CN103501106A - Bipolar output linear regulated power supply - Google Patents
Bipolar output linear regulated power supply Download PDFInfo
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- CN103501106A CN103501106A CN201310482289.0A CN201310482289A CN103501106A CN 103501106 A CN103501106 A CN 103501106A CN 201310482289 A CN201310482289 A CN 201310482289A CN 103501106 A CN103501106 A CN 103501106A
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Abstract
The invention provides a bipolar output linear regulated power supply, which comprises a transformer, and a rectifier and filter circuit connected with the transformer, wherein the output positive terminal of the rectifier and filter circuit is connected with a positive output voltage regulator module, and the output negative terminal of the rectifier and filter circuit is connected with a negative output voltage regulator module; and the positive output voltage regulator module is used for regulating positively output voltage, and the negative output voltage regulator module is used for regulating negatively output voltage. The bipolar output linear regulated power supply provided by the invention can realize both the positive and negative bipolar DC voltage output, and the AC voltage output, and the rate of change of output voltage can reach microsecond level.
Description
Technical field
The invention belongs to the power electronic technology application, be specifically related to a kind of linear stabilized power supply of bipolarity output.
Background technology
Linear stabilized power supply, English name is Linear power supply, is the powerful triode of series connection access in the loop of power supply, makes triode be operated in linear zone, reaches the purpose of output voltage stabilization by the conducting resistance of controlling triode.Linear stabilized power supply has that output ripple is little, and the interference of self and noise are all smaller, in a lot of occasions, is widely used.The theory diagram of linear stabilized power supply as shown in Figure 1, AC-input voltage is through transformer A01 conversion, the alternating voltage that output amplitude is suitable, pass through again A02 rectification and filtering, the anode of output dc voltage is connected to the C utmost point of adjusting pipe A03, adjust pipe A03 and formed by powerful triode or power MOSFET tube (full name " high voltage metal oxide silicon field effect transistor "), the output plus terminal that the E level of adjusting pipe A03 is power supply.The voltage sampling signal of A06 output, directly reacted the output voltage of power supply.A04 is voltage reference signal, and voltage sampling signal and the voltage reference signal of A06 output carry out the error computing, control the conducting resistance of adjusting pipe A03, guarantees the stable of output voltage.Although the output ripple of this linear stabilized power supply is little, disturb littlely, there is following shortcoming:
1) can only unipolarity output, can only output dc voltage, can not output AC voltage and negative voltage.
2) requiring the output voltage can fast-changing occasion, can not meet the demands.The conventional linear stabilized voltage power supply realizes waveform that output voltage changes as shown in Figure 2, and its output voltage is elevated to U2 time t2-t1 used from U1, and this time is shorter; But, when requiring output voltage to be reduced to U1 from U2, time t4-t3 used is very long, especially, when output voltage terminal is connected to filter capacitor, the time used that descends even can reach several seconds, and the application scenario special for some can not meet the demands.
A kind of " linear stabilized power supply " that the utility model patent that for example notification number is CN201134055U provides, it comprises high-performance trsanscondutance amplifier and excess-current excess-temperature protection and buffer, the output of excess-current excess-temperature protection and buffer is connected with the input of high-pressure MOS power tube, and the output current of high-pressure MOS power tube is connected with the high-performance trsanscondutance amplifier through sample circuit; Another input of high-performance trsanscondutance amplifier also is connected with high-precision voltage reference; Output capacitance Cout and equivalent series resistance ESR are connected between the output and ground of high-pressure MOS power tube; Between the protection of high-performance trsanscondutance amplifier and excess-current excess-temperature and buffer also with electric capacity, resistance and connect, the limit caused for offsetting the high-pressure MOS power tube.It makes the static power of whole integrated circuit greatly reduce, and whole system efficiency improves greatly, can extend the battery life of the electronic product in portable use field, can simplify the design that heat radiation requires; But still can not overcome the above-mentioned shortcoming of conventional linear stabilized voltage power supply.
Summary of the invention
In order to solve the above-mentioned shortcoming of conventional linear stabilized voltage power supply, the invention provides and a kind ofly can either realize the positive negative bipolar direct voltage output, also can output AC voltage, and the speed that changes of output voltage can reach the linear stabilized power supply of the bipolarity output of Microsecond grade.
The present invention realizes above-mentioned technical purpose by following technological means.
