CN201230275Y - USB electric power supply apparatus with audio power amplifier - Google Patents
USB electric power supply apparatus with audio power amplifier Download PDFInfo
- Publication number
- CN201230275Y CN201230275Y CNU2008200955046U CN200820095504U CN201230275Y CN 201230275 Y CN201230275 Y CN 201230275Y CN U2008200955046 U CNU2008200955046 U CN U2008200955046U CN 200820095504 U CN200820095504 U CN 200820095504U CN 201230275 Y CN201230275 Y CN 201230275Y
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- Prior art keywords
- power supply
- power
- usb
- battery
- power amplifier
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- 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.)
- Expired - Fee Related
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- 230000001681 protective effect Effects 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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Abstract
The utility model discloses a power supply device for an USB power supply of an audio power amplifier, which comprises a USB power supply, an amperite, a voltage booster circuit, a battery and a temperature rising and full-charging protection circuit. The USB power supply, the amperite, the voltage booster circuit and the battery are sequentially connected in series; and the temperature rising and full-charging protection circuit is respectively connected with the voltage booster and the battery. In the utility model, the USB power supply passes through the amperite and the voltage booster circuit and then the power supply device charges up the battery, and when the music power of the power amplifier is small, the unused power of the power supply is stored for use when the music power is large, so the largest music output power can reach 20 W and is much larger than the 2.5 W power of the USB power supply.
Description
Technical field
The utility model relates to a kind of electric supply installation of audio frequency power amplifier, particularly a kind of USB power supply device of audio frequency power amplifier.
Background technology
Known USB power supply is+5V-500mA that its power output is less than 2.5W.Use the power amplifier of USB power supply power supply, its instantaneous power is easy to exceed the USB power supply limit, causes the USB power supply port protection phenomenon to occur.Obtaining bigger power can only external power supply, but lost like this USB power supply succinctly, advantage easily.
Summary of the invention
The above-mentioned technical problem that exists when having the USB power supply as amplifier power supply now in order to solve, the utility model provides a kind of USB power supply device of audio frequency power amplifier, this USB power supply device can not only guarantee the USB power supply port in supply district, and the maximum musical power greater than the USB output power can be provided.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: comprise USB power supply, flow restricter, booster circuit, battery, USB power supply, flow restricter, booster circuit, battery are connected successively.
In the USB power supply device of above-mentioned audio frequency power amplifier, also comprise temperature rise and be full of protective circuit, described temperature rise and be full of protective circuit and link to each other with booster circuit, battery respectively.
Technique effect of the present utility model is: the utility model with the USB power supply behind flow restricter, booster circuit to battery charge, with musical power hour not the power storage of usefulness be used for musical power when big, the MPO music power output maximum can reach 20W like this, is far longer than the 2.5W power of USB power supply.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings
Fig. 1 is the structure chart of the utility model embodiment one.
Fig. 2 is the utility model embodiment two structured flowchart when being used in combination with power amplifier.
Fig. 3 is the circuit theory diagrams of Fig. 2.
Embodiment
Referring to Fig. 1; embodiment one of the present utility model comprises USB power supply, flow restricter, booster circuit, battery, temperature rise and is full of protective circuit; USB power supply, flow restricter, booster circuit, battery are connected successively; after the USB interface power supply inserts; with the constant-current source current limliting is 500mA, charges the battery with booster circuit again.Such battery energy storage is powered to power amplifier, makes the musical power of power amplifier output can reach 20W.
Referring to Fig. 2 and Fig. 3; compare with embodiment one shown in Figure 1; the power supply circuits of embodiment two have increased temperature rise and have been full of protective circuit; temperature rise and be full of protective circuit and link to each other with booster circuit, battery respectively; temperature rise and be full of protective circuit and can raise and voltage is protected electric supply installation when being full of in temperature, the output termination power amplifier of battery is provided the power supply of power amplifier by battery; the input termination audio signal of power amplifier, its output termination loud speaker.Because music signal shows as the variable condition that height rises and falls, music signal is not constant, and the power averaging level of music is roughly 1/8 of maximum musical power, (and the power supply supply must be greater than maximum musical power, otherwise maximum concert distortion).Remaining 7/8 for not using power.The utility model can be stored these and not use power, supplies the power that is complementary according to the variation of music level simultaneously.USB interface has only the power supply of 5V*500mA=2.5W.Maximum musical power can reach 20W (10W*2 sound channel).
Claims (3)
1, a kind of USB power supply device of audio frequency power amplifier is characterized in that: comprise USB power supply, flow restricter, booster circuit, battery, USB power supply, flow restricter, booster circuit, battery are connected successively.
2, the USB power supply device of audio frequency power amplifier according to claim 1 is characterized in that: also comprise temperature rise and be full of protective circuit, temperature rise and be full of protective circuit and link to each other with booster circuit, battery respectively.
3, the USB power supply device of audio frequency power amplifier according to claim 1 and 2 is characterized in that: described flow restricter is a constant-current source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200955046U CN201230275Y (en) | 2008-07-11 | 2008-07-11 | USB electric power supply apparatus with audio power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200955046U CN201230275Y (en) | 2008-07-11 | 2008-07-11 | USB electric power supply apparatus with audio power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201230275Y true CN201230275Y (en) | 2009-04-29 |
Family
ID=40635217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200955046U Expired - Fee Related CN201230275Y (en) | 2008-07-11 | 2008-07-11 | USB electric power supply apparatus with audio power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201230275Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825450A (en) * | 2012-11-19 | 2014-05-28 | 中兴通讯股份有限公司 | Time division multiple access load system USB interface power supply method and power supply apparatus |
-
2008
- 2008-07-11 CN CNU2008200955046U patent/CN201230275Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825450A (en) * | 2012-11-19 | 2014-05-28 | 中兴通讯股份有限公司 | Time division multiple access load system USB interface power supply method and power supply apparatus |
| CN103825450B (en) * | 2012-11-19 | 2017-03-22 | 中兴通讯股份有限公司 | Time division multiple access load system USB interface power supply method and power supply apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN MEIZHIZUN ELECTRONICS TECHNOLOGY CO., LTD Free format text: FORMER OWNER: YAN XIAOGUI Effective date: 20100427 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518103 MEIZHIZUN COMPANY, ALANS INDUSTRY PARK, FUYING 2ND INDUSTRY AREA, TANGWEI VILLAGE, FUYONG TOWN, BAO'AN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 523408 NO.33, HEHE ROAD, XIANGXI MANAGEMENT DISTRICT, LIAOBU TOWN, DONGGUAN CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100427 Address after: 523408, 33, Hopewell Road, Liaobu Town, Dongguan Town, Guangdong, China Patentee after: Dongguan Meizhizun Electronics Technology Co., Ltd. Address before: 518103 Guangdong city of Shenzhen province Baoan District Fuyong Zhen Tang Wei Cun Arran Fuying Second Industrial Zone Industrial Park Shi beauty statue Patentee before: Yan Xiaogui |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20160711 |