CN109194162A - Safe socket DC power supply with storage function - Google Patents
Safe socket DC power supply with storage function Download PDFInfo
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- CN109194162A CN109194162A CN201811120207.7A CN201811120207A CN109194162A CN 109194162 A CN109194162 A CN 109194162A CN 201811120207 A CN201811120207 A CN 201811120207A CN 109194162 A CN109194162 A CN 109194162A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1252—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
A kind of safe socket DC power supply with storage function provided by the invention, comprising: the firewire of transformation input circuit, positive input terminal and socket connects, and the zero curve of negative input end and socket connects, and output end is connect with the input terminal of rectification circuit ZL；Rectification circuit ZL, the AC signal for exporting transformation input circuit are converted into direct current signal and export；Control circuit is protected, input terminal is connect with the output end of rectification circuit ZL, and output end is connect with the input terminal of the first voltage regulator circuit, and the DC voltage for exporting in rectification circuit ZL disconnects the input circuit of the first voltage regulator circuit when excessively high；First voltage regulator circuit, for rectify simultaneously output end stable DC Vo to the direct current for exporting rectification circuit ZL；Second voltage regulator circuit, the direct current Vo for exporting the first voltage regulator circuit carry out steady pressure treatment and export target voltage；Stand-by power supply circuit for powering after socket powers off to direct-flow electricity utilization apparatus can provide the direct current surely put to electrical equipment.
Description
Technical field
The present invention relates to a kind of DC power supply more particularly to a kind of safe socket DC power supplies with storage function.
Background technique
In modern society, the electric appliance that socket is generally used as one kind uses for convenience, and existing socket is not only made
For exchange switching use, on the other hand, be additionally provided with DC power supply, using USB interface output by the way of power outward, for pair
The equipment such as mobile phone, tablet computer charge, and the DC power supply of existing socket has following defects that the direct current of existing socket
Source output voltage stability is low, it is even more important that since there are fluctuations for alternating current, is easy to cause when line voltage is excessively high slotting
The DC power supply of seat is burnt, or even jeopardizes charging equipment when charging；Moreover, existing socket DC power supply is powered off in alternating current
Afterwards, that is, the charging to direct-flow electricity utilization apparatus such as mobile phones is disconnected, so that inconvenient people use.
Therefore, in order to solve the above-mentioned technical problem, need to propose a kind of new socket DC power supply.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of safe socket DC power supply with storage function, it can
Turn formation bistable in direct current process in exchange and press through journey, the direct current that surely put can be provided to electrical equipment, also, when alternating current electricity
Good automatic protection mechanism is capable of forming when pressing through high, to form good guarantor to DC power supply itself and electrical equipment
Shield, moreover, still being able to be powered to direct-flow electricity utilization apparatus, to be convenient for people to use after alternating current power-off.
A kind of safe socket DC power supply with storage function provided by the invention, comprising: transformation input circuit, whole
Current circuit ZL, protection control circuit, the first voltage regulator circuit and the second voltage regulator circuit；
The firewire of transformation input circuit, positive input terminal and socket connects, and the zero curve of negative input end and socket connects, output
End is connect with the input terminal of rectification circuit ZL；
Rectification circuit ZL, the AC signal for exporting transformation input circuit are converted into direct current signal and export；
Control circuit is protected, input terminal is connect with the output end of rectification circuit ZL, output end and the first voltage regulator circuit
Input terminal connection, the DC voltage for exporting in rectification circuit ZL disconnects the input circuit of the first voltage regulator circuit when excessively high；
First voltage regulator circuit, for rectify the simultaneously stable direct current of output end to the direct current for exporting rectification circuit ZL
Electric Vo；
Second voltage regulator circuit, the direct current Vo for exporting the first voltage regulator circuit carry out steady pressure treatment and export target electricity
Pressure；
Stand-by power supply circuit, charging input end are connected to the output end of the first voltage regulator circuit, power supply output end connection
In the input terminal of the second voltage regulator circuit, the first control signal is connected to the first voltage regulator circuit, the connection of the second control signal
In protection control circuit；For powering after socket powers off to direct-flow electricity utilization apparatus；
The transformation input circuit includes that the transformation input circuit includes transformer T1, switch S1 and for preventing from becoming
The secondary side of the secondary circuit short-circuit of depressor T1 protects circuit；
One end of the primary coil of transformer T1 is connected by the firewire of switch S1 and socket, the primary coil of transformer T1
The other end and socket zero curve connect, the secondary coil of transformer T1 is connect with the input terminal of rectification circuit ZL, described secondary
The parallel connection of secondary windings of side protection circuit and transformer T1.
