CN2434849Y - Energy saver of mobile telephone - Google Patents

Abstract

The utility model relates to an energy saving device of a mobile telephone, which comprises a circuit board, a screen display illuminating control circuit, and a keyboard display illuminating control circuit. The utility model is characterized in that the screen display illuminating circuit comprises resistors R1, R2, a photoresistor RG1, and analog switches K1, K2; R1 and R2 which are connected in series with each other are respectively connected with the positive terminal of a power source and the ground; the foot 1 of K1 is connected with a point P on the connecting wire of R1 and RG1; the foot 1 of K2 is connected with the foot 3 of K1; the foot 3 of K2 is connected with the base electrode of G1; the key board display circuit comprises resistors R6, R7, a photoresistor RG2, and analog switches K3, K4; R6 and RG2 which are connected in series with each other are respectively connected with the positive terminal of the power source and the ground; the foot 1 of K3 is connected with a point P2 on the connecting wire of R6 and RG2; the foot 1 of K4 is connected with the foot 3 of K3; the foot 3 of K3 is connected with the base electrode of G2. The utility model has the advantage that the electricity of mobile phones can be effectively saved.

Description

The mobile phone power-saving device

The utility model relates to a kind of electricity-saving appliance, particularly relates to a kind of being installed in the handset shell, realizes the electricity-saving appliance that economizes on electricity by control display lighting, keyboard illumination.

It is very fast that mobile phone is popularized use in China, and almost all there is 1--2 portion mobile phone in each family in big and medium-sized cities.But the screen display of mobile phone throws light on, keyboard display lighting power consumption is very big, influences the service time of mobile phone communication, increases cell charging times, influences the useful life of battery.

The purpose of this utility model when providing a kind of use mobile phone, can be opened screen and keyboard illumination when light is weak automatically, can close the mobile phone power-saving device of screen illumination and keyboard illumination when light is strong automatically.

Above-mentioned purpose of the present utility model realizes by following technical proposals, that is:

The mobile phone power-saving device comprises housing and illumination control circuit, and illumination control circuit comprises screen display lighting circuit and keyboard display lighting circuit.

The screen display lighting circuit is by resistance R ₁, photo resistance RG ₁, electrochemical capacitor C ₁, resistance R ₂The bidirectional analog K switch ₁And K ₂Form.Resistance R ₁With photo resistance RG ₁Series connection, resistance R ₁The other end take over dynamo-electric source anode, photo resistance RG ₁Ground connection.The bidirectional analog K switch ₁Pin connecting resistance R ₁With photo resistance RG ₁P on the line ₁Point, and through electrochemical capacitor C ₁Ground connection.The bidirectional analog K switch ₁3 pin connecting resistance R ₂, resistance R ₂Other end ground connection, the pin of bidirectional analog switch is taken over the anode in dynamo-electric source.The bidirectional analog K switch ₁Pin connect the bidirectional analog K switch ₂Pin, the bidirectional analog K switch ₂3 pin catchers machine screen display illumination control circuit in triode G ₁Base stage, and through R ₃Ground connection, K ₂2 pin through the resistance R of mobile phone illumination control circuit ₅Meet display lighting signal input part A.Keyboard display lighting circuit is by resistance R ₆, photo resistance RG ₂, electrochemical capacitor C ₂, the bidirectional analog K switch ₃And K ₄, resistance R ₇Form.Resistance R ₆With photo resistance RG ₂Series connection.R ₆Take over dynamo-electric source anode, RG ₂Ground connection.The bidirectional analog K switch ₃1 pin meet R ₆With RG ₂P on the line ₁Point and electrochemical capacitor C ₂, electrochemical capacitor C ₂Other end ground connection.The bidirectional analog K switch ₃3 pin connecting resistance R ₇, resistance R ₇Other end ground connection, the bidirectional analog K switch ₃2 pin take over dynamo-electric source anode.The bidirectional analog K switch ₄With R ₇P on the line ₂Point, the resistance R of its 2 pin on the mobile phone illumination control circuit ₉Meet display lighting signal input part A, the bidirectional analog K switch ₄3 pin catchers switch dish illumination control circuit in triode G ₂Base stage and through R ₈Ground connection.

Screen display lighting circuit operation principle: when light is brighter, photo resistance RG ₁Diminished by the rayed resistance, make the bidirectional analog K switch ₁Control end step-down level, K ₂Disconnect, the display lighting signal can't enter G ₁Base stage, G ₁End the light-emitting diode D in the mobile phone illumination control circuit ₁Do not work.Be that the screen display illuminating lamp does not work.When light is more weak, RG ₁Resistance increases, and makes K ₁Control end become high level, K ₂Closure, the display lighting signal is through resistance R ₅, K ₂Enter G ₁Base stage, G ₁Conducting, light-emitting diode D ₁Luminous, promptly the screen display illuminating lamp is bright.The operation principle and the screen display lighting circuit of keyboard display lighting circuit are basic identical, so no longer narration.Because the utility model can be closed screen illumination and keyboard illumination automatically when light is strong, therefore can save cellular phone power supplies, save the cellular phone power supplies charging times, prolong the useful life of cellular phone power supplies.

