CN107634644A - A kind of surge mu balanced circuit - Google Patents
A kind of surge mu balanced circuit Download PDFInfo
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- CN107634644A CN107634644A CN201711049150.1A CN201711049150A CN107634644A CN 107634644 A CN107634644 A CN 107634644A CN 201711049150 A CN201711049150 A CN 201711049150A CN 107634644 A CN107634644 A CN 107634644A
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- stabiliser tube
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- 239000003381 stabilizer Substances 0.000 claims abstract description 52
- 230000005669 field effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of surge mu balanced circuit, it is related to field of circuit technology, the circuit includes：Input, output end and on-off circuit；On-off circuit includes：First resistor, the first voltage-stabiliser tube, FET and diode；The first end of first resistor is connected with the positive pole of input, and the second end of first resistor is connected with the negative electrode of the first voltage-stabiliser tube；The negative electrode of diode is connected with the drain electrode of FET, and the anode of diode is connected with the source electrode of FET；The drain electrode of FET is connected with the first end of first resistor, and the grid of FET is connected with the second end of first resistor, and the source electrode of FET is connected with the positive pole of output end；The anode of the negative pole of input, the negative pole of output end and the first voltage-stabiliser tube is grounded.Solve and be initially powered up moment, the problem of starting of oscillation is easily damaged switching tube and other components during this period using the Switching Power Supply of direct current supply, reached the effect of protection switch pipe and other components.
Description
Technical field
The present invention relates to field of circuit technology, especially a kind of surge mu balanced circuit.
Background technology
Surge refers to that the peak value beyond stationary value occurs in moment.When the electric equipment of some Large Copacities is switched on or switched off,
Due to inductance in power network be present, therefore surge voltage can be produced on power network.
Due to being initially powered up moment, exchange 380V occurs that unstable voltage and spike are done in rectification and filtering moment
The voltage such as disturb, if the Switching Power Supply starting of oscillation during this period for taking direct current 510V to power, is easily damaged switching tube and other yuan
Device.
The content of the invention
The present invention is regarding to the issue above and technical need, it is proposed that a kind of surge mu balanced circuit.
Technical scheme is as follows：
A kind of surge mu balanced circuit, the circuit include：For providing the input of dc source, being opened for pole after connection
The output end in powered-down source and the on-off circuit being connected between the input and the output end；
The on-off circuit includes：First resistor, the first voltage-stabiliser tube, FET and diode；
The first end of the first resistor is connected with the positive pole of the input, the second end of the first resistor with it is described
The negative electrode of first voltage-stabiliser tube is connected；The negative electrode of the diode is connected with the drain electrode of the FET, the sun of the diode
Pole is connected with the source electrode of the FET；The drain electrode of the FET is connected with the first end of the first resistor, described
The grid of FET is connected with the second end of the first resistor, the source electrode of the FET and the positive pole of the output end
It is connected；The anode of the negative pole of the input, the negative pole of the output end and first voltage-stabiliser tube is grounded.
Its further technical scheme is：The on-off circuit also includes：Second resistance；The second resistance is connected to institute
State between the grid of FET and source electrode.
Its further technical scheme is：The on-off circuit also includes：Second voltage-stabiliser tube；The moon of second voltage-stabiliser tube
Pole is connected with the grid of the FET, and the anode of second voltage-stabiliser tube is connected with the source electrode of the FET.
Its further technical scheme is：The magnitude of voltage of first voltage-stabiliser tube is predetermined threshold, and the predetermined threshold is
Determined according to the magnitude of voltage of the dc source.
Its further technical scheme is：First voltage-stabiliser tube is composed in series by n voltage-stabiliser tube, and the n steady
The magnitude of voltage sum of pressure pipe is the predetermined threshold, and n is positive integer.
The method have the benefit that：
The present invention is stable in dc source by setting a surge mu balanced circuit between dc source and Switching Power Supply
Afterwards, FET is turned on, and dc source is powered for Switching Power Supply, is solved and is being initially powered up moment, using direct current supply
Switching Power Supply the problem of starting of oscillation is easily damaged switching tube and other components during this period, protection switch pipe and other are reached
The effect of the stability of component and raising Switching Power Supply.
Brief description of the drawings
Fig. 1 is a kind of circuit diagram of surge mu balanced circuit.
Fig. 2 is the circuit diagram of another surge mu balanced circuit.
Fig. 3 is the circuit diagram of another surge mu balanced circuit.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is a kind of circuit diagram of surge mu balanced circuit, as shown in figure 1, the surge mu balanced circuit includes：It is straight for providing
Flow the input 110 of power supply, the output end 120 for connecting valve power supply and be connected between input 110 and output end 120
On-off circuit 130.