Further, first voltage regulator circuit include resistance R3, resistance R10, resistance R11, triode Q3, voltage-stabiliser tube DW2,
Diode D2 capacitor C3 and capacitor C4；
The collector of the triode Q3 is connect with one end of resistance R3, and the other end of resistance R3 is as the first voltage regulator circuit
Input terminal with protection control circuit output end connect, the emitter of triode Q3 is grounded by capacitor C4, triode Q3's
Points of common connection between emitter and capacitor C4 is connect with the anode of diode D2, and the cathode of diode D2 is as voltage regulator circuit
Output end export direct current Vo；
The collector of triode Q3 is connect with one end of resistance R10, and the other end of resistance R10 is grounded by capacitor C3, and three
The base stage of pole pipe Q3 is connect by capacitor R11 with the cathode of voltage-stabiliser tube DW2, the plus earth of voltage-stabiliser tube DW2, capacitor C3 and resistance
Points of common connection connection between points of common connection between R10 and resistance R11 and the cathode of voltage-stabiliser tube DW2.
Further, the protection control circuit include resistance R1, resistance R2, resistance R4, resistance R5, resistance R6, capacitor C1,
Capacitor C2, resistance R7, resistance R8, resistance R9, controllable accurate source of stable pressure U1, amplifier U2, triode Q1, metal-oxide-semiconductor Q2, variable resistance
RT and voltage-stabiliser tube DW1；
One end of resistance R1 is connect as the input terminal of protection control circuit with the positive output end of rectification circuit ZL, resistance R2
The other end connect with the source electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q2 after resistance R2 and resistance R6 series connection by being grounded, resistance R2
Points of common connection between resistance R6 is grounded by capacitor C1, the points of common connection between resistance R2 and resistance R6 and amplifier U2
Backward end connection；
The source electrode of metal-oxide-semiconductor Q2 after resistance R4 and variable resistance RT series connection by being grounded, between resistance R4 and variable resistance RT
Points of common connection connect with the control electrode of controllable accurate source of stable pressure U1, the plus earth of controllable accurate source of stable pressure U1, controllable essence
The cathode of close source of stable pressure U1 is connect with the in-phase end of amplifier U2, and controllable accurate source of stable pressure U1 cathode passes through resistance R5 and metal-oxide-semiconductor Q2
Source electrode connection；
The output end of amplifier U2 is connect with the base stage of triode Q1, and the in-phase end of amplifier U2 passes through resistance R7's and amplifier U2
The collector of output end connection, triode Q1 is connect by resistance R8 with the source electrode of metal-oxide-semiconductor Q2, and the emitter of triode Q1 passes through
Capacitor C2 ground connection, the emitter of triode Q1 are connect with the cathode of voltage-stabiliser tube DW1, the plus earth of voltage-stabiliser tube DW1, voltage-stabiliser tube
The cathode of DW1 is connect by resistance R9 with the grid of metal-oxide-semiconductor Q2, output end of the drain electrode of metal-oxide-semiconductor Q2 as protection control circuit；
Wherein, metal-oxide-semiconductor Q2 is p-type metal-oxide-semiconductor.
Further, the stand-by power supply circuit includes lithium battery E, diode D1, metal-oxide-semiconductor Q4, silicon-controlled Q5, battery management
Circuit U 3, resistance R11, resistance R12, resistance R13, voltage-stabiliser tube DW3 and capacitor C5；
Charging input end of the anode of the diode D1 as stand-by power supply circuit, the cathode of diode D1 are connected to electricity
Pond manages the input terminal of circuit U 3, and the electric discharge output end of the battery management circuit U3 is connect with the source electrode of metal-oxide-semiconductor Q4, cell tube
The charging output end for managing circuit is connect with the anode of lithium battery E, and the electric discharge input terminal and lithium battery E of battery management circuit U3 is just
Pole connection, the drain electrode of metal-oxide-semiconductor Q4 are connected to the input terminal of the second voltage regulator circuit, and the grid of metal-oxide-semiconductor Q4 passes through resistance R11 and pressure stabilizing
The cathode of pipe DW3 connects, and the cathode of the plus earth of voltage-stabiliser tube DW3, voltage-stabiliser tube DW3 is grounded by capacitor C5, voltage-stabiliser tube DW3's
Cathode is connect by resistance R13 with the cathode of silicon-controlled Q5, and the anode of silicon-controlled Q5 is as stand-by power supply circuit first input end
It is connected to the anode of diode D2, the control electrode of silicon-controlled Q5 is connect with one end of resistance R12, the other end conduct of resistance R12
Second control signal is connected to the points of common connection G1 between the resistance R2 and resistance R6 of protection control circuit；
Wherein, metal-oxide-semiconductor Q2 is p-type metal-oxide-semiconductor.
