CN108233722A - A kind of DC-DC DC voltage-stabilizings multiple power supplies output circuit - Google Patents
A kind of DC-DC DC voltage-stabilizings multiple power supplies output circuit Download PDFInfo
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- CN108233722A CN108233722A CN201810242837.5A CN201810242837A CN108233722A CN 108233722 A CN108233722 A CN 108233722A CN 201810242837 A CN201810242837 A CN 201810242837A CN 108233722 A CN108233722 A CN 108233722A
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- 239000003990 capacitor Substances 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 5
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- 239000003792 electrolyte Substances 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 17
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- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 abstract description 9
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- 238000001514 detection method Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
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- 230000033228 biological regulation Effects 0.000 description 1
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Classifications
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a kind of DC DC DC voltage-stabilizings multiple power supplies output circuit, including：DC DC circuits, RC oscillating circuits, sine wave rectangular waveform circuit and transformer-coupled circuit, RC oscillating circuits, positive square translation circuit and termination power are sequentially connected electrically, and RC oscillating circuits, positive square translation circuit and termination power are electrically connected respectively with DC DC circuits, filter capacitor and the DC DC integrated circuits for the direct current of spread of voltage to be converted to the direct current of voltage stabilization are equipped in DC DC circuits, the output terminal of DC DC integrated circuits is V1End；RC oscillating circuits are sine wave generation circuit, and equipped with the reinforced concrete structure for filtering and amplifier U3A, reinforced concrete structure is all electrically connected to V with U3A1End, the output terminal of U3A are electrically connected to positive square translation circuit；Multiple resistance are equipped in positive square translation circuit and amplifier U3B, U3B are electrically connected to V by a resistance1End；Multiwinding transformer is equipped in transformer-coupled circuit, the N number of secondary of transformer is respectively electrically connected to N number of modular circuit by N number of secondary circuit.
Description
Technical field
The present invention relates to power circuit design field more particularly to a kind of jamproof DC-DC DC voltage-stabilizings multichannels
Power output circuit.
Background technology
At present, the input terminal of most of DC-DC power source and output terminal altogether, thus cause the output terminal of power circuit to hold
It is vulnerable to the interference of input terminal, is not sufficiently stable output voltage, while can also interfere with other circuits.Common dc switch electricity
Source, due to circuit self character so that there are much noises for Switching Power Supply；And since power supply noise interference is big so that it is stablized
Property is poor.In addition, Switching Power Supply is generally used for powerful instrument, for low-power instrument and meter power supply conversion efficiency compared with
It is low.
Power supply if being easily disturbed, being not sufficiently stable, certainly will be influenced whole as most basic in circuit and be most important part
The performance of a circuit；There is an urgent need for a kind of power supplys for being capable of jamproof DC-DC DC voltage-stabilizings multiple-channel output for this field as a result,.
Invention content
The defects of in order to overcome the prior art, the technical problems to be solved by the invention are：How DC power supply more are made
Not interfered all the way by input terminal, and do not interfere with each other mutually between the arbitrary two-way of multiplex output circuit often in the output circuit of road,
To meet the needs of detection control quasi-instrument instrument field.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of DC-DC DC voltage-stabilizings multiple power supplies output circuit, including：DC-DC circuit, RC oscillating circuits, sine wave-square
Shape wave conversion circuit and transformer-coupled circuit, the RC oscillating circuits, sine wave-rectangular waveform circuit and transformer coupling
Close circuit be sequentially connected electrically, and the RC oscillating circuits, sine wave-rectangular waveform circuit and transformer-coupled circuit respectively with
The DC-DC circuit electrical connection, wherein,
Capacitance C1, C2, C3 and C4 are equipped in the DC-DC circuit and for the direct current of spread of voltage to be converted
The DC-DC integrated circuits of direct current for voltage stabilization, the input terminal of the DC-DC circuit are electrically connected to unstable direct current
Source, input terminal V+End and V-End, V-End ground connection；Bulky capacitor C1 and small capacitances C2 are all parallel to V+End and V-Between end, V+End electricity
The input terminal of the DC-DC integrated circuits is connected to, the output terminal of the DC-DC integrated circuits is V1End, bulky capacitor C3 and small
Capacitance C4 is all parallel to V1Between end and ground terminal；
The RC oscillating circuits are sine wave generation circuit, described equipped with the reinforced concrete structure for filtering and amplifier U3A
Reinforced concrete structure is all electrically connected to the V of the DC-DC circuit with amplifier U3A1End, the output terminal of the amplifier U3A are electrically connected to
The sine wave-rectangular waveform circuit；
Multiple resistance and amplifier U3B are equipped in the sine wave-rectangular waveform circuit, the amplifier U3B passes through
One resistance is electrically connected to the V of the DC-DC circuit1End；
It is equipped with multiwinding transformer in the transformer-coupled circuit, there are one primary side and for multiwinding transformer tool
First, two ... N secondary, wherein, the primary side of transformer is electrically connected with primary circuit, and the primary circuit is electrically connected to described put
The output terminal of big device U3B；First and secondth ... N secondary be electrically connected first and second ... N secondary circuits, and first,
2nd ... N secondary circuits be respectively electrically connected to first and second ... N-module circuit and for described first and second ... N-module electricity
Road provides electric power；Wherein, first and second ... N secondary circuits and primary circuit not altogether, and first and second ... N secondary circuits
Between any two also not altogether.
