CN207623823U

CN207623823U - A kind of DC-stabilized circuit

Info

Publication number: CN207623823U
Application number: CN201721854101.0U
Authority: CN
Inventors: 郑良田
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-27
Filing date: 2017-12-27
Publication date: 2018-07-17
Anticipated expiration: 2027-12-27

Abstract

The utility model discloses a kind of DC-stabilized circuits; including power module, reference voltage module, automatic Regulation module and under-voltage protective module; the power module is separately connected reference voltage module and automatic Regulation module; reference voltage module is also connected with automatic Regulation module, and automatic Regulation module is also connected with under-voltage protective module.The utility model DC-stabilized circuit circuit uses the dual power supply mode that alternating current and accumulator are combined, the loss that the stoppage in transit of device generates when such design can prevent from encountering alternating current power-off, pass through reference voltage setting, the combination of inductance, voltage comparator and triode, realize the purpose of Intelligent Dynamic voltage stabilizing output, circuit also has the function of the alarm that has a power failure simultaneously, therefore has the advantages that degree of intelligence is high, easy to use and vdiverse in function.

Description

A kind of DC-stabilized circuit

Technical field

The utility model is related to a kind of power circuit, specifically a kind of DC-stabilized circuit.

Background technology

With the continuous improvement of people's living standards, electronic equipment has become an essential part in life, especially It is that various intelligent communication devices bring great convenience to people’s lives, work, and this kind of electronic device has required one The constant voltage dc source that a precision is higher, performance is stablized, existing communication apparatus power supply has a single function mostly, circuit production more Complexity, there are certain shortcomings on voltage regulation performance.

Utility model content

The purpose of this utility model is to provide a kind of DC-stabilized circuits, to solve to propose in above-mentioned background technology The problem of.

To achieve the above object, the utility model provides the following technical solutions：

A kind of DC-stabilized circuit, including power module, reference voltage module, automatic Regulation module and under-voltage protection Module, the power module are separately connected reference voltage module and automatic Regulation module, and reference voltage module is also connected with automatic tune Die block, automatic Regulation module are also connected with under-voltage protective module.

Preferred embodiment as the utility model：The power module include resistance R7, voltage stabilizing chip IC2, rectifier bridge T and One end of filter capacitor C2, the resistance R7 connect capacitance C3 and 220V alternating current, the other end connection capacitance C3's of resistance R7 The port 1 of the other end and rectifier bridge T, the port 2 of rectifier bridge T connect the voltage input end IN and capacitance C2 of voltage stabilizing chip IC2, electricity Hold the anode of the other end connection diode D2 of C2, the end of the cathode of accumulator E, the ground terminal of voltage stabilizing chip IC2, rectifier bridge T Mouth 4 and negative pole of output end, the cathode of output end OUT connection diodes D2, the anode of accumulator E and the output of voltage stabilizing chip IC2 Rectify pole, the model LM7812 of chip IC 2.

Preferred embodiment as the utility model：The reference voltage module includes resistance R2 and three end adjustable reference source P, The output head anode of one end connection power module of the resistance R2, the other end of resistance R2 connect three end adjustable reference source P's Cathode, the negative pole of output end of the anode connection power module of three end adjustable reference source P.

Preferred embodiment as the utility model：The automatic Regulation module include chip IC 1, resistance R5, resistance R6 and Potentiometer RP1, the foot 1 of chip IC 1 connect the cathode of three end adjustable reference source P, and the foot 3 of chip IC 1 connects resistance R5 and resistance The other end of R6, resistance R6 connect potentiometer RP1, the negative pole of output end of the other end connection power module of potentiometer RP1, chip The foot 4 of IC1 connects resistance R3, and the emitter of the base stage of the other end connecting triode V2 of resistance R3, triode V2 connects resistance The output head anode of the other end connection power module of R1, resistance R1, the collector of triode V2 connect inductance L1, inductance L1's The other end connects the other end of resistance R5.

Preferred embodiment as the utility model：The under-voltage protective module includes triode V1, resistance R4, diode D1 With loudspeaker B, the anode and inductance L1 of one end connection diode D1 of resistance R4, the base of the other end connecting triode V1 of resistance R4 Pole, the cathode of the emitter connection diode D1 of triode V1, the collector connection loudspeaker of capacitance C1 and load A, triode V1 The negative pole of output end of the other end of the other end connection capacitance C1 of B, loudspeaker B, the other end and power module of load A.