Further, the rectification circuit ZL is the whole bridge rectifier circuit of diode composition.
Further, the secondary side protection circuit includes that two-way stable state inhibits diode TVS, resistance R15, resistance R16, electricity
Hinder R17, resistance R18, capacitor C6, voltage-stabiliser tube DW4, light emitting diode LD1, buzzer SP and silicon-controlled Q6；
One end of the two-way Transient Suppression Diode TVS is connected to the secondary winding of transformer T1 with rectification circuit ZL's
The other end of points of common connection between positive input terminal, two-way Transient Suppression Diode TVS is gone here and there by resistance R15 and resistance R18
It is grounded after connection, the points of common connection between resistance R15 and resistance R18 is connect by resistance R16 with the control electrode of silicon-controlled Q6, electricity
Points of common connection between resistance R15 and resistance R18 is connect with one end of capacitor C6, and the other end of capacitor C6 is with voltage-stabiliser tube DW4's
Cathode connection, the plus earth of voltage-stabiliser tube DW4；The anode of silicon-controlled Q6 is connected to the secondary winding and rectification circuit of transformer T1
The cathode of points of common connection between the positive input terminal of ZL, silicon-controlled Q6 is connect with one end of resistance R17, and resistance R17's is another
End is grounded by buzzer SP, and the anode of the points of common connection between resistance R17 and buzzer SP and light emitting diode LD1 are even
It connects, the cathode ground connection of light emitting diode LD1.
Beneficial effects of the present invention: by means of the invention it is possible to turning formation bistable in direct current process in exchange presses through journey, it can
The direct current surely put is provided to electrical equipment, also, is capable of forming good automatic protection mechanism when line voltage is excessively high, from
And good protection is formed to DC power supply itself and electrical equipment, moreover, still being able to use to direct current after alternating current power-off
Electric equipment is powered, to be convenient for people to use, moreover, short circuit occurs in the secondary side that exchange is converted to the transformer of direct current
When failure, automatically into guard mode and it can alarm.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples:
Fig. 1 is the principle of the present invention structural schematic diagram.
Fig. 2 is circuit diagram of the invention.
Fig. 3 is stand-by power supply circuit schematic diagram of the invention.
Specific embodiment
Further description is made to the present invention below in conjunction with Figure of description, as shown in the figure:
A kind of safe socket DC power supply with storage function provided by the invention, comprising: transformation input circuit, whole
Current circuit ZL, protection control circuit, the first voltage regulator circuit and the second voltage regulator circuit；
The firewire of transformation input circuit, positive input terminal and socket connects, and the zero curve of negative input end and socket connects, output
End is connect with the input terminal of rectification circuit ZL；
Rectification circuit ZL, the AC signal for exporting transformation input circuit are converted into direct current signal and export；
Control circuit is protected, input terminal is connect with the output end of rectification circuit ZL, output end and the first voltage regulator circuit
Input terminal connection, the DC voltage for exporting in rectification circuit ZL disconnects the input circuit of the first voltage regulator circuit when excessively high；
First voltage regulator circuit, for rectify the simultaneously stable direct current of output end to the direct current for exporting rectification circuit ZL
Electric Vo；
Second voltage regulator circuit, the direct current Vo for exporting the first voltage regulator circuit carry out steady pressure treatment and export target electricity
Pressure；
Stand-by power supply circuit, charging input end are connected to the output end of the first voltage regulator circuit, power supply output end connection
In the input terminal of the second voltage regulator circuit, the first control signal is connected to the first voltage regulator circuit, the connection of the second control signal
In protection control circuit；For powering after socket powers off to direct-flow electricity utilization apparatus；
The transformation input circuit includes that the transformation input circuit includes transformer T1, switch S1 and for preventing from becoming
The secondary side of the secondary circuit short-circuit of depressor T1 protects circuit；
One end of the primary coil of transformer T1 is connected by the firewire of switch S1 and socket, the primary coil of transformer T1
The other end and socket zero curve connect, the secondary coil of transformer T1 is connect with the input terminal of rectification circuit ZL, described secondary
The parallel connection of secondary windings of circuit and transformer T1 is protected in side, by above structure, can turn to be formed in direct current process in exchange double
Pressure stabilizing process can provide the direct current that surely put to electrical equipment, also, be capable of forming when line voltage is excessively high it is good from
Dynamic protection mechanism, so that good protection is formed to DC power supply itself and electrical equipment, moreover, being converted to direct current in exchange
Transformer secondary side occur short trouble when, automatically into guard mode and can alarm.
