CN106100366A - A kind of soft start mu balanced circuit based on low-pass filter circuit - Google Patents
A kind of soft start mu balanced circuit based on low-pass filter circuit Download PDFInfo
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- CN106100366A CN106100366A CN201610601814.XA CN201610601814A CN106100366A CN 106100366 A CN106100366 A CN 106100366A CN 201610601814 A CN201610601814 A CN 201610601814A CN 106100366 A CN106100366 A CN 106100366A
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- pole
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- electric capacity
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- resistance
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- 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
-
- 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
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/062—Avoiding or suppressing excessive transient voltages or currents
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of soft start mu balanced circuit based on low-pass filter 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, low-pass filter 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 soft start voltage stabilizing based on low-pass filter circuit electricity
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 soft start mu balanced circuit based on low-pass filter 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 soft start mu balanced circuit based on low-pass filter 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
Be connected with the negative pole of electric capacity C4 after the most low-pass filtered circuit of resistance R3, P that the base stage of pipe VT4 is connected, N pole and audion
The diode D2 that the emitter stage of VT4 is connected, respectively with prolonging that the emitter stage of audion VT4 and the P pole of diode D2 are connected
Time start-up circuit, and P pole is connected with delay startup circuit, N pole colelctor electrode with audion VT4 after resistance R4 is connected
Diode D3 composition；The two ends composition power input of the former limit inductance coil of described transformator T, described diode rectifier
One input of U is connected with the non-same polarity of the secondary inductance coil of transformator T, its another input and transformator T
The Same Name of Ends of secondary inductance coil be connected；The N pole of described diode D3 processes circuit with soft start and is connected.
Further, described low-pass filter circuit is connected with the negative pole of electric capacity C4 by audion VT7, audion VT8, one end
Connect, inductance L that the other end is connected with the base stage of audion VT7, positive pole negative pole with electric capacity C4 after resistance R9 is connected, negative
Electric capacity C7, the P pole that pole is connected with the colelctor electrode of audion VT7 positive pole with electric capacity C7 after resistance R10 is connected, N pole with
Diode D5, the P pole that the emitter stage of audion VT8 is connected is connected with the emitter stage of audion VT7, N pole is after resistance R12
The diode D6 being connected with the colelctor electrode of audion VT8, positive pole is connected with the N pole of diode D6, negative pole is after resistance R13
The electric capacity C8 being connected with the base stage of audion VT7, one end is connected with the negative pole of electric capacity C8, the other end and audion VT8
The resistance R14 that colelctor electrode is connected, positive pole is connected with the base stage of audion VT8, negative pole after resistance R11 with audion VT8
The electric capacity C9 that is connected of emitter stage, and P pole colelctor electrode with audion VT8 after resistance R15 is connected, N pole and electric capacity
The diode D7 composition that the negative pole of C9 is connected；The negative pole of described electric capacity C9 is connected with the P pole of diode D2.
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, its emitter stage and two
The N pole of pole pipe D3 is connected；The colelctor electrode of described audion VT3 respectively with base stage and the positive pole phase of electric capacity C4 of audion VT2
Connecting, 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) circuit can also be filtered processing by the present invention, can filter the ripple affecting signal quality, thus can make signal
Become more steady.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the circuit diagram of the low-pass filter 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 soft start mu balanced circuit based on low-pass filter circuit of the present invention, 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, low-pass filter 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 is through low pass
After filter circuit, the negative pole with electric capacity C4 is connected, and its N pole is connected with the emitter stage of audion VT4；Described delayed startup electricity
Road is connected with the emitter stage of audion VT4 and the P pole of diode D2 respectively.The P pole of described diode D3 and delayed startup electricity
Road is connected, and its N pole colelctor electrode with audion VT4 after resistance R4 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 the N pole of diode D3.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, described low-pass filter circuit is by audion VT7, audion VT8, inductance L, resistance R9, resistance R10,
Resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, electric capacity C7, electric capacity C8, electric capacity C9, diode D5, diode
D6 and diode D7 composition.