Based on the above technical solution, the present invention can also be improved as follows.
Preferably, in the RC oscillating circuits be equipped with resistance R3, R4, R5, R6, R7, R9, R11, R12, capacitance C7, C12,
C13, C18, C19, C24, C25 and amplifier U3A, wherein,
The first end of resistance R3 is electrically connected to the V of the DC-DC circuit1End, capacitance C7 is in parallel with C18, and C7, C18 are in parallel
Capacitance one end is grounded, and the other end is electrically connected to the second end of the resistance R3；The first end of resistance R4 is electrically connected to the DC-DC
The V of circuit1End, capacitance C13 is in parallel with C19, and C13, C19 shunt capacitance one end ground connection, the other end are electrically connected to the resistance R4
Second end；
The first end of resistance R7 is electrically connected to the second end of the resistance R3, and the first end of resistance R9 is electrically connected to the electricity
Hinder the second end of R7, the second end ground connection of R9；Capacitance C25 is in parallel with the resistance R9；
The power end of the amplifier U3A is electrically connected to the second end of the resistance R4, ground terminal ground connection；
What the first end of resistance R6 was electrically connected to resistance R7 and R9 is electrically connected place P points, and second end is electrically connected to amplifier U3A
Noninverting input；The first end of capacitance C24 is electrically connected to P points, and second end is electrically connected to the noninverting input of amplifier U3A；
The first end of capacitance C12 is electrically connected to the noninverting input of amplifier U3A, and second end is electrically connected to the first end of resistance R5, electricity
The second end of resistance R5 is electrically connected to the output terminal of amplifier U3A；
What the first end of resistance R11 was electrically connected to resistance R7 and R9 is electrically connected place P points, and second end is electrically connected to amplifier
The reverse input end of U3A；The first end of resistance R12 is electrically connected to the reverse input end of amplifier U3A, and second end, which is electrically connected to, puts
The output terminal of big device U3A；
The RC oscillating circuits are by V1The stable DC of output is converted into sine wave signal, from the defeated of amplifier U3A
Outlet is sent to the sine wave-rectangular waveform circuit.
Preferably, resistance R8, R10, R13, R14 and amplifier are equipped in the sine wave-rectangular waveform circuit
U3B, wherein,
The first end of resistance R8 is electrically connected to the output terminal of the amplifier U3A, and second end is electrically connected to the amplifier
The in-phase input end of U3B；
The first end of resistance R10 is electrically connected to the V of the DC-DC circuit1End, second end are electrically connected to the amplifier
The inverting input of U3B；The first end of resistance R13 is electrically connected to the inverting input of the amplifier U3B, second end electrical connection
To the first end of resistance R14；The resistance R14 is adjustable resistance, and second end is grounded；
The output terminal of the amplifier U3B is electrically connected to the primary circuit of the transformer-coupled circuit.
Preferably, field-effect tube Q1, TVS pipe, capacitance C5 and capacitance C6 are equipped in the primary circuit, wherein, the field
The grid of effect pipe Q1 is electrically connected to the output terminal of amplifier U3B in the sine wave-rectangular waveform circuit, and source electrode is grounded,
Drain electrode is electrically connected to the non-same polarity of transformer primary side, and the Same Name of Ends of transformer primary side is electrically connected to the V of the DC-DC circuit1
End；The TVS pipe is parallel to the primary side of the multiwinding transformer, and the capacitance C5 is in parallel with C6, shunt capacitance one end ground connection,
The other end is electrically connected to the V of the DC-DC circuit1End.
Preferably, described first and second ... in N secondary circuits, input terminal and the transformer pair of some secondary circuit
The Same Name of Ends electrical connection on side, the input terminal of another part secondary circuit are electrically connected with the non-same polarity of transformer secondary, wherein, it is defeated
Entering end, to be electrically connected to electrical equipment included in the secondary circuit of transformer secondary Same Name of Ends identical with electrical connection；Input
It is identical with electrical connection that end is electrically connected to electrical equipment included in the secondary circuit of transformer secondary non-same polarity；Input
End is electrically connected to the sum of power of secondary circuit of transformer secondary Same Name of Ends and input terminal, and to be electrically connected to transformer secondary non-same
The sum of the power of secondary circuit at name end is equal or close.But the parameter of electrical equipment included in the secondary circuit
It can identical, also can be different.
