CN104218558A - Surge-prevention high-voltage protection circuit - Google Patents
Surge-prevention high-voltage protection circuit Download PDFInfo
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- CN104218558A CN104218558A CN201310212974.1A CN201310212974A CN104218558A CN 104218558 A CN104218558 A CN 104218558A CN 201310212974 A CN201310212974 A CN 201310212974A CN 104218558 A CN104218558 A CN 104218558A
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 44
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000005669 field effect Effects 0.000 claims description 18
- 239000003381 stabilizer Substances 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract 4
- 238000011105 stabilization Methods 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
A surge-prevention high-voltage protection circuit is used for absorbing surge voltage and high voltage and comprises a voltage absorption module, a voltage detection module and a voltage switch module, wherein the voltage absorption module is used for absorbing the surge voltage; the voltage detection module is used for detecting the high voltage; the voltage switch module is used for making the voltage absorption module shorted when an input voltage is normal; a voltage stabilization module receives the high voltage and is conducted at a stable voltage; a first switch module is also conducted when the voltage stabilization module is conducted and outputs a cut-off switch signal to the voltage switch module, the voltage switch module cuts off, and the voltage absorption module is electrically connected with the input voltage and a load and absorbs the high voltage; and the voltage stabilization module cuts off when receiving a low high, the first switch module also cuts off when the voltage stabilization module cuts off and outputs a conduction switch signal to the voltage switch module, the voltage switch module is electrically connected with the input voltage and the load, and the voltage absorption module is shorted. Therefore, the voltage absorption module can absorb the high voltage, and the effect of instantaneous high voltage during preventing the surface voltage and working can be achieved.
Description
Technical field
The present invention relates to voltage protection circuit, particularly relate to a kind of can the Anti-surging high tension protection circuit of instantaneous high pressure in anti-surge voltage and the course of work.
Background technology
Circuit, when input voltage is unstable, easily produces instantaneous pressure, and the voltage carrying capacity of components and parts in circuit is limited, and too high instantaneous high pressure can cause damage to the components and parts in circuit and load.
This instantaneous overvoltage comprises surge voltage when starting or disconnect and the input high pressure in circuit working process.Particularly, circuit usually can be produced very high switching overvoltage when being struck by lightning and at on-off inductive load or bulk loads, and this instantaneous overvoltage is called surge voltage, is a kind of transition interference.This instantaneous pressure easily damages other control elements in load and circuit.And when input voltage is too high in the course of the work, namely when exceeding the nominal maximum operating voltage of load and circuit element, also can cause damage to load and circuit element, serious meeting causes the danger such as fire.
Summary of the invention
Based on this, be necessary to provide a kind of can the Anti-surging high tension protection circuit of instantaneous high pressure in anti-surge voltage and the course of work.
A kind of Anti-surging high tension protection circuit, for absorbing surge voltage and high voltage, comprise the voltage absorption module for absorbing surge voltage, for detecting high-tension voltage detection module and the voltage switch module for the voltage absorption module described in short circuit when input voltage is normal;
Described voltage detection module comprises Voltage stabilizing module and the first switch module, the input termination input voltage of described Voltage stabilizing module, and the output of described Voltage stabilizing module is electrically connected with the control end of described first switch module, the earth terminal ground connection of described Voltage stabilizing module; The control end of described voltage switch module is electrically connected with the output of described first switch module, the earth terminal ground connection of described first switch module; The earth terminal ground connection of described voltage switch module, the power supply termination input voltage of described voltage switch module, the output of described voltage switch module is used for being electrically connected with load, the output of described voltage absorption module is used for being electrically connected with load, the input termination input voltage of described voltage absorption module;
Described voltage absorption module is for absorbing surge voltage when described Anti-surging high tension protection circuit starts;
Described Voltage stabilizing module receives high voltage voltage stabilizing conducting, the also conducting when described Voltage stabilizing module conducting of described first switch module, described first switch module exports cutoff switch signal to described voltage switch module, described voltage switch module cut-off, described voltage absorption module electrical connection input voltage and load, described voltage absorption module absorbs high voltage;
Described Voltage stabilizing module ends when receiving low-voltage, described first switch module also ends when described Voltage stabilizing module cut-off, described first switch module exports actuating switch signal to described voltage switch module, described voltage switch module electrical connection input voltage and load, described voltage absorption module is shorted.
