CN201134688Y - Charger for emergency - Google Patents
Charger for emergency Download PDFInfo
- Publication number
- CN201134688Y CN201134688Y CNU2007201876070U CN200720187607U CN201134688Y CN 201134688 Y CN201134688 Y CN 201134688Y CN U2007201876070 U CNU2007201876070 U CN U2007201876070U CN 200720187607 U CN200720187607 U CN 200720187607U CN 201134688 Y CN201134688 Y CN 201134688Y
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- Prior art keywords
- circuit
- charger
- voltage
- filter circuit
- capacitor
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Abstract
The utility model provides an emergency charger, which is characterized in that the emergency charger comprises a protection circuit, a voltage reduction circuit and a filter circuit, the connection mode is that the input end of the protection circuit is connected with a telephone network line, the output end of the protection circuit is connected with the input of the pressure reduction circuit, the output end of the voltage reduction circuit is connected with the input end of the filter circuit, and the output end of the filter circuit is connected with the input end of a used electric apparatus. The protection circuit can be a diode D1, the protection circuit can also be formed by a self-recover fuse R3 and the diode D1 which are connected in series, the voltage reduction circuit can be formed by a resistor and a voltage-stabilizer tube circuit, and can also be formed by an integrated circuit and a voltage-stabilizer tube circuit. The filter circuit can be a reversed V-shaped or a reversed U-shaped filter circuit which is formed by an electric inductance L and a capacitor C. The emergency charger is suitable for temporary stand-by low power charger when service interruption and no light occur. The emergency charger can utilize telephone circuit current to temporally charge for used electric apparatuses when no electrified wire netting supplies electricity. The emergency charger has simple structure and low production cost, which simultaneously does not influence call answer and call outgoing.
Description
Technical field:
The utility model relates to a kind of charger, particularly a kind of charger for emergency, and when it is useful in and has a power failure, during no sunlight, standby small-power charger temporarily.
Background technology:
It is following several that present charger provides the source of the energy to be divided into according to it:
The first kind: electrical network AC charging type, this type are common employed charger, and its shortcoming is apparent, and volume is big, and inconvenience is carried, and the place of alternating current need be provided.
Second class, the solar recharging type, Chinese patent CN1591963 discloses a kind of " solar charger ", and this charger mainly is energy source with solar energy.Its shortcoming: power supply capacity is limited by exposed area and sunlight strength, and cost is than the like product height simultaneously.
The 3rd class, mechanical energy charge type, Chinese patent CN2681426 disclose a kind of " emergent charger for cell phone ", it is to provide mechanical energy to charge by hand or other manpower, the shortcoming of this charger: charge volume depends on the hand time, so its charge volume is generally very little, can not continue.
The 4th class, battery charge type, Chinese patent CN2664257 discloses a kind of " rechargeable battery formula emergent charger for cell phone ", this charger, with the battery is power supply, is mobile phone, the power supply of digital equipments such as mp3, its advantage can be a cell-phone charging at any time, and is not affected by environment.Its shortcoming: prepare battery.
The utility model content:
The purpose of this utility model is a kind of charger for emergency of developing at above problem, it is in order to solve some special area, the sudden power of emergency, outlying district or power tense area, need logarithmic code equipment this problem of charging, this charger need not electric network source, need only indoorly have telephone line interface.Obtain the 48V direct current as power supply energy by telephone wire.
The technical solution of the utility model is achieved in that
Charger for emergency is to be made of protective circuit, reduction voltage circuit, filter circuit; its connected mode connects telephone network line for the protective circuit input; the protective circuit output connects the reduction voltage circuit input; the reduction voltage circuit output connects the filter circuit input, and the filter circuit output connects the electrical appliance input.
The technical solution of the utility model can be achieved in that protective circuit can be a diode D1; Protective circuit also can be to be made of runback fuse R3 and diode D1 series connection; Reduction voltage circuit can be made of resistance and voltage-stabiliser tube circuit, also can be made of integrated circuit and voltage-stabiliser tube circuit.
The technical solution of the utility model can also be achieved in that reduction voltage circuit is by integrated circuit MAX427H, voltage-stabiliser tube MBR745, variable resistor R1 and resistance R 2, R4, capacitor C 2, C3, C4 and inductance L 2 constitute, and capacitor C 4 meets the input V of integrated circuit MAX427H
N, other end ground connection meets the V of integrated circuit MAX427H behind resistance R 4 and capacitor C 3 polyphones
CEnd, other end ground connection, voltage-stabiliser tube MB745 and the V that meets integrated circuit MAX427H after inductance L 2 is connected
SWEnd, the other end ground connection of voltage-stabiliser tube MB745, another termination variable resistor R1 of inductance L 2, the other end of variable resistor R1 and the F that meets integrated circuit MAX427H after resistance R 2 is connected
8End, the other end ground connection of resistance R 2, a termination inductance L 2 of capacitor C 2 and the junction of variable resistor R1, other end ground connection.
Filter circuit can be made up of inductance L and capacitor C
Type or " ∏ " type filter circuit; Filter circuit also can be made up of capacitor C 1 and inductance L 1
The type filter circuit.
