CN104953866A - Combined protective multiplexed output voltage-stabilized power source based on logic protection amplifying circuit - Google Patents
Combined protective multiplexed output voltage-stabilized power source based on logic protection amplifying circuit Download PDFInfo
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- CN104953866A CN104953866A CN201510316123.0A CN201510316123A CN104953866A CN 104953866 A CN104953866 A CN 104953866A CN 201510316123 A CN201510316123 A CN 201510316123A CN 104953866 A CN104953866 A CN 104953866A
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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
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
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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
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- 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
- H02M3/3353—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 at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
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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
- H02M3/33569—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 several active switching elements
- H02M3/33576—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 several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—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 several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a combined protective multiplexed output voltage-stabilized power source based on a logic protection amplifying circuit. The combined protective multiplexed output voltage-stabilized power source mainly comprises a diode rectifier U1, a three-terminal voltage stabilizer W1, a three-terminal voltage stabilizer W2, a transformer T, a primary side coil L1, a secondary side coil L2, a secondary side coil L3, a secondary side coil L4, a balanced modulation circuit, a switch filter circuit and the like. The primary side coil L1 is arranged on a primary side of the transformer T, the secondary side coil L2, the secondary side coil L3 and the secondary side coil L4 are arranged on secondary sides of the transformer T, the balanced modulation circuit is serially connected between the diode rectifier U1 and the three-terminal voltage stabilizer W1, and the switch filter circuit is serially connected between the balanced modulation circuit and the primary side coil L1. The power source is characterized in that the logic protection amplifying circuit is serially connected with a terminal Q of the three-terminal voltage stabilizer W1 and a power amplifier group. The combined protective multiplexed output voltage-stabilized power source based on the logic protection amplifying circuit has the advantages that circuit power supply can be automatically cut off when operating current or voltage of the circuit exceeds a preset value, and accordingly the circuit is protected from being damaged by impact of the current or voltage, and service life of the circuit is prolonged; in addition, the circuit is integrally simple in structure, and after combination with the balanced modulation circuit, intrinsic and external radio-frequency interferences can be effectively reduced for the circuit, so that manufacturing cost and maintenance cost are greatly reduced.
Description
Technical field
The present invention relates to a kind of switching power supply, specifically refer to the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying 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 it is comparatively large that the switching mode voltage stabilizer that current people adopt but exists ripple coefficient, when Correctional tube constantly switches between saturated and cut-off state, radio frequency interference can be produced to circuit, circuit more complicated and cost is higher.Meanwhile, traditional stabilized voltage power supply only has an output, namely can only have unique output voltage values, and this just largely limits the scope of application of stabilized voltage power supply.
Summary of the invention
The object of the invention is to the defect that ripple coefficient is comparatively large, radio frequency interference is serious, circuit is complicated, efficiency is not high and output voltage is unique overcoming the existence of current switching mode voltage stabilizer, provide logic-based to protect the combined protection formula multiple-channel output stabilized voltage power supply of amplifying circuit.
Object of the present invention is achieved through the following technical solutions:
The combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying circuit, primarily of 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, virtual protection amplifying circuit is serially connected with between the Q end and power amplifier group of three terminal regulator W1, equilibrium modulation circuit is provided with composite type protective circuit.
Described virtual protection amplifying circuit is primarily of power amplifier P3, power amplifier P4, NAND gate IC1, NAND gate IC2, negative pole is connected with the electrode input end of power amplifier P3, the polar capacitor C11 that positive pole is connected with the negative input of NAND gate IC2 after resistance R10, one end is connected with the negative input of NAND gate IC1, the resistance R7 that the other end is connected with the electrode input end of power amplifier P3, be serially connected in the resistance R8 between the negative input of power amplifier P3 and output, one end is connected with the output of NAND gate IC1, the resistance R9 that the other end is connected with the negative input of power amplifier P4, be serially connected in the polar capacitor C12 between the electrode input end of power amplifier P4 and output, positive pole is connected with the output of NAND gate IC2, negative pole is in turn through electric capacity C13 that voltage stabilizing didoe D4 is connected with the output of power amplifier P3 after resistance R11, P pole is connected with the output of power amplifier P4, N pole is in turn through diode D5 that resistance R13 is connected with the tie point of resistance R11 with voltage stabilizing didoe D4 after resistance R12, and N pole is connected with the negative pole of electric capacity C13, the voltage stabilizing didoe D6 that P pole is connected with the tie point of resistance R13 with diode D5 forms, the electrode input end of described NAND gate IC1 is connected with the negative input of power amplifier P3, the electrode input end of the output NAND gate IC2 of power amplifier P4 is connected, and its electrode input end is then connected with the output of power amplifier P3, the positive pole of described polar capacitor C11 is held with the Q of three terminal regulator W1 and is connected, and resistance R13 is then connected with power amplifier group with the tie point of resistance R12.
Described composite type protective circuit (10) is by incoming line, transformer T101, diode rectifier U101, voltage stabilizing integrated chip Q101, operational amplifier P101, operational amplifier P102, triode VT101, triode VT102, triode VT103, triode VT104, triode VT105, triode VT106, minus earth, the electric capacity C101 that positive pole is connected with the positive output end of diode rectifier U101, minus earth, the electric capacity C102 that positive pole is connected with the OUT pin of voltage stabilizing integrated chip Q101, one end is connected with the positive pole of electric capacity C102, the resistance R101 that the other end is connected with the negative input end of operational amplifier P101, N pole is connected with the positive pole of electric capacity C102, the diode D101 that negative pole is connected with the collector electrode of triode VT101, the relay K 101 in parallel with diode D101, one end is connected with the P pole of diode D101, the resistance R103 of other end ground connection after resistance R102, one end is connected with the base stage of triode VT101, the resistance R104 that the other end is connected with the output of operational amplifier P101, minus earth, the electric capacity C103 that positive pole is connected with the positive input terminal of operational amplifier P101, one end ground connection, the slide rheostat RP101 that the other end is connected with the positive pole of electric capacity C103, minus earth, the electric capacity C104 that positive pole is connected with the positive pole of electric capacity C102 after resistance R109, P pole is connected with the positive input terminal of operational amplifier P102, the voltage stabilizing didoe D102 that N pole is connected with the positive pole of electric capacity C104, one end is connected with the positive pole of electric capacity C102, the resistance R108 that the other end is connected with the negative input end of operational amplifier P102, one end ground connection, the resistance R107 that the other end is connected with the negative input end of operational amplifier P102, one end is connected with the output of operational amplifier P102, the resistance R106 that the other end is connected with the base stage of triode VT102, one end is connected with the N pole of diode D101, the resistance R105 that the other end is connected with the base stage of triode VT103, one end is connected with the emitter of triode VT104, the resistance R110 that the other end is connected with the collector electrode of triode VT105, and one end is connected with the base stage of triode VT104, the other end is connected with the emitter of triode VT106, the slide rheostat RP102 that sliding end is connected with the base stage of triode VT105 forms, wherein, the two ends on the former limit of transformer T101 are connected in two input lines of incoming line, the two ends of its secondary are connected on two inputs of diode rectifier U101, the negative output terminal ground connection of diode rectifier U101, the GND pin ground connection of voltage stabilizing integrated chip Q101, its IN pin is connected with the positive pole of electric capacity C101, the negative input end of operational amplifier P102 is connected with the collector electrode of triode VT102, the emitter of triode VT102 is connected with the emitter of the base stage of triode VT103 with the base stage of triode VT106 and triode VT101 simultaneously, the N pole of diode D101 is also connected with the collector electrode of triode VT103 with the collector electrode of triode VT104, the base stage of triode VT104 is connected with the emitter of triode VT105 with the emitter of triode VT103 simultaneously, the emitter of triode VT104 is connected with the collector electrode of triode VT106, the grounded emitter of triode VT106, the normally-closed contact switch S 101 of described relay K 101 is arranged on incoming line.
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.
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 electrode input end of power amplifier P2, and its negative input is then all connected with the tie point of resistance R13 with resistance R12; 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.
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 provided with composite type protective circuit, can power by automatic shutoff circuit, avoid circuit by curtage impact failure, better extend the useful life of circuit when the running current of circuit or voltage exceed preset value.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is virtual protection amplification circuit structure schematic diagram of the present invention.