Preferably, to be equipped in the first secondary circuit of the first modular circuit power supply：Fast quick-recovery switching diode D1, electricity
Matter capacitance C8, C9, small capacitances C10, C11 and linear voltage-stabilizing circuit U4 are solved, wherein,
The linear voltage-stabilizing circuit U4 has input, output end and ground terminal, the ground of ground connection the first modular circuit of termination；
The anode of the fast quick-recovery switching diode D1 is electrically connected to the same of the first secondary of the multiwinding transformer
Name end, cathode are electrically connected to the input terminal of the linear voltage-stabilizing circuit U4；
The anode of the electrolyte capacitance C8 is electrically connected to the input terminal of the linear voltage-stabilizing circuit U4, and cathode connects the first mould
The ground of block circuit, small capacitances C11 are parallel between the input terminal of the linear voltage-stabilizing circuit U4 and the ground of the first modular circuit；
The anode of the electrolyte capacitance C9 is electrically connected to the output terminal of the linear voltage-stabilizing circuit U4, and cathode connects the first mould
The ground of block circuit, small capacitances C10 are parallel between the output terminal of the linear voltage-stabilizing circuit U4 and the ground of the first modular circuit；
First modular circuit is electrically connected to the output terminal of the linear voltage-stabilizing circuit U4, and connects common ground with U4.
Preferably, to be equipped in the second secondary circuit of the second modular circuit power supply：Fast quick-recovery switching diode D2, electricity
Matter capacitance C16, C17, small capacitances C14, C15 and linear voltage-stabilizing circuit U5 are solved, wherein,
The linear voltage-stabilizing circuit U5 has input, output end and ground terminal, the ground of ground connection the second modular circuit of termination；
The anode of the fast quick-recovery switching diode D2 is electrically connected to the non-of the second secondary of the multiwinding transformer
Same Name of Ends, cathode are electrically connected to the input terminal of the linear voltage-stabilizing circuit U5；
The anode of the electrolyte capacitance C16 is electrically connected to the input terminal of the linear voltage-stabilizing circuit U5, and cathode connects second
The ground of modular circuit, small capacitances C15 are parallel between the input terminal of the linear voltage-stabilizing circuit U5 and the ground of the second modular circuit；
The anode of the electrolyte capacitance C17 is electrically connected to the output terminal of the linear voltage-stabilizing circuit U5, and cathode connects second
The ground of modular circuit, small capacitances C14 are parallel between the output terminal of the linear voltage-stabilizing circuit U5 and the ground of the second modular circuit；
Second modular circuit is electrically connected to the output terminal of the linear voltage-stabilizing circuit U5, and connects common ground with U5.
Preferably, the amplifier U3A and U3B is all the TL072 of 8 pins.
Preferably, the field-effect tube Q1 is NCE0102.
Preferably, the TVS pipe is P6KE30AC.
Compared with prior art, what the present invention generated has the technical effect that：Make every in the multiplex output circuit of DC power supply
It is not interfered by input terminal, and is not interfere with each other mutually between the arbitrary two-way of multiplex output circuit all the way；Class instrument is detected for controlling
The power circuit design of instruments and meters, provides smart metastable voltage, with satisfaction control detection quasi-instrument instrument to accuracy and surely
Surely the requirement spent.
Description of the drawings
Fig. 1 is the structure diagram of the DC-DC circuit of the present invention；
Fig. 2 is the circuit connection diagram of DC-DC integrated circuits that output voltage is 3.3V；
Fig. 3 is the circuit connection diagram of DC-DC integrated circuits that output voltage is 8V；
Fig. 4 is the circuit connection diagram of DC-DC integrated circuits that output voltage is 12V；
Fig. 5 is the RC oscillating circuits being sequentially connected electrically, sine wave-rectangular waveform circuit and transformer-coupled circuit
Circuit connection diagram；
In the accompanying drawings, the list of designations represented by each label is as follows：
100 DC-DC circuits
101 DC-DC integrated circuits
200 RC oscillating circuits
300 sine waves-rectangular waveform circuit
400 transformer-coupled circuits
401 first modular circuits
402 second modular circuits
40N Nth module circuits
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
The DC-DC DC voltage-stabilizing multiple power supplies output circuits of the present invention include：DC-DC circuit 100, RC oscillating circuits 200,
Sine wave-rectangular waveform circuit 300 and transformer-coupled circuit 400, the RC oscillating circuits 200, sine wave-rectangular wave
Translation circuit 300 and transformer-coupled circuit 400 are sequentially connected electrically, and the RC oscillating circuits 200, sine wave-rectangular wave become
Circuit 300 and transformer-coupled circuit 400 is changed to be electrically connected with the DC-DC circuit 100 respectively.