Good effect of the present utility model is: this product can utilize the telephone wire electric current that power consumption equipment is carried out when not having mains supply, temporary transient charging, and the utility model is simple in structure, and is with low cost, also do not influence to connect simultaneously to make a phone call.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment:
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1; inductance L 1, L2 are filter inductance among the figure, and capacitor C 1, C2, C4 are filter capacitor, and R1 is a variable resistor; can adjust the charging output voltage; MBR745 is a voltage stabilizing didoe, and R3 is the runback fuse, if electric current is excessive; runback fuse R3 disconnects; when electric current recovers normal, runback fuse R3 can connect again automatically, and runback fuse R3 is used for protecting charger.D1 is a diode, and R2 is a feedback resistance, and MAX427H is an integrated circuit, 10-60 can be lied prostrate voltage transitions and become voltage about 5 volts.Resistance of the present utility model, electric capacity and inductance all do not have specific (special) requirements, and market is on sale, and correlative technology field technical staff logarithm value can be estimated.During use,, telephone wire is inserted this charger,, change the both positive and negative polarity that enters charger, in order to avoid the chip reverse operation then by manual reverse of direction device (being switch) by deconcentrator.After electric current has passed through phase changer, lead to runback fuse R3 again, if electric current excessive (thunderous hit telephone wire or when conversation), runback fuse R3 disconnects, and when electric current recovers normal, runback fuse R3 can connect again.So runback fuse R3 is used for protection to be recharged equipment and to burn out in case electric current is excessive.Behind runback fuse R3, by diode D1 to prevent current reversal work.D1 comes out from diode, enters reduction voltage circuit, by the reduction voltage circuit of being made up of integrated circuit MAX427H, can become 5V left and right sides voltage (by variable resistor R1, realizing changing between the voltage 2-6 volt) to the 10V-60V voltage transitions.The filter of being made up of inductance L 1, capacitor C 1 carries out filtering to output current at last, after the filtering, produces the charging voltage of reliable quality.Thereby realize the charging purpose.
As shown in Figure 1, as to cell-phone charging.Variable resistor R1 is adjusted to the mobile phone shelves, promptly to external enwergy output 4.3V voltage, go up telephone network line by the deconcentrator connection, at this moment, output voltage can reach 4.3V, connects mobile phone by proprietary line.Promptly begin mobile phone is charged.
As shown in Figure 1, if during, variable resistor R1 is adjusted to these equipment rated voltages slightly high (exceeding 0.1-0.3V) to other data equipment or battery charge.Go up telephone network line by the deconcentrator connection.At this moment, output voltage output is gone up power consumption equipment by corresponding coupling connection again.Promptly begin power consumption equipment is charged.
Claims (7)
1, a kind of charger for emergency; its spy is: be to be made of protective circuit, reduction voltage circuit, filter circuit; its connected mode connects telephone network line for the protective circuit input; the protective circuit output connects the reduction voltage circuit input; the reduction voltage circuit output connects the filter circuit input, and the filter circuit output connects the electrical appliance input.
2, charger for emergency according to claim 1 is characterized in that: protective circuit is a diode D1.
3, charger for emergency according to claim 1 is characterized in that: protective circuit is to be made of runback fuse R3 and diode D1 series connection.
4, charger for emergency according to claim 1 is characterized in that: reduction voltage circuit can be made of resistance and voltage-stabiliser tube circuit, also can be made of integrated circuit and voltage-stabiliser tube circuit.
5, charger for emergency according to claim 1, it is characterized in that: reduction voltage circuit is by integrated circuit MAX427H, voltage-stabiliser tube MBR745, variable resistor R1 and resistance R 2, R4, capacitor C 2, C3, C4 and inductance L 2 constitute, and capacitor C 4 meets the input V of integrated circuit MAX427H
N, other end ground connection meets the V of integrated circuit MAX427H behind resistance R 4 and capacitor C 3 polyphones
CEnd, other end ground connection, voltage-stabiliser tube MB745 and the V that meets integrated circuit MAX427H after inductance L 2 is connected
SWEnd, the other end ground connection of voltage-stabiliser tube MB745, another termination variable resistor R1 of inductance L 2, the other end of variable resistor R1 and the F that meets integrated circuit MAX427H after resistance R 2 is connected
8End, the other end ground connection of resistance R 2, a termination inductance L 2 of capacitor C 2 and the junction of variable resistor R1, other end ground connection.
6, charger for emergency according to claim 1 is characterized in that: filter circuit can be made up of inductance L and capacitor C
Shape or " ∏ " shape filter circuit.
7, charger for emergency according to claim 1 is characterized in that: filter circuit is made up of capacitor C 1 and inductance L 1
The shape filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201876070U CN201134688Y (en) | 2007-12-25 | 2007-12-25 | Charger for emergency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201876070U CN201134688Y (en) | 2007-12-25 | 2007-12-25 | Charger for emergency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201134688Y true CN201134688Y (en) | 2008-10-15 |
Family
ID=40062957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201876070U Expired - Fee Related CN201134688Y (en) | 2007-12-25 | 2007-12-25 | Charger for emergency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201134688Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888457A (en) * | 2010-04-28 | 2010-11-17 | 周玉林 | Two-tone doorbell using telephone feeder line as power supply |
-
2007
- 2007-12-25 CN CNU2007201876070U patent/CN201134688Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888457A (en) * | 2010-04-28 | 2010-11-17 | 周玉林 | Two-tone doorbell using telephone feeder line as power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20101225 |