Wherein, on-off circuit 130 includes：First resistor 131, the first voltage-stabiliser tube 132, FET 133 and diode
134。
As shown in figure 1, the first end of first resistor 131 is connected with the positive pole of input 110, the second of first resistor 131
End is connected with the negative electrode of the first voltage-stabiliser tube 132, and the negative electrode of diode 134 is connected with the drain electrode of FET 133, diode 134
Anode be connected with the source electrode of FET 133, the drain electrode of FET 133 is connected with the first end of first resistor 131, field effect
Should the grid of pipe 133 be connected with the second end of first resistor 131, the source electrode of FET 133 and the positive pole phase of output end 120
Even, the anode of the negative pole of input 110, the negative pole of output end 120 and the first voltage-stabiliser tube 132 is grounded.
The effect of first resistor 131 is sampling partial pressure.
The determination conduction threshold of the effect of first voltage-stabiliser tube 132, voltage stabilizing is carried out according to conduction threshold, because dc source exists
It is that curve rises to open moment, when the voltage of the first voltage-stabiliser tube 132 reaches conduction threshold, shows that dc source rises to surely
Definite value, now FET 133 turn on, dc source be Switching Power Supply power supply.
The effect of diode 134 is to absorb damping.
Optionally, as shown in Fig. 2 on-off circuit 130 also includes：Second resistance 135, second resistance 135 are connected to field effect
Should be between the grid and source electrode of pipe 133.
Second resistance 135 absorbs protective resistance for the control pole of FET 133.
Optionally, as shown in Fig. 2 on-off circuit 130 also includes：Second voltage-stabiliser tube 136, the negative electrode of the second voltage-stabiliser tube 136
It is connected with the grid of FET 133, the anode of the second voltage-stabiliser tube 136 is connected with the source electrode of FET 133.
Second voltage-stabiliser tube 136 is used for the control pole voltage limit for ensuring FET 133.
Optionally, the magnitude of voltage of the first voltage-stabiliser tube 132 is predetermined threshold, and predetermined threshold is the magnitude of voltage according to dc source
Determine, such as：The magnitude of voltage of dc source is 510V, and predetermined threshold could be arranged to 400V.
Optionally, the first voltage-stabiliser tube 132 can be composed in series by n voltage-stabiliser tube, and magnitude of voltage sum of n voltage-stabiliser tube etc.
In predetermined threshold, n is positive integer.
Exemplary, as shown in figure 3,380V alternating currents obtain 510V direct current, direct current 510V through over commutation and filtering
Surge mu balanced circuit is connected to, the surge mu balanced circuit is direct current 510V power 300W surge voltage stabilizing copped wave output circuit.Wherein,
Input plug-in unit J1 to input for direct current 510V, output inserter J2 exports for direct current 510V, and direct current 510V passes through resistance R1 (2W 220k)
Voltage stabilizing, voltage-stabiliser tube Z1, voltage-stabiliser tube are carried out by voltage-stabiliser tube Z1 to the voltage-stabiliser tube Z6 492V being composed in series voltage-stabiliser tube after sampling partial pressure
Z2, voltage-stabiliser tube Z3, voltage-stabiliser tube Z4, voltage-stabiliser tube Z5, voltage-stabiliser tube Z6 are that " C82 5T " voltage-stabiliser tube, voltage-stabiliser tube Z7 are " C15 5T "
Voltage-stabiliser tube, resistance R2 (0.25W 510k) is connected between the grid of NMOS tube and source electrode, the model that NMOS tube is chosen
K3878, diode D1 (model 1N4007) negative electrode are connected with the drain electrode of NMOS tube, diode D1 anode and NMOS tube
Source electrode is connected, and the source electrode of NMOS tube is connected to output inserter J2 positive pole.Output inserter J2 is connected with 300W Switching Power Supply.Start
During power supply, the curved rising of DC voltage, when DC voltage reaches 492V, NMOS tube conducting.Input plug-in unit J1 phases in Fig. 3
When in input 110, output inserter J2 is equivalent to output end 120, and resistance R1 is equivalent to first resistor 131, the voltage-stabiliser tube of series connection
Z1 to voltage-stabiliser tube Z6 is overall equivalent to the first voltage-stabiliser tube 132, voltage-stabiliser tube Z7 equivalent to the second voltage-stabiliser tube 136, resistance R2 equivalent to
Second resistance 135, NMOS tube is equivalent to FET 133, and diode D1 is equivalent to diode 134.
The exemplary only explanation of parameter in the present embodiment, in actual applications, can be according to the voltage of dc source
Value determines the model and parameter of the component in surge mu balanced circuit.
