CN100385362C - Large power DC voltage stabilization and current stabilization variable voltage and variable current power supply - Google Patents
Large power DC voltage stabilization and current stabilization variable voltage and variable current power supply Download PDFInfo
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- CN100385362C CN100385362C CNB2005100271729A CN200510027172A CN100385362C CN 100385362 C CN100385362 C CN 100385362C CN B2005100271729 A CNB2005100271729 A CN B2005100271729A CN 200510027172 A CN200510027172 A CN 200510027172A CN 100385362 C CN100385362 C CN 100385362C
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Abstract
The present invention discloses a large power DC voltage stabilization and current stabilization, and variable voltage and variable current power supply. The present invention is characterized in that the present invention comprises a main DC voltage current forming circuit, an auxiliary DC voltage current forming circuit, a DC voltage current synthesis circuit, a voltage current sampling circuit, a sampling signal control circuit, an over voltage and over current protection warning circuit, etc. For a voltage stabilization and current stabilization power supply, the main DC voltage current forming circuit and the auxiliary DC voltage current forming circuit separately provide loading with main DC voltage current, and complementary voltage current desired by the voltage stabilization and current stabilization; the fluctuation of the DC voltage current in the loading can be smoothed under the control of the sampling signal control circuit to obtain stabilized DC voltage current; for a variable voltage and variable current power supply, the voltage current of both the main and the auxiliary DC voltage current forming circuits fluctuate by following the fluctuation of environmental parameters under the control of the sampling signal control circuit. The present invention has the advantages of continuous adjustable output and input voltage, good input voltage waveform, small output and input current ripple, high stability, etc.
Description
Technical field
The present invention relates to power supply, especially relate to a kind of large power DC voltage stabilization and current stabilization variable voltage and variable current power supply.
Background technology
I had once applied for utility model patent " large power DC voltage stabilization and current stabilization the power supply " (patent No.: ZL00201867.5) in 2000, this power supply is because input AC regulating circuit low side pressure regulating performance is bad, main dc voltage and current formation circuit filtering electric capacity is many and burden is heavy, secondary dc voltage and current forms circuit provides additional electric current and voltage to be undertaken by the controlled IGBT on-off circuit of secondary dc voltage and current formation circuit to load, has the high-frequency electromagnetic width of cloth to penetrate.When the load drastic change, electric current and voltage output servo-actuated is relatively poor, does not have variable voltage and variable current power supply.
Summary of the invention
The object of the present invention is to provide that a kind of input and output voltage is all adjustable continuously, good stability, servo-actuated is good, mobility is good large power DC voltage stabilization and current stabilization variable voltage and variable current power supply.
The object of the present invention is achieved like this: a kind of large power DC voltage stabilization and current stabilization variable voltage and variable current power supply, feature are to comprise that main dc voltage and current forms circuit, secondary dc voltage and current forms circuit, dc voltage and current combiner circuit, electric current and voltage sample circuit, sampled signal amplifying circuit, sampled signal control circuit and auxiliary direct current source circuit.Concerning current regulator power supply, main dc voltage and current forms circuit and provides the main DC electric current and voltage to load, secondary dc voltage and current forms circuit provides the load voltage stabilization and current stabilization required additional electric current and voltage to load, the fluctuation that main dc voltage and current forms the dc voltage and current that circuit produces in the load forms circuit by secondary dc voltage and current and forms the regulating circuit of step-down self-adaptation successively in the circuit by secondary dc voltage and current carry out floatingly under the control of sampled signal control circuit, flows thereby obtain galvanic current piezoelectricity in load; Concerning variable voltage and variable current power supply, the major-minor dc voltage and current form the circuit voltage electric current all under the control of sampled signal control circuit the fluctuation with environmental parameter fluctuate.
The present invention also comprises the over-voltage over-current protection warning circuit.
The present invention is because design has main dc voltage and current to form circuit (being that the low-voltage dc voltage electric current forms circuit), secondary dc voltage and current forms circuit (being that the high-voltage dc voltage electric current forms circuit), the dc voltage and current combiner circuit, the electric current and voltage sample circuit, the sampled signal amplifying circuit, sampled signal control circuit and auxiliary direct current source circuit, main dc voltage and current forms circuit and provides main dc voltage and current (main dc power supply) to load, secondary dc voltage and current forms circuit and provides the required additional electric current and voltage of load voltage stabilizing (secondary direct supply) to load, dc voltage and current forms the fluctuation of the dc voltage and current of circuit generation in the load, by secondary dc voltage and current form circuit under the control of sampled signal control circuit by secondary dc voltage and current form secondary direct supply step-down self-adaptation successively regulating circuit in the circuit carry out floating, thereby in load, obtain galvanic current piezoelectricity stream.Perhaps, the major-minor dc voltage and current form the circuit voltage electric current all under the control of sampled signal control circuit the fluctuation with environmental parameter fluctuate.Main dc voltage and current can exchange low side pressure regulation holding circuit by triode; rectifier bridge; auto-adaptive filter circuit obtains; also can exchange low side pressure regulation holding circuit by triode; the former limit of transformer and the low-voltage coil of secondary; rectifier bridge; auto-adaptive filter circuit obtains; secondary dc voltage and current can exchange high-end pressure regulation holding circuit by triode; rectifier bridge; auto-adaptive filter circuit and secondary direct supply step-down self-adaptation successively regulating circuit obtain, and also can exchange low side pressure regulation holding circuit by triode; the former limit of transformer and the high-tension coil of secondary; rectifier bridge; auto-adaptive filter circuit and secondary direct supply step-down self-adaptation successively regulating circuit obtain.Auxiliary DC power supply provides auxiliary direct current piezoelectricity stream for other circuit.The present invention will use transformer under the situation that is output as low-voltage, high-current, high voltage-small current; Can be under other situation without transformer, the present invention has that input and output voltage is all adjustable continuously, input voltage waveform is good, the input and output current ripples is little, good stability, servo-actuated is good, mobility is good advantage, is applicable in departments such as industry, scientific researches.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the schematic diagram of regulator rectifier circuit;
Fig. 3 is six replacement circuit schematic diagrams of the compound tube in the regulating circuit of step-down self-adaptation successively;
Fig. 4 is three replacement circuit schematic diagrams of the NMOS pipe of NMOS pipe AC voltage adjusting circuit;
Fig. 5 is the circuit theory diagrams that transformer three phase voltage regulating current rectifying and wave filtering circuit is arranged, and the T1-T3 among the figure is a triode AC voltage adjusting holding circuit;
Fig. 6 is the circuit theory diagrams of transless three phase voltage regulating current rectifying and wave filtering circuit, and the T4-T9 among the figure is a triode AC voltage adjusting holding circuit.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.
Embodiment 1: adopt transformer B1
The present invention by main dc voltage and current form circuit, secondary dc voltage and current forms circuit, dc voltage and current combiner circuit, electric current and voltage sample circuit, sampled signal amplifying circuit, sampled signal control circuit, over-voltage over-current protection warning circuit and auxiliary DC power supply circuit and forms.