In the present embodiment, first voltage regulator circuit includes resistance R3, resistance R10, resistance R11, triode Q3, voltage-stabiliser tube
DW2, diode D2 capacitor C3 and capacitor C4；
The collector of the triode Q3 is connect with one end of resistance R3, and the other end of resistance R3 is as the first voltage regulator circuit
Input terminal with protection control circuit output end connect, the emitter of triode Q3 is grounded by capacitor C4, triode Q3's
Points of common connection between emitter and capacitor C4 is connect with the anode of diode D2, and the cathode of diode D2 is as voltage regulator circuit
Output end export direct current Vo；
The collector of triode Q3 is connect with one end of resistance R10, and the other end of resistance R10 is grounded by capacitor C3, and three
The base stage of pole pipe Q3 is connect by capacitor R11 with the cathode of voltage-stabiliser tube DW2, the plus earth of voltage-stabiliser tube DW2, capacitor C3 and resistance
Points of common connection connection between points of common connection between R10 and resistance R11 and the cathode of voltage-stabiliser tube DW2.
In the present embodiment, the protection control circuit includes resistance R1, resistance R2, resistance R4, resistance R5, resistance R6, electricity
Hold C1, capacitor C2, resistance R7, resistance R8, resistance R9, controllable accurate source of stable pressure U1, amplifier U2, triode Q1, metal-oxide-semiconductor Q2, can
Power transformation hinders RT and voltage-stabiliser tube DW1；
One end of resistance R1 is connect as the input terminal of protection control circuit with the positive output end of rectification circuit ZL, resistance R2
The other end connect with the source electrode of metal-oxide-semiconductor Q2, the source electrode of metal-oxide-semiconductor Q2 after resistance R2 and resistance R6 series connection by being grounded, resistance R2
Points of common connection between resistance R6 is grounded by capacitor C1, the points of common connection between resistance R2 and resistance R6 and amplifier U2
Backward end connection；
The source electrode of metal-oxide-semiconductor Q2 after resistance R4 and variable resistance RT series connection by being grounded, between resistance R4 and variable resistance RT
Points of common connection connect with the control electrode of controllable accurate source of stable pressure U1, the plus earth of controllable accurate source of stable pressure U1, controllable essence
The cathode of close source of stable pressure U1 is connect with the in-phase end of amplifier U2, and controllable accurate source of stable pressure U1 cathode passes through resistance R5 and metal-oxide-semiconductor Q2
Source electrode connection；
The output end of amplifier U2 is connect with the base stage of triode Q1, and the in-phase end of amplifier U2 passes through resistance R7's and amplifier U2
The collector of output end connection, triode Q1 is connect by resistance R8 with the source electrode of metal-oxide-semiconductor Q2, and the emitter of triode Q1 passes through
Capacitor C2 ground connection, the emitter of triode Q1 are connect with the cathode of voltage-stabiliser tube DW1, the plus earth of voltage-stabiliser tube DW1, voltage-stabiliser tube
The cathode of DW1 is connect by resistance R9 with the grid of metal-oxide-semiconductor Q2, output end of the drain electrode of metal-oxide-semiconductor Q2 as protection control circuit；
Wherein, metal-oxide-semiconductor Q2 is p-type metal-oxide-semiconductor.