Above-described is only the preferred embodiments of the present invention, and the invention is not restricted to above example.It is appreciated that this
Other improvement and become that art personnel directly export or associated without departing from the spirit and concept in the present invention
Change, be considered as being included within protection scope of the present invention.
Claims (5)
1. a kind of surge mu balanced circuit, it is characterised in that the circuit includes：For providing the input of dc source, being used for
The output end of connecting valve power supply and the on-off circuit being connected between the input and the output end；
The on-off circuit includes：First resistor, the first voltage-stabiliser tube, FET and diode；
The first end of the first resistor is connected with the positive pole of the input, the second end of the first resistor and described first
The negative electrode of voltage-stabiliser tube is connected；The negative electrode of the diode is connected with the drain electrode of the FET, the anode of the diode with
The source electrode of the FET is connected；The drain electrode of the FET is connected with the first end of the first resistor, the field effect
Should the grid of pipe be connected with the second end of the first resistor, the source electrode of the FET and the positive pole phase of the output end
Even；The anode of the negative pole of the input, the negative pole of the output end and first voltage-stabiliser tube is grounded.
2. circuit according to claim 1, it is characterised in that the on-off circuit also includes：Second resistance；Described second
Resistance is connected between the grid and source electrode of the FET.
3. circuit according to claim 1, it is characterised in that the on-off circuit also includes：Second voltage-stabiliser tube；Described
The negative electrode of two voltage-stabiliser tubes is connected with the grid of the FET, the anode of second voltage-stabiliser tube and the source of the FET
Extremely it is connected.
4. circuit according to claim 1, it is characterised in that the magnitude of voltage of first voltage-stabiliser tube is predetermined threshold, institute
Stating predetermined threshold is determined according to the magnitude of voltage of the dc source.
5. circuit according to claim 4, it is characterised in that first voltage-stabiliser tube is composed in series by n voltage-stabiliser tube
, the magnitude of voltage sum of the n voltage-stabiliser tube is the predetermined threshold, and n is positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049150.1A CN107634644A (en) | 2017-10-31 | 2017-10-31 | A kind of surge mu balanced circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711049150.1A CN107634644A (en) | 2017-10-31 | 2017-10-31 | A kind of surge mu balanced circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107634644A true CN107634644A (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711049150.1A Pending CN107634644A (en) | 2017-10-31 | 2017-10-31 | A kind of surge mu balanced circuit |
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| CN (1) | CN107634644A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391749A (en) * | 2018-10-09 | 2019-10-29 | 华北科技学院 | A kind of wide input switch power supply of high voltage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576041A (en) * | 2008-05-06 | 2009-11-11 | 创科实业有限公司 | Battery charging and isolation system for gas engine |
| CN201869094U (en) * | 2010-10-15 | 2011-06-15 | 明达机电制造（郑州）有限公司 | Voltage-stabilizing circuit based on MOS tube |
| CN201887674U (en) * | 2010-03-20 | 2011-06-29 | 厦门市英诺尔电子科技有限公司 | Simple regulated power supply |
| CN202997528U (en) * | 2012-12-18 | 2013-06-12 | 天津市百利电气有限公司 | Simple alternating-current rectification protection power supply device with under-voltage protection function |
| CN203415971U (en) * | 2013-07-08 | 2014-01-29 | 中国航空无线电电子研究所 | Anti-overvoltage surge protection control circuit designed based on field-effect transistor |
| CN106026648A (en) * | 2016-06-14 | 2016-10-12 | 四川福豆科技有限公司 | Server based on educational resource sharing system |
-
2017
- 2017-10-31 CN CN201711049150.1A patent/CN107634644A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576041A (en) * | 2008-05-06 | 2009-11-11 | 创科实业有限公司 | Battery charging and isolation system for gas engine |
| CN201887674U (en) * | 2010-03-20 | 2011-06-29 | 厦门市英诺尔电子科技有限公司 | Simple regulated power supply |
| CN201869094U (en) * | 2010-10-15 | 2011-06-15 | 明达机电制造（郑州）有限公司 | Voltage-stabilizing circuit based on MOS tube |
| CN202997528U (en) * | 2012-12-18 | 2013-06-12 | 天津市百利电气有限公司 | Simple alternating-current rectification protection power supply device with under-voltage protection function |
| CN203415971U (en) * | 2013-07-08 | 2014-01-29 | 中国航空无线电电子研究所 | Anti-overvoltage surge protection control circuit designed based on field-effect transistor |
| CN106026648A (en) * | 2016-06-14 | 2016-10-12 | 四川福豆科技有限公司 | Server based on educational resource sharing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391749A (en) * | 2018-10-09 | 2019-10-29 | 华北科技学院 | A kind of wide input switch power supply of high voltage |
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