Wherein in an embodiment, described voltage absorption module comprises thermistor RT, described thermistor RT mono-termination input voltage, another terminating load.
Wherein in an embodiment, described Voltage stabilizing module comprises voltage-stabiliser tube ZD1, divider resistance R1 and divider resistance R2, the positive pole of described voltage-stabiliser tube ZD1 connects input voltage, the negative electricity of described voltage-stabiliser tube ZD1 connects described divider resistance R1, the other end ground connection of described divider resistance R1, one end of described divider resistance R2 is electrically connected the points of common connection of described voltage-stabiliser tube ZD1 and described divider resistance R1, and the other end of described divider resistance R2 is electrically connected with the control end of described first switch module.
Wherein in an embodiment, described first switch module comprises triode Q1, the base stage of described triode Q1 is electrically connected with the output of described Voltage stabilizing module, the grounded emitter of described triode Q1, and the collector electrode of described triode Q1 is electrically connected with the control end of described voltage switch module.
Wherein in an embodiment, described voltage switch module comprise for output switching signal switch control module, for keep described switch control module control end voltage be high level voltage keep module, the charging module making the control end level of described switch control module raise for charging and the second switch module for the conducting when input voltage is normal;
The input termination input voltage of described charging module, the output of described charging module is electrically connected with the control end of described switch control module, the earth terminal ground connection of described charging module, described voltage keeps the output of module to be electrically connected with the output of described charging module, described voltage keeps the earth terminal ground connection of module, the power supply termination input voltage of described switch control module, the output of described switch control module is electrically connected with the control end of described second switch module, the earth terminal ground connection of described switch control module, the output of described second switch module is used for being connected with load, the input termination input voltage of described second switch module.
Wherein in an embodiment, described charging module comprises divider resistance R3 and electrochemical capacitor C1, the one termination input voltage of described divider resistance R3, the other end is electrically connected with the positive pole of described electrochemical capacitor C1, the other end ground connection of described electrochemical capacitor C1, the points of common connection of described divider resistance R3 and described electrochemical capacitor C1 keeps the control end of the output of module and described switch control module to be electrically connected with described voltage respectively.
Wherein in an embodiment, described voltage keeps module to comprise diode D1 and diode D2, between the output that described diode D1 and described diode D2 is series at described charging module and earth terminal, the minus earth after wherein said diode D1 and described diode D2 connects.
Wherein in an embodiment, described switch control module comprises triode Q2 and divider resistance R4, the one termination input voltage of described divider resistance R4, the other end is electrically connected with the collector electrode of described triode Q2, the grounded emitter of described triode Q2, the base stage of described triode Q2 is electrically connected with the output of described charging module, and the points of common connection of described triode Q2 and described divider resistance R4 is electrically connected with the control end of described second switch module.
Wherein in an embodiment, described second switch module comprises field effect transistor Q3, the grid of described field effect transistor Q3 is electrically connected with the output of described switch control module, and the drain electrode of described field effect transistor Q3 connects input voltage, and the source electrode of described field effect transistor Q3 is used for being connected with load.
Surge voltage when above-mentioned Anti-surging high tension protection circuit is started by voltage absorption module absorbing circuit; and when inputting high pressure; conducting during Voltage stabilizing module input high pressure, the first switch module also conducting be thus connected with Voltage stabilizing module, and export cutoff switch signal to voltage switch module.Therefore, voltage switch module is ended, voltage absorption module electrical connection input voltage and load, thus voltage absorption module absorbs high voltage.When inputting normal voltage, the conducting of voltage switch module, voltage absorption module is shorted, and thus can not absorb voltage, load normally works, thus can realize the effect of the instantaneous pressure in anti-surge voltage and the course of work.
