CN209169932U - A kind of band turns the USB output protection circuit of lamp - Google Patents
A kind of band turns the USB output protection circuit of lamp Download PDFInfo
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- CN209169932U CN209169932U CN201822024709.1U CN201822024709U CN209169932U CN 209169932 U CN209169932 U CN 209169932U CN 201822024709 U CN201822024709 U CN 201822024709U CN 209169932 U CN209169932 U CN 209169932U
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- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 230000005611 electricity Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Abstract
The utility model discloses the USB output protection circuits that a kind of band turns lamp, including input signal IN+, capacitor C1, resistance R1, resistance R3, triode 8550, Q Pmso pipe, one end of the capacitor C1 is connected with the first electric wire ground terminal GND, the one end the resistance R1 is connected with resistance R2, the resistance R2 is connect with the first electric wire ground terminal GND, the protection circuit of the utility model, R1, R2, R3, R4, the output circuit of TL431 composition pressure stabilizing 5.5V, when the voltage of IN+ input is lower than 5.5V, Q Pmos normally is to subsequent mobile phone or loads charging LED2 lamp bright green at this time, when the voltage of IN+ input is higher than setting value 5.5V, the conducting of triode 8550 at this time drags down P MOS voltage L ED1 lamp, which sends out a warning, reminds this voltage hazard, has the function that protection without output at this time, the utility model has the advantages that such circuit, composition is simple, intuitively can see whether voltage is normal to consumer very, if safety can protect the safety of consumer.
Description
Technical field
The utility model relates to charge protector design fields, it particularly relates to which the USB output that a kind of band turns lamp is protected
Protection circuit.
Background technique
In view of power circuit, there are some unstable factors, and are designed to prevent such unstable factor from influencing circuit effect
The circuit of fruit, which is referred to as, protects circuit.Than if any overcurrent protection, overvoltage protection, overheating protection, no-load protection, short-circuit protection etc..
Emergency light product currently on the market is mostly that lead-acid battery band USB is charged the phone, the output voltage of many products
It is unstable and be greater than 5.5V, and intuitively feel whether voltage is normal to consumer without USB output indicator, if peace
Entirely.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Utility model content
For the problems in the relevant technologies, the utility model proposes a kind of full seal type cold shrinking power cable adjuncts, existing to overcome
There is above-mentioned technical problem present in the relevant technologies.
The technical solution of the utility model is achieved in that
A kind of band turns the USB output protection circuit of lamp, including input signal IN+, capacitor C1, resistance R1, resistance R3, three-level
Pipe 8550, Q Pmso pipe, one end of the capacitor C1 is connected with first one end electric wire ground terminal GND, the resistance R1 and is connected with
Resistance R2, the resistance R2 are connect with the first electric wire ground terminal GND, and the one end the resistance R2 is connected with the second electric wire ground connection
GND is held, one end is connected with resistance R4 on the resistance R3, and the one end the resistance R4 is connected with controllable accurate source of stable pressure TL431, institute
It states controllable accurate source of stable pressure TL431 to connect with the first electric wire ground terminal GND, one end of the triode 8550 is connected with electricity
R4 is hindered, the resistance R4 is connect with the first electric wire ground terminal GND, and described Q Pmso pipe one end is connected with LED light 2, described
LED light 1 is connected in LED light 2, the LED light 1 is connect with the triode 8550, the LED light 2 and the LED light 1
One end is connected with resistance R5, and the R5 is connect with the first electric wire ground terminal GND, and the input signal IN+ is connected with anode
Output signal OUT+, one end of the output signal OUT+ are connected with capacitor C2, and the capacitor C2 and first electric wire are grounded
GND connection is held, one end of the capacitor C2 is connected with cathode output signal OUT-.
Further, the LED light 2 is in parallel with the LED light 1.
Further, the capacitor C1 and capacitor C2 is electrolytic capacitor.
The utility model has the following beneficial effects: the protection circuit of the utility model, R1, R2, R3, R4, TL431 form pressure stabilizing 5.5V
Output circuit, when IN+ input voltage be lower than 5.5V when, Q Pmos normally to subsequent mobile phone or load charging at this time
LED2 lamp bright green, when the voltage of IN+ input is higher than setting value 5.5V, the conducting of triode 8550 at this time drags down P MOS voltage
LED1 lamp, which sends out a warning, reminds this voltage hazard, has the function that protection without output at this time, and such circuit, composition is simple, can be with
Intuitively see whether voltage is normal to consumer very, if safety can protect the safety of consumer.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the structure principle chart for turning the USB output protection circuit of lamp according to a kind of band of the utility model embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art's every other embodiment obtained, all belongs to
In the range of the utility model protection.
Embodiment according to the present utility model provides the USB output protection circuit that a kind of band turns lamp.