During connection, one end of described inductance L is connected with the negative pole of electric capacity C4, its other end and the base stage of audion VT7
It is connected.The positive pole of described electric capacity C7 negative pole with electric capacity C4 after resistance R9 is connected, the current collection of its negative pole and audion VT7
Pole is connected.The P pole of described diode D5 positive pole with electric capacity C7 after resistance R10 is connected, and its N pole is with audion VT8's
Emitter stage is connected.The P pole of described diode D6 is connected with the emitter stage of audion VT7, its N pole after resistance R12 with three
The colelctor electrode of pole pipe VT8 is connected.The positive pole of described electric capacity C8 is connected with the N pole of diode D6, and its negative pole is after resistance R13
It is connected with the base stage of audion VT7.One end of described resistance R14 is connected with the negative pole of electric capacity C8, its other end and three poles
The colelctor electrode of pipe VT8 is connected.The positive pole of described electric capacity C9 is connected with the base stage of audion VT8, and its negative pole is after resistance R11
It is connected with the emitter stage of audion VT8.The P pole of described diode D7 colelctor electrode with audion VT8 after resistance R15 is connected
Connecing, its N pole is connected with the negative pole of electric capacity C9.Meanwhile, the negative pole of described electric capacity C9 is connected with the P pole of diode D2.
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.Circuit can be filtered processing by the present invention, can filter impact letter
The ripple of number quality, thus signal can be made to become more steady.
As it has been described above, just can preferably realize the present invention.
Claims (4)
1. a soft start mu balanced circuit based on low-pass filter 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
Be connected with the negative pole of electric capacity C4 after the most low-pass filtered circuit of resistance R3, P that one end is connected with the base stage of audion VT4, N
The diode D2 that pole is connected with the emitter stage of audion VT4, respectively with emitter stage and the P pole of diode D2 of audion VT4
The delay startup circuit being connected, and P pole is connected with delay startup circuit, N pole after resistance R4 with the collection of audion VT4
The diode D3 composition that electrode is connected；The two ends composition power input of the former limit inductance coil of described transformator T, described two
One input of pole pipe commutator U is connected with the non-same polarity of the secondary inductance coil of transformator T, its another input
It is connected with the Same Name of Ends of the secondary inductance coil of transformator T；The N pole of described diode D3 processes circuit with soft start and is connected
Connect.
A kind of soft start mu balanced circuit based on low-pass filter circuit the most according to claim 1, it is characterised in that: described
Low-pass filter circuit is by audion VT7, audion VT8, and one end is connected with the negative pole of electric capacity C4, the other end and audion VT7
The inductance L that is connected of base stage, positive pole negative pole with electric capacity C4 after resistance R9 is connected, the current collection of negative pole and audion VT7
Electric capacity C7, the P pole that pole is connected positive pole with electric capacity C7 after resistance R10 is connected, the emitter stage phase of N pole and audion VT8
Diode D5, the P pole connected is connected with the emitter stage of audion VT7, N pole after resistance R12 with the colelctor electrode of audion VT8
The diode D6 being connected, positive pole is connected with the N pole of diode D6, negative pole after resistance R13 with the base stage phase of audion VT7
The electric capacity C8 connected, the resistance that one end is connected with the negative pole of electric capacity C8, the other end is connected with the colelctor electrode of audion VT8
R14, the electricity that positive pole is connected with the base stage of audion VT8, negative pole emitter stage with audion VT8 after resistance R11 is connected
Hold C9, and P pole colelctor electrode with audion VT8 after resistance R15 is connected, N pole is connected two with the negative pole of electric capacity C9
Pole pipe D7 forms；The negative pole of described electric capacity C9 is connected with the P pole of diode D2.
A kind of soft start mu balanced circuit based on low-pass filter circuit the most according to claim 2, 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
Not being connected with the colelctor electrode of audion VT2 and the positive pole of electric capacity C1, its emitter stage is connected with the N pole of diode D3；Described
The colelctor electrode of audion VT3 is connected with the base stage of audion VT2 and the positive pole of electric capacity C4 respectively, and its emitter stage is with electric capacity C4's
Negative pole is connected.
A kind of soft start mu balanced circuit based on low-pass filter circuit the most according to claim 3, 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 |
|---|---|---|---|
| CN201610601814.XA CN106100366A (en) | 2016-07-27 | 2016-07-27 | A kind of soft start mu balanced circuit based on low-pass filter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610601814.XA CN106100366A (en) | 2016-07-27 | 2016-07-27 | A kind of soft start mu balanced circuit based on low-pass filter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106100366A true CN106100366A (en) | 2016-11-09 |
Family
ID=57449115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610601814.XA Pending CN106100366A (en) | 2016-07-27 | 2016-07-27 | A kind of soft start mu balanced circuit based on low-pass filter circuit |
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| CN (1) | CN106100366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108271097A (en) * | 2018-02-05 | 2018-07-10 | 林红英 | A kind of car audio system |
-
2016
- 2016-07-27 CN CN201610601814.XA patent/CN106100366A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108271097A (en) * | 2018-02-05 | 2018-07-10 | 林红英 | A kind of car audio system |
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Application publication date: 20161109 |
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