CN104967321A - Multichannel output stabilized power supply of balanced modulation type based on phase sensitive detection circuit - Google Patents
Multichannel output stabilized power supply of balanced modulation type based on phase sensitive detection circuit Download PDFInfo
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- CN104967321A CN104967321A CN201510319523.7A CN201510319523A CN104967321A CN 104967321 A CN104967321 A CN 104967321A CN 201510319523 A CN201510319523 A CN 201510319523A CN 104967321 A CN104967321 A CN 104967321A
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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
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
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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
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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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
- H02M3/33561—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 having more than one ouput with independent control
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a multichannel output stabilized power supply of a balanced modulation type based on a phase sensitive detection circuit, and the power supply consists of a diode rectifier U1, a three-end voltage stabilizer W1, a three-end voltage stabilizer W2, a transformer T, a primary coil L1 disposed at a primary side of the transformer T, a secondary coil L2 disposed at a secondary side of the transformer T, a secondary coil L3 disposed at the secondary side of the transformer T, a secondary coil L4 disposed at the secondary side of the transformer T, a balanced modulation circuit connected between the diode rectifier U1 and the three-end voltage stabilizer W1 in a series manner, and a switching filtering circuit connected between the balanced modulation circuit and the primary coil L1 in a series manner. The power supply is simpler in overall circuit structure, also can effectively reduce the radio frequency interference of the circuits and the external radio frequency interference after a balance modulation circuit is combined, and enables the manufacture cost and maintenance cost to be greatly reduced. Meanwhile, the power supply can achieve the processing of a carrier signal through the phase sensitive detection circuit, thereby enabling the stability of the power supply to be higher.
Description
Technical field
The present invention relates to a kind of switching power supply, specifically refer to a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit.
Background technology
Along with continuous progress scientific and technological at present, electronic product also brings great convenience to people are in life while function from strength to strength.Voltage stabilizing circuit is just runed and gives birth to, and traditional series connection linear regulator type voltage stabilizing circuit has the features such as stability is high, output voltage is adjustable, ripple coefficient is little, circuit is simple.But the Correctional tube of these series connection linear regulator type voltage stabilizing circuits is always operating at magnifying state, and have electric current to flow through, therefore the power consumption of its pipe is comparatively large, the efficiency of circuit is not high, generally can only reach about 30% ~ 50% always.In order to overcome above-mentioned defect, people just have developed switching mode voltage stabilizing circuit.
In switching mode voltage stabilizing circuit, surge pipe is operated on off state, pipe alternation saturated with cut-off two states in.When pipe saturation conduction, though it is large to flow through pipe current, but tube voltage drop is very little; When pipe ends, tube voltage drop is large, but the electric current flow through is close to zero.Therefore, under power output the same terms, the efficiency of switching mode voltage stabilizer coin series regulator is high, generally can reach about 80% ~ 90%.But its coefficient of stability of the switching mode voltage stabilizer that current people adopt is not high, affect the normal work of electronic product to a great extent.
Summary of the invention
The object of the invention is to overcome the not high defect of its coefficient of stability of current switching mode voltage stabilizer, a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit is provided.
Object of the present invention is achieved through the following technical solutions: a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit, it is by diode rectifier U1, three terminal regulator W1, three terminal regulator W2, transformer T, be arranged on the primary coil L1 on the former limit of transformer T, be arranged on the secondary coil L2 of transformer T secondary, secondary coil L3 and secondary coil L4, be serially connected in the equilibrium modulation circuit between diode rectifier U1 and three terminal regulator W1, be serially connected in the switched filter circuit between equilibrium modulation circuit and primary coil L1, be serially connected in the power amplifier group between three terminal regulator W1 and three terminal regulator W2, the first output circuit be connected with secondary coil L2, the second output circuit be connected with secondary coil L3, the 3rd output circuit be connected with secondary coil L4, and the phase-sensitive detection circuit between the Same Name of Ends being arranged on switched filter circuit and primary coil L1 forms.
Further, described phase-sensitive detection circuit is by detection chip U3, negative pole is connected with+SIG the pin of detection chip U3, the polar capacitor C11 that positive pole is then connected with switched filter circuit, positive pole is connected with-SIG the pin of detection chip U3, the polar capacitor C12 of minus earth, one end is connected with-CAR the pin of detection chip U3, the resistance R7 of other end ground connection, N pole is ground connection after voltage stabilizing didoe D4, the voltage stabilizing didoe D5 that P pole is then connected with+CAR the pin of detection chip U3, one end is connected with the BIAS pin of detection chip U3, the resistance R8 of other end ground connection, one end is connected with-V the pin of detection chip U3, the resistance R9 of another termination 12V voltage, base stage is connected with+OUT the pin of detection chip U3 after diode D7, collector electrode is ground connection after diode D6 then, the triode Q1 that emitter is then connected with the ADJ pin of detection chip U3 after resistance R10, and one end is connected with the ADJ pin of detection chip U3, the potentiometer R11 that the other end is connected with the GMIN pin of detection chip U3 after resistance R12 forms, + CAR the pin of described detection chip U3 is connected with the positive pole of polar capacitor C11, and its-OUT pin is then connected with the emitter of triode Q1 and the Same Name of Ends of primary coil L1 respectively, and ADJ pin is then connected with the sliding end of potentiometer R11.
Described equilibrium modulation circuit is by field effect transistor MOS1, field effect transistor MOS2, field effect transistor MOS3, field effect transistor MOS4, the resistance R3 that one end is connected with the grid of field effect transistor MOS1, the other end is connected with the grid of field effect transistor MOS2 after resistance R4, and the resistance R5 that one end is connected with the grid of field effect transistor MOS3, the other end is connected with the grid of field effect transistor MOS4 after resistance R6 forms; The source electrode of described field effect transistor MOS1 is held with the S of three terminal regulator W1 and is connected, and its drain electrode is then connected with switched filter circuit; The source electrode of described field effect transistor MOS2 is connected with the cathode output end of diode rectifier U1, it drains and to be connected with the drain electrode of effect pipe MOS1; The source electrode of field effect transistor MOS3 is held with the R of three terminal regulator W1 and is connected, its grounded drain; The source electrode of field effect transistor MOS4 is connected with the cathode output end of diode rectifier U, its grounded drain; External+6V the voltage of tie point of described resistance R3 and resistance R4, the tie point also external+6V voltage of resistance R5 and resistance R6.
Described switched filter circuit is by triode Q, and electric capacity C1, resistance R1, resistance R2 and diode D1 form; The base stage of described triode Q forms loop with its collector electrode in turn after resistance R2, diode D1 and resistance R1, and electric capacity C1 and resistance R2 is in parallel; The collector electrode of triode Q is connected with the drain electrode of field effect transistor MOS2, its grounded emitter; Resistance R1 is then connected with the positive pole of polar capacitor C11 with the tie point of diode D1, and resistance R2 is then connected with power amplifier group with the tie point of diode D1.
Described power amplifier group is made up of power amplifier P1 and power amplifier P2; Power amplifier P1 is all connected with the tie point of diode D1 with resistance R2 with the in-phase end of power amplifier P2, and its end of oppisite phase is then all held with the Q of three terminal regulator W1 and is connected; The output of power amplifier P1 is held with the Q of three terminal regulator W2 and is connected, and the output of power amplifier P2 is then held with the R of three terminal regulator W2 and is connected; The Same Name of Ends of the primary coil L1 of described transformer T is connected with the tie point of diode D1 with resistance R1, its non-same polarity is then held with the S of three terminal regulator W2 and is connected.
Described first output circuit is made up of diode D2, electric capacity C2, electric capacity C3 and inductance L 5, and the P pole of described diode D2 is connected with the Same Name of Ends of secondary coil L2, its N pole is then connected with the non-same polarity of secondary coil L2 after electric capacity C2; One end of inductance L 5 is connected with the tie point of electric capacity C2 with diode D2, the other end is then connected with the non-same polarity of secondary coil L2 after electric capacity C3.
Described second output circuit is made up of diode rectifier U2, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, integrated regulator W7806 and integrated regulator W7809; Input and the secondary coil L3 of described diode rectifier U2 are in parallel, and the positive pole of electric capacity C4 is connected with the cathode output end of diode rectifier U2, its negative pole is then connected with the cathode output end of diode rectifier U2; The positive pole of electric capacity C5 is connected with the positive pole of electric capacity C4, its negative pole is connected with the positive pole of electric capacity C6, and the negative pole of electric capacity C6 is then connected with the negative pole of electric capacity C4; First output of integrated regulator W7806 is connected with the positive pole of electric capacity C5, the negative pole of its second output then electric capacity C5 is connected; First output of integrated regulator W7809 is connected with the positive pole of electric capacity C6, the negative pole of its second output then electric capacity C6 is connected, and electric capacity C7 is then serially connected between first output of integrated regulator W7809 and the 3rd output.
Described 3rd output circuit is made up of diode rectifier U3, electric capacity C8, electric capacity C9, electric capacity C10, diode D3 and integrated regulator W7809; Input and the secondary coil L4 of described diode rectifier U3 are in parallel, and the positive pole of electric capacity C8 is connected with the cathode output end of diode rectifier U3, its negative pole is then connected with the cathode output end of diode rectifier U3; Electric capacity C9 and electric capacity C8 is in parallel; First output of integrated regulator W7809 is connected with the positive pole of electric capacity C9, its second output is then connected with the negative pole of electric capacity C9; Electric capacity C10 is then serially connected between the 3rd output of integrated regulator W7809 and the second output; Diode D3 is then serially connected between first output of integrated regulator W7809 and the 3rd output.
Described detection chip U3 is LM1496 Double deference analog multiplier.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) integrated circuit structure of the present invention is not only comparatively simple, and after binding equilibrium modulation circuit, can also effectively reduce circuit self and external radio frequency interference, thus cost of manufacture and maintenance cost are had reduction by a relatively large margin.
(2) the present invention has three groups of voltage output ends, therefore can meet the normal demand value of people to voltage.
(3) stability of the present invention and sensitivity higher, can the ripple coefficient of reduction output voltage of high degree.
(4) the present invention is by the effect of phase-sensitive detection circuit, and it can process carrier signal of the present invention, makes stability of the present invention higher.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is phase-sensitive detection circuit structural representation of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention is by diode rectifier U1, three terminal regulator W1, three terminal regulator W2, transformer T, be arranged on the primary coil L1 on the former limit of transformer T, be arranged on the secondary coil L2 of transformer T secondary, secondary coil L3 and secondary coil L4, be serially connected in the equilibrium modulation circuit between diode rectifier U1 and three terminal regulator W1, be serially connected in the switched filter circuit between equilibrium modulation circuit and primary coil L1, be serially connected in the power amplifier group between three terminal regulator W1 and three terminal regulator W2, the first output circuit be connected with secondary coil L2, the second output circuit be connected with secondary coil L3, the 3rd output circuit be connected with secondary coil L4, and the phase-sensitive detection circuit between the Same Name of Ends being serially connected in switched filter circuit and primary coil L1 forms.This three terminal regulator W1 and three terminal regulator W2 all adopts prior art to realize.
Described equilibrium modulation circuit by field effect transistor MOS1, field effect transistor MOS2, field effect transistor MOS3, field effect transistor MOS4, and resistance R3, resistance R4, resistance R5 and resistance R6 form.During connection, one end of resistance R3 is connected with the grid of field effect transistor MOS1, the other end is connected with the grid of field effect transistor MOS2 after resistance R4, and one end of resistance R5 is connected with the grid of field effect transistor MOS3, the other end is connected with the grid of field effect transistor MOS4 after resistance R6.
Meanwhile, the source electrode of field effect transistor MOS1 is held with the S of three terminal regulator W1 and is connected, and its drain electrode is then connected with switched filter circuit; The source electrode of field effect transistor MOS2 is connected with the cathode output end of diode rectifier U1, it drains and to be connected with the drain electrode of effect pipe MOS1; The source electrode of field effect transistor MOS3 is held with the R of three terminal regulator W1 and is connected, its grounded drain; The source electrode of field effect transistor MOS4 is connected with the cathode output end of diode rectifier U, its grounded drain.Balance modulation function in order to ensure realizing normally, wherein the tie point of resistance R3 and resistance R4 needs external+6V voltage, and the tie point of resistance R5 and resistance R6 also needs external+6V voltage.
Described switched filter circuit is then by triode Q, and electric capacity C1, resistance R1, resistance R2 and diode D1 form.During connection, the base stage of triode Q forms loop with its collector electrode in turn after resistance R2, diode D1 and resistance R1, and electric capacity C1 and resistance R2 is in parallel; The collector electrode of triode Q is connected with the drain electrode of field effect transistor MOS2, its grounded emitter.That is, the collector electrode of triode Q is connected with the drain electrode of field effect transistor MOS2 with field effect transistor MOS1 simultaneously.Meanwhile, resistance R1 is then connected with phase-sensitive detection circuit with the tie point of diode D1, and resistance R2 is then connected with power amplifier group with the tie point of diode D1.