Fig. 3 is the circuit diagram of composite type amplifying circuit of the present invention.
Description of reference numerals:
10, composite type amplifying circuit; 20, virtual protection amplifying circuit.
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, balance modulation system multiple-channel output stabilized voltage power supply of the present invention, primarily of 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, be serially connected in the virtual protection amplifying circuit 20 between three terminal regulator W1 and power amplifier group, and the composite type protective circuit 10 arranged on equilibrium modulation circuit forms.
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.
Power amplifier group is made up of power amplifier P1 and power amplifier P2.As shown in the figure, this power amplifier P1 is all connected with the tie point of diode D1 with resistance R2 with the electrode input end of power amplifier P2.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.
The structure of described virtual protection amplifying circuit 20 as shown in Figure 2, namely it is primarily of power amplifier P3, power amplifier P4, NAND gate IC1, NAND gate IC2, negative pole is connected with the electrode input end of power amplifier P3, the polar capacitor C11 that positive pole is connected with the negative input of NAND gate IC2 after resistance R10, one end is connected with the negative input of NAND gate IC1, the resistance R7 that the other end is connected with the electrode input end of power amplifier P3, be serially connected in the resistance R8 between the negative input of power amplifier P3 and output, one end is connected with the output of NAND gate IC1, the resistance R9 that the other end is connected with the negative input of power amplifier P4, be serially connected in the polar capacitor C12 between the electrode input end of power amplifier P4 and output, positive pole is connected with the output of NAND gate IC2, negative pole is in turn through electric capacity C13 that voltage stabilizing didoe D4 is connected with the output of power amplifier P3 after resistance R11, P pole is connected with the output of power amplifier P4, N pole is in turn through diode D5 that resistance R13 is connected with the tie point of resistance R11 with voltage stabilizing didoe D4 after resistance R12, and N pole is connected with the negative pole of electric capacity C13, the voltage stabilizing didoe D6 that P pole is connected with the tie point of resistance R13 with diode D5 forms.
Meanwhile, the electrode input end of described NAND gate IC1 is connected with the negative input of power amplifier P3; The electrode input end of the output NAND gate IC2 of power amplifier P4 is connected, and its electrode input end is then connected with the output of power amplifier P3.
During connection, the positive pole of described polar capacitor C11 will be held with the Q of three terminal regulator W1 and be connected, and resistance R13 is then connected with the negative input of power amplifier P2 with the negative input of power amplifier P1 respectively with the tie point of resistance R12.
As shown in Figure 3, described composite type protective circuit 10 is by incoming line, transformer T101, diode rectifier U101, voltage stabilizing integrated chip Q101, operational amplifier P101, operational amplifier P102, triode VT101, triode VT102, triode VT103, triode VT104, triode VT105, triode VT106, resistance R101, resistance R102, resistance R103, resistance R104, resistance R105, resistance R106, resistance R107, resistance R108, resistance R109, resistance R110, electric capacity C101, electric capacity C102, electric capacity C103, electric capacity C104, diode D101, voltage stabilizing didoe D102, slide rheostat RP101, slide rheostat RP102 forms, during connection, the minus earth of electric capacity C101, positive pole is connected with the positive output end of diode rectifier U101, the minus earth of electric capacity C102, positive pole is connected with the OUT pin of voltage stabilizing integrated chip Q101, one end of resistance R101 is connected with the positive pole of electric capacity C102, the other end is connected with the negative input end of operational amplifier P101, the N pole of diode D101 is connected with the positive pole of electric capacity C102, negative pole is connected with the collector electrode of triode VT101, relay K 101 is in parallel with diode D101, one end of resistance R103 is connected with the P pole of diode D101, the other end is ground connection after resistance R102, one end of resistance R104 is connected with the base stage of triode VT101, the other end is connected with the output of operational amplifier P101, the minus earth of electric capacity C103, positive pole is connected with the positive input terminal of operational amplifier P101, one end ground connection of slide rheostat RP101, the other end is connected with the positive pole of electric capacity C103, the minus earth of electric capacity C104, positive pole is connected with the positive pole of electric capacity C102 after resistance R109, the P pole of voltage stabilizing didoe D102 is connected with the positive input terminal of operational amplifier P102, N pole is connected with the positive pole of electric capacity C104, one end of resistance R108 is connected with the positive pole of electric capacity C102, the other