As shown in Figure 1, turning the USB output protection circuit of lamp according to a kind of band of the utility model embodiment, including input
Signal IN+, capacitor C1, resistance R1, resistance R3, triode 8550, Q Pmso pipe, one end of the capacitor C1 are connected with the first electricity
The one end line ground terminal GND, the resistance R1 is connected with resistance R2, and the resistance R2 is connect with the first electric wire ground terminal GND,
The one end the resistance R2 is connected with one end on the second electric wire ground terminal GND, the resistance R3 and is connected with resistance R4, the resistance R4
One end is connected with controllable accurate source of stable pressure TL431, the controllable accurate source of stable pressure TL431 and the first electric wire ground terminal GND
Connection, one end of the triode 8550 are connected with resistance R4, and the resistance R4 is connect with the first electric wire ground terminal GND,
Described Q Pmso pipe one end is connected with LED light 2, and LED light 1, the LED light 1 and the triode are connected in the LED light 2
One end of 8550 connections, the LED light 2 and the LED light 1 is connected with resistance R5, the R5 and the first electric wire ground terminal
GND connection, the input signal IN+ are connected with positive output signal OUT+, and one end of the output signal OUT+ is connected with electricity
Hold C2, the capacitor C2 is connect with the first electric wire ground terminal GND, and one end of the capacitor C2 is connected with cathode output signal
OUT-。
In addition, in one embodiment, the LED light 2 is in parallel with the LED light 1.
In addition, in one embodiment, the capacitor C1 and capacitor C2 are electrolytic capacitor.
In conclusion by means of the above-mentioned technical proposal of the utility model, the protection circuit of the utility model, R1, R2, R3, R4,
TL431 forms the output circuit of pressure stabilizing 5.5V, when the voltage of IN+ input is lower than 5.5
When V, Q Pmos normally is to subsequent mobile phone or loads charging LED2 lamp bright green at this time, when IN+ input
Voltage be higher than setting value 5.5V when, at this time triode 8550 conducting drag down P MOS voltage LED1 lamp send out a warning remind this voltage endanger
Danger has the function that protection without output at this time, and such circuit, composition is simple, intuitively can see voltage to consumer very
It is whether normal, if safety can protect the safety of consumer.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (3)
1. the USB output protection circuit that a kind of band turns lamp, which is characterized in that including input signal IN+, capacitor C1, resistance R1, electricity
R3, triode 8550, Q Pmso pipe are hindered, one end of the capacitor C1 is connected with the first electric wire ground terminal GND, the resistance R1 mono-
End is connected with resistance R2, and the resistance R2 is connect with the first electric wire ground terminal GND, and the one end the resistance R2 is connected with second
One end is connected with resistance R4 on electric wire ground terminal GND, the resistance R3, and the one end the resistance R4 is connected with controllable accurate source of stable pressure
TL431, the controllable accurate source of stable pressure TL431 are connect with the first electric wire ground terminal GND, one end of the triode 8550
It is connected with resistance R4, the resistance R4 is connect with the first electric wire ground terminal GND, and described Q Pmso pipe one end is connected with LED
Lamp 2 is connected with LED light 1 in the LED light 2, and the LED light 1 is connect with the triode 8550, the LED light 2 with it is described
One end of LED light 1 is connected with resistance R5, and the R5 is connect with the first electric wire ground terminal GND, and the input signal IN+ connects
It is connected to positive output signal OUT+, one end of the output signal OUT+ is connected with capacitor C2, the capacitor C2 and described first
The GND connection of electric wire ground terminal, one end of the capacitor C2 are connected with cathode output signal OUT-.
2. the USB output protection circuit that a kind of band according to claim 1 turns lamp, which is characterized in that the LED light 2 with
The LED light 1 is in parallel.
3. the USB output protection circuit that a kind of band according to claim 1 turns lamp, which is characterized in that the capacitor C1 and
Capacitor C2 is electrolytic capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822024709.1U CN209169932U (en) | 2018-12-04 | 2018-12-04 | A kind of band turns the USB output protection circuit of lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822024709.1U CN209169932U (en) | 2018-12-04 | 2018-12-04 | A kind of band turns the USB output protection circuit of lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209169932U true CN209169932U (en) | 2019-07-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822024709.1U Active CN209169932U (en) | 2018-12-04 | 2018-12-04 | A kind of band turns the USB output protection circuit of lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209169932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405705A (en) * | 2020-03-25 | 2020-07-10 | 赛尔富电子有限公司 | Dimming L ED controller and output short-circuit protection method |
-
2018
- 2018-12-04 CN CN201822024709.1U patent/CN209169932U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405705A (en) * | 2020-03-25 | 2020-07-10 | 赛尔富电子有限公司 | Dimming L ED controller and output short-circuit protection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231207 Address after: 529000 Room 203, Floor 2, Building 1, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee after: Jiangmen Xiaosong Intelligent Technology Co.,Ltd. Address before: 529085 301, Floor 3, Building 2, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee before: JIANGMEN PENGJIANG DISTRICT JINYING TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |