CN2548184Y

CN2548184Y - A.C.-D.C. two-purpose power circuit for mobile telephone

Info

Publication number: CN2548184Y
Application number: CN02239548U
Authority: CN
Inventors: 郑怀洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-25
Filing date: 2002-06-25
Publication date: 2003-04-30
Anticipated expiration: 2012-06-25

Abstract

Disclosed is a universal cellphone power supply circuit which comprises a cellphone charging circuit comprising a transformer, a bridge type rectification circuit and a filter circuit, etc, a voltage regulator output circuit and a power supply circuit inside the cellphone. The utility model is characterized in that the voltage regulator output circuit comprises a three-terminal voltage regulator integrated block and a filter capacity C#-3. and passes a rectified output end of a function selecting switch k#-1 which is connected in the cellphone charging circuit. A power supply E loop inside the cellphone is in series connection with a slight-acting spring switch K#-2, thus a universal cellphone power supply circuit is comprised. When in use, put the cellphone into a charger seat, a plug of a cellphone charger is inserted into a commercial power socket, then a battery circuit inside the cellphone is cut and the commercial power supplies power to the cellphone.

Description

DC-AC two-use cellular phone power supplies circuit

The utility model belongs to a kind of improvement technology of cellular phone power supplies circuit.

Existing mobile phone all is to use chargeable battery as power supply.A battery compartment is arranged in mobile phone, and rechargeable battery is packed into to get final product.Though convenient the use also is easy to carry.But limited because of the electric weight of rechargeable battery, need often charging, thereby bring some inconvenience to the user.A rechargeable battery to discharge and recharge number of times many more, its serviceable life is approaching more termination just, the price of rechargeable battery is also higher in addition, can increase the cost of use of mobile phone to the user.For the user of work position in office, its activity time mainly concentrates in office and the family, supply with the mobile phone electric energy as if the use civil power during this, just can save consumption to rechargeable battery in the machine, thereby prolong the service time of rechargeable battery, reduce the frequency of charging, just can prolong the serviceable life of rechargeable battery.

The technical problems to be solved in the utility model is to do some improvement on the existing charging circuit of mobile phone, and it can be working power with rechargeable battery in the machine that mobile phone is reached; And at home or in the office time, can be working power with the civil power, and cut off automatically or the connection machine in the DC-AC two-use cellular phone power supplies circuit of feed circuit of rechargeable battery.

The concrete scheme that solves the problems of the technologies described above is as follows:

A kind of DC-AC two-use cellular phone power supplies circuit, the power circuit of cell phone charging circuit, voltage-stabilizing output circuit and the mobile phone inside that is made of transformer, bridge rectifier circuit, filtering circuit etc. is formed.Key is that described voltage-stabilizing output circuit is by a three-terminal voltage-stabilizing integrated package and filter capacitor C ₃Constitute, and by a functional select switch k ₁Be connected on the rectification output end of cell phone charging circuit, hair K switch of serial connection on the electric power loop in mobile phone ₂, so just constitute a DC-AC two-use cellular phone power supplies circuit.

Further scheme is on the charger for mobile phone seat, and one of attaching is used for hair K switch in the machine ₂The top button that backs down, in handset shell bottom in the machine hair K switch ₂Having one with the place of button position, top on the charger seat allows the top button stretch into aperture in the machine.

Just can make a DC-AC two-use cellular phone power supplies circuit according to the method described above.During use, functional select switch K ₁Be allocated to mobile phone and use city's electricity condition.Mobile phone is placed on the charger for mobile phone seat, mobile phone and the civil power through step-down rectifier filtering are connected in two contacts of the original charging usefulness of mobile phone and two contacts on the handset charging holder, simultaneously the top button on the charger for mobile phone seat is gone in the mobile phone shell, the hair K switch from aperture is overhanging ₂Back down, disconnect the current supply circuit of the rechargeable battery in the mobile phone.The mobile phone of this moment just uses civil power work.When mobile phone when charger takes off, the hair switch resets, the current supply circuit of rechargeable battery in the connection machine, mobile phone uses battery operated.

If will charge to self-contained battery, then functional select switch is allocated to charged state, at this moment, with battery take out in the mobile phone be put in the charger seat just chargeable.

The utility model has the advantages that and on the output circuit of charger for mobile phone, insert a three-terminal voltage-stabilizing integrated package and filter capacitor C ₃The mu balanced circuit that constitutes, its output voltage are selected for use and are fit to the rated voltage that mobile phone uses.Mobile phone just can directly use civil power that the operating handset power supply is provided by the charger seat, and need not consume the electric energy of rechargeable battery in the machine in office and family the time.Can reduce charge frequency, prolong the rechargeable battery life-span.In addition, the scheme that doing to carry out the utility model on the power circuit of cell phone charging circuit and mobile phone inside provides is improved, and technology is simple, realizes easily.Increase much costs can for the production of mobile phone.Thereby make mobile phone increase the part advantage of base.

Fig. 1, electrical schematic diagram of the present utility model;

Fig. 2, the utility model user mode schematic diagram;

Aperture and the functional select switch mounting means figure on the charger seat on Fig. 3, the mobile phone bottom shell.

Below in conjunction with accompanying drawing,, such scheme is specified as an embodiment.