Fig. 1 is the mobile phone schematic diagram that the mobile phone energy-saving appliance is housed, and Fig. 2 is the illumination control circuit schematic diagram, and the utility model is described in further detail below in conjunction with accompanying drawing.

The mobile phone power-saving device comprises handset shell 1, circuit board 2 and illumination control circuit.Illumination control circuit comprises screen display illumination control circuit, screen display illumination driving circuit, keyboard display lighting control circuit, keyboard display lighting drive circuit.The screen display illumination control circuit is by resistance R ₁, photo resistance RG ₁, electrochemical capacitor C ₁, resistance R ₂, the bidirectional analog K switch ₁And K ₂The screen display illumination driving circuit is by resistance R ₃-R ₅, light-emitting diode D ₁, triode G ₁Form.Keyboard display lighting control circuit is by resistance R ₆, resistance R ₇, photo resistance RG ₂, electrochemical capacitor C ₂, the bidirectional analog K switch ₃And K ₄Form.Keyboard display lighting drive circuit is by resistance R ₈-R ₁₀Light-emitting diode D ₂With triode G ₂Form.Screen display illumination driving circuit and keyboard display lighting drive circuit are the known circuit of mobile phone control illumination.R ₁With RG ₁Series connection back, R ₁Connect power positive end, RG ₁Ground connection.K ₁1 pin meet R ₁With RG ₁P point on the line, and through C ₁Ground connection, K ₁2 pin connect power positive end, its 3 pin is through R ₂Ground connection, K ₂1 pin meet K ₁With R ₂P on the line ₁Point, its 2 pin is through R ₅Meet display lighting signal input part A, 3 pin are through R ₃Ground connection, and meet G ₁Base stage.G ₁Collector electrode through D ₁Connect power positive end, G ₁Emitter through R ₄Ground connection.R ₆With RG ₂After the series connection, R ₆Connect power positive end, RG ₂Ground connection.K ₃1 pin meet R ₆With RG ₂P on the line ₂Point, and through C ₂ Ground connection.K ₃2 pin connect power positive end, K ₃3 pin meet R ₇, R ₇Ground connection.K ₄1 pin meet K ₃With R ₇P on the line ₃Point, K ₄3 pin meet G ₂Base stage, and through R ₈Ground connection, K ₄2 pin through R ₉Meet display lighting signal input part A.G ₂Collector electrode through light-emitting diode D ₂Connect power positive end, G ₂Emitter through R ₁₀Ground connection.The electric elements of system circuit are arranged on the circuit board 2, and circuit board 2 is fixed in the handset shell 1.4 bidirectional analog K switch ₁-K ₄Be commercially available integrated circuit CD4066.

Claims (1)

1, mobile phone power-saving device, comprise handset shell (1), circuit board (2) and illumination control circuit, illumination control circuit comprises screen display illumination control circuit, screen display illumination driving circuit, keyboard display lighting control circuit, keyboard display lighting drive circuit; The screen display illumination driving circuit is by resistance R ₃-R ₅, light-emitting diode D ₁With triode G ₁, G ₁Base stage through R ₃Ground connection, G ₁Collector electrode through D ₁Connect power positive end, G ₁Emitter through R ₄Ground connection; Keyboard display lighting drive unit is by resistance R ₈-R ₁₀, light-emitting diode D ₂, triode G ₂Form G ₂Base stage through R ₈Ground connection, G ₂Collector electrode through D ₂Connect power positive end, G ₂Emitter through R ₁₀Ground connection is characterized in that described screen display illumination control circuit is by resistance R ₁, resistance R ₂, photo resistance RG ₁, electrochemical capacitor C ₁, the bidirectional analog K switch ₁And K ₂Form R ₁With RG ₁Series connection back, R ₁Connect power positive end, RG ₁Ground connection.K ₁1 pin meet R ₁With RG ₁P point on the line, and through C ₂Ground connection, K ₁2 pin connect power positive end, K ₁3 pin meet R ₂An end, R ₂Other end ground connection, K ₂1 pin meet K ₁With R ₂P on the line ₁Point, K ₂2 pin through R ₅Meet display lighting signal input part A, K ₂3 pin meet triode G ₁Base stage, and through R ₂Ground connection; Described keyboard display lighting control circuit is by resistance R ₆, resistance R ₇, photo resistance RG ₂, electrochemical capacitor C ₂, the bidirectional analog K switch ₃And K ₄Form R ₆With RG ₂After the series connection, R ₆Connect power positive end, RG ₂Ground connection, K ₃1 pin meet R ₆With RG ₂R on the line ₂Point, and through C ₂Ground connection, K ₄2 pin connect power positive end, K ₃3 pin meet K ₄1 pin, and through R ₇Ground connection, K ₄1 pin meet K ₃With R ₇P on the line ₃Point, K ₄2 pin through R ₉Meet display lighting signal input part A, K ₄3 pin meet G ₂Base stage, and through R ₈Ground connection.

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