A kind of linear stabilized power supply of bipolarity output, comprise transformer, the current rectifying and wave filtering circuit be connected with transformer, it is characterized in that, the anode of described current rectifying and wave filtering circuit output is connected with forward output Voltage stabilizing module, the negative terminal of described current rectifying and wave filtering circuit output is connected with negative sense output Voltage stabilizing module, described forward output Voltage stabilizing module is for the voltage stabilizing of forward output voltage, and described negative sense output Voltage stabilizing module is for the voltage stabilizing of negative sense output voltage.
Preferably, described forward output Voltage stabilizing module comprises forward adjustment pipe, forward voltage reference circuit, positive error amplifier, forward drive circuit, forward output voltage sampling circuit, the collector electrode that described forward is adjusted pipe is connected with the anode of current rectifying and wave filtering circuit output, and described forward is adjusted the output of the emitter of pipe as power supply; The forward output voltage sampling circuit is connected with the reverse input end of positive error amplifier; The forward voltage reference circuit is connected with the positive input of positive error amplifier, for changing the output voltage of linear power supply; The positive error amplifier is connected with the forward drive circuit; The forward drive circuit is connected with forward adjustment pipe, for driving forward to adjust pipe, is operated in suitable linear zone.
Preferably, described negative sense output Voltage stabilizing module comprises negative sense adjustment pipe, negative voltage reference circuit, negative sense error amplifier, negative sense drive circuit, negative sense output voltage sampling circuit, the collector electrode that described negative sense is adjusted pipe is connected with the emitter of forward adjustment pipe, and the emitter that described negative sense is adjusted pipe is connected with the output negative terminal of current rectifying and wave filtering circuit; The negative sense output voltage sampling circuit is connected with the positive input of negative sense error amplifier; The negative voltage reference circuit is connected with the reverse input end of negative sense error amplifier, for changing the output voltage of linear power supply; The negative sense error amplifier is connected with the negative sense drive circuit; The negative sense drive circuit is connected with negative sense adjustment pipe, for driving negative sense to adjust pipe, is operated in suitable linear zone.
Preferably, described forward voltage reference circuit is consistent with the voltage reference of negative voltage reference circuit.
Preferably, described forward adjustment pipe and negative sense adjustment pipe, form by triode or MOSFET pipe.
Preferably, described forward adjustment pipe and negative sense adjustment pipe, be formed in parallel by a plurality of identical triodes or a plurality of identical MOSFET pipe.
Preferably, described current rectifying and wave filtering circuit also is connected with ground wire.
Preferably, the Fu Bianwei of described transformer is with centre tapped two windings.
Preferably, the linear stabilized power supply of described bipolarity output, comprise that the forward of a plurality of parallel connections is exported Voltage stabilizing module, the negative sense output Voltage stabilizing module of a plurality of parallel connections.
The linear stabilized power supply of bipolarity output of the present invention, can bipolarity export, and also can unipolarity export, and simultaneously, the pace of change of output voltage can reach the microsecond rank.
The linear stabilized power supply of bipolarity output provided by the invention is compared with the conventional linear stabilized voltage power supply, has the following advantages:
1) linear stabilized power supply of described bipolarity output, can realize the positive negative bipolar Voltage-output; When forward voltage benchmark and negative voltage benchmark are timing, output voltage is for just; When forward voltage benchmark and negative voltage benchmark, when negative, output voltage is for negative.
2) linear stabilized power supply of described bipolarity output, can realize the quick variation of output voltage, and when its output voltage changes, the time of rising edge and trailing edge can reach Microsecond grade.
3) by adopting the parallel connection of a plurality of forward output Voltage stabilizing module, the parallel connection of a plurality of negative sense output Voltage stabilizing modules, realize the application of different capacity grade.
The accompanying drawing explanation
The theory diagram that Fig. 1 is the conventional linear stabilized voltage power supply.
Fig. 2 is that the conventional linear power supply is realized the oscillogram that output voltage changes.
The theory diagram of the linear stabilized power supply that Fig. 3 is bipolarity output of the present invention.
The theory diagram that Fig. 4 is described forward output Voltage stabilizing module.
The theory diagram that Fig. 5 is described negative sense output Voltage stabilizing module.
The structured flowchart of the embodiment of linear stabilized power supply that Fig. 6 is bipolarity output of the present invention.