end is connected with the negative input end of operational amplifier P102, one end ground connection of resistance R107, the other end is connected with the negative input end of operational amplifier P102, one end of resistance R106 is connected with the output of operational amplifier P102, the other end is connected with the base stage of triode VT102, one end of resistance R105 is connected with the N pole of diode D101, the other end is connected with the base stage of triode VT103, one end of resistance R110 is connected with the emitter of triode VT104, the other end is connected with the collector electrode of triode VT105, one end of slide rheostat RP102 is connected with the base stage of triode VT104, the other end is connected with the emitter of triode VT106, sliding end is connected with the base stage of triode VT105, wherein, the two ends on the former limit of transformer T101 are connected in two input lines of incoming line, the two ends of its secondary are connected on two inputs of diode rectifier U101, the negative output terminal ground connection of diode rectifier U101, the GND pin ground connection of voltage stabilizing integrated chip Q101, its IN pin is connected with the positive pole of electric capacity C101, the negative input end of operational amplifier P102 is connected with the collector electrode of triode VT102, the emitter of triode VT102 is connected with the emitter of the base stage of triode VT103 with the base stage of triode VT106 and triode VT101 simultaneously, the N pole of diode D101 is also connected with the collector electrode of triode VT103 with the collector electrode of triode VT104, the base stage of triode VT104 is connected with the emitter of triode VT105 with the emitter of triode VT103 simultaneously, the emitter of triode VT104 is connected with the collector electrode of triode VT106, the grounded emitter of triode VT106, the normally-closed contact switch S 101 of described relay K 101 is arranged on incoming line.When the voltage of circuit or electric current exceed preset value, relay K 101 electric, thus normally-closed contact switch S 101 is disconnected, makes whole down circuitry.
As mentioned above, just the present invention can well be realized.
Claims (7)
1. the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying circuit, primarily of 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, virtual protection amplifying circuit (20) is serially connected with between the Q end and power amplifier group of three terminal regulator W1, equilibrium modulation circuit is provided with composite type protective circuit (10), described virtual protection amplifying circuit (20) is primarily of power amplifier P3, power amplifier P4, NAND gate IC1, NAND gate IC2, negative pole is connected with the electrode input end of power amplifier P3, the polar capacitor C11 that positive pole is connected with the negative input of NAND gate IC2 after resistance R10, one end is connected with the negative input of NAND gate IC1, the resistance R7 that the other end is connected with the electrode input end of power amplifier P3, be serially connected in the resistance R8 between the negative input of power amplifier P3 and output, one end is connected with the output of NAND gate IC1, the resistance R9 that the other end is connected with the negative input of power amplifier P4, be serially connected in the polar capacitor C12 between the electrode input end of power amplifier P4 and output, positive pole is connected with the output of NAND gate IC2, negative pole is in turn through electric capacity C13 that voltage stabilizing didoe D4 is connected with the output of power amplifier P3 after resistance R11, P pole is connected with the output of power amplifier P4, N pole is in turn through diode D5 that resistance R13 is connected with the tie point of resistance R11 with voltage stabilizing didoe D4 after resistance R12, and N pole is connected with the negative pole of electric capacity C13, the voltage stabilizing didoe D6 that P pole is connected with the tie point of resistance R13 with diode D5 forms, the electrode input end of described NAND gate IC1 is connected with the negative input of power amplifier P3, the electrode input end of the output NAND gate IC2 of power amplifier P4 is connected, and its electrode input end is then connected with the output of power amplifier P3, the positive pole of described polar capacitor C11 is held with the Q of three terminal regulator W1 and is connected, and resistance R13 is then connected with power amplifier group with the tie point of resistance R12,
Described composite type protective circuit (10) is by incoming line, transformer T101, diode rectifier U101, voltage stabilizing integrated chip Q101, operational amplifier P101, operational amplifier P102, triode VT101, triode VT102, triode VT103, triode VT104, triode VT105, triode VT106, minus earth, the electric capacity C101 that positive pole is connected with the positive output end of diode rectifier U101, minus earth, the electric capacity C102 that positive pole is connected with the OUT pin of voltage stabilizing integrated chip Q101, one end is connected with the positive pole of electric capacity C102, the resistance R101 that the other end is connected with the negative input end of operational amplifier P101, N pole is connected with the positive pole of electric capacity C102, the diode D101 that negative