Preferred embodiment as the utility model：The model TL431 of the three ends adjustable reference source P.

Preferred embodiment as the utility model：The model LM321 of the chip IC 1.

Compared with prior art, the utility model has the beneficial effects that：The utility model DC-stabilized circuit circuit The dual power supply mode being combined using alternating current and accumulator, device when such design can prevent from encountering alternating current power-off The loss generated of stopping transport realizes Intelligent Dynamic by reference voltage setting, the combination of inductance, voltage comparator and triode Voltage stabilizing output purpose, while circuit also have the function of have a power failure alarm, therefore have the function of degree of intelligence it is high, it is easy to use and Various advantage.

Description of the drawings

Fig. 1 is the circuit diagram of DC-stabilized circuit.

Fig. 2 is the circuit diagram of power module.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

Please refer to Fig.1-2, a kind of DC-stabilized circuit, including power module, reference voltage module, automatic Regulation mould Block and under-voltage protective module, the power module include resistance R7, voltage stabilizing chip IC2, rectifier bridge T and filter capacitor C2, described Reference voltage module includes resistance R2 and three end adjustable reference source P, and under-voltage protective module includes triode V1, resistance R4, two poles Pipe D1 and loudspeaker B, the automatic Regulation module include chip IC 1, resistance R5, resistance R6 and potentiometer RP1, the resistance R7's One end connects capacitance C3 and 220V alternating current, and the other end of resistance R7 connects the port 1 of the other end and rectifier bridge T of capacitance C3, The port 2 of rectifier bridge T connects the voltage input end IN and capacitance C2 of voltage stabilizing chip IC2, and the other end of capacitance C2 connects diode The anode of D2, the cathode of accumulator E, the ground terminal of voltage stabilizing chip IC2, the port 4 of rectifier bridge T and negative pole of output end, voltage stabilizing core The cathode of the output end OUT connection diodes D2 of piece IC2, the anode and output head anode of accumulator E, the model of chip IC 2 LM7812.The output head anode of one end connection power module of the resistance R2, the other end of resistance R2 connect three end adjustable substrates The cathode of quasi- source P, the negative pole of output end of the anode connection power module of three end adjustable reference source P.The connection of foot 1 three of chip IC 1 The cathode of adjustable reference source P, the foot 3 of chip IC 1 is held to connect resistance R5 and resistance R6, the other end of resistance R6 connects potentiometer The negative pole of output end of the other end connection power module of RP1, potentiometer RP1, the foot 4 of chip IC 1 connect resistance R3, resistance R3's The emitter of the base stage of other end connecting triode V2, triode V2 connects resistance R1, and the other end of resistance R1 connects power supply mould The collector of the output head anode of block, triode V2 connects inductance L1, the other end of the other end connection resistance R5 of inductance L1.Electricity Hinder the anode and inductance L1 of one end connection diode D1 of R4, the base stage of the other end connecting triode V1 of resistance R4, triode The cathode of the emitter connection diode D1 of V1, the collector connection loudspeaker B of capacitance C1 and load A, triode V1, loudspeaker B's The other end connects the negative pole of output end of the other end of capacitance C1, the other end and power module that load A.