Power amplifier group is made up of power amplifier P1 and power amplifier P2.As shown in Figure 1, this power amplifier P1 is all connected with the tie point of diode D1 with resistance R2 with the in-phase end of power amplifier P2, and its end of oppisite phase is then all held with the Q of three terminal regulator W1 and is connected.Meanwhile, the output of power amplifier P1 is held with the Q of three terminal regulator W2 and is connected, and the output of power amplifier P2 is then held with the R of three terminal regulator W2 and is connected; The Same Name of Ends of the primary coil L1 of described transformer T is connected with the tie point of diode D1 with resistance R1, its non-same polarity is then held with the S of three terminal regulator W2 and is connected.
Described first output circuit is for exporting the voltage of+12V, and it is made up of diode D2, electric capacity C2, electric capacity C3 and inductance L 5.During connection, the P pole of diode D2 is connected with the Same Name of Ends of secondary coil L2, its N pole is then connected with the non-same polarity of secondary coil L2 after electric capacity C2; One end of inductance L 5 is connected with the tie point of electric capacity C2 with diode D2, the other end is then connected with the non-same polarity of secondary coil L2 after electric capacity C3, and the two ends of electric capacity C3 are then output.
Described second output circuit is made up of diode rectifier U2, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, integrated regulator W7806 and integrated regulator W7809.Wherein, integrated regulator W7806 and integrated regulator W7809 all has three ends and fixes output characteristic.The present invention makes full use of the characteristic of its output characteristic and diode forward pressure drop, makes the second output circuit can export-6V and+6V voltage.
During connection, input and the secondary coil L3 of diode rectifier U2 are in parallel, and the positive pole of electric capacity C4 is connected with the cathode output end of diode rectifier U2, its negative pole is then connected with the cathode output end of diode rectifier U2; The positive pole of electric capacity C5 is connected with the positive pole of electric capacity C4, its negative pole is connected with the positive pole of electric capacity C6, and the negative pole of electric capacity C6 is then connected with the negative pole of electric capacity C4; First output of integrated regulator W7806 is connected with the positive pole of electric capacity C5, the negative pole of its second output then electric capacity C5 is connected; First output of integrated regulator W7809 is connected with the positive pole of electric capacity C6, the negative pole of its second output then electric capacity C6 is connected, and electric capacity C7 is then serially connected between first output of integrated regulator W7809 and the 3rd output.
In like manner, the 3rd output circuit also adopts similar principle, utilizes the forward voltage drop of the output characteristic of integrated regulator W7809 and diode to realize the output of+9V voltage.3rd output circuit is made up of diode rectifier U3, electric capacity C8, electric capacity C9, electric capacity C10, diode D3 and integrated regulator W7809; Input and the secondary coil L4 of described diode rectifier U3 are in parallel, and the positive pole of electric capacity C8 is connected with the cathode output end of diode rectifier U3, its negative pole is then connected with the cathode output end of diode rectifier U3; Electric capacity C9 and electric capacity C8 is in parallel; First output of integrated regulator W7809 is connected with the positive pole of electric capacity C9, its second output is then connected with the negative pole of electric capacity C9; Electric capacity C10 is then serially connected between the 3rd output of integrated regulator W7809 and the second output; Diode D3 is then serially connected between first output of integrated regulator W7809 and the 3rd output.
Described phase-sensitive detection circuit structure as shown in Figure 2, it is by detection chip U3, negative pole is connected with+SIG the pin of detection chip U3, the polar capacitor C11 that positive pole is then connected with the tie point of diode D1 with resistance R1, positive pole is connected with-SIG the pin of detection chip U3, the polar capacitor C12 of minus earth, one end is connected with-CAR the pin of detection chip U3, the resistance R7 of other end ground connection, N pole is ground connection after voltage stabilizing didoe D4, the voltage stabilizing didoe D5 that P pole is then connected with+CAR the pin of detection chip U3, one end is connected with the BIAS pin of detection chip U3, the resistance R8 of other end ground connection, one end is connected with-V the pin of detection chip U3, the resistance R9 of another termination 12V voltage, base stage is connected with+OUT the pin of detection chip U3 after diode D7, collector electrode is ground connection after diode D6 then, the triode Q1 that emitter is then connected with the ADJ pin of detection chip U3 after resistance R10, and one end is connected with the ADJ pin of detection chip U3, the potentiometer R11 that the other end is connected with the GMIN pin of detection chip U3 after resistance R12 forms.
During connection ,+CAR the pin of this detection chip U3 is connected with the positive pole of polar capacitor C11, and its-OUT pin is then connected with the emitter of triode Q1 and the Same Name of Ends of primary coil L1 respectively, and ADJ pin is then connected with the sliding end of potentiometer R11.