The oscillogram when linear stabilized power supply that Fig. 7 is bipolarity output of the present invention is realized the output voltage variation.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
Figure 3 shows that the theory diagram of the linear stabilized power supply of realizing bipolarity output, the linear stabilized power supply of bipolarity output provided by the present invention, comprise transformer, the current rectifying and wave filtering circuit be connected with transformer, forward output Voltage stabilizing module, negative sense output Voltage stabilizing module.Pair limit of described transformer transformer is to be with centre tapped two windings; Described transformer, for realizing the conversion of voltage, transforms to suitable amplitude by AC-input voltage, and realizes electric isolation.Described current rectifying and wave filtering circuit carries out rectification and filtering for the alternating voltage to transformer output, the output generating positive and negative voltage, and in order to guarantee Electrical Safety, described current rectifying and wave filtering circuit also is connected with ground wire.Described forward output Voltage stabilizing module is connected with the anode of described current rectifying and wave filtering circuit output, for the voltage stabilizing of forward output voltage.Described negative sense output Voltage stabilizing module is connected with the negative terminal of current rectifying and wave filtering circuit output, for the voltage stabilizing of negative sense output voltage.When forward voltage benchmark and negative voltage benchmark are timing, output voltage is for just; When forward voltage benchmark and negative voltage benchmark, when negative, output voltage is for negative, thereby realizes the positive negative bipolar Voltage-output.Preferably, the linear stabilized power supply of described bipolarity output also can comprise the forward output Voltage stabilizing module of a plurality of parallel connections, and the negative sense output Voltage stabilizing module of a plurality of parallel connections, can realize the application of different capacity grade.
Particularly, described forward output Voltage stabilizing module as shown in Figure 4, comprises forward adjustment pipe, forward voltage reference circuit, positive error amplifier, forward drive circuit, forward output voltage sampling circuit.Described forward is adjusted pipe and is comprised of triode or MOSFET pipe, can, according to the size of power output, adopt a plurality of identical triodes or a plurality of identical MOSFET pipe to be formed in parallel.The collector electrode that described forward is adjusted pipe is connected with the anode of current rectifying and wave filtering circuit output, and described forward is adjusted the output of the emitter of pipe as power supply.The forward output voltage sampling circuit is connected with the reverse input end of positive error amplifier, and the forward voltage reference circuit is connected with the positive input of positive error amplifier, changes the output voltage of linear power supply by changing the forward voltage benchmark.The positive error amplifier is connected with the forward drive circuit, and the forward drive circuit is connected with forward adjustment pipe.Forward is adjusted the conducting state of pipe and is controlled by the forward drive circuit, and particularly, the forward output voltage sampling circuit gathers the reverse input end that the output voltage sampling circuit signal is connected to error amplifier.The positive error amplifier amplifies error between output voltage and forward reference voltage and sends the forward drive circuit to, the forward drive circuit is according to the error between output voltage and forward reference voltage, drive forward to adjust pipe and be operated in suitable linear zone, make the output voltage of power supply keep stable.
Described negative sense output Voltage stabilizing module as shown in Figure 5, comprises negative sense adjustment pipe, negative voltage reference circuit, negative sense error amplifier, negative sense drive circuit, negative sense output voltage sampling circuit.Described negative sense is adjusted pipe and is comprised of triode or MOSFET pipe, can, according to the size of power output, adopt a plurality of identical triodes or a plurality of identical MOSFET pipe to be formed in parallel.The collector electrode that described negative sense is adjusted pipe is connected with the emitter of forward adjustment pipe, and the emitter that described negative sense is adjusted pipe is connected with the output negative terminal of current rectifying and wave filtering circuit.The negative sense output voltage sampling circuit is connected with the positive input of negative sense error amplifier.The negative voltage reference circuit is connected with the reverse input end of negative sense error amplifier, changes the output voltage of linear power supply by changing the negative voltage benchmark.The voltage reference amplitude of negative voltage reference circuit and forward voltage reference circuit is consistent.The negative sense error amplifier is connected with the negative sense drive circuit; The negative sense drive circuit is connected with negative sense adjustment pipe, for driving negative sense to adjust pipe, is operated in suitable linear zone.Negative sense is adjusted the conducting state of pipe and is controlled by the negative sense drive circuit, and particularly, the negative sense output voltage sampling circuit gathers the reverse input end that the output voltage sampling circuit signal is connected to error amplifier.The negative sense error amplifier amplifies error between output voltage and negative sense reference voltage and sends the negative sense drive circuit to, the negative sense drive circuit is according to the error between output voltage and negative sense reference voltage, drive negative sense to adjust pipe and be operated in suitable linear zone, make the output voltage of power supply keep stable.