Accompanying drawing explanation
Fig. 1 is the module map of Anti-surging high tension protection circuit;
Fig. 2 is the schematic diagram of Anti-surging high tension protection circuit.
Embodiment
As shown in Figure 1, be a kind of module map of Anti-surging high tension protection circuit.
A kind of Anti-surging high tension protection circuit; for absorbing surge voltage and high voltage, comprise for absorbing surge voltage and high-tension voltage absorption module 110, for detecting high-tension voltage detection module 120 and the voltage switch module 130 for the voltage absorption module 110 described in short circuit when input voltage is normal.
Voltage detection module 120 comprises Voltage stabilizing module 122 and the first switch module 124, the input termination input voltage of described Voltage stabilizing module 122, the output of described Voltage stabilizing module 122 is electrically connected with the control end of described first switch module 124, the earth terminal ground connection of described Voltage stabilizing module 122; The control end of described voltage switch module 130 is electrically connected with the output of described first switch module 124, the earth terminal ground connection of described first switch module 124; The earth terminal ground connection of described voltage switch module 130, the power supply termination input voltage of described voltage switch module 130, the output of described voltage switch module 130 is used for being electrically connected with load, the output of described voltage absorption module 110 is used for being electrically connected with load, the input termination input voltage of described voltage absorption module 110.
Voltage absorption module 110 is for absorbing surge voltage when described Anti-surging high tension protection circuit starts.
Described Voltage stabilizing module 122 receives high voltage voltage stabilizing conducting, the also conducting when described Voltage stabilizing module 122 conducting of described first switch module 124, described first switch module 124 exports cutoff switch signal to described voltage switch module 130, described voltage switch module 130 is ended, voltage absorption module 110 is electrically connected input voltage with negative, and described voltage absorption module 110 absorbs high voltage.
Described Voltage stabilizing module 122 ends when receiving low-voltage, described first switch module 124 also ends when described Voltage stabilizing module 122 ends, described first switch module 124 exports actuating switch signal to described voltage switch module 130, described voltage switch module 130 is electrically connected input voltage and load, and described voltage absorption module 110 is shorted.
Voltage absorption module 110 is for absorbing surge voltage and high voltage.When there is surge voltage and high voltage in circuit, need surge voltage or high voltage consumption, avoid surge voltage or high voltage to cause damage to the components and parts in circuit.Therefore, voltage absorption module 110 is exactly for by surge voltage and high voltage consumption, particularly, is that surge voltage and electric energy corresponding to high voltage are converted to form of thermal energy.
Voltage stabilizing module 122 is for detecting input voltage whether within the nominal maximum operating voltage scope of load.If so, then Voltage stabilizing module 122 not conducting, therefore the first switch module 124 exports the switching signal of conducting to voltage switch module 130, voltage switch module 130 conducting, voltage absorption module 110 is shorted, and therefore, input voltage is powered to the load by voltage switch module 130.
If not, then Voltage stabilizing module 122 conducting, therefore the first switch module 124 exports the switching signal of cut-off to voltage switch module 130.After voltage switch module 130 is ended, input voltage is connected with load by voltage absorption module 110.Therefore, input voltage absorbs by voltage absorption module 110, and follow-up load can not high input voltage.
First switch module 124 is for according to the conducting of the conducting of Voltage stabilizing module 122 and cut-off control voltage switch module 130 and cut-off.Particularly, when Voltage stabilizing module 122 conducting, the first switch module 124 exports cutoff switch signal to voltage switch module 130; When Voltage stabilizing module 122 ends, the first switch module 124 exports actuating switch signal to voltage switch module 130.
