CN203691282U - Duty-ratio adjustable, period-fixed, and isolation-control bipolarity high-frequency high-voltage pulse power supply circuit - Google Patents
Duty-ratio adjustable, period-fixed, and isolation-control bipolarity high-frequency high-voltage pulse power supply circuit Download PDFInfo
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- CN203691282U CN203691282U CN201320841145.5U CN201320841145U CN203691282U CN 203691282 U CN203691282 U CN 203691282U CN 201320841145 U CN201320841145 U CN 201320841145U CN 203691282 U CN203691282 U CN 203691282U
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- 239000000835 fiber Substances 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
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- 238000007599 discharging Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
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Abstract
The utility model relates to a duty-ratio adjustable, period-fixed, and isolation-control bipolarity high-frequency high-voltage pulse power supply circuit which can be applied to fiber sensing, charging, measuring, environmental monitoring instruments and equipment in the fields of electronic industry and environmental protection. The power supply circuit includes an isolation high voltage and suspension auxiliary power supply circuit, an output pulse switching circuit, and further includes a duty-ratio adjustable and period-fixed pulse generation and isolation control circuit, and the output pulse switching circuit is connected with the isolation high voltage and suspension auxiliary power supply circuit and the duty-ratio adjustable and period-fixed pulse generation and isolation control circuit. On the basis of the complete isolation control of bipolarity high-frequency high-voltage square wave pulse output, the power supply circuit provided, which is simple, is additionally provided with an output pulse duty ratio wide-range adjustment function and a pulse output starting and stopping control function, and widens the actual application scope of such a pulse power supply.
Description
Technical field
The utility model relates to that a kind of duty ratio for instrument and equipments such as Fibre Optical Sensor, charging device, measuring instrument, environmental monitorings in the field such as electronics industry and environmental protection is adjustable, the bipolarity high-frequency and high-voltage impulse power supply circuit of fixed cycle and isolated controlling.
Background technology
Along with the development of electronics technology, the application of high-frequency and high-voltage impulse power supply constantly expands, and its output function requires to be also on the increase.Existing major function index properties can't be met the need of market completely, except the functional parameters such as the polarity, response speed, repetition rate, pulse amplitude, input and output isolation of output pulse, the also while demand high-frequency and high-voltage impulse power supply of regulation output pulse duty factor on a large scale, to meet different demands.
Summary of the invention
For meeting actual market demand, the utility model provides that the duty ratio of the features such as a kind of repetition rate is high, fast response time, duty cycle adjustment scope is large, circuit structure is simple is adjustable, the bipolarity high-frequency and high-voltage impulse power supply circuit of fixed cycle and isolated controlling.
The utility model for achieving the above object, the technical scheme of taking is: a kind of duty ratio is adjustable, the bipolarity high-frequency and high-voltage impulse power supply circuit of fixed cycle and isolated controlling, comprise isolated high-voltage and suspension auxiliary electric power supply circuit, output pulse-switching circuit, it is characterized in that: also comprise duty ratio adjustable fixed cycle pulse generation and isolation control circuit, described output pulse-switching circuit is connected with isolated high-voltage and suspension auxiliary electric power supply circuit, duty ratio is adjustable fixed cycle pulse generation and isolation control circuit respectively, in described duty ratio is adjustable fixed cycle pulse generation and isolation control circuit, trigger end 2 pin of control chip U5 are connected with threshold value end 6 pin and connect respectively adjustable end 3 pin of potentiometer W and one end of capacitor C 16, voltage controling end 5 pin of control chip U5 meet input ground GND after being connected with the other end of capacitor C 16 and earth terminal 1 pin of control chip U5 respectively by capacitor C 17, discharge end 7 pin of control chip U5 connect stiff end 2 pin of potentiometer W by resistance R 31, stiff end 1 pin of potentiometer W connects the collector electrode of triode T10 by resistance R 24, the base stage of triode T10 connects respectively the collector electrode of triode T12 and one end of resistance R 29, the emitter of triode T12 meets input ground GND by resistance R 30, feeder ear 8 pin of control chip U5 respectively with one end of resistance R 32 and capacitor C 19, the other end of resistance R 29, the emitter of triode T10, the collector electrode of triode T7 is connected and meets input feeder ear+Vin, another termination input ground GND of capacitor C 19, the forced resetting end 4 pin other end of connecting resistance R32 respectively of control chip U5, the collector electrode of triode T11, the emitter of triode T11 meets input ground GND, the base stage of triode T11 is connected with on off control end R/S by resistance R 33, triode T7, after being connected, the base stage of T8 and T12 connects output 3 pin of control chip U5, the collector electrode of triode T8 meets input ground GND, resistance R 25 is in parallel with capacitor C 18, one end of difference connecting resistance R25 after the emitter of triode T7 and T8 is connected, the base stage of another termination triode T9 of resistance R 25, the emitter of triode T9 meets input ground GND, the collector electrode of triode T9 connects respectively the negative pole of diode D9, 8 pin of four-way photoelectrical coupler chip