The operation principle of the utility model is：The circuit given in Fig. 1 is powered by power module, and entire lighting lamp circuit passes through Ups power is powered, and ups power physical circuit is as shown in Figure 2 comprising the capacitance-resistance voltage reduction circuit of resistance R7 and capacitance C3 compositions, Bridge type rectification circuit T, voltage stabilizing chip IC2, filter capacitor C2, zener diode D2 and standby battery E, power circuit is by 220V Line voltage be converted into 12V DC electricity output, and also have the function of dual power supply.Resistance R1, three ends in circuit Adjustable reference source P forms reference voltage module, and reference voltage is provided to 1 foot of reverse input end of chip IC 2, under original state, The 3 foot voltage of in-phase input end of chip IC 1 is less than its 1 foot voltage of inverting input, therefore it exports low level, three pole of positive-negative-positive Pipe V1 conductings, when triode V1 is connected, force electric current to be flowed through from inductance L1, and the voltage for being added in the both ends load A increases, and then makes The 3 foot voltages for obtaining chip IC 1 rise, and when 3 feet of IC1 are higher than 1 foot voltage, IC1 outputs switch to high level, and V2 cut-offs export Voltage constantly declines, and when 1 foot of IC1 is less than 3 foot voltage, IC1 exports low level again, and V1 repeats to be connected, and output voltage rises again Height achievees the purpose that voltage stabilizing, adjusts the value of potentiometer RP1, you can changes voltage stabilizing value, achievees the purpose that voltage is adjusted, in circuit Diode D1, capacitance C1, triode V1 and loudspeaker B form under-voltage protective module, when VCC is normal, triode V1 passes through resistance R4 obtains electric, and V1 cut-offs, loudspeaker B do not work, and when encountering VCC and having a power failure, the base voltage of triode V1 disappears, and capacitance C1 passes through three poles The emitter of pipe V1 discharges, therefore V1 is connected, and loudspeaker B sends out alarm.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation Involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiment being appreciated that.

Claims

1. a kind of DC-stabilized circuit, including power module, reference voltage module, automatic Regulation module and under-voltage protection mould Block, which is characterized in that the power module is separately connected reference voltage module and automatic Regulation module, and reference voltage module also connects It is connected to dynamic voltage regulating module, automatic Regulation module is also connected with under-voltage protective module.

2. a kind of DC-stabilized circuit according to claim 1, which is characterized in that the power module includes resistance One end connection capacitance C3 and 220V alternating current of R7, voltage stabilizing chip IC2, rectifier bridge T and filter capacitor C2, the resistance R7, electricity The port 1 of the other end and rectifier bridge T of the other end connection capacitance C3 of R7 is hindered, the port 2 of rectifier bridge T connects voltage stabilizing chip IC2 Voltage input end IN and the anode of other end connection diode D2 of capacitance C2, capacitance C2, accumulator E cathode, voltage stabilizing core The ground terminal of piece IC2, the port 4 of rectifier bridge T and negative pole of output end, the output end OUT connection diodes D2's of voltage stabilizing chip IC2 The anode and output head anode of cathode, accumulator E, the model LM7812 of chip IC 2.

3. a kind of DC-stabilized circuit according to claim 1, which is characterized in that the reference voltage module includes One end of resistance R2 and three end adjustable reference source P, the resistance R2 connect the output head anode of power module, and resistance R2's is another The cathode of three end adjustable reference source P of end connection, the negative pole of output end of the anode connection power module of three end adjustable reference source P.

4. a kind of DC-stabilized circuit according to claim 1, which is characterized in that the automatic Regulation module includes Chip IC 1, resistance R5, resistance R6 and potentiometer RP1, the foot 1 of chip IC 1 connect the cathode of three end adjustable reference source P, chip The foot 3 of IC1 connects resistance R5 and resistance R6, and the other end of resistance R6 connects potentiometer RP1, the other end connection of potentiometer RP1 The negative pole of output end of power module, the connection resistance R3 of foot 4 of chip IC 1, the base stage of the other end connecting triode V2 of resistance R3, The emitter of triode V2 connects resistance R1, and the other end of resistance R1 connects the output head anode of power module, triode V2's Collector connects inductance L1, the other end of the other end connection resistance R5 of inductance L1.

5. a kind of DC-stabilized circuit according to claim 1, which is characterized in that the under-voltage protective module includes Triode V1, resistance R4, diode D1 and loudspeaker B, the anode and inductance L1 of one end connection diode D1 of resistance R4, resistance R4 Other end connecting triode V1 base stage, cathode, capacitance C1 and the load A of the emitter connection diode D1 of triode V1, The collector of triode V1 connects loudspeaker B, the other end of the other end connection capacitance C1 of loudspeaker B, the other end and power supply for loading A The negative pole of output end of module.

6. a kind of DC-stabilized circuit according to claim 3, which is characterized in that the three ends adjustable reference source P Model TL431.

7. a kind of DC-stabilized circuit according to claim 4, which is characterized in that the model of the chip IC 1 LM321。