With reference to Fig. 1,2,3, be the circuit of charger for mobile phone 13 in the frame of broken lines, it is by the transformer B that civil power is become 10V, by D ₁One D ₄The bridge rectifier circuit that constitutes and be parallel to C in the circuit ₁, C ₂The compositions such as filtering circuit that constitute.Its output terminal is K by functional select switch 12 ₁Be used to connect the A` point, promptly connect the original charging circuit of mobile phone, battery E is charged; Be used to connect the A point, just civil power passed through three-terminal voltage-stabilizing integrated package and C ₃The mu balanced circuit that constitutes is directly to electric loading 1 being mobile phone G power supply.The three-terminal voltage-stabilizing integrated package adopts 7808 types, filter capacitor C ₃For connecing the charger output terminal, 10u constitutes.This is that actual measurement is 8.2 volts because the battery of mobile phone rated voltage that present embodiment adopts is 7.2 volts, so adopt 7808 type three-terminal voltage-stabilizing integrated packages.In the electric power loop of mobile phone 11, connect a hair K switch ₂Two contact b on the handset charging holder 5 like this ₁, b ₂Be power output end, two contact b on the mobile phone ₃, b ₄For the input end of power supply, provide the electric energy that comes from civil power for mobile phone 11 to the mobile phone power supply.

With reference to Fig. 2,3,1, a top button 8 is installed on handset charging holder 5, in the position of the top button 8 of mobile phone 11 casing lower bottom parts on the cradle, have one and allow top button 8 stretch into aperture 6 in the casing, the conversion mobile phone uses self-contained battery or uses the hair switch 10 of civil power is K ₂Just be installed in the bottom in the casing and be positioned at aperture 6 places.Functional select switch 12 is K ₁Then be installed in a side of charger for mobile phone seat 5.

With reference to Fig. 1,3, single-pole double-throw switch (SPDT) K ₁Promptly 12 are used to charge and also are to use the functional select switch of civil power for mobile phone 11.b ₁, b ₂Promptly 4,7 is two resilient contacts on the charger for mobile phone seat 5, b ₃, b ₄Promptly 3,9 is two power contacts of mobile phone shell bottom.Work as K ₁When being allocated to the A end, the utility model is supplied with the work energy that comes from civil power to mobile phone; Work as K ₁When being allocated to the A` end,, charger, charge but must in mobile phone, take out battery by the battery E charging of civil power in mobile phone.By three-terminal voltage-stabilizing integrated package 7808 and C ₃The mu balanced circuit and the functional select switch K that constitute ₁Be installed in the charger for mobile phone seat 5.The three-terminal voltage-stabilizing integrated package is selected the device of corresponding 78xx type according to the rated voltage of the employed battery of mobile phone, also can select the adjustable integrated package of pressure-stabilizing of LM317 type for use, so that can obtain the operating voltage that is complementary with mobile phone flexibly.Present embodiment is with Siemens S ₄The electricity consumption of mobile phone requires design, and the parameter of the used rechargeable battery rated voltage of this machine is 7.2 volts, and actual measurement is more than 8 volts, so select one 7808 three-terminal voltage-stabilizing integrated package for use.

In order to make mobile phone power down shutdown phenomenon in the transfer process of using civil power and self-contained battery, not occur, during as the incoming call ring, in the charger seat takes off or insert the charger seat time, the problem of shutting down voluntarily can occur to mobile phone.Need snap switch K ₂Top button 8 make to such an extent that could make when the charger seat takes off mobile phone than the height of two resilient contacts 4,7 on the cradle is low slightly, after the self-contained battery circuit is connected in choosing, just can allow the contact 4,7 on the charger seat and the contact 3,9 of mobile phone bottom disconnect, stop the power supply of civil power.Otherwise, when inserting mobile phone on the charger seat, after then elder generation connects the mains-supplied circuit, feed circuit in the ability disconnection machine.The requirement of not power down in having guaranteed to use.

The improvement of the existing charging circuit of mobile phone and mobile phone internal power supply circuit being carried out according to the disclosed technology of the utility model, help prolonging the operating period of rechargeable cellphone battery, reduce charging times, rechargeable battery extends to more than 15 days and fills once by filling once electricity in general 3 days, also just reduce the mobile phone cost of use, also make mobile phone have the partial action of indoor fixed telephone.For providing a kind of manufacturing, mobile phone production firm is suitable for the technology of DC-AC two-use mobile phone.

Claims

1, a kind of DC-AC two-use cellular phone power supplies circuit, the power circuit of cell phone charging circuit, voltage-stabilizing output circuit and the mobile phone inside that is made of transformer, bridge rectifier circuit, filtering circuit etc. is formed; It is characterized in that described voltage-stabilizing output circuit is by a three-terminal voltage-stabilizing integrated package and filter capacitor C ₃Constitute, and by a functional select switch k ₁Be connected on the rectification output end of cell phone charging circuit, hair K switch of serial connection on the power supply E loop in mobile phone (11) ₂, so just constitute a DC-AC two-use cellular phone power supplies circuit.

2, according to the described a kind of DC-AC two-use cellular phone power supplies circuit of claim 1, it is characterized in that on charger for mobile phone seat (5), one of attaching is used for hair K switch in the machine ₂The top button (8) that backs down, in handset shell bottom in the machine hair K switch ₂Having one with the place of top button (8) position on the charger seat (5) allows top button (8) stretch into aperture (6) in the machine.