CN106253710A - A kind of based on the soft start mu balanced circuit comparing amplifying circuit - Google Patents
A kind of based on the soft start mu balanced circuit comparing amplifying circuit Download PDFInfo
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- CN106253710A CN106253710A CN201610601908.7A CN201610601908A CN106253710A CN 106253710 A CN106253710 A CN 106253710A CN 201610601908 A CN201610601908 A CN 201610601908A CN 106253710 A CN106253710 A CN 106253710A
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- pole
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- electric capacity
- diode
- resistance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of based on the soft start mu balanced circuit comparing amplifying circuit, it is characterized in that: main by transformator T, diode rectifier U, audion VT4, resistance R3, resistance R4, electric capacity C1, electric capacity C4, diode D2, diode D3, soft start processes circuit, compares amplifying circuit and delay startup circuit composition.The present invention can realize the soft start to electronic product, and after making the present invention switch on power, output voltage is through a process started, and rises to set-point with slower speed, to protect electronic product not impacted by surge；During startup, the present invention also ensures that the optimum delay time of about 30 seconds；It is suitable for promoting the use.
Description
Technical field
The present invention relates to a kind of soft starting circuit, particularly relate to a kind of based on the soft start voltage stabilizing electricity comparing amplifying circuit
Road.
Background technology
Along with science and technology development, electronic technology is able to fast development, and electronics categories is more and more abundanter, various respectively
The electronic product of sample enters into the family of common people so that daily life also be unable to do without electronic product.Due to various
The performance of electronic product is not quite similar, and some electronic products need soft start when using, in order to protection electronic product is on startup
Do not impacted by surge.But, the structure being currently used for realizing soft start is the most more complicated, and the delay time started is relatively
Long, thus use to user and bring great inconvenience.
Summary of the invention
It is an object of the invention to provide a kind of based on comparing the soft start mu balanced circuit of amplifying circuit, to mesh to be solved
Before the most more complicated for realizing the structure of soft start, and the problem that the delay time that starts is longer.
The present invention is achieved through the following technical solutions:
A kind of based on comparing the soft start mu balanced circuit of amplifying circuit, mainly by transformator T, diode rectifier U, three poles
Pipe VT4, positive pole is connected with the positive output end of diode rectifier U, negative pole is connected with the negative output terminal of diode rectifier U
Electric capacity C1, the soft start being connected with positive pole and the negative pole of electric capacity C1 respectively processes circuit, and positive pole and soft start process circuit
Be connected, electric capacity C4 that negative pole is connected with the negative pole of electric capacity C1, one end is connected with the positive pole of electric capacity C4, the other end and three poles
Resistance R3, the P pole that the base stage of pipe VT4 is connected is connected with the negative pole of electric capacity C4, N pole is connected with the emitter stage of audion VT4
The diode D2 connect, the delay startup circuit being connected with the emitter stage of audion VT4 and the P pole of diode D2 respectively, P pole with
The diode D3 that delay startup circuit is connected, N pole colelctor electrode with audion VT4 after resistance R4 is connected, and respectively
The comparison amplifying circuit composition that circuit is connected is processed with N pole and the soft start of diode D3；The former limit inductance of described transformator T
The two ends composition power input of coil, an input of described diode rectifier U and the secondary inductance coil of transformator T
Non-same polarity be connected, its another input is connected with the Same Name of Ends of the secondary inductance coil of transformator T.