Main dc voltage and current forms circuit and exchanges low side pressure regulation holding circuit by triode, the primary coil L1 of transformer B1, secondary low-voltage coil L2, triac device K1, rectifier bridge ZL1, auto-adaptive filter circuit is formed, wherein triode exchanges low side pressure regulation holding circuit by triode GTR1, GTR2, BG1--BG3, adjustable resistance W1, resistance R 1--R6, capacitor C 1, diode D1-D8 and other element are formed, the collector of triode GTR1 and an end that meets civil power 220V after fuse BX1 connects, emitter connects the anode of diode D3, the negative electrode of diode D3 connects the negative electrode of diode D4, the anode of diode D4 connects the emitter of triode GTR2, the base stage of triode GTR1 connects the emitter of triode BG1, the base stage of triode GTR2 connects the emitter of triode BG2, resistance R 1 is connected in parallel between the collector of the collector of triode GTR1 and triode BG1, resistance R 2 is connected in parallel between the collector of the collector of triode GTR2 and triode BG2, the negative electrode of diode D1 connects the collector of triode GTR1, anode meets diode D3, the common port of D4 negative electrode and diode D2 anode, the negative electrode of diode D2 connects the collector of triode GTR2, triode BG1 base stage and triode BG2 base stage all connect the negative electrode of diode D5, the anode of diode D5 and the emitter that meets triode BG 3 after resistance R 4 is connected, the base stage of triode BG 3 and resistance R 6, after connecting successively, adjustable resistance W1 connects the negative electrode of diode D7, the anode of diode D7 connects the collector of triode GTR1, diode D6 and diode D5 reverse parallel connection, capacitor C 1 is connected in parallel on anode and the triode BG3 collector of diode D5, between the common port of diode D7 negative electrode and diode D8 negative electrode, the anode of diode D8 meets the collector of triode GTR2 and the end points E2 of triac device K1, the common port of E3; Rectifier bridge ZL1 is made up of four diode D9--D12, the end points E3 of K switch 1, G3 short circuit, the end points F3 of the termination K switch 1 of the primary coil L1 of transformer B1, the end points F2 of the termination K switch 1 of secondary low-voltage coil L2, the input end of the other end of the other end of primary coil L1, secondary low-voltage coil L2 and rectifier bridge ZL1 all connects the other end of civil power 220V, and the end points G2 of K switch 1 connects another input end of rectifier bridge ZL1; Auto-adaptive filter circuit is by field effect transistor N1, N2, triode BG4, BG5, adjustable resistance W2, W3, resistance R 7-R10, capacitor C 2-C5, inductance L 4, L5 and other element are formed, the positive output termination polar capacitor C2 positive pole of rectifier bridge ZL1 and the common port of resistance R 7 one ends, negative output terminal ground connection, ground connection after the other end of resistance R 7 is connected with adjustable resistance W2, the grid of field effect transistor N1 connects the intermediate contact of adjustable resistance W2, source electrode connects the base stage of triode BG4, drain electrode with connect the collector of triode BG4 and the common port of polar capacitor C3 negative pole after resistance R 8 is connected, the grounded emitter of triode BG4, the negative pole of polar capacitor C2 meets polar capacitor C3, the common port of C4 positive pole and resistance R 9 one ends, inductance L 4 is in parallel with polar capacitor C2, ground connection after the other end of resistance R 9 is connected with adjustable resistance W3, the grid of field effect transistor N2 connects the intermediate contact of adjustable resistance W3, source electrode connects the base stage of triode BG5, drain electrode with connect the collector of triode BG5 and the common port of polar capacitor C5 negative pole after resistance R 10 is connected, the grounded emitter of triode BG5, the negative pole of polar capacitor C4 connects the positive pole of polar capacitor C5, and inductance L 5 is in parallel with polar capacitor C4.
Secondary dc voltage and current forms circuit and exchanges low side pressure regulation holding circuit by triode, the primary coil L1 of transformer B1, secondary high-tension coil L3, triac device K1, rectifier bridge ZL2, fuse BX1, auto-adaptive filter circuit, secondary direct supply step-down self-adaptation successively regulating circuit is formed, wherein triode exchanges low side pressure regulation holding circuit by triode GTR1, GTR2, BG1--BG3, adjustable resistance W1, resistance R 1--R6, capacitor C 1, diode D1D8 and other element are formed, rectifier bridge ZL2 is made up of four diode D22-D25, auto-adaptive filter circuit is by field effect transistor N3, adjustable resistance W5, resistance R 11, capacitor C 9--C11 and other element are formed, the end points G1 of the input termination switch K1 of rectifier bridge ZL2, the common port of another input termination primary coil L1 and secondary low-voltage coil L3, positive output end and resistance R 11, ground connection after adjustable resistance W5 connects successively, negative output terminal ground connection, the grid of field effect transistor N3 connects the intermediate contact of adjustable resistance W5, drain electrode connects the negative pole of polar capacitor C9, source ground, the positive pole of polar capacitor C9 connects the positive output end of rectifier bridge ZL2; Secondary direct supply step-down self-adaptation successively regulating circuit is by field effect transistor N4-N8, triode GTR5-GTR9, adjustable resistance W6--W10, resistance R 20-R31, capacitor C 11--C17, diode D26, D27, stabilivolt ZW1-ZW3 and other element are formed, the positive output end of the public termination rectifier bridge ZL2 of one end of resistance R 20 and polar capacitor C10 positive pole, ground connection after the other end is connected with adjustable resistance W6, the grid of field effect transistor N4 connects the intermediate contact of adjustable resistance W6, source electrode connects the base stage of triode GTR5, drain electrode with connect the collector of triode GTR5 and the common port of polar capacitor C10 negative pole after resistance R 21 is connected, ground connection after the emitter of triode GTR5 is connected with resistance R 22, inductance L 7 is in parallel with polar capacitor C10, polar capacitor C12 is in parallel with resistance R 22, the emitter of one termination triode GTR5 of resistance R 23, ground connection after the other end is connected with adjustable resistance W7, the grid of field effect transistor N5 connects the intermediate contact of adjustable resistance W7, source electrode connects the base stage of triode GTR6, drain electrode and the common port that connects triode GTR5 emitter and triode GTR6 collector after resistance R 24 is connected, ground connection after the emitter of triode GTR6 is connected with resistance R 25, stabilivolt ZW1, polar capacitor C13 is all in parallel with adjustable resistance W7, polar capacitor C14 is in parallel with resistance R 25, the emitter of one termination triode GTR6 of resistance R 26, ground connection after the other end is connected with adjustable resistance W8, the grid of field effect transistor N6 connects the intermediate contact of adjustable resistance W8, source electrode connects the base stage of triode GTR7, drain electrode with connect the emitter of triode GTR6 and the common port of triode GTR7 collector after resistance R 27 is connected, ground connection after the emitter of triode GTR7 is connected with resistance R 28, stabilivolt ZW2, polar capacitor C15 is all in parallel with adjustable resistance W8, polar capacitor C16 is in parallel with resistance R 28, the emitter of one termination triode GTR7 of resistance R 29, ground connection after the other end is connected with adjustable resistance W9, the grid of field effect transistor N7 connects the intermediate contact of adjustable resistance W9, source electrode connects the base stage of triode GTR8, drain electrode and the common port that connects triode GTR7 emitter and triode GTR8 collector after resistance R 30 is connected, the emitter of triode GTR8 connects the anode of diode D26, stabilivolt ZW3, polar capacitor C17 is all in parallel with adjustable resistance W9, the grid of field effect transistor N8 connects the intermediate contact of adjustable resistance W10, source electrode connects the base stage of triode GTR9, drain electrode and the common port that connects triode GTR8 collector and triode GTR9 collector after resistance R 31 is connected, the emitter of triode GTR9 connects the anode of diode D27.
