CN104600996A - High-voltage DC voltage-stabilized circuit - Google Patents
High-voltage DC voltage-stabilized circuit Download PDFInfo
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- CN104600996A CN104600996A CN201510020822.0A CN201510020822A CN104600996A CN 104600996 A CN104600996 A CN 104600996A CN 201510020822 A CN201510020822 A CN 201510020822A CN 104600996 A CN104600996 A CN 104600996A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
Abstract
The invention provides a high-voltage DC voltage-stabilized circuit. The high-voltage DC voltage-stabilized circuit comprises an oscillating circuit, a rectifier filter circuit, an adjusting tube, a comparing amplifier circuit, a voltage sampling circuit, a low-voltage input end Hvin and a high-voltage output end Hvout; the low-voltage input Hvin is respectively connected to the oscillating circuit and the adjusting tube; the oscillating circuit is connected with the rectifier filter circuit; the rectifier filter circuit is connected to the high-voltage output end Hvout; the adjusting pipe is connected to the comparing amplifier circuit which is connected to the voltage sampling circuit; the voltage sampling circuit is connected to the high-voltage output end Hvout. With the adoption of the high-voltage DC voltage-stabilized circuit, the purposes of decreasing power consumption and increasing overall efficiency is achieved.
Description
Technical field
The present invention relates to a kind of voltage stabilizing circuit, refer in particular to a kind of high voltage direct current voltage stabilizing circuit.
Background technology
Photomultiplier (PMT) is often used in the detection of the faint optical signal of modern scientific research, especially the application on scintillation detector is indispensable especially, the power consumption existed for current various portable radioactive physical prospecting instrument is high, inefficient problem, cause wanting long term frequent to change battery or charging problems, and wherein most reason is the high-voltage power module of PMT, PMT is to the High voltage output of the power reguirements high stable of power supply, low-ripple coefficient, the power consumption of itself is not high, namely output current is very little, so commonly use series voltage stabilizing adjustment mode to the Switching Power Supply replacing cost higher in the occasion of low-power consumption, one patent of invention (CN201110451593.X) its voltage regulation way is the series connection adjustment voltage regulation way of supply voltage adjusting type, it is larger to there is Correctional tube power consumption in this mode, efficiency is not high.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of high voltage direct current voltage stabilizing circuit, reaches the object reducing power consumption and improve whole efficiency.
The present invention is achieved in that a kind of high voltage direct current voltage stabilizing circuit, comprises oscillating circuit, current rectifying and wave filtering circuit, Correctional tube, compares amplifying circuit, voltage sample circuit, low pressure input Hvin and high-voltage output end Hvout; Described low pressure input Hvin is connected to described oscillating circuit and Correctional tube respectively, described oscillating circuit is connected to described current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit is connected to described high-voltage output end Hvout, described Correctional tube is connected to and describedly compares amplifying circuit, the described amplifying circuit that compares is connected to described voltage sample circuit, and described voltage sample circuit is connected to described high-voltage output end Hvout.
Further, described Correctional tube is NMOS tube, and the source electrode of described NMOS tube is connected to low pressure input Hvin, and the drain electrode of described NMOS tube is connected to described oscillating circuit, and the grid of described NMOS tube is connected to and describedly compares amplifying circuit.
Further, described oscillating circuit comprises an inductance L 1, transformer T1, transistor Q2, transistor Q3, resistance R5, resistance R6, electric capacity C12, described transformer T1 is provided with primary coil, feedback coil and secondary coil, described primary coil is provided with a centre cap, described centre cap is connected to described low pressure input Hvin by described electric capacity L1, the secondary coil of described voltage device T1 is connected to described current rectifying and wave filtering circuit, the primary coil of described transformer T1 is connected to the collector electrode of described transistor Q2 and the collector electrode of transistor Q3 respectively, electric capacity C12 is connected between the collector electrode of described transistor Q2 and the collector electrode of transistor Q3, the base stage of described transistor Q2 is connected to described Correctional tube by resistance R5, the base stage of described transistor Q3 is connected to described Correctional tube by resistance R6, the emitter of described transistor Q2 and the grounded emitter of transistor Q3, the base stage of described transistor Q2 is connected to one end of the feedback coil of described transformer T1, the base stage of described transistor Q3 is connected to the other end of the feedback coil of described transformer T1.
