11-25 | Software and hardware switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351700U (en) |
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2022
- 2022-11-25 CN CN202223140958.XU patent/CN219351700U/en active Active
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