The dc voltage and current combiner circuit is made up of polar capacitor C6, C7, inductance L 6 and load R12, the positive pole of polar capacitor C6 connects the negative electrode of diode D26, minus earth, inductance L 6 is attempted by between the negative electrode of the negative electrode of diode D26 and diode D27, ground connection after the negative electrode of diode D27 is connected with load R12, polar capacitor C7 is in parallel with load R12.
The electric current and voltage sample circuit is by voltage sample circuit, current sampling circuit and environmental parameter sample circuit are formed, wherein voltage sample circuit is by field effect transistor N15, resistance R 55-R58, triode BG12, adjustable resistance W20, W21 forms, the negative electrode of the public terminating diode D26 of resistance R 55 1 ends and field effect transistor N15 drain electrode, ground connection after the other end is connected with adjustable resistance W20, the grid of field effect transistor N15 connects the intermediate contact of adjustable resistance W20, source electrode and resistance R 56, R57 series connection back ground connection, ground connection after the base stage of triode BG12 is connected with adjustable resistance W21, the intermediate contact connecting resistance R56 of adjustable resistance W21, the link of R57, the grounded collector of triode BG12, emitter with connect+12V voltage after resistance R 58 is connected; Current sampling circuit is made up of triode BG13, diode D13, resistance R 59, adjustable resistance W19, the negative electrode of the base stage of triode BG13 and diode D13 all connects field effect transistor N15 drain electrode, emitter connects the common port of diode D13 anode and polar capacitor C5 positive pole, ground connection after collector is connected with adjustable resistance W19, resistance R 59; The environmental parameter sample circuit is by field effect transistor N16, thermistor R43, resistance R 44-R46, adjustable resistance W16, W17, voltage stabilizing diode ZW7 forms, the drain electrode of field effect transistor N16 with connect+12V voltage after resistance R 46 is connected, one termination of adjustable resistance W16+12V voltage, the other end and thermistor R43, resistance R 44, adjustable resistance W17 series connection back ground connection, the plus earth of voltage stabilizing diode ZW7, the negative electrode of voltage stabilizing diode ZW7 connects the source electrode of field effect transistor N16, the grid of field effect transistor N16 meets thermistor R43, the public connecting end of resistance R 44, the source electrode of one termination field effect transistor N16 of resistance R 45, another termination+12V voltage.
The sampled signal amplifying circuit is by integrated circuit (IC) 1, IC2, resistance R 47-R50, voltage stabilizing diode ZW8, ZW9 and other element are formed, the contact D of the positive input terminal order cutter three throw switch K4 of integrated circuit (IC) 1, negative input end connects the negative electrode of voltage stabilizing diode ZW8, the plus earth of voltage stabilizing diode ZW8, resistance R 47 is attempted by+negative electrode of 12V voltage and voltage stabilizing diode ZW8 between, the negative input end of the output termination integrated circuit (IC) 2 of integrated circuit (IC) 1, the negative electrode of voltage stabilizing diode ZW9 connects the positive input terminal of integrated circuit (IC) 2, plus earth, resistance R 48 is attempted by+negative electrode of 12V voltage and voltage stabilizing diode ZW9 between, integrated circuit (IC) 1, the power end of IC2 all with after a resistance is connected connects+12V voltage, earth terminal ground connection.
The sampled signal control circuit is made up of photoelectrical coupler TDL1-TDL4, resistance R 18, R19, the anode of the photodiode of photoelectrical coupler TDL1 connects the output terminal of integrated circuit (IC) 1, ground connection after negative electrode is connected with resistance R 49, the grounded emitter of phototriode, collector and the grid that meets field effect transistor N4 after resistance R 18 is connected; The anode of the photodiode of photoelectrical coupler TDL2 connects the output terminal of integrated circuit (IC) 1 after K switch 3, negative electrode is through K switch 3 and ground connection after resistance R 49 is connected, the emitter of phototriode and the negative electrode that meets diode D3 after resistance R 3 is connected, collector connecting transistor BG1 base stage; The anode of the photodiode of photoelectrical coupler TDL3 connects the output terminal of integrated circuit (IC) 2, the negative electrode back ground connection of connecting with resistance R 50, and the emitter of phototriode connects the grid of field effect transistor N4, collector and the positive pole that meets polar capacitor C9 after resistance R 19 is connected; The anode of the photodiode of photoelectrical coupler TDL4 connects the output terminal of integrated circuit (IC) 2 after K switch 2, negative electrode is through K switch 2 and ground connection after resistance R 50 is connected, the emitter of phototriode and the negative electrode that meets diode D6 after resistance R 5 is connected, the collector of collector connecting transistor BG 3.Photoelectrical coupler TDL1, TDL2, TDL3, TDL4 control electric current and voltage change continuously.
The over-voltage over-current protection warning circuit is made up of photoelectrical coupler TDL5, TDL6, field effect transistor N17, triode BG14, diode D38, D39, resistance R 51-R54, adjustable resistance W18, polar capacitor C26, LED, loudspeaker SPK, the anode of the photodiode of photoelectrical coupler TDL5 connects+12V voltage, negative electrode connects triode BG14 base stage, the emitter of phototriode connects the negative electrode of diode D3, collector connecting transistor BG1 base stage; The anode of the photodiode of photoelectrical coupler TDL6 connects+12V voltage, and negative electrode connects triode BG14 base stage, and the emitter of phototriode connects the negative electrode of diode D16, collector connecting transistor BG6 base stage; The anode of diode D38 connects the output terminal of integrated circuit (IC) 1, negative electrode connects the common port of field effect transistor N17 grid and polar capacitor C26 positive pole, ground connection after the source electrode of field effect transistor N17 is connected with resistance R 52, drain electrode connects the base stage of triode BG14, the emitter of triode BG14 with connect+12V voltage after resistance R 54 is connected, the anode of collector sending and receiving optical diode LED, ground connection after the negative electrode of LED is connected with loudspeaker SPK, the anode of diode D39 connects the source electrode of field effect transistor N17, negative electrode with connect+12V voltage after resistance R 53 is connected, adjustable resistance W18 is connected in parallel between the negative electrode and ground of diode D39, the minus earth of polar capacitor C26, resistance R 51 is in parallel with polar capacitor C26.
Auxiliary power circuit is by the field effect transistor AC voltage adjusting circuit, transformer B2, rectifier bridge ZL3, fuse BX3, auto-adaptive filter circuit, accessory power supply step-down self-adaptation successively regulating circuit is formed, wherein the field effect transistor AC voltage adjusting circuit is by field effect transistor N9, N10, adjustable resistance W11, resistance R 32, diode D28-D33, inductance L 8 and other element are formed, the drain electrode of field effect transistor N9 and an end that meets civil power 220V after fuse BX3 connects, grid connects field effect transistor N10 grid, the drain electrode of the public termination field effect transistor N9 of diode D28 negative electrode and diode D32 anode, the drain electrode of the public termination field effect transistor N10 of diode D29 negative electrode and diode D33 anode, the common port of diode D28 anode and diode D29 anode and the common port that connects diode D30 negative electrode and diode D31 negative electrode after inductance L 8 is connected, the anode of diode D30 connects the source electrode of field effect transistor N9, the anode of diode D31 connects the source electrode of field effect transistor N10, the common port of diode D32 negative electrode and diode D33 negative electrode successively with resistance R 32, connect the common port of diode D30 negative electrode and diode D31 negative electrode after the adjustable resistance W11 series connection, the intermediate contact of adjustable resistance W11 meets field effect transistor N9, the grid of N10; Rectifier bridge ZL3 is made up of four diode D34--D37, the negative electrode of the terminating diode D29 of the primary coil L9 of transformer B2, the other end of another termination civil power 220V, two input ends of the two termination rectifier bridge ZL3 of secondary coil L10; Auto-adaptive filter circuit is by field effect transistor N11, triode BG8, adjustable resistance W12, resistance R 33a, R33, polar capacitor C18-C20, inductance L 11 is formed, the positive output end of rectifier bridge ZL3 and resistance R 33a, ground connection after adjustable resistance W12 connects successively, negative output terminal ground connection, the grid of field effect transistor N11 connects the intermediate contact of adjustable resistance W12, source electrode connects the base stage of triode BG8, drain electrode with connect the collector of triode BG8 and the common port of polar capacitor C20 negative pole after resistance R 33 is connected, the grounded emitter of triode BG8, polar capacitor C20, C19, the positive pole of C18 all connects the positive output end of rectifier bridge ZL3, inductance L 11 is in parallel with polar capacitor C19, the minus earth of polar capacitor C18; Accessory power supply step-down self-adaptation successively regulating circuit is by field effect transistor N12-N14, triode BG9-BG11, adjustable resistance W13-W15, resistance R 34-R42, capacitor C 21-C25, stabilivolt ZW4-ZW6 and other element are formed, the negative pole of one termination polar capacitor C19 of resistance R 34, ground connection after the other end is connected with adjustable resistance W13, the grid of field effect transistor N12 connects the intermediate contact of adjustable resistance W13, source electrode connects the base stage of triode BG9, drain electrode with connect the collector of triode BG9 and the common port of polar capacitor C19 negative pole after resistance R 35 is connected, ground connection after the emitter of triode BG9 is connected with resistance R 36, stabilivolt ZW4, polar capacitor C21 is all in parallel with adjustable resistance W13, polar capacitor C22 is in parallel with resistance R 36, the emitter of one termination triode BG9 of resistance R 37, ground connection after the other end is connected with adjustable resistance W14, the grid of field effect transistor N13 connects the intermediate contact of adjustable resistance W14, source electrode connects the base stage of triode BG10, drain electrode and the common port that connects triode BG9 emitter and triode BG10 collector after resistance R 38 is connected, ground connection after the emitter of triode BG10 is connected with resistance R 39, stabilivolt ZW5, polar capacitor C23 is all in parallel with adjustable resistance W14, polar capacitor C27 is in parallel with resistance R 39, the emitter of one termination triode BG10 of resistance R 40, ground connection after the other end is connected with adjustable resistance W15, the grid of field effect transistor N14 connects the intermediate contact of adjustable resistance W15, source electrode connects the base stage of triode BG11, drain electrode and the common port that connects triode BG10 emitter and triode BG11 collector after resistance R 41 is connected, ground connection after the emitter of triode BG11 is connected with resistance R 42, stabilivolt ZW6, polar capacitor C24 is all in parallel with adjustable resistance W15, and polar capacitor C25 is in parallel with resistance R 42.Auxiliary power circuit output+12V voltage is supplied with other circuit.
Embodiment 2: do not adopt transformer B1
The structure of embodiment 2 is substantially the same manner as Example 1, and difference is:
Main dc voltage and current forms circuit and is made up of triode interchange low side pressure regulation holding circuit, rectifier bridge ZL1, auto-adaptive filter circuit.
Secondary dc voltage and current forms circuit and exchanges high-end pressure regulation holding circuit by triode, rectifier bridge ZL2, fuse BX2, auto-adaptive filter circuit, secondary direct supply step-down self-adaptation successively regulating circuit is formed, wherein triode exchanges high-end pressure regulation holding circuit by triode GTR3, GTR4, BG6, BG7, adjustable resistance W4, resistance R 13-R17, capacitor C 8, diode D14-D21 and other element are formed, the collector of triode GTR3 and an end that meets civil power 220V after fuse BX2 connects, emitter connects the anode of diode D16, the negative electrode of diode D16 connects the negative electrode of diode D17, the anode of diode D17 connects the emitter of triode GTR4, the base stage of triode GTR3 connects the emitter of triode BG6, the base stage of triode GTR4 connects the emitter of triode BG7, resistance R 13 is connected in parallel between the collector of the collector of triode GTR3 and triode BG6, resistance R 14 is connected in parallel between the collector of the collector of triode GTR4 and triode BG7, the negative electrode of diode D14 connects the collector of triode GTR3, anode meets diode D16, the common port of D17 negative electrode and diode D15 anode, the negative electrode of diode D15 connects the collector of triode GTR4, triode BG6 base stage and triode BG7 base stage all connect the negative electrode of diode D18, the anode of diode D18 and resistance R 17, after connecting successively, adjustable resistance W4 connects the negative electrode of diode D20, the anode of diode D20 and the collector that meets triode GTR3 after resistance R 15 is connected, diode D19 and diode D18 reverse parallel connection, capacitor C 8 is connected in parallel between the common port of the anode of diode D18 and diode D20 negative electrode and diode D21 negative electrode, the common port of the anode of diode D21 and the end points E1 of collector that meets triode GTR4 after resistance R 16 is connected and triac device K1; Rectifier bridge ZL2 is made up of four diode D22-D25, auto-adaptive filter circuit is by field effect transistor N3, adjustable resistance W5, resistance R 11, capacitor C 9--C11 and other element are formed, the end points G1 of the input termination switch K1 of rectifier bridge ZL2, the end of another input termination civil power 220V, positive output end and resistance R 11, ground connection after adjustable resistance W5 connects successively, negative output terminal ground connection, the grid of field effect transistor N3 connects the intermediate contact of adjustable resistance W5, drain electrode connects the negative pole of polar capacitor C9, source ground, the positive pole of polar capacitor C9 connects the positive output end of rectifier bridge ZL2.
The contact A of K switch 4 connects the emitter of triode BG12, and contact B connects the collector of triode BG13, and contact C connects the drain electrode of field effect transistor N16.
It is D.C. regulated power supply that K switch 4 pushes contact A, and pushing contact B is dc current stabilized power supply, pushes contact C and K switch 2, is the direct current transformation Flow varying power supply when K3 closes.
In the circuit theory diagrams between the grid and source electrode of all field effect transistor, all be connected to the protection voltage stabilizing diode between the grid of the complex pipe that constitutes of all field effect transistor and triode and the emitter, the negative electrode of diode connects grid, and anode connects source electrode or emitter.
Claims (4)
1. large power DC voltage stabilization and current stabilization variable voltage and variable current power supply, it is characterized in that: comprise that main dc voltage and current forms circuit, secondary dc voltage and current forms circuit, the dc voltage and current combiner circuit, the electric current and voltage sample circuit, the sampled signal amplifying circuit, sampled signal control circuit and auxiliary direct current source circuit, wherein the dc voltage and current combiner circuit is by polar capacitor C6, C7, inductance L 6 and load R12 form, the positive pole of polar capacitor C6 connects the negative electrode of diode D26, minus earth, inductance L 6 is attempted by between the negative electrode of the negative electrode of diode D26 and diode D27, ground connection after the negative electrode of diode D27 is connected with load R12, polar capacitor C7 is in parallel with load R12;
The electric current and voltage sample circuit is by voltage sample circuit, current sampling circuit and environmental parameter sample circuit are formed, wherein voltage sample circuit is by field effect transistor N15, resistance R 55-R58, triode BG12, adjustable resistance W20, W21 forms, the negative electrode of the public terminating diode D26 of resistance R 55 1 ends and field effect transistor N15 drain electrode, ground connection after the other end is connected with adjustable resistance W20, the grid of field effect transistor N15 connects the intermediate contact of adjustable resistance W20, source electrode and resistance R 56, R57 series connection back ground connection, ground connection after the base stage of triode BG12 is connected with adjustable resistance W21, the intermediate contact connecting resistance R56 of adjustable resistance W21, the link of R57, the grounded collector of triode BG12, emitter with connect+12V voltage after resistance R 58 is connected; Current sampling circuit is made up of triode BG13, diode D13, resistance R 59, adjustable resistance W19, the negative electrode of the base stage of triode BG13 and diode D13 all connects field effect transistor N15 drain electrode, emitter connects the common port of diode D13 anode and polar capacitor C5 positive pole, ground connection after collector is connected with adjustable resistance W19, resistance R 59; The environmental parameter sample circuit is by field effect transistor N16, thermistor R43, resistance R 44-R46, adjustable resistance W16, W17, voltage stabilizing diode ZW7 forms, the drain electrode of field effect transistor N16 with connect+12V voltage after resistance R 46 is connected, one termination of adjustable resistance W16+12V voltage, the other end and thermistor R43, resistance R 44, adjustable resistance W17 series connection back ground connection, the plus earth of voltage stabilizing diode ZW7, the negative electrode of voltage stabilizing diode ZW7 connects the source electrode of field effect transistor N16, the grid of field effect transistor N16 meets thermistor R43, the public connecting end of resistance R 44, the source electrode of one termination field effect transistor N16 of resistance R 45, another termination+12V voltage;
The sampled signal amplifying circuit is by integrated circuit (IC) 1, IC2, resistance R 47-R50, voltage stabilizing diode ZW8, ZW9 and other element are formed, the contact D of the positive input terminal order cutter three throw switch K4 of integrated circuit (IC) 1, negative input end connects the negative electrode of voltage stabilizing diode ZW8, the plus earth of voltage stabilizing diode ZW8, resistance R 47 is attempted by+negative electrode of 12V voltage and voltage stabilizing diode ZW8 between, the negative input end of the output termination integrated circuit (IC) 2 of integrated circuit (IC) 1, the negative electrode of voltage stabilizing diode ZW9 connects the positive input terminal of integrated circuit (IC) 2, plus earth, resistance R 48 is attempted by+negative electrode of 12V voltage and voltage stabilizing diode ZW9 between, integrated circuit (IC) 1, the power end of IC2 all with after a resistance is connected connects+12V voltage, earth terminal ground connection;
The sampled signal control circuit is made up of photoelectrical coupler TDL1-TDL4, resistance R 18, R19, the anode of the photodiode of photoelectrical coupler TDL1 connects the output terminal of integrated circuit (IC) 1, ground connection after negative electrode is connected with resistance R 49, the grounded emitter of phototriode, collector and the grid that meets field effect transistor N4 after resistance R 18 is connected; The anode of the photodiode of photoelectrical coupler TDL2 connects the output terminal of integrated circuit (IC) 1 after K switch 3, negative electrode is through K switch 3 and ground connection after resistance R 49 is connected, the emitter of phototriode and the negative electrode that meets diode D3 after resistance R 3 is connected, collector connecting transistor BG1 base stage; The anode of the photodiode of photoelectrical coupler TDL3 connects the output terminal of integrated circuit (IC) 2, the negative electrode back ground connection of connecting with resistance R 50, and the emitter of phototriode connects the grid of field effect transistor N4, collector and the positive pole that meets polar capacitor C9 after resistance R 19 is connected; The anode of the photodiode of photoelectrical coupler TDL4 connects the output terminal of integrated circuit (IC) 2 after K switch 2, negative electrode is through K switch 2 and ground connection after resistance R 50 is connected, the emitter of phototriode and the negative electrode that meets diode D6 after resistance R 5 is connected, the collector of collector connecting transistor BG3;
Auxiliary power circuit is by the field effect transistor AC voltage adjusting circuit, transformer B2, rectifier bridge ZL3, fuse BX3, auto-adaptive filter circuit, accessory power supply step-down self-adaptation successively regulating circuit is formed, wherein the field effect transistor AC voltage adjusting circuit is by field effect transistor N9, N10, adjustable resistance W11, resistance R 32, diode D28-D33, inductance L 8 and other element are formed, the drain electrode of field effect transistor N9 and an end that meets civil power 220V after fuse BX3 connects, grid connects field effect transistor N10 grid, the drain electrode of the public termination field effect transistor N9 of diode D28 negative electrode and diode D32 anode, the drain electrode of the public termination field effect transistor N10 of diode D29 negative electrode and diode D33 anode, the common port of diode D28 anode and diode D29 anode and the common port that connects diode D30 negative electrode and diode D31 negative electrode after inductance L 8 is connected, the anode of diode D30 connects the source electrode of field effect transistor N9, the anode of diode D31 connects the source electrode of field effect transistor N10, the common port of diode D32 negative electrode and diode D33 negative electrode successively with resistance R 32, connect the common port of diode D30 negative electrode and diode D31 negative electrode after the adjustable resistance W11 series connection, the intermediate contact of adjustable resistance W11 meets field effect transistor N9, the grid of N10; Rectifier bridge ZL3 is made up of four diode D34--D37, the negative electrode of the terminating diode D29 of the primary coil L9 of transformer B2, the other end of another termination civil power 220V, two input ends of the two termination rectifier bridge ZL3 of secondary coil L10; Auto-adaptive filter circuit is by field effect transistor N11, triode BG8, adjustable resistance W12, resistance R 33a, R33, polar capacitor C18-C20, inductance L 11 is formed, the positive output end of rectifier bridge ZL3 and resistance R 33a, ground connection after adjustable resistance W12 connects successively, negative output terminal ground connection, the grid of field effect transistor N11 connects the intermediate contact of adjustable resistance W12, source electrode connects the base stage of triode BG8, drain electrode with connect the collector of triode BG8 and the common port of polar capacitor C20 negative pole after resistance R 33 is connected, the grounded emitter