CN203071818U - Double DC boost circuit - Google Patents
Double DC boost circuit Download PDFInfo
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- CN203071818U CN203071818U CN 201320044404 CN201320044404U CN203071818U CN 203071818 U CN203071818 U CN 203071818U CN 201320044404 CN201320044404 CN 201320044404 CN 201320044404 U CN201320044404 U CN 201320044404U CN 203071818 U CN203071818 U CN 203071818U
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Abstract
The utility model discloses a double DC boost circuit for sound equipment of a computer. The double DC boost circuit comprises a USB power supply; the USB power supply is respectively connected with a positive power supply boost drive circuit and a negative power supply reverse conversion drive circuit; the positive power supply boost drive circuit is provided with a positive output terminal + VCC, and the negative power supply reverse conversion drive circuit is provided with a negative output terminal - VCC. The double DC boost circuit provided by the utility model can realize output of positive voltage and negative voltage and improve driving capability of the circuits so as to realize processing of sound effects and a bass tone and is applicable to miniature sound equipment of a computer, e.g., a subwoofer, HIFI (a high fidelity audio) and a karaoke function.
Description
Technical field
The utility model relates to computer stereo equipment, is specifically related to booster circuit.
Background technology
Existing computer stereo is to use 5 volts USB power supply, but because brownout, can't satisfy the micro audio equipment of computer, as subwoofer, HIFI(high-fidelity music center), the needs of Kara OK function etc.
The utility model content
At above-mentioned prior art deficiency, the technical problems to be solved in the utility model provides a kind of booster circuit of stereo set, satisfies the use needs of computer micro audio equipment.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is that two DC booster circuits comprise the USB power supply; The USB power supply is connected with negative supply reverse conversion drive circuit with the positive supply booster driving circuit respectively; The positive supply booster driving circuit is provided with positive output end+VCC, and negative supply reverse conversion drive circuit is provided with negative output terminal-VCC.
Further technical scheme is that described positive supply booster driving circuit comprises a MC34063 chip; The output of USB power supply is connected with an end of resistance R 1, the power pins of a MC34063 chip respectively; The other end of resistance R 1 is connected with an end of resistance R 2, an end of inductance L 1 and the IPK detection pin of a MC34063 chip respectively; The other end of resistance R 2 is connected with the driving tube collector electrode pin of a MC34063; The other end of inductance L 1 is connected with the anode of diode D1, the switching tube collector electrode pin of a MC34063 chip respectively; The negative electrode of diode D1 is connected with an end of resistance R 3; The other end of resistance R 3 is connected with an end of resistance R 4, the comparator reversed input pin of a MC34063 chip respectively; The other end ground connection of resistance R 4; The switching tube emitter pin of the one MC34063 chip and ground pin be ground connection respectively, and the timing capacitor pin is by capacitor C 1 ground connection; The negative electrode of diode D1 is the positive output end+VCC of positive supply booster driving circuit.
Preferably, described positive output end+VCC is respectively by electrochemical capacitor C2 and capacitor C 3 ground connection.
Further technical scheme is that described negative supply reverse conversion drive circuit comprises the 2nd MC34063 chip; The USB power output end is connected with an end of resistance R 5, the power pins of the 2nd MC34063 respectively; The other end of resistance R 5 detects pin with switching tube collector electrode pin, the IPK of the 2nd MC34063 respectively and is connected with driving tube collector electrode pin; The ground pin of the 2nd MC34063 chip is the negative output terminal-VCC of negative supply reverse conversion drive circuit; The timing capacitor pin of the 2nd MC34063 chip is connected with negative output terminal-VCC by capacitor C 4; The switching tube emitter pin of the 2nd MC34063 chip is connected with an end of inductance L 2, the negative electrode of voltage stabilizing didoe Z1 respectively; The other end ground connection of inductance L 2; The anode of voltage stabilizing didoe Z1 is connected with negative output terminal-VCC; The comparator reversed input pin of the 2nd MC34063 chip is connected with an end of resistance R 6, an end of resistance R 7 respectively; The other end ground connection of resistance R 6; The other end of resistance R 7 is connected with negative output terminal-VCC.