U4, one end of resistance R 26 and R27 is connected and meets input feeder ear+Vin, the positive pole of diode D9 is the other end of connecting resistance R26 respectively, 1 pin of four-way photoelectrical coupler chip U4, 5 pin of another termination four-way photoelectrical coupler chip U4 of resistance R 27, 2 pin of four-way photoelectrical coupler chip U4 are connected with 3 pin, 6 pin of four-way photoelectrical coupler chip U4 are connected with 7 pin, 4 pin of four-way photoelectrical coupler chip U4 meet input ground GND, 9 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T3 in output pulse-switching circuit, 10 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T3 in output pulse-switching circuit, 11 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T2 in output pulse-switching circuit, 12 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T2 in output pulse-switching circuit, 13 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T4 in output pulse-switching circuit, 14 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T4 in output pulse-switching circuit, 15 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T1 in output pulse-switching circuit, 16 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T1 in output pulse-switching circuit.
The beneficial effects of the utility model are: on the basis of isolated controlling bipolarity high-frequency and high-voltage square-wave pulse output completely, regulatory function on a large scale and the pulse output on off control function of output pulse duty factor are increased, circuit is simple, has expanded the practical ranges of such pulse power.
Brief description of the drawings
Fig. 1 is that circuit of the present utility model connects block diagram.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, 2, a kind of duty ratio is adjustable, the bipolarity high-frequency and high-voltage impulse power supply circuit of fixed cycle and isolated controlling, comprise isolated high-voltage and suspension auxiliary electric power supply circuit, output pulse-switching circuit, it is characterized in that: also comprise duty ratio adjustable fixed cycle pulse generation and isolation control circuit, described output pulse-switching circuit is connected with isolated high-voltage and suspension auxiliary electric power supply circuit, duty ratio is adjustable fixed cycle pulse generation and isolation control circuit respectively;
In above-mentioned duty ratio is adjustable fixed cycle pulse generation and isolation control circuit, trigger end 2 pin of control chip U5 are connected with threshold value end 6 pin and connect respectively adjustable end 3 pin of potentiometer W and one end of capacitor C 16, voltage controling end 5 pin of control chip U5 meet input ground GND after being connected with the other end of capacitor C 16 and earth terminal 1 pin of control chip U5 respectively by capacitor C 17, discharge end 7 pin of control chip U5 connect stiff end 2 pin of potentiometer W by resistance R 31, stiff end 1 pin of potentiometer W connects the collector electrode of triode T10 by resistance R 24, the base stage of triode T10 connects respectively the collector electrode of triode T12 and one end of resistance R 29, the emitter of triode T12 meets input ground GND by resistance R 30, feeder ear 8 pin of control chip U5 respectively with one end of resistance R 32 and capacitor C 19, the other end of resistance R 29, the emitter of triode T10, the collector electrode of triode T7 is connected and meets input feeder ear+Vin, another termination input ground GND of capacitor C 19, the forced resetting end 4 pin other end of connecting resistance R32 respectively of control chip U5, the collector electrode of triode T11, the emitter of triode T11 meets input ground GND, the base stage of triode T11 is connected with on off control end R/S by resistance R 33, triode T7, after being connected, the base stage of T8 and T12 connects output 3 pin of control chip U5, the collector electrode of triode T8 meets input ground GND, resistance R 25 is in parallel with capacitor C 18, one end of difference connecting resistance R25 after the emitter of triode T7 and T8 is connected, the base stage of another termination triode T9 of resistance R 25, the emitter of triode T9 meets input ground GND, the collector electrode of triode T9 connects respectively the negative pole of diode D9, 8 pin of four-way photoelectrical coupler chip U4, one end of resistance R 26 and R27 is connected and meets input feeder ear+Vin, the positive pole of diode D9 is the other end of connecting resistance R26 respectively, 1 pin of four-way photoelectrical coupler chip U4, 5 pin of another termination four-way photoelectrical coupler chip U4 of resistance R 27, 2 pin of four-way photoelectrical coupler chip U4 are connected with 3 pin, 6 pin of four-way photoelectrical coupler chip U4 are connected with 7 pin, 4 pin of four-way photoelectrical coupler chip U4 meet input ground GND, 9 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T3 in output pulse-switching circuit, 10 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T3 in output pulse-switching circuit, 11 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T2 in output pulse-switching circuit, 12 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T2 in output pulse-switching circuit, 13 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T4 in output pulse-switching circuit, 14 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T4 in output pulse-switching circuit, 15 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T1 in output pulse-switching circuit, 16 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T1 in output pulse-switching circuit,
Whole circuit is made up of three parts.Wherein isolated high-voltage and suspension auxiliary power supply part, Master control chip U1 adopts 7555 common time-base circuits, utilize the features such as it is controlled simply, extremely low power consumption, power supply accommodation is wide, load capacity is strong, the astable multivibrator circuit of its formation, by converting rear generation isolated high-voltage and organizing suspension boost voltage more.