It please refers to shown in Fig. 1, the structure diagram of the DC-DC circuit for the present invention, electricity is equipped in the DC-DC circuit
Hold C1, C2, C3 and C4 and DC-DC integrated circuits 101, wherein,
The input terminal of the DC-DC circuit is electrically connected to unstable DC power supply, input terminal V+End and V-End, V-End
Ground connection；Bulky capacitor C1 and small capacitances C2 are all parallel to V+End and V-Between end, C1 may be, for example, 470uF, and C2 may be, for example, 0.1uF；
V+End is electrically connected to the input terminal of the DC-DC integrated circuits 101, and the output terminal of the DC-DC integrated circuits 101 is V1End, greatly
Capacitance C3 and small capacitances C4 are all parallel to V1Between end and ground terminal, C3 may be, for example, 100uF, and C4 may be, for example, 0.1uF.As a result,
Unstable DC power supply is after bulky capacitor C1, small capacitances C2 filtering, and into DC-DC integrated circuits, output one is stable
Voltage, output voltage V after being filtered using bulky capacitor C3, small capacitances C41。
The DC-DC integrated circuits are used to be converted in the direct current of spread of voltage the direct current of voltage stabilization, such as Fig. 2
Three kinds of circuits shown in~4, wherein, Fig. 2 is shown as the circuit connection diagram for the DC-DC integrated circuits that output voltage is 3.3V, and Fig. 3 shows
The circuit connection diagram of DC-DC integrated circuits for being 8V for output voltage, Fig. 4 are shown as the DC-DC integrated circuits that output voltage is 12V
Circuit connection diagram；Need to illustrate is：DC-DC integrated circuits shown in Fig. 2~4 are only for example, and are had in the art
A variety of circuit structures can complete " direct current that the direct current of spread of voltage is converted to voltage stabilization " this function；Due to
DC-DC integrated circuits are common technology means of the prior art, and electrical equipment and connection relation has been explicitly shown in Fig. 2~4,
So it is no longer repeated with word herein more.
It is the RC oscillating circuits being sequentially connected electrically, sine wave-rectangular waveform electricity next, referring again to shown in Fig. 5
Road and the circuit connection diagram of transformer-coupled circuit；Wherein,
The RC oscillating circuits 200 are sine wave generation circuit, be equipped in circuit resistance R3, R4, R5, R6, R7, R9,
R11, R12, capacitance C7, C12, C13, C18, C19, C24, C25 and amplifier U3A, wherein,
The first end of resistance R3 is electrically connected to the V of the DC-DC circuit 1001End, V1End is as the RC oscillating circuits
Power supply；Capacitance C7 is in parallel with C18, and C7, C18 shunt capacitance one end ground connection, the other end are electrically connected to the second end of the resistance R3；
Resistance R3, capacitance C7, C18 are to power supply V as a result,1It is filtered, reduces interference of other circuits to RC oscillating circuits, while
Reduce RC oscillating circuits to V1Interference；Similarly, the first end of resistance R4 is electrically connected to the V of the DC-DC circuit 1001End,
Capacitance C13 is in parallel with C19, and C13, C19 shunt capacitance one end ground connection, the other end are electrically connected to the second end of the resistance R4；By
This, resistance R4, capacitance C13, C19 are to circuit V1It powers after being filtered to oscillating circuit, reduces other circuits and electricity is vibrated to RC
The interference on road, while also reduce RC oscillating circuits to V1Interference；
In RC oscillating circuits, if amplifier is powered using single supply, the sine wave freuqency highest of generation only has several kilo hertzs
Hereby, frequency is relatively low, and resulting DC power supply pulsation is larger, and output is unstable, it is impossible to meet observing and controlling in multiplex output circuit
The requirement of quasi-instrument instrument；But if instrument and meter directly with dual power supply, then can cause circuit excessively huge；So this
Although the RC oscillating circuits of invention are powered using single supply, current potential is raised, and filter through C25 as a result of R7, R9 partial pressure
The intermediate equilibria current potential as oscillation, such single supply play the effect of dual power supply, are equivalent to using dual power supply afterwards,
What is generated is mid-frequency sinusoidal wave, and through measuring, sine wave signal can be 100kHz, controlled by mid-frequency sinusoidal wave and generate electric current,
A stable voltage can be exported to meet the needs of control detection quasi-instrument instrument, well solved this problem.
Described resistance R3, R4 are all low resistance, may be, for example, 47 Ω.
Further, the first end of resistance R7 is electrically connected to the second end of the resistance R3, the first end electrical connection of resistance R9
To the second end of the resistance R7, the second end ground connection of R9；Capacitance C25 is in parallel with the resistance R9；The resistance value phase of resistance R7, R9
With and much larger than low resistance R3, the voltage V for being electrically connected place P points of resistance R7 and R9 as a result,PFor 0.5V1, and capacitance C25 in parallel
P point voltages V can be stablizedP；
Preferably, the amplifier U3A selects the TL072 of 8 pins, and power supply can up to ± 18V；The power supply of U3A
End is electrically connected to the second end of the resistance R4, ground terminal ground connection；
Further, what the first end of resistance R6 was electrically connected to resistance R7 and R9 is electrically connected place P point (i.e. the second of resistance R7
Hold, also the first end for resistance R9), second end is electrically connected to the noninverting input of amplifier U3A；Similarly, the of capacitance C24
One end is electrically connected to P points, and second end is electrically connected to the noninverting input of amplifier U3A；Further, the first end electricity of capacitance C12
The noninverting input of amplifier U3A is connected to, second end is electrically connected to the first end of resistance R5, the second end electrical connection of resistance R5
To the output terminal of amplifier U3A；Capacitance C24 connects to form frequency-selecting net with after resistance R6 parallel connections with resistance R5, capacitance C12 as a result,
Network changes the frequency for the sine wave signal that oscillating circuit generates by changing the parameter of capacitance C12, C24, resistance R5, R6；
Further, what the first end of resistance R11 was electrically connected to resistance R7 and R9 is electrically connected place P points, and second end is electrically connected to
The reverse input end of amplifier U3A；The first end of resistance R12 is electrically connected to the reverse input end of amplifier U3A, and second end is electrically connected
It is connected to the output terminal of amplifier U3A；Resistance R11 and R12 forms feedback circuit as a result, changes the parameter of R11 and R12 and can change
Become feedback factor, adjust the amplification factor of circuit；
The RC oscillating circuits 200 are by V as a result,1The stable DC of output amplifies after first passing through RC filtering to U3A again
Circuit is powered, and is converted into sine wave signal output, next sine wave-rectangular wave is sent to from the output terminal of amplifier U3A
Translation circuit 300.