Preferably, described negative output terminal-VCC separates capacitor C 5 and capacitor C 6 ground connection by point respectively.
The of the present utility model pair of DC booster circuit can be realized generating positive and negative voltage output, improves the drives ability, realizes the processing of audio, bass tone, is applicable to the micro audio equipment of computer, as subwoofer, HIFI(high-fidelity music center), Kara OK function etc.
Description of drawings
Fig. 1 is the structural representation of the two DC booster circuits of the utility model.
Fig. 2 is the structural representation of the positive supply booster driving circuit of the two DC booster circuits of the utility model.
Fig. 3 is the structural representation of the negative supply reverse conversion drive circuit of the two DC booster circuits of the utility model.
Wherein, 1, switching tube collector electrode pin; 2, switching tube emitter pin; 3, timing capacitor pin; 4, pin; 5, comparator reversed input pin; 6, power pins; 7, IPK detects pin; 8, driving tube collector electrode pin; 1 ', switching tube collector electrode pin; 2 ', switching tube emitter pin; 3 ', timing capacitor pin; 4 ', pin; 5 ', comparator reversed input pin; 6 ', power pins; 7 ', IPK detects pin; 8 ', driving tube collector electrode pin; 100, USB power output end.
Embodiment
As shown in Figure 1, of the present utility model pair of DC booster circuit comprises the USB power supply; The USB power supply is connected with negative supply reverse conversion drive circuit with the positive supply booster driving circuit respectively; The positive supply booster driving circuit is provided with positive output end+VCC, and negative supply reverse conversion drive circuit is provided with negative output terminal-VCC.The USB power supply is converted to the two-way DC power supply, utilize generating positive and negative voltage to drive stereo set, realize the processing of audio, bass tone.
Particularly, as shown in Figure 2, described positive supply booster driving circuit comprises a MC34063 chip; USB power output end 100 is connected with an end of resistance R 1, the power pins 6 of a MC34063 chip respectively; The other end of resistance R 1 is connected with an end of resistance R 2, an end of inductance L 1 and the IPK detection pin 7 of a MC34063 chip respectively; The other end of resistance R 2 is connected with the driving tube collector electrode pin 8 of a MC34063; The other end of inductance L 1 is connected with the anode of diode D1, the switching tube collector electrode pin 1 of a MC34063 chip respectively; The negative electrode of diode D1 is connected with an end of resistance R 3; The other end of resistance R 3 is connected with an end of resistance R 4, the comparator reversed input pin 5 of a MC34063 chip respectively; The other end ground connection of resistance R 4; The switching tube emitter pin 2 of the one MC34063 chip and ground pin 4 be ground connection respectively, and timing capacitor pin 3 is by capacitor C 1 ground connection; The negative electrode of diode D1 is the positive output end+VCC of positive supply booster driving circuit.Described positive output end+VCC is respectively by electrochemical capacitor C2 and capacitor C 3 ground connection.
As shown in Figure 3, described negative supply reverse conversion drive circuit comprises the 2nd MC34063 chip; USB power output end 100 is connected with an end of resistance R 5, the power pins 6 ' of the 2nd MC34063 respectively; The other end of resistance R 5 detects pin 7 ' with switching tube collector electrode pin 1 ', the IPK of the 2nd MC34063 respectively and is connected with driving tube collector electrode pin 8 '; The ground pin 4 ' of the 2nd MC34063 chip is the negative output terminal-VCC of negative supply reverse conversion drive circuit; The timing capacitor pin 3 ' of the 2nd MC34063 chip is connected with negative output terminal-VCC by capacitor C 4; The switching tube emitter pin 2 ' of the 2nd MC34063 chip is connected with an end of inductance L 2, the negative electrode of voltage stabilizing didoe Z1 respectively; The other end ground connection of inductance L 2; The anode of voltage stabilizing didoe Z1 is connected with negative output terminal-VCC; The comparator reversed input pin 5 ' of the 2nd MC34063 chip is connected with an end of resistance R 6, an end of resistance R 7 respectively; The other end ground connection of resistance R 6; The other end of resistance R 7 is connected with negative output terminal-VCC.Described negative output terminal-VCC separates capacitor C 5 and capacitor C 6 ground connection by point respectively.