In order to reach better implementation result, this detection chip U3 is preferably LM1496 Double deference analog multiplier and realizes, and its maximum working voltage is 30V, and power consumption is 500mw, and working temperature is 0 ~ 70 DEG C.
+ SIG the pin of this detection chip U3 has direct current (DC) bias to input, and this polar capacitor C11 then can stopping direct current be coupled, and avoids affecting the present invention and normally works.This voltage stabilizing didoe D4 and voltage stabilizing didoe D5 can limit the level of carrier signal in circuit, avoids voltage fluctuation to impact the present invention.Resistance R12 and potentiometer R11 then can adjust gain of the present invention, thus makes stability of the present invention higher.
As mentioned above, just the present invention can well be realized.
Claims (8)
1. the balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit, it is by diode rectifier U1, three terminal regulator W1, three terminal regulator W2, transformer T, be arranged on the primary coil L1 on the former limit of transformer T, be arranged on the secondary coil L2 of transformer T secondary, secondary coil L3 and secondary coil L4, be serially connected in the equilibrium modulation circuit between diode rectifier U1 and three terminal regulator W1, be serially connected in the switched filter circuit between equilibrium modulation circuit and primary coil L1, be serially connected in the power amplifier group between three terminal regulator W1 and three terminal regulator W2, the first output circuit be connected with secondary coil L2, the second output circuit be connected with secondary coil L3, and the 3rd output circuit to be connected with secondary coil L4 forms, it is characterized in that, between switched filter circuit and the Same Name of Ends of primary coil L1, be also provided with phase-sensitive detection circuit, described phase-sensitive detection circuit is by detection chip U3, negative pole is connected with+SIG the pin of detection chip U3, the polar capacitor C11 that positive pole is then connected with switched filter circuit, positive pole is connected with-SIG the pin of detection chip U3, the polar capacitor C12 of minus earth, one end is connected with-CAR the pin of detection chip U3, the resistance R7 of other end ground connection, N pole is ground connection after voltage stabilizing didoe D4, the voltage stabilizing didoe D5 that P pole is then connected with+CAR the pin of detection chip U3, one end is connected with the BIAS pin of detection chip U3, the resistance R8 of other end ground connection, one end is connected with-V the pin of detection chip U3, the resistance R9 of another termination 12V voltage, base stage is connected with+OUT the pin of detection chip U3 after diode D7, collector electrode is ground connection after diode D6 then, the triode Q1 that emitter is then connected with the ADJ pin of detection chip U3 after resistance R10, and one end is connected with the ADJ pin of detection chip U3, the potentiometer R11 that the other end is connected with the GMIN pin of detection chip U3 after resistance R12 forms, + CAR the pin of described detection chip U3 is connected with the positive pole of polar capacitor C11, and its-OUT pin is then connected with the emitter of triode Q1 and the Same Name of Ends of primary coil L1 respectively, and ADJ pin is then connected with the sliding end of potentiometer R11.
2. a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit according to claim 1, it is characterized in that, described equilibrium modulation circuit is by field effect transistor MOS1, field effect transistor MOS2, field effect transistor MOS3, field effect transistor MOS4, the resistance R3 that one end is connected with the grid of field effect transistor MOS1, the other end is connected with the grid of field effect transistor MOS2 after resistance R4, and the resistance R5 that one end is connected with the grid of field effect transistor MOS3, the other end is connected with the grid of field effect transistor MOS4 after resistance R6 forms; The source electrode of described field effect transistor MOS1 is held with the S of three terminal regulator W1 and is connected, and its drain electrode is then connected with switched filter circuit; The source electrode of described field effect transistor MOS2 is connected with the cathode output end of diode rectifier U1, it drains and to be connected with the drain electrode of effect pipe MOS1; The source electrode of field effect transistor MOS3 is held with the R of three terminal regulator W1 and is connected, its grounded drain; The source electrode of field effect transistor MOS4 is connected with the cathode output end of diode rectifier U, its grounded drain; External+6V the voltage of tie point of described resistance R3 and resistance R4, the tie point also external+6V voltage of resistance R5 and resistance R6.
3. a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit according to claim 2, it is characterized in that, described switched filter circuit is by triode Q, and electric capacity C1, resistance R1, resistance R2 and diode D1 form; The base stage of described triode Q forms loop with its collector electrode in turn after resistance R2, diode D1 and resistance R1, and electric capacity C1 and resistance R2 is in parallel; The collector electrode of triode Q is connected with the drain electrode of field effect transistor MOS2, its grounded emitter; Resistance R1 is then connected with the positive pole of polar capacitor C11 with the tie point of diode D1, and resistance R2 is then connected with power amplifier group with the tie point of diode D1.
