CN2336521Y - Intelligent management telephone - Google Patents

Abstract

The utility model relates to an intelligent management telephone, which is composed of electrical apparatus elements and integrated circuit chips, has secretarial management function and is omitted with a regulated power supply. A speakerphone power amplification circuit, a dialing circuit, a signal processing circuit (CPU) and a voltage dividing circuit is then connected in parallel with a polarity protection circuit after jointly forming into a cascaded structure with a handle talking circuit; the formed cascaded structure circuit provides power supply for the signal processing circuit after divided by the connecting of components of a capacitor E5, a voltage regulator diode Z2, etc. for replacing externally connected regulated power supplies used by the existing congener telephones. The utility model has the advantages of reliable principle, components saving and low cost.

Description

Intelligent management type telephone set

The utility model relates to and is a kind ofly had the secretarial management function and can be saved the intelligent management type telephone set of voltage stabilizing power supply by what polar protective circuit, handle speaking circuit, hands-free power amplifier, dial-up circuit, signal processing circuit and bleeder circuit etc. were formed.

Along with the popularization and application of science and technology development and information technology, the consumption of telephone set is more and more, and the functional requirement of its phone is also more and more higher, intellectuality, and the telephone set of secretaryization formula will be more welcome.The phone that generally uses on the market is divided into two classes at present; one class is the plain edition phone; mainly contain ringing circuit, polar protective circuit, dial telephone, electric devices compositions such as handle conversation phone, hand-free circuit and switch; this ordinary telephone set function is less; directly provide power supply by the connection road network, and adopt the parallel operation mode in each circuit.Second class is the intelligent electric phone, and the function ratio of this phone is more complete, except the basic circuit with first kind phone, also has the signal processing circuit of intelligent management function, and this phone is finished telephoometry, billing function etc. simultaneously in conversation.Because such phone adopts signal processing circuit, require telephone set to be in power supply all the time and treat operating state, this used in the time of just need conversing fully except the power supply in adopting the communication electrical network, external direct current power supply or voltage stabilizing phone still adopted the parallel operation mode from circuit connecting mode in addition.Although this telephone set replaces common phone substantially,, must power all the time for signal processing circuit by external power supply and just can finish the function of intelligent management owing to still adopt parallel operation.So parallel operation mode and external power supply are the outstanding shortcomings of existing intelligent electric phone, and, external power supply cause communication not smooth owing to usually breaking down.48～60 volts of DC power supply that provide by the communication electrical network in the parallel operation mode, its internal resistance is bigger, load capacity is poor, when line current surpasses 20mA, handle speaking circuit supply power voltage is reduced to about 5V, and line current is big more, and voltage is low more, this just is difficult to guarantee provide effective power supply for CPU and other control circuits, and Here it is must connect the reason of outer power supply source.

Goal of the invention of the present utility model is to overcome the shortcoming that parallel operation mode that existing intelligent management type telephone set exists needs external power supply, seek to design the intelligent management type telephone set that a kind of energy substitutes existing phone function and saves outer power supply source, circuit adopts the series-fed mode in this phone, directly powers to signal processing circuit with the power supply of communication electrical network.