Further, the described amplifying circuit that compares is opened with soft by operational amplifier P, audion VT7, audion VT8, one end
The dynamic process resistance R9 that circuit is connected, the other end is connected with the positive input terminal of operational amplifier P, positive pole and operational amplifier
The electric capacity C7 that the positive input terminal of P is connected, negative pole outfan with operational amplifier P after resistance R12 is connected, positive pole is through electricity
Be connected with the negative input end of operational amplifier P after resistance R10, electric capacity C8, the P pole of minus earth is connected with the positive pole of electric capacity C8
Connect, diode D5 that N pole base stage with audion VT7 after resistance R11 is connected, be serially connected in electric capacity C7 and audion VT7's
Resistance R13 between colelctor electrode, is serially connected in the resistance between the outfan of operational amplifier P and the colelctor electrode of audion VT7
The diode D6 that R14, P pole is connected with the colelctor electrode of audion VT7, N pole is connected with the emitter stage of audion VT8, and P
The diode D7 group that pole is connected with the base stage of audion VT7, N pole base stage with audion VT8 after resistance R15 is connected
Become；The colelctor electrode of described audion VT8 is connected with the emitter stage of audion VT7, and its base stage is extremely connected with the N of diode D3
Connect.
Further, described soft start process circuit is by audion VT1, audion VT2, and audion VT3, positive pole is through electricity
Be connected with the colelctor electrode of audion VT2 after resistance R1, electric capacity C2 that negative pole is connected with the emitter stage of audion VT3, one end and
The collection of the resistance R2 that the positive pole of electric capacity C2 is connected, the other end is connected with the base stage of audion VT2, positive pole and audion VT3
The electric capacity C3 that electrode is connected, negative pole is connected with the base stage of audion VT3, and P pole is connected with the emitter stage of audion VT3
Connect, diode D1 that N pole is connected with the base stage of audion VT3 composition；The base stage of described audion VT1 is with audion VT2's
Emitter stage is connected, and its colelctor electrode is connected with the colelctor electrode of audion VT2 and the positive pole of electric capacity C1 respectively, and its emitter stage is through electricity
It is connected with the positive input terminal of operational amplifier P after resistance R9；The colelctor electrode of described audion VT3 respectively with the base of audion VT2
Pole is connected with the positive pole of electric capacity C4, and its emitter stage is connected with the negative pole of electric capacity C4.
Further, described delay startup circuit is by the collection of audion VT5, audion VT6, one end and audion VT5
The resistance R5 that electrode is connected, the other end is connected with the P pole of diode D2, positive pole is connected with the N pole of diode D3, negative pole
The electric capacity C5 being connected with the base stage of audion VT5, one end is connected with the positive pole of electric capacity C5, the other end and audion VT6
P pole with diode D2 after resistance R6, resistance R7, the P pole that emitter stage is connected is connected, N pole after resistance R8 with audion
The diode D4 that the colelctor electrode of VT6 is connected, one end is connected with the P pole of diode D4, the transmitting of the other end and audion VT6
The slide rheostat RP that pole is connected, and positive pole is connected with the N pole of diode D4, negative pole is extremely connected with the P of diode D2
The electric capacity C6 composition connect；The base stage of described audion VT5 is connected with the control end of slide rheostat RP, its colelctor electrode and three poles
The emitter stage of pipe VT4 is connected；The base stage of described audion VT6 collectively constitutes the defeated of delay startup circuit with the negative pole of electric capacity C6
Going out end, the base stage of this audion VT6 is also connected with the N pole of diode D3.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) present invention can realize the soft start to electronic product, and after making the present invention switch on power, output voltage is through one
The process started, rises to set-point with slower speed, to protect electronic product not impacted by surge.Start
Time, the present invention also ensures that the optimum delay time of about 30 seconds.
(2) present invention can also effectively put forward high-tension resistance to pressure in use, and can be by inclined for the middle zero point of electric current
Shifting controls within 0.5nA, ensures that the stability of the voltage and current that the present invention exports to electronic product.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the circuit diagram of the comparison amplifying circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, 2, the present invention based on comparing the soft start mu balanced circuit of amplifying circuit, mainly by transformator T, two
Pole pipe commutator U, audion VT4, resistance R3, resistance R4, electric capacity C1, electric capacity C4, diode D2, diode D3, at soft start
Reason circuit, compares amplifying circuit and delay startup circuit composition.