In the present embodiment, the stand-by power supply circuit includes lithium battery E, diode D1, metal-oxide-semiconductor Q4, silicon-controlled Q5, battery
Manage circuit U 3, resistance R11, resistance R12, resistance R13, voltage-stabiliser tube DW3 and capacitor C5；
Charging input end of the anode of the diode D1 as stand-by power supply circuit, the cathode of diode D1 are connected to electricity
Pond manages the input terminal of circuit U 3, and the electric discharge output end of the battery management circuit U3 is connect with the source electrode of metal-oxide-semiconductor Q4, cell tube
The charging output end for managing circuit is connect with the anode of lithium battery E, and the electric discharge input terminal and lithium battery E of battery management circuit U3 is just
Pole connection, the drain electrode of metal-oxide-semiconductor Q4 are connected to the input terminal of the second voltage regulator circuit, and the grid of metal-oxide-semiconductor Q4 passes through resistance R11 and pressure stabilizing
The cathode of pipe DW3 connects, and the cathode of the plus earth of voltage-stabiliser tube DW3, voltage-stabiliser tube DW3 is grounded by capacitor C5, voltage-stabiliser tube DW3's
Cathode is connect by resistance R13 with the cathode of silicon-controlled Q5, and the anode of silicon-controlled Q5 is as stand-by power supply circuit first input end
It is connected to the anode of diode D2, the control electrode of silicon-controlled Q5 is connect with one end of resistance R12, the other end conduct of resistance R12
Second control signal is connected to the points of common connection G1 between the resistance R2 and resistance R6 of protection control circuit；
Wherein, metal-oxide-semiconductor Q2 is p-type metal-oxide-semiconductor；Wherein, battery management circuit U3 uses existing lithium battery management circuit, can
Directly to be obtained in market purchasing, certain lithium battery producers when selling equipped with battery management circuit, for lithium battery into
Row management, prevents from overcharging or over-discharge.
In the present embodiment, the secondary side protection circuit includes that two-way stable state inhibits diode TVS, resistance R15, resistance
R16, resistance R17, resistance R18, capacitor C6, voltage-stabiliser tube DW4, light emitting diode LD1, buzzer SP and silicon-controlled Q6；
One end of the two-way Transient Suppression Diode TVS is connected to the secondary winding of transformer T1 with rectification circuit ZL's
The other end of points of common connection between positive input terminal, two-way Transient Suppression Diode TVS is gone here and there by resistance R15 and resistance R18
It is grounded after connection, the points of common connection between resistance R15 and resistance R18 is connect by resistance R16 with the control electrode of silicon-controlled Q6, electricity
Points of common connection between resistance R15 and resistance R18 is connect with one end of capacitor C6, and the other end of capacitor C6 is with voltage-stabiliser tube DW4's
Cathode connection, the plus earth of voltage-stabiliser tube DW4；The anode of silicon-controlled Q6 is connected to the secondary winding and rectification circuit of transformer T1
The cathode of points of common connection between the positive input terminal of ZL, silicon-controlled Q6 is connect with one end of resistance R17, and resistance R17's is another
End is grounded by buzzer SP, and the anode of the points of common connection between resistance R17 and buzzer SP and light emitting diode LD1 are even
It connects, the cathode ground connection of light emitting diode LD1.
The principle of the present invention is explained in detail further below:
After pressing lower switch S1, rectification circuit ZL exports direct current, at this point, the source voltage of metal-oxide-semiconductor Q2 is higher than base stage electricity
Pressure, metal-oxide-semiconductor Q2 conducting, the first voltage regulator circuit obtains electric, and due to the effect of the capacitor C3 of the first voltage regulator circuit, the first voltage regulator circuit is obtained
It charges after electricity to C3, triode Q3 is simultaneously not turned on；
At this point, amplifier U2 and resistance R7, which form reversed comparison circuit, resistance R2 and resistance R6, presses progress to input dc power
Sampling, and be input in reversed comparison circuit, resistance R4, resistance R5, adjustable resistance RT and controllable accurate source of stable pressure form base
Quasi- potential circuit is adjusted according to reference voltage of the adjustable resistance RT to the output of silicon-controlled close source of stable pressure U2, if fortune
The backward end voltage for putting U2 is higher than the reference voltage of in-phase end, and triode Q1 simultaneously is connected and to capacitor in amplifier U1 output high level
C2 charging, the grid voltage of metal-oxide-semiconductor Q2 gradually rises at this time, when metal-oxide-semiconductor source voltage and grid voltage difference be less than lead
When logical differential pressure threshold value, metal-oxide-semiconductor Q2 cut-off, to disconnect the power supply to the first regulated power supply；
If the reverse side voltage of amplifier U2 is lower than in-phase end voltage, amplifier U2 keeps low level, at this point, metal-oxide-semiconductor Q2
Differential pressure value between source electrode and grid is higher than differential pressure threshold value, and metal-oxide-semiconductor Q2 is held on；
When the voltage of capacitor C3 is higher than the conducting voltage of triode Q3, triode Q3 conducting exports stable DC
Vo is to the second regulated power supply；Wherein, the second regulated power supply uses existing regulated power supply, if necessary to export 5V direct current, then
Can be using existing chips such as LM2586, LM7805, if necessary to export 3.3V, then it can be existing using ASM1117-3.3V etc.