In order to realize the foregoing invention purpose, the utility model will be considered two problems, the one, and circuit will meet the networking standard of national regulation, and the 2nd, save stabilized voltage power supply, reduce line cost.Shared one integrated of handle speaking circuit of this phone and hand-free circuit, i.e. the forward voltage of the forward voltage of handfree circuit amplification and handle speaking circuit is amplified shared, adds power amplification circuit then and constitutes hand-free circuit.When electric current in the circuit is 20mA, handle speaking circuit both end voltage is fallen about about 5V, about the about 6V of voltage at signal processing circuit (CPU) and hands-free power amplifier two ends, solved the powerup issue of CPU, save external rectifying voltage regulator, complete machine only needs a dc-battery power supply can always work in the intelligent management state.Circuitry is combined by polar protective circuit, handle conversation phone, hands-free power amplifier, dial-up circuit, signal processing circuit (CPU) and bleeder circuit; wherein hands-free power amplifier, dial-up circuit, signal processing circuit and bleeder circuit common with handle speaking circuit formation cascaded structure after in parallel with polar protective circuit again; the formation of series circuit configuration has guaranteed that dial-up circuit and signal processing circuit (CPU) can obtain good supply power voltage; and realized saving the effect of a stabilized voltage power supply, bleeder circuit is by capacitor E ₅, E ₆, E ₇, zener diode Z ₂, Z ₃, diode D ₃, D ₄, D ₅, resistor R ₃₅Form.Capacitor E in bleeder circuit ₅With voltage-stabiliser tube Z ₂Parallel connection, diode D ₃With D ₄Connect with DC power supply E again after the differential concatenation,, satisfy it and be in all the time and treat operating state, realize management function, capacitor E to guarantee power supply E mainly to the signal processing circuit power supply ₆Be connected in parallel on the signal processing circuit, to guarantee CPU stable supply power voltage arranged, when making a phone call, CPU provides power supply by the communication netting twine, and CPU is in the dormancy armed state at ordinary times.Capacitor E ₇With voltage stabilizing didoe Z ₃Continuous again and diode D after the parallel connection ₅And resistance R ₃₅Series connection is by E ₇And Z ₃Ensure to dial-up circuit and supply with the galvanic current pressure, realize its operate as normal.

The utility model totally adopts the series-fed structure, realizes saving stabilized voltage power supply, has changed and has adopted the parallel-connection structure form traditionally, and it is reliable to have principle, saves components and parts, the advantage that reduces cost.

Fig. 1 is a theory structure schematic block diagram of the present utility model.

Fig. 2 is an embodiment electricity principle schematic of the present utility model.

Embodiment of the present utility model: polar protective circuit 1, handle speaking circuit 2, hands-free power amplifier 3 and dial-up circuit 4 all adopt conventional circuit to connect to form; and select corresponding circuit parameter value for use; wherein handle speaking circuit 2 is based on 1062 integrated circuit chips; dial-up circuit 4 is based on the W91314 integrated circuit chip, and hands-free power amplifier 3 is mainly by triode N ₁And N ₃, triode P ₁And P ₂Form N ₁, N ₃Be 9013 types, P ₁Be 9012 types, P ₂Be 8558 types, integrated 6 is 2411 types, can supply ringing circuit, loud speaker S ₂And hands-free power amplifier is shared.Control triode N ₂Be the ZN5551 type.Signal processing circuit (CPU) 5, display circuit 7, IC-card 8, data file 9, keyboard 10 and clock circuit 11 are all chosen conventional commercially available components and parts product and are got final product.Each component parameters is in the bleeder circuit: E ₅=E ₆Select the big capacity electrochemical capacitor of 1000 μ F, voltage-stabiliser tube Z ₂And Z ₃The voltage stabilizing value be 6.2V, capacitor E ₇Be 10 μ F, resistor R ₃₅Be 3K, diode D ₃Be 2AP type, D ₄And D ₅Be 4148 types, battery supply E is 6V.Its electroacoustic techniques index of complete machine that adopts above-mentioned parameter to form all meets the national standard requirement of GB6362-86 and GB9034-88.

Claims (2)

1, a kind of intelligent management type telephone set that has the secretarial management function and can save stabilized voltage power supply; combine by polar protective circuit, handle speaking circuit, hands-free power amplifier, dial-up circuit, signal processing circuit (CPU) and bleeder circuit, it is characterized in that hands-free power amplifier, dial-up circuit, signal processing circuit and bleeder circuit common with handle speaking circuit formation cascaded structure after in parallel with polar protective circuit again.

2, intelligent management type telephone set according to claim 1, bleeder circuit is by capacitor E ₅, E ₆, E ₇, voltage stabilizing didoe Z ₂, Z ₃, diode D ₃, D ₄, D ₅, resistor R ₃₅Form, it is characterized in that capacitor E ₅With voltage-stabiliser tube Z ₂Parallel connection, diode D ₃With D ₄Connect capacitor E after the differential concatenation again with electric current E ₇With voltage stabilizing didoe Z ₃Continuous again and diode D after the parallel connection ₅And resistance R ₃₅Series connection, capacitor E ₆Be connected in parallel on the signal processing circuit.

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