4. a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit according to claim 3, it is characterized in that, described power amplifier group is made up of power amplifier P1 and power amplifier P2; Power amplifier P1 is all connected with the tie point of diode D1 with resistance R2 with the in-phase end of power amplifier P2, and its end of oppisite phase is then all held with the Q of three terminal regulator W1 and is connected; The output of power amplifier P1 is held with the Q of three terminal regulator W2 and is connected, and the output of power amplifier P2 is then held with the R of three terminal regulator W2 and is connected; The Same Name of Ends of the primary coil L1 of described transformer T is connected with the tie point of diode D1 with resistance R1, its non-same polarity is then held with the S of three terminal regulator W2 and is connected.
5. a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit according to claim 4, it is characterized in that, described first output circuit is made up of diode D2, electric capacity C2, electric capacity C3 and inductance L 5, and the P pole of described diode D2 is connected with the Same Name of Ends of secondary coil L2, its N pole is then connected with the non-same polarity of secondary coil L2 after electric capacity C2; One end of inductance L 5 is connected with the tie point of electric capacity C2 with diode D2, the other end is then connected with the non-same polarity of secondary coil L2 after electric capacity C3.
6. a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit according to claim 5, it is characterized in that, described second output circuit is made up of diode rectifier U2, electric capacity C4, electric capacity C5, electric capacity C6, electric capacity C7, integrated regulator W7806 and integrated regulator W7809; Input and the secondary coil L3 of described diode rectifier U2 are in parallel, and the positive pole of electric capacity C4 is connected with the cathode output end of diode rectifier U2, its negative pole is then connected with the cathode output end of diode rectifier U2; The positive pole of electric capacity C5 is connected with the positive pole of electric capacity C4, its negative pole is connected with the positive pole of electric capacity C6, and the negative pole of electric capacity C6 is then connected with the negative pole of electric capacity C4; First output of integrated regulator W7806 is connected with the positive pole of electric capacity C5, the negative pole of its second output then electric capacity C5 is connected; First output of integrated regulator W7809 is connected with the positive pole of electric capacity C6, the negative pole of its second output then electric capacity C6 is connected, and electric capacity C7 is then serially connected between first output of integrated regulator W7809 and the 3rd output.
7. a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit according to claim 6, it is characterized in that, described 3rd output circuit is made up of diode rectifier U3, electric capacity C8, electric capacity C9, electric capacity C10, diode D3 and integrated regulator W7809; Input and the secondary coil L4 of described diode rectifier U3 are in parallel, and the positive pole of electric capacity C8 is connected with the cathode output end of diode rectifier U3, its negative pole is then connected with the cathode output end of diode rectifier U3; Electric capacity C9 and electric capacity C8 is in parallel; First output of integrated regulator W7809 is connected with the positive pole of electric capacity C9, its second output is then connected with the negative pole of electric capacity C9; Electric capacity C10 is then serially connected between the 3rd output of integrated regulator W7809 and the second output; Diode D3 is then serially connected between first output of integrated regulator W7809 and the 3rd output.
8. a kind of balance modulation system multiple-channel output stabilized voltage power supply based on phase-sensitive detection circuit according to claim 7, it is characterized in that, described detection chip U3 is LM1496 Double deference analog multiplier.
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| CN201510319523.7A CN104967321A (en) | 2014-11-22 | 2015-06-11 | Multichannel output stabilized power supply of balanced modulation type based on phase sensitive detection circuit |
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| CN201410676330.2A CN104506057A (en) | 2014-11-22 | 2014-11-22 | Balanced modulation-type multipath output voltage-stabilizing power supply |
| CN2014106763302 | 2014-11-22 | ||
| CN201510319523.7A CN104967321A (en) | 2014-11-22 | 2015-06-11 | Multichannel output stabilized power supply of balanced modulation type based on phase sensitive detection circuit |
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| CN104467435A (en) * | 2014-11-27 | 2015-03-25 | 成都措普科技有限公司 | Balance modulation type multiplex output stabilized voltage supply based on logic protection amplifying circuit |
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| CN104506057A (en) * | 2014-11-22 | 2015-04-08 | 成都智利达科技有限公司 | Balanced modulation-type multipath output voltage-stabilizing power supply |
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| Title |
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| 叶霞: "双向平衡调制解调器LM1596/LM1496及其应用", 《电子技术》 * |
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