Fixed cycle pulse generation that duty ratio is adjustable and isolated controlling part, form multivibrator by U5 control chip 7555 grades, and it adopts independently charge and discharge loop; U4 control chip adopts TLP627-4 four-way photoelectrical coupler, and its response time is short, current transfer ratio large, isolate withstand voltage height, has guaranteed high performance isolated controlling.
Finally, by full-bridge driver output pulse switch, obtain the bipolarity hf and hv pulse output of isolation completely.
Whole circuit control is simple, consume energy little, output pulse repetition rate high, duty cycle adjustment scope is large.For improving circuit performance, select that noise is low, temperature is floated components and parts little, that high frequency characteristics is good.All components and parts all can adopt paster encapsulation, to reduce overall dimension.
Operation principle
In isolated high-voltage and suspension auxiliary electric power supply circuit, the composition such as control chip U1 and capacitor C 4, resistance R 2 and R1 astable multivibrator circuit.The oscillation pulse signal of exporting from 3 pin of control chip U1, by switch triode T5 driving transformer TRF primary coil Lp, produce higher-order of oscillation pulse voltage at its two ends, and be coupled to by switch transformer TRF that it is secondary, the high pressure isolation sampling feedback control forming by U2, U3 etc., obtain the output of stable isolated high-voltage, simultaneously again the many groups of additional output suspension boost voltage+V1 ,+V2 and+V3.
In duty ratio is adjustable fixed cycle pulse generation and isolation control circuit, form astable multivibrator by control chip U5, capacitor C 16, resistance R 24 and R31, triode T10 and T12, potentiometer W.Independently separately, regulator potentiometer W, can change charge and discharge time constant by wide region, but its frequency of oscillation can not change in the charging and discharging loop of capacitor C 16.Be charged to before threshold level in capacitor C 16, output 3 pin of control chip U5 are high level, i.e. triode T12 conducting, triode T10 saturation conduction.The adjustable pulse of duty ratio of the output 3 pin outputs of control chip U5 passes through to control triode T9, and then controls isolating switch U4.In the time that output 3 pin of control chip U5 are high level, triode T9 is open-minded, and diode D9 is by 1,2 pin of U4 and photoelectrical coupler input clamper corresponding to 3,4 pin, and therefore the output state of U4 is that K1 and K4 disconnect, and K2 and K3 are open-minded; Otherwise, in the time that output 3 pin of control chip U5 are low level, triode T9 cut-off, the photoelectrical coupler input diode conducting that 1,2 pin of U4 and 3,4 pin are corresponding, the photoelectrical coupler input diode cut-off that 5,6 pin of U4 and 7,8 pin are corresponding, therefore the output state of U4 is that K1 and K4 are open-minded, and K2 and K3 disconnect.
In output pulse-switching circuit, by the output state of isolating switch U4, control switch MOS triode T1 ~ T4 periodically respectively.In the time that K1 and K4 disconnection, K2 and K3 open, switch transistor T 1 and T4 conducting, switch transistor T 2 and T3 turn-off, the high-voltage pulse of a polarity of output; As K1 with K4 opens, K2 and K3 be while disconnecting, switch transistor T 1 and T4 turn-off, and the high-voltage pulse of another polarity is exported in switch transistor T 2 and T3 conducting.