Be equipped with please continue to refer to shown in Fig. 5, in the sine wave-rectangular waveform circuit 300 resistance R8, R10, R13,
R14 and amplifier U3B, wherein,
The first end of resistance R8 is electrically connected to the output terminal of the amplifier U3A, and second end is electrically connected to the amplifier
The in-phase input end of U3B, that is, the sine wave that the RC oscillating circuits 200 generate is linked into the same of amplifier U3B by resistance R8
Phase input terminal；
The first end of resistance R10 is electrically connected to the V of the DC-DC circuit 1001End, second end are electrically connected to the amplification
The inverting input of device U3B；The first end of resistance R13 is electrically connected to the inverting input of the amplifier U3B, and second end is electrically connected
It is connected to the first end of resistance R14；The resistance R14 is adjustable resistance, and second end is grounded；
Resistance R10, R13, R14 and amplifier U3B collectively constitute comparator as a result, and function is：In-phase input end is believed
It number makes comparisons with anti-phase input end signal, when homophase input end signal is more than anti-phase input end signal, U3B output high level is small
In then exporting low level, so as to which the sine wave for generating oscillating circuit becomes rectangular wave；
Preferably, the amplifier U3B selects the TL072 of 8 pins；
Optionally, the amplifier U3B can be same chip with U3A, can also be respectively independent.
Further, rectangular wave duty ratio can be changed by the resistance value of regulation resistance R14, so as to change each of transformer below
The output voltage of a secondary makes it meet the requirement of required output voltage just, will not cause the waste of electric energy.
Next, please continue to refer to shown in Fig. 5, multiwinding transformer T, institute are equipped in the transformer-coupled circuit 400
State multiwinding transformer T tool there are one primary side and first and second ... N secondary, wherein, the primary side of transformer T is electrically connected with primary side
Circuit, first and second ... N secondary is electrically connected with first and second ... N secondary circuits, and first and second ... N secondary circuits electricity
Be connected to first and second ... N-module circuit 401 ... 40N and for first and second ... N-module circuit provides electric power；Wherein,
Field-effect tube Q1 is equipped in the primary circuit, (Transient Voltage Suppressor claim wink to TVS pipe
Time variant voltage inhibits diode), capacitance C5 and capacitance C6, wherein,
The grid of the field-effect tube Q1 is electrically connected to amplifier U3B in the sine wave-rectangular waveform circuit 300
Output terminal, source electrode ground connection, drain electrode is electrically connected to the non-same polarity of transformer T primary sides, and the Same Name of Ends of transformer T primary sides is then electrically connected
It is connected to the V of the DC-DC circuit 1001End；Field-effect tube Q1 plays the role of a switch, and rectangular wave is input to field-effect tube,
Control field-effect tube is switched on and off；Preferably, the field-effect tube Q1 selects NCE0102；
The TVS pipe is parallel to the primary side of the multiwinding transformer T, for protecting the circuit components such as field-effect tube,
That is, when the both ends of TVS are by reversed transient overvoltage pulse, can the high impedance at both ends be become Low ESR at a terrific speed,
To absorb instantaneous large-current, and by voltage clamping in predetermined value, so that the component in effective protection circuit is against damages；It is excellent
Selection of land, the TVS pipe select P6KE30AC；
The capacitance C5 is in parallel with C6, and shunt capacitance one end ground connection, the other end is electrically connected to the DC-DC circuit 100
V1End；Capacitance C5, C6 in parallel is filtered circuit, reduces transformer T coils to power supply V1Influence, prevent from interfering with it
Its circuit.
Further, the voltage of the multiwinding transformer T primary sides be coupled to first and second ... N secondary forms N roads electricity
Source, for powering to different circuit modules；First and secondth ... in N secondary circuits, the input terminal of some secondary circuit with
The Same Name of Ends electrical connection of transformer secondary, the input terminal of another part secondary circuit and the non-same polarity of transformer secondary are electrically connected
It connects, structure is similar, is carried out below with reference to first and second secondary circuit for the first modular circuit and the power supply of the second modular circuit
Explanation：
It is equipped in the first secondary circuit for the power supply of the first modular circuit：Fast quick-recovery switching diode D1, electrolyte electricity
Hold C8, C9, small capacitances C10, C11 and linear voltage-stabilizing circuit U4, wherein,
The linear voltage-stabilizing circuit U4 is common circuit chip of the prior art, may be, for example, HT7550；It is described linear
Regulator circuit U4 has input, output end and ground terminal, ground connection termination G1Ground；
Need to illustrate is：First and secondth ... in N secondary circuits, the power supply (i.e. each secondary of transformer) connect is all
It is independent, the ground connect is also to differ, is respectively independent, that is, each modular circuit of transformer secondary is not common with primary circuit
Ground, each modular circuit of secondary is between any two also not altogether.