Figure 6 shows that a specific embodiment of the present invention, comprising:
Transformer: pair limit of transformer is to be with centre tapped two windings.
Current rectifying and wave filtering circuit: transformer is paid the output of limit winding after current rectifying and wave filtering circuit rectification and filtering, exports positive negative dc voltage.
Forward adjustment pipe: form with high-power MOSFET tube, according to the size of power output, can adopt the MOSFET parallel connection that a plurality of models are identical.The drain electrode of MOSFET pipe connects the output plus terminal of current rectifying and wave filtering circuit, the output that the source electrode of MOSFET pipe is power supply, and the grid of MOSFET pipe connects the output of forward drive circuit.
The forward drive circuit: the input of forward drive circuit connects the output of positive error amplifier, drives the work of forward adjustment pipe.
The forward output voltage sampling circuit: adopt branch pressure voltage to realize, the output signal of forward output voltage sampling circuit is directly proportional to output voltage.
The positive error amplifier: the reverse input end of positive error amplifier connects the voltage signal of forward output voltage sampling circuit output; The positive input of positive error amplifier connects the forward voltage reference circuit.
Forward voltage reference circuit: by changing the output voltage signal of forward voltage reference circuit, can change the output voltage of power supply.
Negative sense adjustment pipe: serve as with high-power MOSFET tube, according to the size of power output, can adopt the MOSFET parallel connection that a plurality of models are identical.The source electrode of MOSFET pipe connects the output negative terminal of current rectifying and wave filtering circuit, and the drain electrode of MOSFET pipe is the output that connects power supply, and the grid of MOSFET pipe connects the output of negative sense drive circuit.
The negative voltage reference circuit: output voltage signal amplitude, the waveform of the output voltage signal of negative voltage reference circuit and forward voltage reference circuit are just the same, and just the reference of two signals ground is inconsistent.The output voltage reference signal of negative voltage reference circuit connects the reverse input end of negative sense error amplifier.
The negative sense error amplifier: the positive input of negative sense error amplifier connects the output of negative sense output voltage sampling circuit negative sense error amplifier.
The negative sense drive circuit: the input of negative sense drive circuit connects the output of negative sense error amplifier, drives the work of negative sense adjustment pipe.
By change the voltage amplitude of forward voltage reference circuit and negative voltage reference circuit simultaneously, just can realize the change of output voltage.As shown in Figure 7, when its output voltage changes, the time of rising edge and trailing edge can reach Microsecond grade to oscillogram when the linear stabilized power supply of bipolarity output of the present invention is realized the output voltage variation.
The present invention is not limited to above-mentioned execution mode, in the situation that do not deviate from flesh and blood of the present invention, any apparent improvement, replacement or modification that those skilled in the art can make all belong to protection scope of the present invention.
Claims (9)
1. the linear stabilized power supply of bipolarity output, comprise transformer, the current rectifying and wave filtering circuit be connected with transformer, it is characterized in that, the anode of described current rectifying and wave filtering circuit output is connected with forward output Voltage stabilizing module, the negative terminal of described current rectifying and wave filtering circuit output is connected with negative sense output Voltage stabilizing module, described forward output Voltage stabilizing module is for the voltage stabilizing of forward output voltage, and described negative sense output Voltage stabilizing module is for the voltage stabilizing of negative sense output voltage.
2. the linear stabilized power supply that bipolarity according to claim 1 is exported, it is characterized in that, described forward output Voltage stabilizing module comprises forward adjustment pipe, forward voltage reference circuit, positive error amplifier, forward drive circuit, forward output voltage sampling circuit, the collector electrode that described forward is adjusted pipe is connected with the anode of current rectifying and wave filtering circuit output, and described forward is adjusted the output of the emitter of pipe as power supply; The forward output voltage sampling circuit is connected with the reverse input end of positive error amplifier; The forward voltage benchmark is connected with the positive input of positive error amplifier, for changing the output voltage of linear power supply; The positive error amplifier is connected with the forward drive circuit; The forward drive circuit is connected with forward adjustment pipe, for driving forward to adjust pipe, is operated in suitable linear zone.