During connection, the positive pole of described electric capacity C1 is connected with the positive output end of diode rectifier U, its negative pole and diode
The negative output terminal of commutator U is connected；Described soft start processes circuit and is connected with positive pole and the negative pole of electric capacity C1 respectively.Described
The positive pole of electric capacity C4 processes circuit with soft start and is connected, and negative pole is connected with the negative pole of electric capacity C1.One end of described resistance R3
Being connected with the positive pole of electric capacity C4, its other end is connected with the base stage of audion VT4.The P pole of described diode D2 and electric capacity
The negative pole of C4 is connected, and its N pole is connected with the emitter stage of audion VT4.The P pole of described diode D3 and delay startup circuit
Being connected, its N pole colelctor electrode with audion VT4 after resistance R4 is connected.Described compare amplifying circuit respectively with diode
The N pole of D3 and soft start process circuit and are connected, described delay startup circuit respectively with emitter stage and the diode of audion VT4
The P pole of D2 is connected.
Meanwhile, the two ends composition power input of the former limit inductance coil of described transformator T, during use, this power supply inputs
End can be directly connected to civil power.One input of described diode rectifier U is non-of the same name with the secondary inductance coil of transformator T
End is connected, and its another input is connected with the Same Name of Ends of the secondary inductance coil of transformator T.The N of described diode D3
Pole processes circuit with soft start and is connected.
Described soft start processes circuit by audion VT1, audion VT2, audion VT3, resistance R1, resistance R2, electric capacity
C2, electric capacity C3 and diode D1 form.
During connection, the positive pole of described electric capacity C2 colelctor electrode with audion VT2 after resistance R1 is connected, its negative pole and three
The emitter stage of pole pipe VT3 is connected.One end of described resistance R2 is connected with the positive pole of electric capacity C2, its other end and audion
The base stage of VT2 is connected.The positive pole of described electric capacity C3 is connected with the colelctor electrode of audion VT3, and its negative pole is with audion VT3's
Base stage is connected.The P pole of described diode D1 is connected with the emitter stage of audion VT3, its N pole and the base stage of audion VT3
It is connected.Meanwhile, the base stage of described audion VT1 is connected with the emitter stage of audion VT2, its colelctor electrode respectively with audion
The colelctor electrode of VT2 is connected with the positive pole of electric capacity C1, and its emitter stage is connected with comparing amplifying circuit.Described audion VT3's
Colelctor electrode is connected with the base stage of audion VT2 and the positive pole of electric capacity C4 respectively, and its emitter stage is connected with the negative pole of electric capacity C4.
Described delay startup circuit is by audion VT5, audion VT6, resistance R5, resistance R6, resistance R7, resistance R8, sliding
Dynamic rheostat RP, electric capacity C5, electric capacity C6 and diode D4 composition.
During connection, one end of described resistance R5 is connected with the colelctor electrode of audion VT5, and its other end is with diode D2's
P pole is connected.The positive pole of described electric capacity C5 is connected with the N pole of diode D3, and its negative pole is connected with the base stage of audion VT5
Connect.One end of described resistance R7 is connected with the positive pole of electric capacity C5, and its other end is connected with the emitter stage of audion VT6.Institute
State the P pole with diode D2 after resistance R6, the P pole of diode D4 to be connected, its N pole after resistance R8 with the collection of audion VT6
Electrode is connected.One end of described slide rheostat RP is connected with the P pole of diode D4, and its other end is with audion VT6's
Emitter stage is connected.The positive pole of described electric capacity C6 its negative pole that is connected with the N pole of diode D4 is extremely connected with the P of diode D2
Connect.
Meanwhile, the base stage of described audion VT5 is connected with the control end of slide rheostat RP, its colelctor electrode and audion
The emitter stage of VT4 is connected.The base stage of described audion VT6 and the negative pole of electric capacity C6 collectively constitute the output of delay startup circuit
End, during use, this outfan can be directly connected to electronic product load.The base stage of described audion VT6 also with the N pole of diode D3
It is connected.