The anode of the fast quick-recovery switching diode D1 is electrically connected to the same of the first secondary of the multiwinding transformer T
Name end, cathode are electrically connected to the input terminal of the linear voltage-stabilizing circuit U4；
The anode of the electrolyte capacitance C8 is electrically connected to the input terminal of the linear voltage-stabilizing circuit U4, and cathode meets G1Ground,
That is, it is parallel to the input terminal and G of the linear voltage-stabilizing circuit U41Between ground；Small capacitances C11 is also parallel to the linear voltage stabilization electricity
The input terminal and G of road U41Between ground；Wherein, the electrolyte capacitance C8 can value be more than or equal to 10uF, small capacitances C11 can
Value is 0.1uF or so；
The anode of the electrolyte capacitance C9 is electrically connected to the output terminal of the linear voltage-stabilizing circuit U4, and cathode meets G1Ground,
That is, it is parallel to the output terminal and G of the linear voltage-stabilizing circuit U41Between ground；Small capacitances C10 is also parallel to the linear voltage stabilization electricity
The output terminal and G of road U41Between；Wherein, the electrolyte capacitance C9 can value to can use more than or equal to 10uF, small capacitances C10
It is worth for 0.1uF or so；
First modular circuit is electrically connected to the output terminal of the linear voltage-stabilizing circuit U4, and meets G1Ground.
Further, to be equipped in the second secondary circuit of the second modular circuit power supply：Fast quick-recovery switching diode D2, electricity
Matter capacitance C16, C17, small capacitances C14, C15 and linear voltage-stabilizing circuit U5 are solved, wherein,
The linear voltage-stabilizing circuit U5 is common circuit chip of the prior art, may be, for example, HT7550；It is described linear
Regulator circuit U5 has input, output end and ground terminal, ground connection termination G2Ground；
The anode of the fast quick-recovery switching diode D2 is electrically connected to the non-of the second secondary of the multiwinding transformer T
Same Name of Ends, cathode are electrically connected to the input terminal of the linear voltage-stabilizing circuit U5；
The anode of the electrolyte capacitance C16 is electrically connected to the input terminal of the linear voltage-stabilizing circuit U5, and cathode meets G2Ground,
That is, it is parallel to the input terminal and G of the linear voltage-stabilizing circuit U52Between ground；Small capacitances C15 is also parallel to the linear voltage stabilization electricity
The input terminal and G of road U52Between ground；Wherein, the electrolyte capacitance C16 can value be more than or equal to 10uF, small capacitances C15 can
Value is 0.1uF or so；
The anode of the electrolyte capacitance C17 is electrically connected to the output terminal of the linear voltage-stabilizing circuit U5, and cathode meets G2Ground,
That is, it is parallel to the output terminal and G of the linear voltage-stabilizing circuit U52Between ground；Small capacitances C14 is also parallel to the linear voltage stabilization electricity
The output terminal and G of road U52Between ground；Wherein, the electrolyte capacitance C17 can value be more than or equal to 10uF, small capacitances C14 can
Value is 0.1uF or so；
Second modular circuit is electrically connected to the output terminal of the linear voltage-stabilizing circuit U5, and meets G2Ground.
Thus ---
When the waveform for being input to field-effect tube is positive half cycle, field-effect tube Q1 conductings, electric current is by transformer primary at this time
The Same Name of Ends on side can specify that be forward current at this time through non-same polarity, again through Q1 to ground；Current coupling is to each pair of transformer
Side, the fast quick-recovery switching diode D1 conductings of the first secondary circuit, is formed into a loop and powers for the first modular circuit；Similarly,
In first~N secondary circuits, (secondary that i.e. input terminal is connect with Same Name of Ends is electric for the circuit identical with the first secondary circuit structure
Road) it also turns on, it powers for respective circuit；And the secondary circuit that the second secondary circuit and other input terminals are connect with non-same polarity
In fast quick-recovery switching diode then end, do not power；
When the waveform for being input to field-effect tube is negative half period, field-effect tube Q1 cut-offs, since electric current is fast in primary coil
Speed reduces, and generation induced electromotive force is stronger, the faradic direction of generation and the inductive current direction phase generated during positive half cycle
Instead；Fast quick-recovery switching diode D2 conductings in the second secondary circuit of transformer at this time, are formed into a loop as the second modular circuit
Power supply；Similarly, circuit (the i.e. input terminal and non-same polarity in second~N secondary circuits, identical with the second secondary circuit structure
The secondary circuit of connection) it also turns on, it powers for respective circuit；And the first secondary circuit and other input terminals are connect with Same Name of Ends
Secondary circuit in fast quick-recovery switching diode then end, do not power；
In practical applications, for power is made to be distributed stable equilibrium, it should be ensured that the power of positive half cycle output is differed with negative half period
Less.