of triode BG8, polar capacitor C20, C19, the positive pole of C18 all connects the positive output end of rectifier bridge ZL3, inductance L 11 is in parallel with polar capacitor C19, the minus earth of polar capacitor C18; Accessory power supply step-down self-adaptation successively regulating circuit is by field effect transistor N12-N14, triode BG9-BG11, adjustable resistance W13-W15, resistance R 34-R42, capacitor C 21-C25, stabilivolt ZW4-ZW6 and other element are formed, the negative pole of one termination polar capacitor C19 of resistance R 34, ground connection after the other end is connected with adjustable resistance W13, the grid of field effect transistor N12 connects the intermediate contact of adjustable resistance W13, source electrode connects the base stage of triode BG9, drain electrode with connect the collector of triode BG9 and the common port of polar capacitor C19 negative pole after resistance R 35 is connected, ground connection after the emitter of triode BG9 is connected with resistance R 36, stabilivolt ZW4, polar capacitor C21 is all in parallel with adjustable resistance W13, polar capacitor C22 is in parallel with resistance R 36, the emitter of one termination triode BG9 of resistance R 37, ground connection after the other end is connected with adjustable resistance W14, the grid of field effect transistor N13 connects the intermediate contact of adjustable resistance W14, source electrode connects the base stage of triode BG10, drain electrode and the common port that connects triode BG9 emitter and triode BG10 collector after resistance R 38 is connected, ground connection after the emitter of triode BG10 is connected with resistance R 39, stabilivolt ZW5, polar capacitor C23 is all in parallel with adjustable resistance W14, polar capacitor C27 is in parallel with resistance R 39, the emitter of one termination triode BG10 of resistance R 40, ground connection after the other end is connected with adjustable resistance W15, the grid of field effect transistor N14 connects the intermediate contact of adjustable resistance W15, source electrode connects the base stage of triode BG11, drain electrode and the common port that connects triode BG10 emitter and triode BG11 collector after resistance R 41 is connected, ground connection after the emitter of triode BG11 is connected with resistance R 42, stabilivolt ZW6, polar capacitor C24 is all in parallel with adjustable resistance W15, and polar capacitor C25 is in parallel with resistance R 42;
The contact A of K switch 4 connects the emitter of triode BG12, contact B connects the collector of triode BG13, contact C connects the drain electrode of field effect transistor N16, it is D.C. regulated power supply that K switch 4 pushes contact A, pushing contact B is dc current stabilized power supply, pushes contact C and K switch 2, is the direct current transformation Flow varying power supply when K3 closes.
2. large power DC voltage stabilization and current stabilization variable voltage and variable current power supply as claimed in claim 1, it is characterized in that: main dc voltage and current forms circuit and exchanges low side pressure regulation holding circuit by triode, the primary coil L1 of transformer B1, secondary low-voltage coil L2, triac device K1, rectifier bridge ZL1, auto-adaptive filter circuit is formed, wherein triode exchanges low side pressure regulation holding circuit by triode GTR1, GTR2, BG1--BG3, adjustable resistance W1, resistance R 1--R6, capacitor C 1, diode D1-D8 and other element are formed, the collector of triode GTR1 and an end that meets civil power 220V after fuse BX1 connects, emitter connects the anode of diode D3, the negative electrode of diode D3 connects the negative electrode of diode D4, the anode of diode D4 connects the emitter of triode GTR2, the base stage of triode GTR1 connects the emitter of triode BG1, the base stage of triode GTR2 connects the emitter of triode BG2, resistance R 1 is connected in parallel between the collector of the collector of triode GTR1 and triode BG1, resistance R 2 is connected in parallel between the collector of the collector of triode GTR2 and triode BG2, the negative electrode of diode D1 connects the collector of triode GTR1, anode meets diode D3, the common port of D4 negative electrode and diode D2 anode, the negative electrode of diode D2 connects the collector of triode GTR2, triode BG1 base stage and triode BG2 base stage all connect the negative electrode of diode D5, the anode of diode D5 and the emitter that meets triode BG3 after resistance R 4 is connected, the base stage of triode BG3 and resistance R 6, after connecting successively, adjustable resistance W1 connects the negative electrode of diode D7, the anode of diode D7 connects the collector of triode GTR1, diode D6 and diode D5 reverse parallel connection, capacitor C 1 is connected in parallel on anode and the triode BG3 collector of diode D5, between the common port of diode D7 negative electrode and diode D8 negative electrode, the anode of diode D8 meets the collector of triode GTR2 and the end points E2 of triac device K1, the common port of E3; Rectifier bridge ZL1 is made up of four diode D9--D12, the end points E3 of K switch 1, G3 short circuit, the end points F3 of the termination K switch 1 of the primary coil L1 of transformer B1, the end points F2 of the termination K switch 1 of secondary low-voltage coil L2, the input end of the other end of the other end of primary coil L1, secondary low-voltage coil L2 and rectifier bridge ZL1 all connects the other end of civil power 220V, and the end points G2 of K switch 1 connects another input end of rectifier bridge ZL1; Auto-adaptive filter circuit is by field effect transistor N1, N2, triode BG4, BG5, adjustable resistance W2, W3, resistance R 7-R10, capacitor C 2-C5, inductance L 4, L5 and other element are formed, the positive output termination polar capacitor C2 positive pole of rectifier bridge ZL1 and the common port of resistance R 7 one ends, negative output terminal ground connection, ground connection after the other end of resistance R 7 is connected with adjustable resistance W2, the grid of field effect transistor N1 connects the intermediate contact of adjustable resistance W2, source electrode connects the base stage of triode BG4, drain electrode with connect the collector of triode BG4 and the common port of polar capacitor C3 negative pole after resistance R 8 is connected, the grounded emitter of triode BG4, the negative pole of polar capacitor C2 meets polar capacitor C3, the common port of C4 positive pole and resistance R 9 one ends, inductance L 4 is in parallel with polar capacitor C2, ground connection after the other end of resistance R 9 is connected with adjustable resistance W3, the grid of field effect transistor N2 connects the intermediate contact of adjustable resistance W3, source electrode connects the base stage of triode BG5, drain electrode with connect the collector of triode BG5 and the common port of polar capacitor C5 negative pole after resistance R 10 is connected, the grounded emitter of triode BG5, the negative pole of polar capacitor C4 connects the positive pole of polar capacitor C5, and inductance L 5 is in parallel with polar capacitor C4;