Claims (1)
1. the bipolarity high-frequency and high-voltage impulse power supply circuit of adjustable, the fixed cycle of a duty ratio and isolated controlling, comprise isolated high-voltage and suspension auxiliary electric power supply circuit, output pulse-switching circuit, it is characterized in that: also comprise duty ratio adjustable fixed cycle pulse generation and isolation control circuit, described output pulse-switching circuit is connected with isolated high-voltage and suspension auxiliary electric power supply circuit, duty ratio is adjustable fixed cycle pulse generation and isolation control circuit respectively;
In described duty ratio is adjustable fixed cycle pulse generation and isolation control circuit, trigger end 2 pin of control chip U5 are connected with threshold value end 6 pin and connect respectively adjustable end 3 pin of potentiometer W and one end of capacitor C 16, voltage controling end 5 pin of control chip U5 meet input ground GND after being connected with the other end of capacitor C 16 and earth terminal 1 pin of control chip U5 respectively by capacitor C 17, discharge end 7 pin of control chip U5 connect stiff end 2 pin of potentiometer W by resistance R 31, stiff end 1 pin of potentiometer W connects the collector electrode of triode T10 by resistance R 24, the base stage of triode T10 connects respectively the collector electrode of triode T12 and one end of resistance R 29, the emitter of triode T12 meets input ground GND by resistance R 30, feeder ear 8 pin of control chip U5 respectively with one end of resistance R 32 and capacitor C 19, the other end of resistance R 29, the emitter of triode T10, the collector electrode of triode T7 is connected and meets input feeder ear+Vin, another termination input ground GND of capacitor C 19, the forced resetting end 4 pin other end of connecting resistance R32 respectively of control chip U5, the collector electrode of triode T11, the emitter of triode T11 meets input ground GND, the base stage of triode T11 is connected with on off control end R/S by resistance R 33, triode T7, after being connected, the base stage of T8 and T12 connects output 3 pin of control chip U5, the collector electrode of triode T8 meets input ground GND, resistance R 25 is in parallel with capacitor C 18, one end of difference connecting resistance R25 after the emitter of triode T7 and T8 is connected, the base stage of another termination triode T9 of resistance R 25, the emitter of triode T9 meets input ground GND, the collector electrode of triode T9 connects respectively the negative pole of diode D9, 8 pin of four-way photoelectrical coupler chip U4, one end of resistance R 26 and R27 is connected and meets input feeder ear+Vin, the positive pole of diode D9 is the other end of connecting resistance R26 respectively, 1 pin of four-way photoelectrical coupler chip U4, 5 pin of another termination four-way photoelectrical coupler chip U4 of resistance R 27, 2 pin of four-way photoelectrical coupler chip U4 are connected with 3 pin, 6 pin of four-way photoelectrical coupler chip U4 are connected with 7 pin, 4 pin of four-way photoelectrical coupler chip U4 meet input ground GND, 9 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T3 in output pulse-switching circuit, 10 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T3 in output pulse-switching circuit, 11 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T2 in output pulse-switching circuit, 12 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T2 in output pulse-switching circuit, 13 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T4 in output pulse-switching circuit, 14 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T4 in output pulse-switching circuit, 15 pin of four-way photoelectrical coupler chip U4 connect the source electrode of MOS triode T1 in output pulse-switching circuit, 16 pin of four-way photoelectrical coupler chip U4 connect the grid of MOS triode T1 in output pulse-switching circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320841145.5U CN203691282U (en) | 2013-12-19 | 2013-12-19 | Duty-ratio adjustable, period-fixed, and isolation-control bipolarity high-frequency high-voltage pulse power supply circuit |
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| CN201320841145.5U CN203691282U (en) | 2013-12-19 | 2013-12-19 | Duty-ratio adjustable, period-fixed, and isolation-control bipolarity high-frequency high-voltage pulse power supply circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787926A (en) * | 2016-12-22 | 2017-05-31 | 吉林大学 | A kind of highpowerpulse current generating system |
| CN110045199A (en) * | 2019-03-20 | 2019-07-23 | 杭州通鉴科技有限公司 | A kind of EFT/ESD/CS analysis of electromagnetic interference instrument |
-
2013
- 2013-12-19 CN CN201320841145.5U patent/CN203691282U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787926A (en) * | 2016-12-22 | 2017-05-31 | 吉林大学 | A kind of highpowerpulse current generating system |
| CN106787926B (en) * | 2016-12-22 | 2019-01-15 | 吉林大学 | A kind of highpowerpulse current generating system |
| CN110045199A (en) * | 2019-03-20 | 2019-07-23 | 杭州通鉴科技有限公司 | A kind of EFT/ESD/CS analysis of electromagnetic interference instrument |
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Granted publication date: 20140702 |
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