Preferably, the fast quick-recovery switching diode selects 1N4148.
In conclusion the course of work of the present invention is as follows：
Unstable DC power supply exports the DC power supply of a voltage stabilization after DC-DC is converted, using oscillation
Direct current is changed into the higher sine wave signal of frequency by circuit, and then sine wave converts after sine wave-rectangular waveform circuit
For rectangular wave；Rectangular wave will input all the way through transformer-coupled circuit becomes multiple-channel output, and each in multiplex output circuit
Road is not interfered by input terminal, is not also interfere with each other mutually between the arbitrary two-way of multiplex output circuit；Further, since signal wave frequency rate
Higher, the direct current output of each secondary is more steady.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of DC-DC DC voltage-stabilizings multiple power supplies output circuit, which is characterized in that including：DC-DC circuit, RC oscillating circuits,
Sine wave-rectangular waveform circuit and transformer-coupled circuit, the RC oscillating circuits, sine wave-rectangular waveform circuit
And transformer-coupled circuit is sequentially connected electrically, and the RC oscillating circuits, sine wave-rectangular waveform circuit and transformer coupled
Circuit is electrically connected respectively with the DC-DC circuit, wherein,
Capacitance C1, C2, C3 and C4 are equipped in the DC-DC circuit and for the direct current of spread of voltage to be converted to electricity
The DC-DC integrated circuits of stable DC are pressed, the input terminal of the DC-DC circuit is electrically connected to unstable DC power supply,
Input terminal is V+End and V-End, V-End ground connection；Bulky capacitor C1 and small capacitances C2 are all parallel to V+End and V-Between end, V+End electrical connection
To the input terminal of the DC-DC integrated circuits, the output terminal of the DC-DC integrated circuits is V1End, bulky capacitor C3 and small capacitances
C4 is all parallel to V1Between end and ground terminal；
The RC oscillating circuits are sine wave generation circuit, equipped with the reinforced concrete structure for filtering and amplifier U3A, the RC knots
Structure is all electrically connected to the V of the DC-DC circuit with amplifier U3A1End, the output terminal of the amplifier U3A are electrically connected to described
Sine wave-rectangular waveform circuit；
Multiple resistance and amplifier U3B, the amplifier U3B are equipped in the sine wave-rectangular waveform circuit and passes through an electricity
Resistance is electrically connected to the V of the DC-DC circuit1End；
Be equipped with multiwinding transformer in the transformer-coupled circuit, multiwinding transformer tool there are one primary side and first,
2nd ... N secondary, wherein, the primary side of transformer is electrically connected with primary circuit, and the primary circuit is electrically connected to the amplifier
The output terminal of U3B；First and secondth ... N secondary be electrically connected first and second ... N secondary circuits, and first and second ...
N secondary circuits are respectively electrically connected to first and second ... N-module circuit and for described first and second ... N-module circuit provides electricity
Power；Wherein, first and second ... N secondary circuits and primary circuit not altogether, and first and second ... N secondary circuits are between any two
Also not altogether.
2. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 1, which is characterized in that the RC oscillations
Resistance R3, R4, R5, R6, R7, R9, R11, R12, capacitance C7, C12, C13, C18, C19, C24, C25 and amplification are equipped in circuit
Device U3A, wherein,
The first end of resistance R3 is electrically connected to the V of the DC-DC circuit1End, capacitance C7 is in parallel with C18, C7, C18 shunt capacitance one
End ground connection, the other end are electrically connected to the second end of the resistance R3；The first end of resistance R4 is electrically connected to the DC-DC circuit
V1End, capacitance C13 is in parallel with C19, and C13, C19 shunt capacitance one end ground connection, the other end are electrically connected to the second of the resistance R4
End；
The first end of resistance R7 is electrically connected to the second end of the resistance R3, and the first end of resistance R9 is electrically connected to the resistance R7
Second end, R9 second end ground connection；Capacitance C25 is in parallel with the resistance R9；
The power end of the amplifier U3A is electrically connected to the second end of the resistance R4, ground terminal ground connection；
What the first end of resistance R6 was electrically connected to resistance R7 and R9 is electrically connected place P points, and second end is electrically connected to the same of amplifier U3A
To input terminal；The first end of capacitance C24 is electrically connected to P points, and second end is electrically connected to the noninverting input of amplifier U3A；Capacitance
The first end of C12 is electrically connected to the noninverting input of amplifier U3A, and second end is electrically connected to the first end of resistance R5, resistance R5
Second end be electrically connected to the output terminal of amplifier U3A；
What the first end of resistance R11 was electrically connected to resistance R7 and R9 is electrically connected place P points, and second end is electrically connected to amplifier U3A's
Reverse input end；The first end of resistance R12 is electrically connected to the reverse input end of amplifier U3A, and second end is electrically connected to amplifier
The output terminal of U3A；
The RC oscillating circuits are by V1The stable DC of output is converted into sine wave signal, is sent out from the output terminal of amplifier U3A
It send to the sine wave-rectangular waveform circuit.
3. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 2, which is characterized in that the sine wave-
Resistance R8, R10, R13, R14 and amplifier U3B are equipped in rectangular waveform circuit, wherein,
The first end of resistance R8 is electrically connected to the output terminal of the amplifier U3A, and second end is electrically connected to the amplifier U3B's
In-phase input end；
The first end of resistance R10 is electrically connected to the V of the DC-DC circuit1End, second end are electrically connected to the anti-of the amplifier U3B
Phase input terminal；The first end of resistance R13 is electrically connected to the inverting input of the amplifier U3B, and second end is electrically connected to resistance
The first end of R14；The resistance R14 is adjustable resistance, and second end is grounded；
The output terminal of the amplifier U3B is electrically connected to the primary circuit of the transformer-coupled circuit.
4. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 3, which is characterized in that the primary side electricity
Field-effect tube Q1, TVS pipe, capacitance C5 and capacitance C6 are equipped in road, wherein, the grid of the field-effect tube Q1 is electrically connected to described
The output terminal of amplifier U3B in sine wave-rectangular waveform circuit, source electrode ground connection, drain electrode are electrically connected to the non-of transformer primary side
Same Name of Ends, the Same Name of Ends of transformer primary side are electrically connected to the V of the DC-DC circuit1End；The TVS pipe be parallel to it is described mostly around
The primary side of group transformer, the capacitance C5 is in parallel with C6, shunt capacitance one end ground connection, and the other end is electrically connected to the DC-DC electricity
The V on road1End.
5. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 3 or 4, which is characterized in that described
First, two ... in N secondary circuits, the input terminal of some secondary circuit is electrically connected with the Same Name of Ends of transformer secondary, another
The input terminal of part secondary circuit is electrically connected with the non-same polarity of transformer secondary, wherein,
Input terminal is electrically connected to electrical equipment included in the secondary circuit of transformer secondary Same Name of Ends and electrical connection phase
Together；
Input terminal is electrically connected to electrical equipment and electrical connection included in the secondary circuit of transformer secondary non-same polarity
It is identical；
Input terminal is electrically connected to the sum of power of secondary circuit of transformer secondary Same Name of Ends and is electrically connected to transformer with input terminal
The sum of the power of secondary circuit of secondary non-same polarity is equal or close.
6. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 5, which is characterized in that be the first module
It is equipped in first secondary circuit of circuit power supply：Fast quick-recovery switching diode D1, electrolyte capacitance C8, C9, small capacitances C10,
C11 and linear voltage-stabilizing circuit U4, wherein,
The linear voltage-stabilizing circuit U4 has input, output end and ground terminal, the ground of ground connection the first modular circuit of termination；
The anode of the fast quick-recovery switching diode D1 is electrically connected to the Same Name of Ends of the first secondary of the multiwinding transformer,
Cathode is electrically connected to the input terminal of the linear voltage-stabilizing circuit U4；
The anode of the electrolyte capacitance C8 is electrically connected to the input terminal of the linear voltage-stabilizing circuit U4, and cathode connects the first module electricity
The ground on road, small capacitances C11 are parallel between the input terminal of the linear voltage-stabilizing circuit U4 and the ground of the first modular circuit；
The anode of the electrolyte capacitance C9 is electrically connected to the output terminal of the linear voltage-stabilizing circuit U4, and cathode connects the first module electricity
The ground on road, small capacitances C10 are parallel between the output terminal of the linear voltage-stabilizing circuit U4 and the ground of the first modular circuit；
First modular circuit is electrically connected to the output terminal of the linear voltage-stabilizing circuit U4, and connects common ground with U4.
7. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 5, which is characterized in that be the second module
It is equipped in second secondary circuit of circuit power supply：Fast quick-recovery switching diode D2, electrolyte capacitance C16, C17, small capacitances
C14, C15 and linear voltage-stabilizing circuit U5, wherein,
The linear voltage-stabilizing circuit U5 has input, output end and ground terminal, the ground of ground connection the second modular circuit of termination；
The anode of the fast quick-recovery switching diode D2 is electrically connected to the non-of the same name of the second secondary of the multiwinding transformer
End, cathode are electrically connected to the input terminal of the linear voltage-stabilizing circuit U5；
The anode of the electrolyte capacitance C16 is electrically connected to the input terminal of the linear voltage-stabilizing circuit U5, and cathode connects the second module
The ground of circuit, small capacitances C15 are parallel between the input terminal of the linear voltage-stabilizing circuit U5 and the ground of the second modular circuit；
The anode of the electrolyte capacitance C17 is electrically connected to the output terminal of the linear voltage-stabilizing circuit U5, and cathode connects the second module
The ground of circuit, small capacitances C14 are parallel between the output terminal of the linear voltage-stabilizing circuit U5 and the ground of the second modular circuit；
Second modular circuit is electrically connected to the output terminal of the linear voltage-stabilizing circuit U5, and connects common ground with U5.
8. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 1, which is characterized in that the amplifier
U3A and U3B is all the TL072 of 8 pins.
9. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 1, which is characterized in that the field-effect
Pipe Q1 is NCE0102.
10. DC-DC DC voltage-stabilizings multiple power supplies output circuit according to claim 1, which is characterized in that the TVS pipe
For P6KE30AC.
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