As in figure 2 it is shown, the described amplifying circuit that compares is by operational amplifier P, audion VT7, audion VT8, resistance R9, electricity
Resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity C7, electric capacity C8, diode D5, diode D6 and two poles
Pipe D7 forms.
During connection, one end of described resistance R9 is connected with the emitter stage of audion VT1, its other end and operational amplifier
The positive input terminal of P is connected.The positive pole of described electric capacity C7 is connected with the positive input terminal of operational amplifier P, and its negative pole is through resistance
After R12, the outfan with operational amplifier P is connected.The positive pole of described electric capacity C8 negative with operational amplifier P after resistance R10
Input is connected, its minus earth.The P pole of described diode D5 is connected with the positive pole of electric capacity C8, and its N pole is through resistance R11
Base stage with audion VT7 is connected afterwards.Described resistance R13 is serially connected between the colelctor electrode of electric capacity C7 and audion VT7, described
Resistance R14 is serially connected between the outfan of operational amplifier P and the colelctor electrode of audion VT7.The P pole and three of described diode D6
The colelctor electrode of pole pipe VT7 is connected, and its N pole is connected with the emitter stage of audion VT8.The P pole of described diode D7 and three poles
The base stage of pipe VT7 is connected, and its N pole base stage with audion VT8 after resistance R15 is connected.Meanwhile, described audion VT8
Colelctor electrode be connected with the emitter stage of audion VT7, its base stage is connected with the N pole of diode D3.
The present invention can realize the soft start to electronic product, and after making the present invention switch on power, output voltage is through a startup
Process, rise to set-point with slower speed, to protect electronic product not impacted by surge.During startup,
The present invention also ensures that the optimum delay time of about 30 seconds.The present invention can also effectively carry high-tension pressure in use
Property, and can the middle zero migration of electric current be controlled within 0.5nA, ensure that what the present invention exported to electronic product
The stability of voltage and current.
As it has been described above, just can preferably realize the present invention.
Claims (4)
1. one kind based on the soft start mu balanced circuit comparing amplifying circuit, it is characterised in that: main by transformator T, diode is whole
Stream device U, audion VT4, positive pole is connected with the positive output end of diode rectifier U, negative pole is negative defeated with diode rectifier U's
Going out the electric capacity C1 that end is connected, the soft start being connected with positive pole and the negative pole of electric capacity C1 respectively processes circuit, and positive pole opens with soft
The dynamic process electric capacity C4 that circuit is connected, negative pole is connected with the negative pole of electric capacity C1, one end is connected with the positive pole of electric capacity C4, separately
Resistance R3, the P pole that one end is connected with the base stage of audion VT4 is connected with the negative pole of electric capacity C4, N pole and audion VT4
The diode D2 that emitter stage is connected, the delayed startup being connected with the emitter stage of audion VT4 and the P pole of diode D2 respectively
Circuit, the diode that P pole is connected with delay startup circuit, N pole colelctor electrode with audion VT4 after resistance R4 is connected
D3, and process, with N pole and the soft start of diode D3, the comparison amplifying circuit composition that circuit is connected respectively；Described transformator
The two ends composition power input of the former limit inductance coil of T, an input of described diode rectifier U is with transformator T's
The non-same polarity of secondary inductance coil is connected, the Same Name of Ends phase of its another input and the secondary inductance coil of transformator T
Connect.