pole is connected with the collector electrode of triode VT101, the relay K 101 in parallel with diode D101, one end is connected with the P pole of diode D101, the resistance R103 of other end ground connection after resistance R102, one end is connected with the base stage of triode VT101, the resistance R104 that the other end is connected with the output of operational amplifier P101, minus earth, the electric capacity C103 that positive pole is connected with the positive input terminal of operational amplifier P101, one end ground connection, the slide rheostat RP101 that the other end is connected with the positive pole of electric capacity C103, minus earth, the electric capacity C104 that positive pole is connected with the positive pole of electric capacity C102 after resistance R109, P pole is connected with the positive input terminal of operational amplifier P102, the voltage stabilizing didoe D102 that N pole is connected with the positive pole of electric capacity C104, one end is connected with the positive pole of electric capacity C102, the resistance R108 that the other end is connected with the negative input end of operational amplifier P102, one end ground connection, the resistance R107 that the other end is connected with the negative input end of operational amplifier P102, one end is connected with the output of operational amplifier P102, the resistance R106 that the other end is connected with the base stage of triode VT102, one end is connected with the N pole of diode D101, the resistance R105 that the other end is connected with the base stage of triode VT103, one end is connected with the emitter of triode VT104, the resistance R110 that the other end is connected with the collector electrode of triode VT105, and one end is connected with the base stage of triode VT104, the other end is connected with the emitter of triode VT106, the slide rheostat RP102 that sliding end is connected with the base stage of triode VT105 forms, wherein, the two ends on the former limit of transformer T101 are connected in two input lines of incoming line, the two ends of its secondary are connected on two inputs of diode rectifier U101, the negative output terminal ground connection of diode rectifier U101, the GND pin ground connection of voltage stabilizing integrated chip Q101, its IN pin is connected with the positive pole of electric capacity C101, the negative input end of operational amplifier P102 is connected with the collector electrode of triode VT102, the emitter of triode VT102 is connected with the emitter of the base stage of triode VT103 with the base stage of triode VT106 and triode VT101 simultaneously, the N pole of diode D101 is also connected with the collector electrode of triode VT103 with the collector electrode of triode VT104, the base stage of triode VT104 is connected with the emitter of triode VT105 with the emitter of triode VT103 simultaneously, the emitter of triode VT104 is connected with the collector electrode of triode VT106, the grounded emitter of triode VT106, the normally-closed contact switch S 101 of described relay K 101 is arranged on incoming line.
2. the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying 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. the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying 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.
4. the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying 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 electrode input end of power amplifier P2, and its negative input is then all connected with the tie point of resistance R13 with resistance R12; 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. the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying 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. the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying 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. the combined protection formula multiple-channel output stabilized voltage power supply of logic-based protection amplifying 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.
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| CN105242209A (en) * | 2015-11-21 | 2016-01-13 | 成都科瑞信科技有限责任公司 | Voltage-stabilizing tested rotation speed automatic adjustment-type motor testing system |
| CN105467316A (en) * | 2015-11-21 | 2016-04-06 | 成都科瑞信科技有限责任公司 | Voltage-stabilization-type test rotating speed automation adjusting type motor test system based on band-pass filtering |
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| CN104391164A (en) * | 2014-11-18 | 2015-03-04 | 成都措普科技有限公司 | High-precision mains supply monitoring system |
| 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 |
| 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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|---|---|---|---|---|
| CN104391164A (en) * | 2014-11-18 | 2015-03-04 | 成都措普科技有限公司 | High-precision mains supply monitoring system |
| 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 |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105242209A (en) * | 2015-11-21 | 2016-01-13 | 成都科瑞信科技有限责任公司 | Voltage-stabilizing tested rotation speed automatic adjustment-type motor testing system |
| CN105467316A (en) * | 2015-11-21 | 2016-04-06 | 成都科瑞信科技有限责任公司 | Voltage-stabilization-type test rotating speed automation adjusting type motor test system based on band-pass filtering |
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