CN103887965A - Power supply design circuit with high-level EMC and safety regulation performance - Google Patents
Power supply design circuit with high-level EMC and safety regulation performance Download PDFInfo
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Abstract
The invention, which is suitable of the rail transport industry, provides a power supply design circuit with the high-level electro magnetic compatibility and safety regulation performance. The power supply design circuit comprises an input unit, an isolation filtering protection unit and an output unit, wherein the units are successively connected. The isolation filtering protection unit includes an electromagnetic anti-interference protection circuit, an electromagnetic interference filtering circuit, and an isolation circuit; the electromagnetic anti-interference protection circuit clamps and discharges a common-mode interference signal and a differential-mode interference signal that are outputted by the input unit; and the electromagnetic interference filtering circuit carries out common-mode filtering on an input signal and an output signal of the isolation circuit and carries out differential-mode filtering on the input signal of the isolation. Because of the electromagnetic anti-interference protection circuit and the isolation circuit, the input unit and the output unit are isolated a PCB board space design is carried out, so that the high isolation insulated voltage requirement can be met and the voltage-resistant property can be improved. Meanwhile, the electromagnetic interference filtering circuit filters an interference signal outputted by the input unit, thereby meeting the limit value requirements of radiation and conduction of the circuit.
Description
Technical field
The invention belongs to electronic device field, relate in particular to a kind of Power Management Design circuit with high-grade EMC and safety performance.
Background technology
At present, being applied to, track traffic industry electronic equipment is more and more, and owing to again and again occurring security incident on railway, track traffic industry EMC (Electro Magnetic Compatibility, Electro Magnetic Compatibility) requires stricter.As shown in Figure 1, be the circuit theory diagrams that a tradition has the power circuit of safety performance design, isolation design is not carried out in its input and output, cause input and the directly conducting of output ground, as long as there is high pressure outside, directly the internal circuit of access arrangement, causes machine breakdown, and the spacing that insulate can not meet industry requirement not, withstand voltagely do not reach requirement in the time of PCB layout.As shown in Figure 2; for another tradition has the circuit theory diagrams of the power circuit of EMC performance; wherein; the malposition that in circuit, components and parts are put; see shown in figure; diode D11 operate time is ps level; and piezo-resistance RV1 operate time be μ s level, in addition, under thunderbolt state; diode D11 will move before piezo-resistance RV1; but because the resistance to stream of diode D11 is too little, easily breakdown, piezo-resistance RV1 loses protective effect; so that lack common mode or differential mode filter protective circuit, cause being finally difficult to the effect that reaches desirable.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of EMC immunity to interference, the Power Management Design circuit with high-grade EMC and safety performance that withstand voltage properties is strong, is intended to solve circuit design in the Power Management Design circuit that tradition has high-grade EMC and safety performance unreasonable and the EMC immunity to interference, the weak problem of withstand voltage properties that cause.
The embodiment of the present invention is to realize like this, a kind of Power Management Design circuit with high-grade EMC and safety performance, comprise the input unit connecting successively, isolation filter protected location and output unit, described isolation filter protected location comprises the electromagnetic immunity protective circuit being connected between the output of described input unit and the input of output unit, electromagnetic interference filter circuit and the buffer circuit that described input unit and output unit are isolated, common mode interference signal and the differential mode interference signal clamper that described electromagnetic immunity protective circuit is exported described input unit also released, clamper refers to the current potential of certain point is limited in to the measure more than current potential of regulation, described electromagnetic interference filter circuit is carried out the input signal of described buffer circuit and output signal common mode filtering and the input signal of described buffer circuit is carried out to differential mode filtering.
In a preferred embodiment, electromagnetic immunity protective circuit comprises the common mode protective circuit for clamper the described common mode disturbance voltage of releasing, for the first differential mode protective circuit and the second differential mode protective circuit of clamper the described differential mode disturbance volt of releasing, described electromagnetic interference filter circuit comprises the differential mode filter circuit for the differential mode interference of buffer circuit input signal described in filtering, for the first input common mode filtering circuit of the common mode disturbances of the input signal of buffer circuit described in filtering and the second input common mode filtering circuit and for the output common mode filter circuit of the common mode disturbances of the output signal of buffer circuit described in filtering, described common mode protective circuit, the first differential mode protective circuit, differential mode filter circuit, the first input common mode filtering circuit, the second differential mode protective circuit, the second input common mode filtering circuit, buffer circuit and output common mode filter circuit are connected in turn between the output of described input unit and the input of output unit.
In a preferred embodiment, in the wiring of pcb board, the wire distribution distance of described input unit and output unit is no less than 400 Mills.
In a preferred embodiment, the wire distribution distance in the positive pole of described input unit wiring, negative pole wiring and described isolation filter protected location between pin and the ground end of each components and parts is greater than 110 Mills.
In a preferred embodiment; described common mode protective circuit comprises piezo-resistance RV3 and piezo-resistance RV2; the first end of described piezo-resistance RV3, the first end of described piezo-resistance RV2 are connected with positive pole, the negative pole of described input unit respectively, the second end ground connection of the second end of described piezo-resistance RV3 and described piezo-resistance RV2.
Described isolation filter protected location also comprises that first end is connected to the fuse F10 of described input unit positive pole, and described the first differential mode protective circuit comprises the piezo-resistance RV1 between the second end and the negative pole of described input unit that is connected to described fuse F10.
In a preferred embodiment, described isolation filter protected location also comprises diode D10, and described differential mode filter circuit comprises differential mode inductance L3, differential mode inductance L4 and capacitor C 3, wherein,
Described diode D10 anode is connected with the second end of described fuse F10, the negative electrode of described diode D10 is connected with described differential mode inductance L3 first end, described differential mode inductance L3 the second end is connected with the first end of described capacitor C 3, the second end of described capacitor C 3 is connected with the first end of described differential mode inductance L4, and the second end of described differential mode inductance L4 is connected with the negative pole of described input unit.
In a preferred embodiment, described the first input common mode filtering circuit comprises common mode inductance L1, and two inputs of described common mode inductance L1 are connected with first end, second end of described capacitor C 3 respectively;
Described the second differential mode protective circuit is Transient Suppression Diode D11, described Transient Suppression Diode D11 first end is connected with the first output of described common mode inductance L1, and the second end of described Transient Suppression Diode D11 is connected with inputting with the second output of described common mode inductance L1 simultaneously;
Described the second input common mode filtering circuit comprises capacitor C 1 and capacitor C 7, the first end of described capacitor C 1, the first end of described capacitor C 7 are connected with the first output, the second output of described common mode inductance L1 respectively, the second end ground connection of the second end of described capacitor C 1 and capacitor C 7.
In a preferred embodiment, described buffer circuit electrode input end, negative input are connected with the first output, the second output of described common mode inductance L1 respectively, described output common mode filter circuit comprises capacitor C 2 and capacitor C 8, the first end of described capacitor C 2 is connected with described buffer circuit cathode output end, the first end of described capacitor C 8 is connected with the cathode output end of described buffer circuit, the second end ground connection of the second end of described capacitor C 2 and capacitor C 8.
In a preferred embodiment; described isolation filter protected location also comprises the residual voltage bleeder resistance R1 in parallel with described Transient Suppression Diode D11 and electrochemical capacitor CE6; described electrochemical capacitor CE6 is in parallel with described residual voltage bleeder resistance R1, and the positive pole of described electrochemical capacitor CE6 is connected with the first output of described common mode inductance L1.
In a preferred embodiment; described isolation filter protected location also comprises electrochemical capacitor CE1 and the filtering output capacitance C6 in parallel with it; the positive pole of described electrochemical capacitor CE1 is connected with described buffer circuit cathode output end; the negative pole of described electrochemical capacitor CE1 is connected with described buffer circuit cathode output end and ground connection, and described output unit is connected to the cathode output end of buffer circuit 260.