Voltage stabilizing chip is connect with peripheral direct-flow electricity utilization apparatus for convenience, then the output end of the second voltage regulator circuit connects USB interface.
When alternating current has power supply, points of common connection of the control electrode of silicon-controlled Q5 between resistance R2 and resistance R6 is obtained
Trigger current, so that silicon-controlled Q5 is connected, and capacitor C5 is electrically charged, although the voltage that there is metal-oxide-semiconductor Q4 lithium battery to provide at this time,
But the voltage difference between the source electrode of metal-oxide-semiconductor and grid cannot reach conducting differential pressure threshold value, and therefore, metal-oxide-semiconductor Q4 cut-off, lithium
Battery will not end to the offer work electricity consumption of the second voltage regulator circuit, after alternating current power-off, silicon-controlled Q5 anode power loss, although electric
Holding C5 has voltage, and still, capacitor C5 carries out micro discharge by the grid and drain electrode of resistance R11 and metal-oxide-semiconductor, so that capacitor C5
Voltage decline, so that the voltage difference between the source electrode and grid of metal-oxide-semiconductor reaches conducting differential pressure threshold value, metal-oxide-semiconductor Q4 is connected,
At this point, directly providing work electricity consumption to the second voltage regulator circuit from lithium battery.
The anti-short-circuit protection principle of the secondary side of transformer T1:
When short circuit occurs for the secondary winding of transformer T1, the coil of secondary winding can generate high pressure at this time, so that two-way
Transient Suppression Diode TVS conducting, electric current flows through resistance R15 and charges to capacitor C6 at this time, when the voltage of capacitor C6 reaches
When to setting value, silicon-controlled Q6 conducting, silicon-controlled Q6, resistance R17, buzzer SP and secondary winding forming circuit at this time, from
And protection is formed, and after silicon-controlled Q6 conducting, light emitting diode LD1 and buzzer SP work, and prompt user to break down,
It is powered off by disconnecting switch S1, wherein voltage-stabiliser tube DW4 is for clamping pressure.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (6)
1. a kind of safe socket DC power supply with storage function, it is characterised in that: include: transformation input circuit, rectification
Circuit ZL, protection control circuit, the first voltage regulator circuit and the second voltage regulator circuit；
The firewire of transformation input circuit, positive input terminal and socket connects, and the zero curve of negative input end and socket connects, output end with
The input terminal of rectification circuit ZL connects；
Rectification circuit ZL, the AC signal for exporting transformation input circuit are converted into direct current signal and export；
Control circuit is protected, input terminal is connect with the output end of rectification circuit ZL, and output end is defeated with the first voltage regulator circuit
Enter end connection, the DC voltage for exporting in rectification circuit ZL disconnects the input circuit of the first voltage regulator circuit when excessively high；
First voltage regulator circuit, for rectify simultaneously output end stable DC to the direct current for exporting rectification circuit ZL
Vo；
Second voltage regulator circuit, the direct current Vo for exporting the first voltage regulator circuit carry out steady pressure treatment and export target voltage；
Stand-by power supply circuit, charging input end are connected to the output end of the first voltage regulator circuit, and power supply output end is connected to the
The input terminal of two voltage regulator circuits, the first control signal are connected to the first voltage regulator circuit, and the second control signal is connected to guarantor
Protect control circuit；For powering after socket powers off to direct-flow electricity utilization apparatus；
The transformation input circuit includes that the transformation input circuit includes transformer T1, switch S1 and for preventing transformer
The secondary side of the secondary circuit short-circuit of T1 protects circuit；
One end of the primary coil of transformer T1 by the firewire connection of switch S1 and socket, the primary coil of transformer T1 it is another
The connection of the zero curve of one end and socket, the secondary coil of transformer T1 are connect with the input terminal of rectification circuit ZL, and the secondary side is protected
The parallel connection of secondary windings of protection circuit and transformer T1.