It is the most according to claim 1 a kind of based on the soft start mu balanced circuit comparing amplifying circuit, it is characterised in that: described
Relatively amplifying circuit is by operational amplifier P, audion VT7, audion VT8, and one end is connected with soft start process circuit, another
The resistance R9 that end is connected with the positive input terminal of operational amplifier P, positive pole is connected with the positive input terminal of operational amplifier P, bears
The electric capacity C7 that pole outfan with operational amplifier P after resistance R12 is connected, positive pole after resistance R10 with operational amplifier P
Negative input end be connected, electric capacity C8, the P pole of minus earth is connected with the positive pole of electric capacity C8, N pole after resistance R11 with three
The diode D5 that the base stage of pole pipe VT7 is connected, the resistance R13 being serially connected between the colelctor electrode of electric capacity C7 and audion VT7, string
Resistance R14, the P pole being connected between the outfan of operational amplifier P and the colelctor electrode of audion VT7 and the current collection of audion VT7
The diode D6 that pole is connected, N pole is connected with the emitter stage of audion VT8, and P pole is connected with the base stage of audion VT7
Connect, diode D7 composition that N pole base stage with audion VT8 after resistance R15 is connected；The colelctor electrode of described audion VT8
Being connected with the emitter stage of audion VT7, its base stage is connected with the N pole of diode D3.
It is the most according to claim 2 a kind of based on the soft start mu balanced circuit comparing amplifying circuit, it is characterised in that: described
Soft start processes circuit by audion VT1, audion VT2, audion VT3, positive pole after resistance R1 with the current collection of audion VT2
The electric capacity C2 that pole is connected, negative pole is connected with the emitter stage of audion VT3, one end is connected with the positive pole of electric capacity C2, another
The resistance R2 that is connected with the base stage of audion VT2 of end, positive pole is connected with the colelctor electrode of audion VT3, negative pole and audion
The electric capacity C3 that the base stage of VT3 is connected, and P pole is connected with the emitter stage of audion VT3, the base stage of N pole and audion VT3
The diode D1 composition being connected；The base stage of described audion VT1 is connected with the emitter stage of audion VT2, and its colelctor electrode divides
Be not connected with the colelctor electrode of audion VT2 and the positive pole of electric capacity C1, its emitter stage after resistance R9 with operational amplifier P just
Input is connected；The colelctor electrode of described audion VT3 is connected with the base stage of audion VT2 and the positive pole of electric capacity C4 respectively,
Its emitter stage is connected with the negative pole of electric capacity C4.
It is the most according to claim 3 a kind of based on the soft start mu balanced circuit comparing amplifying circuit, it is characterised in that: described
Delay startup circuit is by audion VT5, audion VT6, and one end is connected with the colelctor electrode of audion VT5, the other end and two poles
The resistance R5 that the P pole of pipe D2 is connected, positive pole is connected with the N pole of diode D3, negative pole is connected with the base stage of audion VT5
Electric capacity C5, resistance R7, the P pole that one end is connected with the positive pole of electric capacity C5, the other end is connected with the emitter stage of audion VT6
Two poles that P pole with diode D2 is connected after resistance R6, N pole colelctor electrode with audion VT6 after resistance R8 is connected
Pipe D4, the slide rheostat RP that one end is connected with the P pole of diode D4, the other end is connected with the emitter stage of audion VT6,
And the electric capacity C6 composition that positive pole is connected with the N pole of diode D4, negative pole is connected with the P pole of diode D2；Described three poles
The base stage of pipe VT5 is connected with the control end of slide rheostat RP, and its colelctor electrode is connected with the emitter stage of audion VT4；Institute
The negative pole of the base stage and electric capacity C6 of stating audion VT6 collectively constitutes the outfan of delay startup circuit, the base stage of this audion VT6
Also it is connected with the N pole of diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610601908.7A CN106253710A (en) | 2016-07-27 | 2016-07-27 | A kind of based on the soft start mu balanced circuit comparing amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610601908.7A CN106253710A (en) | 2016-07-27 | 2016-07-27 | A kind of based on the soft start mu balanced circuit comparing amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106253710A true CN106253710A (en) | 2016-12-21 |
Family
ID=57604043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610601908.7A Pending CN106253710A (en) | 2016-07-27 | 2016-07-27 | A kind of based on the soft start mu balanced circuit comparing amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106253710A (en) |
-
2016
- 2016-07-27 CN CN201610601908.7A patent/CN106253710A/en active Pending
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161221 |
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