The above-mentioned Power Management Design circuit with high-grade EMC and safety performance is isolated input unit and output unit by electromagnetic immunity protective circuit and buffer circuit are set; and carry out the design of pcb board spacing; make it meet larger isolated insulation voltage; improve withstand voltage properties; electromagnetic interference filter circuit is carried out filtering to the interference signal of input unit output simultaneously; meet the EMC immunity to interference of DC power supply, make to meet the radiation of circuit and the limit value requirement of conduction.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of the conventional safety performance power circuit that provides of a prior art;
Fig. 2 is the power circuit principle figure with EMC performance that another prior art provides;
Fig. 3 is the circuit module figure of the Power Management Design circuit with high-grade EMC and safety performance that provides of the embodiment of the present invention;
Fig. 4 is the Power Management Design circuit pcb board wire structures block diagram with high-grade EMC and safety performance that another embodiment of the present invention provides;
Fig. 5 is the Power Management Design circuit pcb board wire structures block diagram with high-grade EMC and safety performance that the embodiment of the present invention provides;
Fig. 6 is the schematic diagram of the Power Management Design circuit with high-grade EMC and safety performance that provides of the embodiment of the present invention.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 3, a kind of Power Management Design circuit with high-grade EMC and safety performance, comprises the input unit 100, isolation filter protected location 200 and the output unit 300 that connect successively.
Isolation filter protected location 200 comprises the electromagnetic immunity protective circuit 220 being connected between the output of input unit 100 and the input of output unit 300, electromagnetic interference filter circuit 240 and the buffer circuit 260 that input unit 100 and output unit 300 are isolated, the common mode interference signal that electromagnetic immunity protective circuit 220 is exported input unit 100 and differential mode interference signal clamper are also released, clamper refers to the current potential of certain point is limited in to the measure more than current potential of regulation, electromagnetic interference filter circuit 240 is carried out the input signal of buffer circuit 260 and output signal common mode filtering and the input signal of buffer circuit 260 is carried out to differential mode filtering.
Electromagnetic immunity protective circuit 220 and buffer circuit 260 are set isolates input unit 100 and output unit 300; and carry out the design of pcb board spacing; make it meet larger isolated insulation voltage; improve withstand voltage properties; electromagnetic interference filter circuit 220 simultaneously, the voltage disturbance signal that input unit 100 is inputted carries out filtering.Meet EMC Requirements, particularly the EMC Requirements of the DC power supply in track traffic.
In a preferred embodiment, electromagnetic immunity protective circuit 220 comprises the common mode protective circuit 222 for clamper the common mode disturbance voltage of releasing, for the first differential mode protective circuit 224 and the second differential mode protective circuit 226 of clamper the differential mode disturbance volt of releasing, electromagnetic interference filter circuit 240 comprises the differential mode filter circuit 242 for the differential mode interference of filtering buffer circuit 260 input signals, for the first input common mode filtering circuit 244 and the second input common mode filtering circuit 246 of the common mode disturbances of the input signal of buffer circuit 260 described in filtering, be used for the output common mode filter circuit 248 of the common mode disturbances of the output signal of filtering buffer circuit 260.Common mode protective circuit 222, the first differential mode protective circuit 224, differential mode filter circuit 242, the first input common mode filtering circuit 244, the second differential mode protective circuit 226, the second input common mode filtering circuit 246, buffer circuit 260 and output common mode filter circuit 248 are connected between the output of input unit 100 and the input of output unit 300.In the present embodiment, buffer circuit 260 is voltage isolation module, for input signal is changed, input signal and output signal is kept apart; The common mode protective circuit 222, the first differential mode protective circuit 224 and the second differential mode protective circuit 226 that are arranged on the Power Management Design circuit front-end with high-grade EMC and safety performance are done electromagnetic immunity protection; ensure the withstand voltage properties of circuit; thereafter, differential mode filter circuit 242, the first input common mode filtering circuit 244, the second input common mode filtering circuit 246 and output common mode filter circuit 248 are to being carried out filtering and residual voltage is released by the voltage after electromagnetic immunity protective circuit 220 clampers.
As shown in Figure 4,5, in the wiring of pcb board, the wire distribution distance H of input unit 100 and output unit 300 is no less than 400 Mills.
The above-mentioned Power Management Design circuit with high-grade EMC and safety performance is by by its input unit 100 and output unit 300, the wire distribution distance in the wiring of pcb board is no less than 400 Mills, the signal that prevents input is coupled in output again, the immunity to interference that improves the Power Management Design circuit with high-grade EMC and safety performance, makes to meet the radiation of circuit and the limit value requirement of conduction.
Fig. 4 and Fig. 5 distribute and show two kinds of pcb board wire structures block diagrams of Power Management Design circuit with high-grade EMC and safety performance, input unit 100 and output unit 300 are in the time of layout, both circuit need to widen wire distribution distance H as far as possible, making minimum is 400 Mills, that is to say after input unit 100 is protected with clamper after filtering and export, output unit 300 need to be kept apart with input unit 100, the signal that prevents input is coupled in output again, preferably, as shown in Figure 4, the relative both sides that input unit 100 and output unit 300 are designed to be positioned at isolation filter protected location 200 are to widen apart from doing anti-tampering protection.