Whether voltage switch module 130 accesses the loop between input voltage and load for control voltage absorption module 110.During 130 conducting of voltage switch module, voltage absorption module 110 is shorted, and input voltage is connected with load by voltage switch module 130.When voltage switch module 130 is ended, voltage absorption module 110 connects input voltage and load.Therefore, in input voltage overvoltage or when there is surge voltage, voltage absorption module 110 can absorb high voltage.
Incorporated by reference to Fig. 2.
Voltage absorption module 110 comprises thermistor RT, described thermistor RT mono-termination input voltage, another terminating load.
Voltage stabilizing module 122 comprises voltage-stabiliser tube ZD1, divider resistance R1 and divider resistance R2, the positive pole of described voltage-stabiliser tube ZD1 connects input voltage, the negative electricity of described voltage-stabiliser tube ZD1 connects described divider resistance R1, the other end ground connection of described divider resistance R1, one end of described divider resistance R2 is electrically connected the points of common connection of described voltage-stabiliser tube ZD1 and described divider resistance R1, and the other end of described divider resistance R2 is electrically connected with the control end of described first switch module 124.
First switch module 124 comprises triode Q1, the base stage of described triode Q1 is electrically connected with the output of described Voltage stabilizing module 122, the grounded emitter of described triode Q1, the collector electrode of described triode Q1 is electrically connected with the control end of described voltage switch module 130.
Triode Q1 is NPN type triode.
Voltage switch module 130 comprise for output switching signal switch control module 136, for keep described switch control module 136 control end voltage be high level voltage keep module 134, the charging module 132 control end level of described switch control module 136 being raised for charging and the second switch module 138 be connected with load for control inputs voltage.
The input termination input voltage of described charging module 132, the output of described charging module 132 is electrically connected with the control end of described switch control module 136, the earth terminal ground connection of described charging module 132, described voltage keeps the output of module 134 to be electrically connected with the output of described charging module 132, described voltage keeps the earth terminal ground connection of module 134, the power supply termination input voltage of described switch control module 136, the output of described switch control module 136 is electrically connected with the control end of described second switch module 138, the earth terminal ground connection of described switch control module 136, the output of described second switch module 138 is used for being connected with load, the input termination input voltage of described second switch module 138.
Charging module 132 comprises divider resistance R3 and electrochemical capacitor C1, the one termination input voltage of described divider resistance R3, the other end is electrically connected with the positive pole of described electrochemical capacitor C1, the other end ground connection of described electrochemical capacitor C1, the points of common connection of described divider resistance R3 and described electrochemical capacitor C1 keeps the control end of the output of module 134 and described switch control module 136 to be electrically connected with described voltage respectively.
Voltage keeps module 134 to comprise diode D1 and diode D2, between the output that described diode D1 and described diode D2 is series at described charging module 132 and earth terminal, and the minus earth after wherein said diode D1 and described diode D2 connects.
Switch control module 136 comprises triode Q2 and divider resistance R4, the one termination input voltage of described divider resistance R4, the other end is electrically connected with the collector electrode of described triode Q2, the grounded emitter of described triode Q2, the base stage of described triode Q2 is electrically connected with the output of described charging module 132, and the points of common connection of described triode Q2 and described divider resistance R4 is electrically connected with the control end of described second switch module 138.
Triode Q2 is NPN type triode.
Second switch module 138 comprises field effect transistor Q3, and the grid of described field effect transistor Q3 is electrically connected with the output of described switch control module 136, and the drain electrode of described field effect transistor Q3 connects input voltage, and the source electrode of described field effect transistor Q3 is used for being connected with load.
Field effect transistor Q3 is P channel MOS tube.
Based on above-mentioned all embodiments, the operation principle of Anti-surging high tension protection circuit is as follows:
The moment that input voltage starts generally can produce surge voltage; and at this moment; Voltage stabilizing module 122, first switch module 124 and voltage switch module 130 also do not work, and the thermistor RT thus in voltage absorption module 110 can absorb surge voltage, thus the load of protection rear class and electric elements.
