CN204967895U - Prevent highly compressed cell -phone circuit board - Google Patents
Prevent highly compressed cell -phone circuit board Download PDFInfo
- Publication number
- CN204967895U CN204967895U CN201520660298.9U CN201520660298U CN204967895U CN 204967895 U CN204967895 U CN 204967895U CN 201520660298 U CN201520660298 U CN 201520660298U CN 204967895 U CN204967895 U CN 204967895U
- Authority
- CN
- China
- Prior art keywords
- piezo
- resistance
- circuit board
- current
- resistor
- 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.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a prevent highly compressed cell -phone circuit board, include the power, melt electrical apparatus, switch on the diode, assemble circuit, a piezo -resistor, the 2nd piezo -resistor, current -limiting resistor. The power right side is connected with melts electrical apparatus, it is provided with and switches on the diode to melt electrical apparatus right side downside, it is provided with a piezo -resistor to switch on the diode right side, install the 2nd piezo -resistor below the piezo -resistor. The utility model discloses an intelligent use switches on the diode, directly burns cell -phone circuit board when devices such as current -limiting resistor have been realized preventing the overtension to simple process is makeed moreover to the effectual cell -phone of having protected, has realized high technology level, and manufacturing cost is lower, is fit for the application and promotes.
Description
Technical field
The utility model relates to circuit board of mobile phone field, is specially a kind of circuit board of mobile phone preventing high pressure.
Background technology
Along with electronics, the development of mechanics of communication, the application of electronic product in life gets more and more, and has become a part indispensable in our life.Existing communication apparatus mobile phone, chip integrated more and more higher, the density of circuit board is increasing, thus price is more and more higher, if circuit board of mobile phone also can be made to burn just in case family voltage is high, has so just lost more than gain.Therefore, market is badly in need of a kind of being installed on circuit board of mobile phone one end to realize preventing the circuit of high pressure to protect circuit board of mobile phone.
Summary of the invention
The purpose of this utility model is to provide a kind of circuit board of mobile phone preventing high pressure, to solve the problem proposed in above-mentioned background technology.
The utility model is achieved through the following technical solutions: a kind of circuit board of mobile phone preventing high pressure, comprises power supply, molten electrical equipment, conducting diode, way circuit, the first piezo-resistance, the second piezo-resistance, current-limiting resistance.The described power supply right side is connected with molten electrical equipment, and described molten electrical equipment lower right side is provided with conducting diode, is provided with the first piezo-resistance on the right side of described conducting diode, is provided with the second piezo-resistance below described first piezo-resistance.
Preferably, be provided with current-limiting resistance on the left of described second piezo-resistance, the lower left side of described current-limiting resistance is way circuit, is connected to power supply on the left of described way circuit.
Preferably, described conducting diode and current-limiting resistance are cascaded, and described first piezo-resistance and the second piezo-resistance are cascaded.
Preferably, described conducting diode and current-limiting resistance and the first piezo-resistance and the second piezo-resistance are connected in parallel.
Compared with prior art; the beneficial effects of the utility model are: the utility model is by reasonable employment conducting diode; the devices such as current-limiting resistance achieve when preventing overtension and directly burn circuit board of mobile phone; thus effectively protect mobile phone; and manufacture craft is simple; achieve high-tech level, production cost is lower, is applicable to using promoting.
Accompanying drawing explanation
Fig. 1 is the front view of structure described in the utility model.
In figure: 1, power supply; 2, molten electrical equipment; 3, conducting diode; 4, way circuit; 5, the first piezo-resistance; 6, the second piezo-resistance; 7, current-limiting resistance.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model provides a kind of technical scheme: a kind of circuit board of mobile phone preventing high pressure, comprise power supply 1, molten electrical equipment 2, conducting diode 3, way circuit 4, first piezo-resistance 5, second piezo-resistance 6, current-limiting resistance 7, power supply 1 right side is connected with molten electrical equipment 2, molten electrical equipment 2 lower right side is provided with conducting diode 3, be provided with the first piezo-resistance 5, first piezo-resistance 5 on the right side of conducting diode 3 and second piezo-resistance 6 be installed below.Be provided with current-limiting resistance 7 on the left of second piezo-resistance 6, the lower left side of current-limiting resistance 7 is way circuits 4, is connected to power supply 1 on the left of way circuit 4.Conducting diode 3 and current-limiting resistance 7 are cascaded, and the first piezo-resistance 5 and the second piezo-resistance 6 are cascaded.Conducting diode 3 and current-limiting resistance 7 and the first piezo-resistance 5 and the second piezo-resistance 6 are connected in parallel.