Secondary dc voltage and current forms circuit and exchanges low side pressure regulation holding circuit by triode, the primary coil L1 of transformer B1, secondary high-tension coil L3, triac device K1, rectifier bridge ZL2, fuse BX1, auto-adaptive filter circuit, secondary direct supply step-down self-adaptation successively regulating circuit is formed, wherein triode exchanges low side pressure regulation holding circuit by triode GTR1, GTR2, BG1--BG3, adjustable resistance W1, resistance R 1--R6, capacitor C 1, diode D1-D8 and other element are formed, rectifier bridge ZL2 is made up of four diode D22-D25, auto-adaptive filter circuit is by field effect transistor N3, adjustable resistance W5, resistance R 11, capacitor C 9--C11 and other element are formed, the end points G1 of the input termination switch K1 of rectifier bridge ZL2, the common port of another input termination primary coil L1 and secondary low-voltage coil L3, positive output end and resistance R 11, ground connection after adjustable resistance W5 connects successively, negative output terminal ground connection, the grid of field effect transistor N3 connects the intermediate contact of adjustable resistance W5, drain electrode connects the negative pole of polar capacitor C9, source ground, the positive pole of polar capacitor C9 connects the positive output end of rectifier bridge ZL2; Secondary direct supply step-down self-adaptation successively regulating circuit is by field effect transistor N4-N8, triode GTR5-GTR9, adjustable resistance W6--W10, resistance R 20-R31, capacitor C 11--C17, diode D26, D27, stabilivolt ZW1-ZW3 and other element are formed, the positive output end of the public termination rectifier bridge ZL2 of one end of resistance R 20 and polar capacitor C10 positive pole, ground connection after the other end is connected with adjustable resistance W6, the grid of field effect transistor N4 connects the intermediate contact of adjustable resistance W6, source electrode connects the base stage of triode GTR5, drain electrode with connect the collector of triode GTR5 and the common port of polar capacitor C10 negative pole after resistance R 21 is connected, ground connection after the emitter of triode GTR5 is connected with resistance R 22, inductance L 7 is in parallel with polar capacitor C10, polar capacitor C12 is in parallel with resistance R 22, the emitter of one termination triode GTR5 of resistance R 23, ground connection after the other end is connected with adjustable resistance W7, the grid of field effect transistor N5 connects the intermediate contact of adjustable resistance W7, source electrode connects the base stage of triode GTR6, drain electrode and the common port that connects triode GTR5 emitter and triode GTR6 collector after resistance R 24 is connected, ground connection after the emitter of triode GTR6 is connected with resistance R 25, stabilivolt ZW1, polar capacitor C13 is all in parallel with adjustable resistance W7, polar capacitor C14 is in parallel with resistance R 25, the emitter of one termination triode GTR6 of resistance R 26, ground connection after the other end is connected with adjustable resistance W8, the grid of field effect transistor N6 connects the intermediate contact of adjustable resistance W8, source electrode connects the base stage of triode GTR7, drain electrode with connect the emitter of triode GTR6 and the common port of triode GTR7 collector after resistance R 27 is connected, ground connection after the emitter of triode GTR7 is connected with resistance R 28, stabilivolt ZW2, polar capacitor C15 is all in parallel with adjustable resistance W8, polar capacitor C16 is in parallel with resistance R 28, the emitter of one termination triode GTR7 of resistance R 29, ground connection after the other end is connected with adjustable resistance W9, the grid of field effect transistor N7 connects the intermediate contact of adjustable resistance W9, source electrode connects the base stage of triode GTR8, drain electrode and the common port that connects triode GTR7 emitter and triode GTR8 collector after resistance R 30 is connected, the emitter of triode GTR8 connects the anode of diode D26, stabilivolt ZW3, polar capacitor C17 is all in parallel with adjustable resistance W9, the grid of field effect transistor N8 connects the intermediate contact of adjustable resistance W10, source electrode connects the base stage of triode GTR9, drain electrode and the common port that connects triode GTR8 collector and triode GTR9 collector after resistance R 31 is connected, the emitter of triode GTR9 connects the anode of diode D27.
3. large power DC voltage stabilization and current stabilization variable voltage and variable current power supply as claimed in claim 1, it is characterized in that: main dc voltage and current forms circuit and exchanges low side pressure regulation holding circuit by triode, rectifier bridge ZL1, auto-adaptive filter circuit is formed, wherein triode exchanges low side pressure regulation holding circuit by triode GTR1, GTR2, BG1--BG3, adjustable resistance W1, resistance R 1--R6, capacitor C 1, diode D1-D8 and other element are formed, the collector of triode GTR1 and an end that meets civil power 220V after fuse BX1 connects, emitter connects the anode of diode D3, the negative electrode of diode D3 connects the negative electrode of diode D4, the anode of diode D4 connects the emitter of triode GTR2, the base stage of triode GTR1 connects the emitter of triode BG1, the base stage of triode GTR2 connects the emitter of triode BG2, resistance R 1 is connected in parallel between the collector of the collector of triode GTR1 and triode BG1, resistance R 2 is connected in parallel between the collector of the collector of triode GTR2 and triode BG2, the negative electrode of diode D1 connects the collector of triode GTR1, anode meets diode D3, the common port of D4 negative electrode and diode D2 anode, the negative electrode of diode D2 connects the collector of triode GTR2, triode BG1 base stage and triode BG2 base stage all connect the negative electrode of diode D5, the anode of diode D5 and the emitter that meets triode BG3 after resistance R 4 is connected, the base stage of triode BG3 and resistance R 6, after connecting successively, adjustable resistance W1 connects the negative electrode of diode D7, the anode of diode D7 connects the collector of triode GTR1, diode D6 and diode D5 reverse parallel connection, capacitor C 1 is connected in parallel on anode and the triode BG3 collector of diode D5, between the common port of diode D7 negative electrode and diode D8 negative electrode, the anode of diode D8 meets the collector of triode GTR2 and the end points E2 of triac device K1, the common port of E3; Rectifier bridge ZL1 is made up of four diode D9--D12, the end points E3 of K switch 1, G3 short circuit, and the input end of rectifier bridge ZL1 all connects the other end of civil power 220V, and the end points G2 of K switch 1 connects another input end of rectifier bridge ZL1; Auto-adaptive filter circuit is by field effect transistor N1, N2, triode BG4, BG5, adjustable resistance W2, W3, resistance R 7-R10, capacitor C 2-C5, inductance L 4, L5 and other element are formed, the positive output termination polar capacitor C2 positive pole of rectifier bridge ZL1 and the common port of resistance R 7 one ends, negative output terminal ground connection, ground connection after the other end of resistance R 7 is connected with adjustable resistance W2, the grid of field effect transistor N1 connects the intermediate contact of adjustable resistance W2, source electrode connects the base stage of triode BG4, drain electrode with connect the collector of triode BG4 and the common port of polar capacitor C3 negative pole after resistance R 8 is connected, the grounded emitter of triode BG4, the negative pole of polar capacitor C2 meets polar capacitor C3, the common port of C4 positive pole and resistance R 9 one ends, inductance L 4 is in parallel with polar capacitor C2, ground connection after the other end of resistance R 9 is connected with adjustable resistance W3, the grid of field effect transistor N2 connects the intermediate contact of adjustable resistance W3, source electrode connects the base stage of triode BG5, drain electrode with connect the collector of triode BG5 and the common port of polar capacitor C5 negative pole after resistance R 10 is connected, the grounded emitter of triode BG5, the negative pole of polar capacitor C4 connects the positive pole of polar capacitor C5, and inductance L 5 is in parallel with polar capacitor C4;