2. according to claim 1 with the safe socket DC power supply of storage function, it is characterised in that: described first is steady
Volt circuit includes resistance R3, resistance R10, resistance R11, triode Q3, voltage-stabiliser tube DW2, diode D2 capacitor C3 and capacitor C4；
The collector of the triode Q3 is connect with one end of resistance R3, and the other end of resistance R3 is as the defeated of the first voltage regulator circuit
Enter end and connect with the output end of control circuit is protected, the emitter of triode Q3 is grounded by capacitor C4, the transmitting of triode Q3
Points of common connection between pole and capacitor C4 is connect with the anode of diode D2, and the cathode of diode D2 is as the defeated of voltage regulator circuit
Outlet exports direct current Vo；
The collector of triode Q3 is connect with one end of resistance R10, and the other end of resistance R10 is grounded by capacitor C3, triode
The base stage of Q3 is connect by capacitor R11 with the cathode of voltage-stabiliser tube DW2, the plus earth of voltage-stabiliser tube DW2, capacitor C3 and resistance R10
Between points of common connection and resistance R11 and the cathode of voltage-stabiliser tube DW2 between points of common connection connection.
3. according to claim 2 with the safe socket DC power supply of storage function, it is characterised in that: the protection control
Circuit processed includes resistance R1, resistance R2, resistance R4, resistance R5, resistance R6, capacitor C1, capacitor C2, resistance R7, resistance R8, resistance
R9, controllable accurate source of stable pressure U1, amplifier U2, triode Q1, metal-oxide-semiconductor Q2, variable resistance RT and voltage-stabiliser tube DW1；
One end of resistance R1 is connect as the input terminal of protection control circuit with the positive output end of rectification circuit ZL, and resistance R2's is another
One end is connect with the source electrode of metal-oxide-semiconductor Q2, and the source electrode of metal-oxide-semiconductor Q2 after resistance R2 and resistance R6 series connection by being grounded, resistance R2 and electricity
Points of common connection between resistance R6 is grounded by capacitor C1, and the points of common connection between resistance R2 and resistance R6 is anti-with amplifier U2's
It is connected to end；
The source electrode of metal-oxide-semiconductor Q2 after resistance R4 and variable resistance RT series connection by being grounded, the public affairs between resistance R4 and variable resistance RT
Tie point is connect with the control electrode of controllable accurate source of stable pressure U1 altogether, the plus earth of controllable accurate source of stable pressure U1, and controllable accurate is steady
The cathode of potential source U1 is connect with the in-phase end of amplifier U2, and controllable accurate source of stable pressure U1 cathode passes through the source of resistance R5 and metal-oxide-semiconductor Q2
Pole connection；
The output end of amplifier U2 is connect with the base stage of triode Q1, and the in-phase end of amplifier U2 passes through the output of resistance R7 and amplifier U2
The collector of end connection, triode Q1 is connect by resistance R8 with the source electrode of metal-oxide-semiconductor Q2, and the emitter of triode Q1 passes through capacitor
C2 ground connection, the emitter of triode Q1 are connect with the cathode of voltage-stabiliser tube DW1, the plus earth of voltage-stabiliser tube DW1, voltage-stabiliser tube DW1's
Cathode is connect by resistance R9 with the grid of metal-oxide-semiconductor Q2, output end of the drain electrode of metal-oxide-semiconductor Q2 as protection control circuit；
Wherein, metal-oxide-semiconductor Q2 is p-type metal-oxide-semiconductor.