In a preferred embodiment, the wire distribution distance in the positive pole of input unit 100 wiring, negative pole wiring and isolation filter protected location 200 between the pin of each components and parts and ground end GND_BASE is greater than 110 Mill (not shown).Each components and parts in guarantee input unit 100 positive poles, negative pole and isolation filter protected location 200 are to the not Discharge Phenomena of alternating voltage that applies 1500V between ground; meet larger isolated insulation voltage; improve withstand voltage properties, made to meet the radiation of circuit and the limit value requirement of conduction.
As shown in Figure 6; in a preferred embodiment; common mode protective circuit 222 is connected with input unit 100 and is positioned at the front end of isolation filter protected location 200 near input unit 100; common mode protective circuit 222 comprises piezo-resistance RV3 and piezo-resistance RV2; the first end of piezo-resistance RV3, the first end of piezo-resistance RV2 are connected with positive pole, the negative pole of input unit 100 respectively, the second end of piezo-resistance RV3, the second end ground connection GND_BASE of piezo-resistance RV2.Piezo-resistance RV3 and piezo-resistance RV2 carry out clamper to the common mode disturbance voltage of input, and this scheme can be passed through the disturbed test of common mode 2000V voltage.
In a preferred embodiment; isolation filter protected location 200 also comprises that first end is connected to the fuse F10 of input unit 100 positive poles, and the first differential mode protective circuit 224 comprises the piezo-resistance RV1 being connected between the second end of fuse F10 and the negative pole of input unit 100.In other embodiments, fuse F10 can replace with fuse.
In a preferred embodiment, isolation filter protected location 200 also comprises diode D10, and D10 is anti-reverse diode, and differential mode filter circuit 242 comprises differential mode inductance L3, differential mode inductance L4 and capacitor C 3.Diode D10 anode is connected with the second end of fuse F10, the negative electrode of diode D10 is connected with differential mode inductance L3 first end, described differential mode inductance L3 the second end is connected with the first end of capacitor C 3, the second end of capacitor C 3 is connected with the first end of differential mode inductance L4, and the second end of differential mode inductance L4 is connected with the negative pole of input unit 100.Capacitor C 3 is X electric capacity, for suppressing differential mode interference.
In a preferred embodiment, the first input common mode filtering circuit 244 comprises common mode inductance L1, and two inputs of common mode inductance L1 are connected with first end, second end of capacitor C 3 respectively.The second differential mode protective circuit 226 is Transient Suppression Diode D11; Transient Suppression Diode D11 first end is connected with the first output of common mode inductance L 1, and the second end of Transient Suppression Diode D11 is connected with the second output and the input ground GND_IN of common mode inductance L 1 simultaneously.The second input common mode filtering circuit 246 comprises capacitor C 1 and capacitor C 7, the first end of capacitor C 1, the first end of capacitor C 7 are connected with the first output, second output of common mode inductance L 1 respectively, the second end ground connection GND_BASE of the second end of capacitor C 1 and capacitor C 7.
In a preferred embodiment, buffer circuit 260 electrode input ends, negative input are connected with the first output, second output of common mode inductance L 1 respectively.
Piezo-resistance RV1 in the first differential mode protective circuit 224 and the second differential mode protective circuit 226 carries out clamper to the differential mode disturbance volt of input; Transient Suppression Diode D11 releases the remaining residual voltage after clamper, and this scheme can be passed through the disturbed test of differential mode 1000V voltage.
In the present embodiment; when differential mode interference signal enters the Power Management Design circuit with high-grade EMC and safety performance; piezo-resistance RV1 moves relatively low differential mode interference clamper voltage; differential mode inductance L3 and differential mode inductance L4 also have and hinder the variation of disturbing simultaneously; if voltage transient twin zener dioder D11 will puncture the action differential mode energy of releasing after differential mode inductance L3 and differential mode inductance L4; differential mode voltage is reduced to the clamp voltage of Transient Suppression Diode D11, thereby late-class circuit is protected.