Secondary dc voltage and current forms circuit and exchanges high-end pressure regulation holding circuit by triode, rectifier bridge ZL2, fuse BX2, auto-adaptive filter circuit, secondary direct supply step-down self-adaptation successively regulating circuit is formed, wherein triode exchanges high-end pressure regulation holding circuit by triode GTR3, GTR4, BG6, BG7, adjustable resistance W4, resistance R 13-R17, capacitor C 8, diode D14-D21 and other element are formed, the collector of triode GTR3 and an end that meets civil power 220V after fuse BX2 connects, emitter connects the anode of diode D16, the negative electrode of diode D16 connects the negative electrode of diode D17, the anode of diode D17 connects the emitter of triode GTR4, the base stage of triode GTR3 connects the emitter of triode BG6, the base stage of triode GTR4 connects the emitter of triode BG7, resistance R 13 is connected in parallel between the collector of the collector of triode GTR3 and triode BG6, resistance R 14 is connected in parallel between the collector of the collector of triode GTR4 and triode BG7, the negative electrode of diode D14 connects the collector of triode GTR3, anode meets diode D16, the common port of D17 negative electrode and diode D15 anode, the negative electrode of diode D15 connects the collector of triode GTR4, triode BG6 base stage and triode BG7 base stage all connect the negative electrode of diode D18, the anode of diode D18 and resistance R 17, after connecting successively, adjustable resistance W4 connects the negative electrode of diode D20, the anode of diode D20 and the collector that meets triode GTR3 after resistance R 15 is connected, diode D19 and diode D18 reverse parallel connection, capacitor C 8 is connected in parallel between the common port of the anode of diode D18 and diode D20 negative electrode and diode D21 negative electrode, the common port of the anode of diode D21 and the end points E1 of collector that meets triode GTR4 after resistance R 16 is connected and triac device K1; Rectifier bridge ZL2 is made up of four diode D22-D25, auto-adaptive filter circuit is by field effect transistor N3, adjustable resistance W5, resistance R 11, capacitor C 9--C11 and other element are formed, the end points G1 of the input termination switch K1 of rectifier bridge ZL2, the end of another input termination civil power 220V, positive output end and resistance R 11, ground connection after adjustable resistance W5 connects successively, negative output terminal ground connection, the grid of field effect transistor N3 connects the intermediate contact of adjustable resistance W5, drain electrode connects the negative pole of polar capacitor C9, source ground, the positive pole of polar capacitor C9 connects the positive output end of rectifier bridge ZL2; Secondary direct supply step-down self-adaptation successively regulating circuit is by field effect transistor N4-N8, triode GTR5-GTR9, adjustable resistance W6--W10, resistance R 20-R31, capacitor C 11--C17, diode D26, D27, stabilivolt ZW1-ZW3 and other element are formed, the positive output end of the public termination rectifier bridge ZL2 of one end of resistance R 20 and polar capacitor C10 positive pole, ground connection after the other end is connected with adjustable resistance W6, the grid of field effect transistor N4 connects the intermediate contact of adjustable resistance W6, source electrode connects the base stage of triode GTR5, drain electrode with connect the collector of triode GTR5 and the common port of polar capacitor C10 negative pole after resistance R 21 is connected, ground connection after the emitter of triode GTR5 is connected with resistance R 22, inductance L 7 is in parallel with polar capacitor C10, polar capacitor C12 is in parallel with resistance R 22, the emitter of one termination triode GTR5 of resistance R 23, ground connection after the other end is connected with adjustable resistance W7, the grid of field effect transistor N5 connects the intermediate contact of adjustable resistance W7, source electrode connects the base stage of triode GTR6, drain electrode and the common port that connects triode GTR5 emitter and triode GTR6 collector after resistance R 24 is connected, ground connection after the emitter of triode GTR6 is connected with resistance R 25, stabilivolt ZW1, polar capacitor C13 is all in parallel with adjustable resistance W7, polar capacitor C14 is in parallel with resistance R 25, the emitter of one termination triode GTR6 of resistance R 26, ground connection after the other end is connected with adjustable resistance W8, the grid of field effect transistor N6 connects the intermediate contact of adjustable resistance W8, source electrode connects the base stage of triode GTR7, drain electrode with connect the emitter of triode GTR6 and the common port of triode GTR7 collector after resistance R 27 is connected, ground connection after the emitter of triode GTR7 is connected with resistance R 28, stabilivolt ZW2, polar capacitor C15 is all in parallel with adjustable resistance W8, polar capacitor C16 is in parallel with resistance R 28, the emitter of one termination triode GTR7 of resistance R 29, ground connection after the other end is connected with adjustable resistance W9, the grid of field effect transistor N7 connects the intermediate contact of adjustable resistance W9, source electrode connects the base stage of triode GTR8, drain electrode and the common port that connects triode GTR7 emitter and triode GTR8 collector after resistance R 30 is connected, the emitter of triode GTR8 connects the anode of diode D26, stabilivolt ZW3, polar capacitor C17 is all in parallel with adjustable resistance W9, the grid of field effect transistor N8 connects the intermediate contact of adjustable resistance W10, source electrode connects the base stage of triode GTR9, drain electrode and the common port that connects triode GTR8 collector and triode GTR9 collector after resistance R 31 is connected, the emitter of triode GTR9 connects the anode of diode D27.
4. large power DC voltage stabilization and current stabilization variable voltage and variable current power supply as claimed in claim 1, it is characterized in that: also comprise the over-voltage over-current protection warning circuit, the over-voltage over-current protection warning circuit is by photoelectrical coupler TDL5, TDL6, field effect transistor N17, triode BG14, diode D38, D39, resistance R 51-R54, adjustable resistance W18, polar capacitor C26, LED, loudspeaker SPK forms, the anode of the photodiode of photoelectrical coupler TDL5 connects+12V voltage, negative electrode connects triode BG14 base stage, the emitter of phototriode connects the negative electrode of diode D3, collector connecting transistor BG1 base stage; The anode of the photodiode of photoelectrical coupler TDL6 connects+12V voltage, and negative electrode connects triode BG14 base stage, and the emitter of phototriode connects the negative electrode of diode D16, collector connecting transistor BG6 base stage; The anode of diode D38 connects the output terminal of integrated circuit (IC) 1, negative electrode connects the common port of field effect transistor N17 grid and polar capacitor C26 positive pole, ground connection after the source electrode of field effect transistor N17 is connected with resistance R 52, drain electrode connects the base stage of triode BG14, the emitter of triode BG14 with connect+12V voltage after resistance R 54 is connected, the anode of collector sending and receiving optical diode LED, ground connection after the negative electrode of LED is connected with loudspeaker SPK, the anode of diode D39 connects the source electrode of field effect transistor N17, negative electrode with connect+12V voltage after resistance R 53 is connected, adjustable resistance W18 is connected in parallel between the negative electrode and ground of diode D39, the minus earth of polar capacitor C26, resistance R 51 is in parallel with polar capacitor C26.
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| CNB2005100271729A CN100385362C (en) | 2005-06-21 | 2005-06-21 | Large power DC voltage stabilization and current stabilization variable voltage and variable current power supply |
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| CNB2005100271729A CN100385362C (en) | 2005-06-21 | 2005-06-21 | Large power DC voltage stabilization and current stabilization variable voltage and variable current power supply |
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| CN104767367B (en) * | 2015-03-25 | 2017-10-10 | 青岛歌尔声学科技有限公司 | A kind of voltage compensating circuit and the power-supply system with the circuit |
| CN109739289B (en) * | 2019-02-21 | 2023-12-05 | 福建星云电子股份有限公司 | Voltage and current stabilizing bipolar circuit for shared MOS tube |
| CN112542035B (en) * | 2020-12-18 | 2022-07-05 | 无锡蓝天电子股份有限公司 | Fire alarm device capable of automatically finishing bus voltage |
| CN114081282A (en) * | 2021-01-28 | 2022-02-25 | 章祖文 | Improved manufacturing method of QRS type rotatable heated small round table on large round table |
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