Further, the described amplifying circuit that compares comprises operational amplifier U1A, operational amplifier U1B, electric capacity C13, electric capacity C14, electric capacity C15, electric capacity C16, electric capacity C17, resistance R4, resistance R7, resistance R10, resistance R11 and diode D8, the output of described operational amplifier U1A is connected to Correctional tube, the positive power source terminal of described operational amplifier U1A is connected to positive supply, and be connected with the one end after described electric capacity C14 and electric capacity C13 parallel connection, other end ground connection after described electric capacity C14 and electric capacity C13 parallel connection, the negative power end of described operational amplifier U1A is connected to negative supply, and be connected with one end after described electric capacity C15 and electric capacity C16 parallel connection, other end ground connection after described electric capacity C15 and electric capacity C16 parallel connection, the positive input of described operational amplifier U1A is connected to positive supply by resistance R10, the positive pole of described diode D8 is connected between described operational amplifier U1A normal phase input end and resistance R10, the minus earth of described diode D8, described electric capacity C17 parallel connection and described diode D8 two ends, the reverse input end of described operational amplifier U1A is connected to the output of operational amplifier U1B, the reverse input end of described operational amplifier U1B is connected to described voltage sample circuit by resistance R7, the positive input of described operational amplifier U1B is by resistance R11 ground connection, the output of described resistance R4 parallel connection and described operational amplifier U1B and positive input.
Further, described voltage sample circuit comprises resistance R2, resistance R3, resistance R9, resistance RT1 and electric capacity C11, after described resistance R2 is in parallel with described electric capacity C11, one end is connected to high-voltage output end Hvout, the other end is connected to one end of described resistance R3, one end of described resistance R9 is by resistance RT1 ground connection, and the other end of described resistance R3 describedly compares amplifying circuit with being connected to after the other end parallel connection of resistance R9.
Further, described resistance RT1 is rheostat.
Further, also comprise an electric capacity C10, electric capacity C4 and diode D7, one end ground connection after described electric capacity C10, electric capacity C4 and diode D7 parallel connection, the other end is connected to low pressure input Hvin.
The invention has the advantages that: high voltage direct current voltage stabilizing circuit of the present invention, low in energy consumption, efficiency is high, and output ripple is little, can meet low-voltage input, the requirement that high voltage exports, can produce good economic benefit.
Accompanying drawing explanation
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the schematic diagram of high voltage direct current voltage stabilizing circuit of the present invention.
Embodiment
Refer to shown in Fig. 1, high voltage direct current voltage stabilizing circuit of the present invention, comprises oscillating circuit, current rectifying and wave filtering circuit, Correctional tube, compares amplifying circuit, voltage sample circuit, low pressure input Hvin and high-voltage output end Hvout, described low pressure input Hvin is connected to described oscillating circuit and Correctional tube respectively, described oscillating circuit is connected to described current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit is connected to described high-voltage output end Hvout, described Correctional tube is connected to and describedly compares amplifying circuit, the described amplifying circuit that compares is connected to described voltage sample circuit, described voltage sample circuit is connected to described high-voltage output end Hvout, described Correctional tube is NMOS tube, the source electrode of described NMOS tube is connected to low pressure input Hvin, the drain electrode of described NMOS tube is connected to described oscillating circuit, the grid of described NMOS tube is connected to and describedly compares amplifying circuit.
In high voltage direct current voltage stabilizing circuit of the present invention, oscillating circuit comprises an inductance L 1, transformer T1, transistor Q2, transistor Q3, resistance R5, resistance R6, electric capacity C12, described transformer T1 is provided with primary coil, feedback coil and secondary coil, described primary coil is provided with a centre cap, described centre cap is connected to described low pressure input Hvin by described electric capacity L1, the secondary coil of described voltage device T1 is connected to described current rectifying and wave filtering circuit, the primary coil of described transformer T1 is connected to the collector electrode of described transistor Q2 and the collector electrode of transistor Q3 respectively, electric capacity C12 is connected between the collector electrode of described transistor Q2 and the collector electrode of transistor Q3, the base stage of described transistor Q2 is connected to described Correctional tube by resistance R5, the base stage of described transistor Q3 is connected to described Correctional tube by resistance R6, the emitter of described transistor Q2 and the grounded emitter of transistor Q3, the base stage of described transistor Q2 is connected to one end of the feedback coil of described transformer T1, the base stage of described transistor Q3 is connected to the other end of the feedback coil of described transformer T1.
Compare amplifying circuit in high voltage direct current voltage stabilizing circuit of the present invention and comprise operational amplifier U1A, operational amplifier U1B, electric capacity C13, electric capacity C14, electric capacity C15, electric capacity C16, electric capacity C17, resistance R4, resistance R7, resistance R10, resistance R11 and diode D8, the output of described operational amplifier U1A is connected to Correctional tube, the positive power source terminal of described operational amplifier U1A is connected to positive supply, and be connected with the one end after described electric capacity C14 and electric capacity C13 parallel connection, other end ground connection after described electric capacity C14 and electric capacity C13 parallel connection, the negative power end of described operational amplifier U1A is connected to negative supply, and be connected with one end after described electric capacity C15 and electric capacity C16 parallel connection, other end ground connection after described electric capacity C15 and electric capacity C16 parallel connection, the positive input of described operational amplifier U1A is connected to positive supply by resistance R10, the positive pole of described diode D8 is connected between described operational amplifier U1A normal phase input end and resistance R10, the minus earth of described diode D8, described electric capacity C17 parallel connection and described diode D8 two ends, the reverse input end of described operational amplifier U1A is connected to the output of operational amplifier U1B, the reverse input end of described operational amplifier U1B is connected to described voltage sample circuit by resistance R7, the positive input of described operational amplifier U1B is by resistance R11 ground connection, the output of described resistance R4 parallel connection and described operational amplifier U1B and positive input.
In high voltage direct current voltage stabilizing circuit of the present invention, voltage sample circuit comprises resistance R2, resistance R3, resistance R9, resistance RT1 and electric capacity C11, after described resistance R2 is in parallel with described electric capacity C11, one end is connected to high-voltage output end Hvout, the other end is connected to one end of described resistance R3, one end of described resistance R9 is by resistance RT1 ground connection, the other end of described resistance R3 describedly compares amplifying circuit with being connected to after the other end parallel connection of resistance R9, and described resistance RT1 is rheostat.
The present invention also comprises an electric capacity C10, electric capacity C4 and diode D7, and one end ground connection after described electric capacity C10, electric capacity C4 and diode D7 parallel connection, the other end is connected to low pressure input Hvin.
As shown in Figure 1, Correctional tube controls the oscillation amplitude of base current in oscillating circuit, and this connected mode Correctional tube power consumption reduces greatly, and whole efficiency is also improved, when adopting voltage-multiplying circuit can meet low-voltage input, positive high voltage is had to export or negative high voltage output.The present invention can use on gun-type gamma instrument, and the technical indicator of power supply is input voltage 3V, and output voltage-600 is adjustable to-1200V, and output current 200 μ A, ripple peak-to-peak value is less than 1V.Implementing circuit figure of the present invention as shown in Figure 1, when energized, because output end voltage is zero, amplifier exports high potential, Q3 conducting, by base resistance R6, transistor Q1, Q2 obtains required base current forward bias conducting, because the characteristic of two transistors can not be completely the same, the electric current flowing through two transistors is inconsistent, armature winding N (2-3) will determine by flowing through transistor current great mono-tunnel with the magnetic flux size and Orientation of N (3-4), the change of magnetic flux feedback winding N (1-5) is also produced base terminal voltage that corresponding induced electromotive force carrys out flyback transistor, make transistor one after the other encourage and in output output AC signal, AC signal obtains negative high voltage signal through voltage multiplying rectifier, filtering is carried out through the filter circuit of a RCLC after rectification, resistance R2, R3, C11, RT1 forms adjustable sample circuit, C17 is that a shunt capacitance is every falling direct current signal, permission AC ripple is passed through, can at the upper superposition ripple signal of-FB (i.e. negative voltage), this ripple compensation can make output ripple greatly reduce, output voltage continuously adjustabe in a wider scope can be made by regulating RT1,-FB signal through one in proportion negater circuit become+FB (i.e. positive voltage) and reference voltage and compare and enlarge, error signal after amplification enters Q1, Q2 is regulated by regulating the grid voltage of Q1, the base current of Q3, thus regulate the amplitude of vibration, oscillation amplitude is relevant with input voltage and power output.In oscillating circuit, the primary coil of resonant capacitance C12 and transformer T1 forms frequency-selecting resonant circuit, makes circuit according to certain hunting of frequency, can select required frequency of oscillation by changing capacitance.Inductance L 1 provides a higher AC impedance for circuit and suppresses high frequency spurs, maximum current i=Vcc/j ω L, wherein ω is hunting angle frequency, and calculate the inductive primary that L will consider transformer, the sensibility reciprocal of inductance L 1 is chosen and will be determined according to the size of load current.D7 is fly-wheel diode is supper-fast recovery diode, makes after a loss of power, plays afterflow effect, with the not sensed voltage breakdown of protection component.Also the amplifying power of triode will be considered equally when selecting base resistance, and output current size.Will consider the withstand voltage of electric capacity in the circuit of multiplication of voltage, afterbody capacitance suitably strengthens, and diode D1, D2, D3, D4, D5, D6 use fast recovery diode.By less ripple high direct voltage can be obtained after RCLC filtering, inductance L 2 is equally here primarily of suppression high frequency ripple signal, for out-put supply provides more stable output current, ripple compensation mode is adopted to carry out voltage sample, make output ripple less, in relatively amplifying circuit, voltage-stabiliser tube (i.e. diode D8) will add that tantalum electric capacity (i.e. electric capacity C17) carries out filtering process, a reference source is stablized, operational amplifier U1B amplifies error and adjusts output voltage by metal-oxide-semiconductor, to ensure output voltage stabilization.
The detecting module that the present invention is mainly gun-type gamma instrument provides high-voltage dc stabilization pressuring power, the combination of NaI scintillator and photomultiplier is utilized in detecting module, NaI scintillator under gamma ray effect is luminous, photomultiplier carries out opto-electronic conversion and electron multiplication output electric pulse signal, in dynode system, need high voltage supply.
The invention has the advantages that: high voltage direct current voltage stabilizing circuit of the present invention, low in energy consumption, efficiency is high, and output ripple is little, can meet low-voltage input, the requirement that high voltage exports, can produce good economic benefit.
Although the foregoing describe the specific embodiment of the present invention; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present invention; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present invention and change, should be encompassed in scope that claim of the present invention protects.
Claims (7)
1. a high voltage direct current voltage stabilizing circuit, is characterized in that: comprise oscillating circuit, current rectifying and wave filtering circuit, Correctional tube, compares amplifying circuit, voltage sample circuit, low pressure input Hvin and high-voltage output end Hvout; Described low pressure input Hvin is connected to described oscillating circuit and Correctional tube respectively, described oscillating circuit is connected to described current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit is connected to described high-voltage output end Hvout, described Correctional tube is connected to and describedly compares amplifying circuit, the described amplifying circuit that compares is connected to described voltage sample circuit, and described voltage sample circuit is connected to described high-voltage output end Hvout.
2. a kind of high voltage direct current voltage stabilizing circuit as claimed in claim 1, it is characterized in that: described Correctional tube is NMOS tube, the source electrode of described NMOS tube is connected to low pressure input Hvin, the drain electrode of described NMOS tube is connected to described oscillating circuit, and the grid of described NMOS tube is connected to and describedly compares amplifying circuit.
3. a kind of high voltage direct current voltage stabilizing circuit as claimed in claim 1, it is characterized in that: described oscillating circuit comprises an inductance L 1, transformer T1, transistor Q2, transistor Q3, resistance R5, resistance R6, electric capacity C12, described transformer T1 is provided with primary coil, feedback coil and secondary coil, described primary coil is provided with a centre cap, described centre cap is connected to described low pressure input Hvin by described electric capacity L1, the secondary coil of described voltage device T1 is connected to described current rectifying and wave filtering circuit, the primary coil of described transformer T1 is connected to the collector electrode of described transistor Q2 and the collector electrode of transistor Q3 respectively, electric capacity C12 is connected between the collector electrode of described transistor Q2 and the collector electrode of transistor Q3, the base stage of described transistor Q2 is connected to described Correctional tube by resistance R5, the base stage of described transistor Q3 is connected to described Correctional tube by resistance R6, the emitter of described transistor Q2 and the grounded emitter of transistor Q3, the base stage of described transistor Q2 is connected to one end of the feedback coil of described transformer T1, the base stage of described transistor Q3 is connected to the other end of the feedback coil of described transformer T1.
4. a kind of high voltage direct current voltage stabilizing circuit as claimed in claim 1, it is characterized in that: the described amplifying circuit that compares comprises operational amplifier U1A, operational amplifier U1B, electric capacity C13, electric capacity C14, electric capacity C15, electric capacity C16, electric capacity C17, resistance R4, resistance R7, resistance R10, resistance R11 and diode D8, the output of described operational amplifier U1A is connected to Correctional tube, the positive power source terminal of described operational amplifier U1A is connected to positive supply, and be connected with the one end after described electric capacity C14 and electric capacity C13 parallel connection, other end ground connection after described electric capacity C14 and electric capacity C13 parallel connection, the negative power end of described operational amplifier U1A is connected to negative supply, and be connected with one end after described electric capacity C15 and electric capacity C16 parallel connection, other end ground connection after described electric capacity C15 and electric capacity C16 parallel connection, the positive input of described operational amplifier U1A is connected to positive supply by resistance R10, the positive pole of described diode D8 is connected between described operational amplifier U1A normal phase input end and resistance R10, the minus earth of described diode D8, described electric capacity C17 parallel connection and described diode D8 two ends, the reverse input end of described operational amplifier U1A is connected to the output of operational amplifier U1B, the reverse input end of described operational amplifier U1B is connected to described voltage sample circuit by resistance R7, the positive input of described operational amplifier U1B is by resistance R11 ground connection, the output of described resistance R4 parallel connection and described operational amplifier U1B and positive input.
5. a kind of high voltage direct current voltage stabilizing circuit as claimed in claim 1, it is characterized in that: described voltage sample circuit comprises resistance R2, resistance R3, resistance R9, resistance RT1 and electric capacity C11, after described resistance R2 is in parallel with described electric capacity C11, one end is connected to high-voltage output end Hvout, the other end is connected to one end of described resistance R3, one end of described resistance R9 is by resistance RT1 ground connection, and the other end of described resistance R3 describedly compares amplifying circuit with being connected to after the other end parallel connection of resistance R9.
6. a kind of high voltage direct current voltage stabilizing circuit as claimed in claim 5, is characterized in that: described resistance RT1 is rheostat.
7. a kind of high voltage direct current voltage stabilizing circuit as claimed in claim 1, it is characterized in that: also comprise an electric capacity C10, electric capacity C4 and diode D7, one end ground connection after described electric capacity C10, electric capacity C4 and diode D7 parallel connection, the other end is connected to low pressure input Hvin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510020822.0A CN104600996A (en) | 2015-01-15 | 2015-01-15 | High-voltage DC voltage-stabilized circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510020822.0A CN104600996A (en) | 2015-01-15 | 2015-01-15 | High-voltage DC voltage-stabilized circuit |
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| CN104600996A true CN104600996A (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510020822.0A Pending CN104600996A (en) | 2015-01-15 | 2015-01-15 | High-voltage DC voltage-stabilized circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980937A (en) * | 2017-12-27 | 2019-07-05 | 中兴通讯股份有限公司 | A kind of bias suppressing method and device |
| CN110460313A (en) * | 2019-08-22 | 2019-11-15 | 湘潭大学 | A kind of small-signal reading circuit for radiation detector |
| CN111478557A (en) * | 2020-05-08 | 2020-07-31 | 中国人民解放军战略支援部队信息工程大学 | Negative high-voltage feedback power circuit |
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2015
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| CN1057913A (en) * | 1990-07-03 | 1992-01-15 | 福建日立电视机有限公司 | Seriesly connected separately excited switching energy storaged voltage stabilized electric power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980937A (en) * | 2017-12-27 | 2019-07-05 | 中兴通讯股份有限公司 | A kind of bias suppressing method and device |
| CN109980937B (en) * | 2017-12-27 | 2021-08-17 | 中兴通讯股份有限公司 | Bias suppression method and device |
| CN110460313A (en) * | 2019-08-22 | 2019-11-15 | 湘潭大学 | A kind of small-signal reading circuit for radiation detector |
| CN111478557A (en) * | 2020-05-08 | 2020-07-31 | 中国人民解放军战略支援部队信息工程大学 | Negative high-voltage feedback power circuit |
| CN111478557B (en) * | 2020-05-08 | 2021-02-23 | 中国人民解放军战略支援部队信息工程大学 | Negative high-voltage feedback power circuit |
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Application publication date: 20150506 |