3. the linear stabilized power supply that bipolarity according to claim 2 is exported, it is characterized in that, described negative sense output Voltage stabilizing module comprises negative sense adjustment pipe, negative voltage reference circuit, negative sense error amplifier, negative sense drive circuit, negative sense output voltage sampling circuit, the collector electrode that described negative sense is adjusted pipe is connected with the emitter of forward adjustment pipe, and the emitter that described negative sense is adjusted pipe is connected with the output negative terminal of current rectifying and wave filtering circuit; The negative sense output voltage sampling circuit is connected with the positive input of negative sense error amplifier; The negative voltage reference circuit is connected with the reverse input end of negative sense error amplifier, for changing the output voltage of linear power supply; The negative sense error amplifier is connected with the negative sense drive circuit; The negative sense drive circuit is connected with negative sense adjustment pipe, for driving negative sense to adjust pipe, is operated in suitable linear zone.
4. the linear stabilized power supply of bipolarity output according to claim 3, is characterized in that, described forward voltage reference circuit is consistent with the voltage reference of negative voltage reference circuit.
5. the linear stabilized power supply of bipolarity output according to claim 1, is characterized in that, described forward adjustment pipe and negative sense adjustment pipe form by triode or MOSFET pipe.
6. the linear stabilized power supply of bipolarity output according to claim 5, is characterized in that described forward adjustment pipe and negative sense adjustment pipe are formed in parallel by a plurality of identical triodes or a plurality of identical MOSFET pipe.
7. the linear stabilized power supply of bipolarity output according to claim 1, is characterized in that, described rectification also is connected with ground wire with filter circuit.
8. the linear stabilized power supply of bipolarity output according to claim 1, is characterized in that, the Fu Bianwei of described transformer is with centre tapped two windings.
9. the linear stabilized power supply of bipolarity output according to claim 1, is characterized in that, the linear stabilized power supply of described bipolarity output comprises that the forward of a plurality of parallel connections is exported Voltage stabilizing module, the negative sense output Voltage stabilizing module of a plurality of parallel connections.
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| CN201310482289.0A CN103501106A (en) | 2013-10-15 | 2013-10-15 | Bipolar output linear regulated power supply |
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| CN201310482289.0A CN103501106A (en) | 2013-10-15 | 2013-10-15 | Bipolar output linear regulated power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953803A (en) * | 2015-07-06 | 2015-09-30 | 中国海洋石油总公司 | Power supply for ultrasonic phased array well wall imaging system |
| CN106787731A (en) * | 2017-02-15 | 2017-05-31 | 天水七四九电子有限公司 | A kind of positive negative output voltage suppression circuit and method |
| CN107994785A (en) * | 2017-12-08 | 2018-05-04 | 安徽泰德电子科技有限公司 | A kind of polarity automatic conversion voltage stabilizing control circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178607A (en) * | 2006-11-06 | 2008-05-14 | 麦可丽股份有限公司 | Dual input prioritized LOD regulator |
| CN102570895A (en) * | 2010-12-21 | 2012-07-11 | 沈阳新松机器人自动化股份有限公司 | Piezoceramic driving power supply |
| CN202565177U (en) * | 2012-05-15 | 2012-11-28 | 齐齐哈尔职业学院 | Digital adjustable dual-output precise DC voltage stabilized power supply |
| CN203491879U (en) * | 2013-10-15 | 2014-03-19 | 何志刚 | Bipolar-output linear voltage-stabilized power supply |
-
2013
- 2013-10-15 CN CN201310482289.0A patent/CN103501106A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101178607A (en) * | 2006-11-06 | 2008-05-14 | 麦可丽股份有限公司 | Dual input prioritized LOD regulator |
| CN102570895A (en) * | 2010-12-21 | 2012-07-11 | 沈阳新松机器人自动化股份有限公司 | Piezoceramic driving power supply |
| CN202565177U (en) * | 2012-05-15 | 2012-11-28 | 齐齐哈尔职业学院 | Digital adjustable dual-output precise DC voltage stabilized power supply |
| CN203491879U (en) * | 2013-10-15 | 2014-03-19 | 何志刚 | Bipolar-output linear voltage-stabilized power supply |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953803A (en) * | 2015-07-06 | 2015-09-30 | 中国海洋石油总公司 | Power supply for ultrasonic phased array well wall imaging system |
| CN104953803B (en) * | 2015-07-06 | 2018-04-17 | 中国海洋石油总公司 | Ultrasonic phase array borehole wall imaging system power supply |
| CN106787731A (en) * | 2017-02-15 | 2017-05-31 | 天水七四九电子有限公司 | A kind of positive negative output voltage suppression circuit and method |
| CN107994785A (en) * | 2017-12-08 | 2018-05-04 | 安徽泰德电子科技有限公司 | A kind of polarity automatic conversion voltage stabilizing control circuit |
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