4. according to claim 3 with the safe socket DC power supply of storage function, it is characterised in that: the standby electricity
Source circuit includes lithium battery E, diode D1, metal-oxide-semiconductor Q4, silicon-controlled Q5, battery management circuit U3, resistance R11, resistance R12, electricity
Hinder R13, voltage-stabiliser tube DW3 and capacitor C5；
Charging input end of the anode of the diode D1 as stand-by power supply circuit, the cathode of diode D1 are connected to cell tube
The input terminal of circuit U 3 is managed, the electric discharge output end of the battery management circuit U3 is connect with the source electrode of metal-oxide-semiconductor Q4, battery management electricity
The charging output end on road is connect with the anode of lithium battery E, and the electric discharge input terminal of battery management circuit U3 and the anode of lithium battery E connect
It connects, the drain electrode of metal-oxide-semiconductor Q4 is connected to the input terminal of the second voltage regulator circuit, and the grid of metal-oxide-semiconductor Q4 passes through resistance R11 and voltage-stabiliser tube
The cathode of DW3 connects, and the cathode of the plus earth of voltage-stabiliser tube DW3, voltage-stabiliser tube DW3 is grounded by capacitor C5, and voltage-stabiliser tube DW3's is negative
Pole is connect by resistance R13 with the cathode of silicon-controlled Q5, and the anode of silicon-controlled Q5 connects as stand-by power supply circuit first input end
It is connected to the anode of diode D2, the control electrode of silicon-controlled Q5 is connect with one end of resistance R12, and the other end of resistance R12 is as
Two control signals are connected to the points of common connection G1 between the resistance R2 and resistance R6 of protection control circuit；
Wherein, metal-oxide-semiconductor Q2 is p-type metal-oxide-semiconductor.
5. according to claim 4 with the safe socket DC power supply of storage function, it is characterised in that: the rectified current
Road ZL is the whole bridge rectifier circuit of diode composition.
6. according to claim 5 with the safe socket DC power supply of storage function, it is characterised in that: the secondary side
Protection circuit includes that two-way stable state inhibits diode TVS, resistance R15, resistance R16, resistance R17, resistance R18, capacitor C6, pressure stabilizing
Pipe DW4, light emitting diode LD1, buzzer SP and silicon-controlled Q6；
One end of the two-way Transient Suppression Diode TVS is connected to the just defeated of the secondary winding of transformer T1 and rectification circuit ZL
Enter the points of common connection between end, after the other end of two-way Transient Suppression Diode TVS is by resistance R15 and resistance R18 series connection
Ground connection, the points of common connection between resistance R15 and resistance R18 are connect by resistance R16 with the control electrode of silicon-controlled Q6, resistance
Points of common connection between R15 and resistance R18 is connect with one end of capacitor C6, the other end of capacitor C6 and bearing for voltage-stabiliser tube DW4
Pole connection, the plus earth of voltage-stabiliser tube DW4；The anode of silicon-controlled Q6 is connected to the secondary winding and rectification circuit ZL of transformer T1
Positive input terminal between points of common connection, the cathode of silicon-controlled Q6 connect with one end of resistance R17, the other end of resistance R17
It being grounded by buzzer SP, the points of common connection between resistance R17 and buzzer SP is connect with the anode of light emitting diode LD1,
The cathode of light emitting diode LD1 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120207.7A CN109194162A (en) | 2018-09-20 | 2018-09-20 | Safe socket DC power supply with storage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120207.7A CN109194162A (en) | 2018-09-20 | 2018-09-20 | Safe socket DC power supply with storage function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109194162A true CN109194162A (en) | 2019-01-11 |
Family
ID=64910017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811120207.7A Withdrawn CN109194162A (en) | 2018-09-20 | 2018-09-20 | Safe socket DC power supply with storage function |
Country Status (1)
| Country | Link |
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| CN (1) | CN109194162A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110635543A (en) * | 2019-07-15 | 2019-12-31 | 重庆市渝北职业教育中心 | Charging control system based on single chip microcomputer |
| CN113452153A (en) * | 2021-07-28 | 2021-09-28 | 国家电网有限公司 | Online energy-taking and power-supplying system for ground wire of overhead transmission line |
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| CN107658650A (en) * | 2017-09-15 | 2018-02-02 | 安徽康力节能电器科技有限公司 | One kind economize on electricity receptacle |
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| TW201121177A (en) * | 2009-12-04 | 2011-06-16 | Univ Nan Kai Technology | Prolonged and electronic safety socket |
| CN202150715U (en) * | 2011-07-14 | 2012-02-22 | 陈臣 | Universal charger with power supply |
| CN104993332A (en) * | 2015-08-04 | 2015-10-21 | 温州骋航电器有限公司 | Miniature electric leakage protection socket |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110635543B (en) * | 2019-07-15 | 2021-06-01 | 重庆市渝北职业教育中心 | Charging control system based on single chip microcomputer |
| CN113452153A (en) * | 2021-07-28 | 2021-09-28 | 国家电网有限公司 | Online energy-taking and power-supplying system for ground wire of overhead transmission line |
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Application publication date: 20190111 |