In a preferred embodiment, buffer circuit 260 electrode input ends, negative input are connected with the first output, second output of common mode inductance L 1 respectively, output common mode filter circuit 248 comprises capacitor C 2 and capacitor C 8, the first end of capacitor C 2 is connected with buffer circuit 260 cathode output ends, the first end of capacitor C 8 is connected with the cathode output end of buffer circuit 260, the second end ground connection GND_BASE of the second end of capacitor C 2 and capacitor C 8.Capacitor C 1, capacitor C 2, capacitor C 7 and capacitor C 8 are Y electric capacity, for suppressing common mode disturbances.
In this enforcement; when common mode disturbance voltage enters the Power Management Design circuit with high-grade EMC and safety performance; piezo-resistance RV3 and piezo-resistance RV2 action; common mode disturbance voltage clamper is arrived to the maximum clamp voltage to piezo-resistance RV3 and piezo-resistance RV2; interference after piezo-resistance RV3 and piezo-resistance RV2 enters common mode inductance L1; the characteristic of common mode inductance L1 can stop the variation of interference; the rise time of voltage is slowed down; part residual voltage can, by capacitor C 1 and capacitor C 7 the earth of releasing, be without prejudice thereby reach protection rear class power module circuitry.
In a preferred embodiment; isolation filter protected location 200 also comprises the residual voltage bleeder resistance R1 in parallel with Transient Suppression Diode D11 and electrochemical capacitor CE6; residual voltage bleeder resistance R1 is large resistance resistance; at least 1000 ohm; resistance is preferably 1000 ohm; electrochemical capacitor CE6 is in parallel with residual voltage bleeder resistance R1, and the positive pole of electrochemical capacitor CE6 is connected with the first output of common mode inductance L 1.
In a preferred embodiment; isolation filter protected location 200 also comprises electrochemical capacitor CE1 and the filtering output capacitance C6 in parallel with it; the positive pole of electrochemical capacitor CE1 is connected with buffer circuit 260 cathode output ends; the negative pole of electrochemical capacitor CE1 is connected with buffer circuit 260 cathode output ends and meets output ground GND_OUT, and output unit 300 is connected to the cathode output end of buffer circuit 260.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. one kind has the Power Management Design circuit of high-grade EMC and safety performance, comprise the input unit connecting successively, isolation filter protected location and output unit, it is characterized in that, described isolation filter protected location comprises the electromagnetic immunity protective circuit being connected between the output of described input unit and the input of output unit, electromagnetic interference filter circuit and the buffer circuit that described input unit and output unit are isolated, common mode interference signal and the differential mode interference signal clamper that described electromagnetic immunity protective circuit is exported described input unit also released, described electromagnetic interference filter circuit is carried out the input signal of described buffer circuit and output signal common mode filtering and the input signal of described buffer circuit is carried out to differential mode filtering.
2. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 1, it is characterized in that, electromagnetic immunity protective circuit comprises the common mode protective circuit for clamper the described common mode disturbance voltage of releasing, for the first differential mode protective circuit and the second differential mode protective circuit of clamper the described differential mode disturbance volt of releasing, described electromagnetic interference filter circuit comprises the differential mode filter circuit for the differential mode interference of buffer circuit input signal described in filtering, for the first input common mode filtering circuit of the common mode disturbances of the input signal of buffer circuit described in filtering and the second input common mode filtering circuit and for the output common mode filter circuit of the common mode disturbances of the output signal of buffer circuit described in filtering, described common mode protective circuit, the first differential mode protective circuit, differential mode filter circuit, the first input common mode filtering circuit, the second differential mode protective circuit, the second input common mode filtering circuit, buffer circuit and output common mode filter circuit are connected in turn between the output of described input unit and the input of output unit.
3. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 1, is characterized in that, in the wiring of pcb board, the wire distribution distance of described input unit and output unit is no less than 400 Mills.
4. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 3; it is characterized in that, the wire distribution distance in positive pole wiring, negative pole wiring and the described isolation filter protected location of described input unit between pin and the ground end of each components and parts is greater than 110 Mills.
5. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 1; it is characterized in that; described common mode protective circuit comprises piezo-resistance RV3 and piezo-resistance RV2; the first end of described piezo-resistance RV3, the first end of described piezo-resistance RV2 are connected with positive pole, the negative pole of described input unit respectively, the second end ground connection of the second end of described piezo-resistance RV3 and described piezo-resistance RV2
Described isolation filter protected location also comprises that first end is connected to the fuse F10 of described input unit positive pole, and described the first differential mode protective circuit comprises the piezo-resistance RV1 between the second end and the negative pole of described input unit that is connected to described fuse F10.
6. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 5; it is characterized in that, described isolation filter protected location also comprises diode D10, and described differential mode filter circuit comprises differential mode inductance L3, differential mode inductance L4 and capacitor C 3; wherein
The anode of described diode D10 is connected with described fuse F10 the second end, the negative electrode of described diode D10 is connected with described differential mode inductance L3 first end, described differential mode inductance L3 the second end is connected with the first end of described capacitor C 3, the second end of described capacitor C 3 is connected with the first end of described differential mode inductance L4, and the second end of described differential mode inductance L4 is connected with the negative pole of described input unit.
7. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 6, it is characterized in that, described the first input common mode filtering circuit comprises common mode inductance L1, and two inputs of described common mode inductance L1 are connected with first end, second end of described capacitor C 3 respectively;
Described the second differential mode protective circuit is Transient Suppression Diode D11, described Transient Suppression Diode D11 first end is connected with the first output of described common mode inductance L1, and the second end of described Transient Suppression Diode D11 is connected with inputting with the second output of described common mode inductance L1 simultaneously;
Described the second input common mode filtering circuit comprises capacitor C 1 and capacitor C 7, the first end of described capacitor C 1, the first end of described capacitor C 7 are connected with the first output, the second output of described common mode inductance L1 respectively, the second end ground connection of the second end of described capacitor C 1 and capacitor C 7.
8. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 7, it is characterized in that, described buffer circuit electrode input end, negative input are connected with the first output, the second output of described common mode inductance L1 respectively, described output common mode filter circuit comprises capacitor C 2 and capacitor C 8, the first end of described capacitor C 2 is connected with described buffer circuit cathode output end, the first end of described capacitor C 8 is connected with the cathode output end of described buffer circuit, the second end ground connection of the second end of described capacitor C 2 and capacitor C 8.
9. the Power Management Design circuit with high-grade EMC and safety performance as claimed in claim 5; it is characterized in that; described isolation filter protected location also comprises the residual voltage bleeder resistance R1 in parallel with described Transient Suppression Diode D11 and electrochemical capacitor CE6; described electrochemical capacitor CE6 is in parallel with described residual voltage bleeder resistance R1, and the positive pole of described electrochemical capacitor CE6 is connected with the first output of described common mode inductance L1.
10. the Power Management Design circuit with high-grade EMC and safety performance as described in claim 3 to 9 any one; it is characterized in that; described isolation filter protected location also comprises electrochemical capacitor CE1 and the filtering output capacitance C6 in parallel with it; the positive pole of described electrochemical capacitor CE1 is connected with described buffer circuit cathode output end; the negative pole of described electrochemical capacitor CE1 is connected with described buffer circuit cathode output end and connects output ground, and described output unit is connected to the cathode output end of buffer circuit.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201238083Y (en) * | 2008-08-06 | 2009-05-13 | 四川九洲电器集团有限责任公司 | Power cord with power supply noise filter |
| CN101794999A (en) * | 2009-12-31 | 2010-08-04 | 西安开容电子技术有限责任公司 | Transient state and stable state resisting combination interference power filter and design method thereof |
| CN101860237A (en) * | 2010-06-01 | 2010-10-13 | 海洋王照明科技股份有限公司 | High-power factor constant-current circuit and power source |
| CN201986215U (en) * | 2010-12-18 | 2011-09-21 | 新视野光电（郑州）有限公司 | High-power light emitting diode (LED) isolation type driving power supply |
| CN102215615A (en) * | 2010-04-02 | 2011-10-12 | 上海古森实业有限公司 | Driving circuit for LED (light emitting diode) lamp |
| CN202135387U (en) * | 2011-06-23 | 2012-02-01 | 常州绿脉电器有限公司 | Novel environment-friendly and efficient electronic ballast |
-
2012
- 2012-12-19 CN CN201210554633.8A patent/CN103887965B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201238083Y (en) * | 2008-08-06 | 2009-05-13 | 四川九洲电器集团有限责任公司 | Power cord with power supply noise filter |
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