To one skilled in the art, can make other various corresponding changes and deformation, and these all changes and deformation should belong within the protection range of the utility model claim all according to technical scheme described above and design.
Claims (5)
1. two DC booster circuits comprise the USB power supply; It is characterized in that: the USB power supply is connected with negative supply reverse conversion drive circuit with the positive supply booster driving circuit respectively; The positive supply booster driving circuit is provided with positive output end+VCC, and negative supply reverse conversion drive circuit is provided with negative output terminal-VCC.
2. according to claim 1 pair of DC booster circuit, it is characterized in that: described positive supply booster driving circuit comprises a MC34063 chip; The output of USB power supply is connected with an end of resistance R 1, the power pins of a MC34063 chip respectively; The other end of resistance R 1 is connected with an end of resistance R 2, an end of inductance L 1 and the IPK detection pin of a MC34063 chip respectively; The other end of resistance R 2 is connected with the driving tube collector electrode pin of a MC34063; The other end of inductance L 1 is connected with the anode of diode D1, the switching tube collector electrode pin of a MC34063 chip respectively; The negative electrode of diode D1 is connected with an end of resistance R 3; The other end of resistance R 3 is connected with an end of resistance R 4, the comparator reversed input pin of a MC34063 chip respectively; The other end ground connection of resistance R 4; The switching tube emitter pin of the one MC34063 chip and ground pin be ground connection respectively, and the timing capacitor pin is by capacitor C 1 ground connection; The negative electrode of diode D1 is the positive output end+VCC of positive supply booster driving circuit.
3. according to claim 2 pair of DC booster circuit is characterized in that: described positive output end+VCC is respectively by electrochemical capacitor C2 and capacitor C 3 ground connection.
4. according to claim 1 pair of DC booster circuit, it is characterized in that: described negative supply reverse conversion drive circuit comprises the 2nd MC34063 chip; The USB power output end is connected with an end of resistance R 5, the power pins of the 2nd MC34063 respectively; The other end of resistance R 5 detects pin with switching tube collector electrode pin, the IPK of the 2nd MC34063 respectively and is connected with driving tube collector electrode pin; The ground pin of the 2nd MC34063 chip is the negative output terminal-VCC of negative supply reverse conversion drive circuit; The timing capacitor pin of the 2nd MC34063 chip is connected with negative output terminal-VCC by capacitor C 4; The switching tube emitter pin of the 2nd MC34063 chip is connected with an end of inductance L 2, the negative electrode of voltage stabilizing didoe Z1 respectively; The other end ground connection of inductance L 2; The anode of voltage stabilizing didoe Z1 is connected with negative output terminal-VCC; The comparator reversed input pin of the 2nd MC34063 chip is connected with an end of resistance R 6, an end of resistance R 7 respectively; The other end ground connection of resistance R 6; The other end of resistance R 7 is connected with negative output terminal-VCC.
5. according to claim 4 pair of DC booster circuit is characterized in that: described negative output terminal-VCC separates capacitor C 5 and capacitor C 6 ground connection by point respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044404 CN203071818U (en) | 2013-01-25 | 2013-01-25 | Double DC boost circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044404 CN203071818U (en) | 2013-01-25 | 2013-01-25 | Double DC boost circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071818U true CN203071818U (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320044404 Expired - Fee Related CN203071818U (en) | 2013-01-25 | 2013-01-25 | Double DC boost circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203071818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861507A (en) * | 2018-12-21 | 2019-06-07 | 成都信息工程大学 | A kind of dual power supply conversion method, circuit and power protection method and circuit |
-
2013
- 2013-01-25 CN CN 201320044404 patent/CN203071818U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861507A (en) * | 2018-12-21 | 2019-06-07 | 成都信息工程大学 | A kind of dual power supply conversion method, circuit and power protection method and circuit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20150125 |
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| EXPY | Termination of patent right or utility model |