Operation principle: compared to prior art, the utility model is provided with molten electrical equipment 2, conducting diode 3, first piezo-resistance 5, second piezo-resistance 6, current-limiting resistance 7.When high-tension electricity is in high-impedance state by the first piezo-resistance 5, second piezo-resistance 6 of the conducting diode 3 of connecting during circuit board of mobile phone, current-limiting resistance 7 and series connection, when high-tension electricity is about to by circuit board of mobile phone, voltage alleviates high voltage by the first piezo-resistance 5, second piezo-resistance 6 rapidly.Molten electrical equipment is a kind of Thermal Cutoffs, can provide protection for this circuit.Current-limiting resistance 7 as its name suggests, is the effect playing resistance.
More than show and describe general principle of the present utility model, principal character and advantage.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. one kind prevents the circuit board of mobile phone of high pressure, comprise power supply (1), molten electrical equipment (2), conducting diode (3), way circuit (4), the first piezo-resistance (5), the second piezo-resistance (6), current-limiting resistance (7), it is characterized in that: described power supply (1) right side is connected with molten electrical equipment (2), described molten electrical equipment (2) lower right side is provided with conducting diode (3), described conducting diode (3) right side is provided with the first piezo-resistance (5), and described first piezo-resistance (5) is provided with the second piezo-resistance (6) below.
2. a kind of circuit board of mobile phone preventing high pressure according to claim 1, it is characterized in that: described second piezo-resistance (6) left side is provided with current-limiting resistance (7), the lower left side of described current-limiting resistance (7) is way circuit (4), and described way circuit (4) left side is connected to power supply (1).
3. a kind of circuit board of mobile phone preventing high pressure according to claim 1 and 2, is characterized in that: described conducting diode (3) and current-limiting resistance (7) are cascaded, and described first piezo-resistance (5) and the second piezo-resistance (6) are cascaded.
4. a kind of circuit board of mobile phone preventing high pressure according to claim 1, is characterized in that; Described conducting diode (3) and current-limiting resistance (7) are connected in parallel with the first piezo-resistance (5) and the second piezo-resistance (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520660298.9U CN204967895U (en) | 2015-08-29 | 2015-08-29 | Prevent highly compressed cell -phone circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520660298.9U CN204967895U (en) | 2015-08-29 | 2015-08-29 | Prevent highly compressed cell -phone circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204967895U true CN204967895U (en) | 2016-01-13 |
Family
ID=55062932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520660298.9U Expired - Fee Related CN204967895U (en) | 2015-08-29 | 2015-08-29 | Prevent highly compressed cell -phone circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204967895U (en) |
-
2015
- 2015-08-29 CN CN201520660298.9U patent/CN204967895U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204967895U (en) | Prevent highly compressed cell -phone circuit board | |
| CN106782955A (en) | Piezoresistive element with overtemperature protection | |
| CN203278068U (en) | Fuse handcart for centrally-installed switchgear | |
| CN203387159U (en) | Short circuit protection circuit of triode voltage stabilizing circuit | |
| CN202749810U (en) | Novel composite structure of circuit protector | |
| CN204102542U (en) | A kind of display module | |
| CN209045264U (en) | A kind of Thermal protection type varistor | |
| CN206098855U (en) | Short circuit auto -power -off picture peg | |
| CN103050958B (en) | Piezoresistor type surge protection device | |
| CN204205571U (en) | A kind of lithium battery protection board circuit based on 0 Europe resistive element | |
| CN203103941U (en) | Piezoresistor type surge protection device | |
| CN203242228U (en) | Novel bread board | |
| CN204991470U (en) | Condenser with high temperature protect function | |
| CN105552653A (en) | lightning protection type power extension cord | |
| CN203942700U (en) | A kind of safety-type circuit plate | |
| CN202949098U (en) | Universal alternating current/direct current plug with lamp within wide voltage range | |
| CN203951174U (en) | A kind of lithium battery protection board circuit based on 0 Europe resistive element | |
| CN204144621U (en) | A kind of novel RJ45 adapter | |
| CN201877803U (en) | Direct-current motor protection circuit | |
| CN203760782U (en) | Secure type power socket and power extension device with the same | |
| CN202872355U (en) | Lightening protection circuit | |
| CN208571596U (en) | A kind of onboard surge protector of 40kA | |
| CN206575133U (en) | A kind of Programmable AC Power Source output short circuit protection circuit | |
| CN202145515U (en) | Lightning protective socket | |
| CN202613523U (en) | Power supply safety device of microwave oven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160509 Address after: 518104 Guangdong city of Shenzhen province Baoan District manhole Street sand two Haixin garden V4 2 unit 302 room Patentee after: Shenzhen Qilu Electronics Co., Ltd. Address before: Tao Zhu Jie Dao Song Jia fan Cun, Shaoxing City, Zhejiang Province, the 311816 Zhuji City No. 992 Patentee before: Song Guofeng |
|
| 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: 20160113 Termination date: 20200829 |