Receive input voltage moment at circuit, voltage-stabiliser tube ZD1 ends because not reaching conducting voltage.Divider resistance R2 two ends no-voltage, therefore, the base level of triode Q1 is low level, and triode Q1 ends.And electrochemical capacitor C1 is charged by divider resistance R3, when the magnitude of voltage of electrochemical capacitor C1 does not raise, the just very low level of electrochemical capacitor C1, therefore, the base stage of triode Q2 is also low level, and triode Q2 ends.Positive pole also low level after diode D1 and diode D2 connects, diode D1 and diode D2 ends.Because triode Q2 ends, the grid voltage of the field effect transistor Q3 be therefore connected with triode Q2 collector electrode is high level, and field effect transistor Q3 ends.Thermistor RT is electrically connected input voltage and load, surge voltage when therefore thermistor RT can absorb startup.
When input voltage belongs to the normal working voltage of load, when electrochemical capacitor C1 enough makes triode Q2 conducting by the voltage that divider resistance R3 charges to two ends, the base stage of triode Q2 is high level and conducting.And the just very high level after diode D1 and diode D2 series connection, diode D1 and diode D2 conducting, thus form loop of voltage regulation with electrochemical capacitor C1, the voltage keeping electrochemical capacitor C1 two ends is high level always.After triode Q2 conducting, the collector electrode level of triode Q2 is dragged down, therefore, the gate pole level of the field effect transistor Q3 be connected with triode Q2 collector electrode is also low level, field effect transistor Q3 conducting, thus short circuit thermistor RT, make thermistor RT stop absorbing voltage, input voltage passes through field effect transistor Q3 to rear class circuit supply.
And when input voltage exceeds the normal working voltage of load, voltage-stabiliser tube ZD1 reaches conducting voltage and conducting.The high voltage at divider resistance R1 two ends is supplied to the base stage of triode Q1 by divider resistance R2.The conducting when base stage of triode Q1 receives bias voltage, therefore the collector voltage of triode Q1 is low level.And the base stage of triode Q2 is connected with the collector electrode of triode Q1.Therefore, the base level of triode Q2 is dragged down as low level, and triode Q2 ends, and makes the grid of triode Q3 become high level, and triode Q3 ends.Therefore, thermistor RT starts working, and absorbs the high voltage of input.Thus protection late-class circuit does not affect by high-tension.
Surge voltage when above-mentioned Anti-surging high tension protection circuit is started by voltage absorption module 110 absorbing circuit; and when inputting high pressure; conducting when Voltage stabilizing module 122 inputs high pressure; thus the first switch module 124 also conducting be connected with Voltage stabilizing module 122; and export cutoff switch signal to voltage switch module 130, therefore, voltage switch module 130 is ended; voltage absorption module 110 is electrically connected input voltage and load, thus voltage absorption module 110 absorbs high voltage.When inputting normal voltage, voltage switch module 130 conducting, voltage absorption module 110 is shorted, and thus can not absorb voltage, load normally works, thus can realize the effect of anti-surge voltage and high pressure.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (9)
1. an Anti-surging high tension protection circuit, for absorbing surge voltage and high voltage, it is characterized in that, comprising the voltage absorption module for absorbing surge voltage, for detecting high-tension voltage detection module and the voltage switch module for the voltage absorption module described in short circuit when input voltage is normal;
Described voltage detection module comprises Voltage stabilizing module and the first switch module, the input termination input voltage of described Voltage stabilizing module, and the output of described Voltage stabilizing module is electrically connected with the control end of described first switch module, the earth terminal ground connection of described Voltage stabilizing module; The control end of described voltage switch module is electrically connected with the output of described first switch module, the earth terminal ground connection of described first switch module; The earth terminal ground connection of described voltage switch module, the power supply termination input voltage of described voltage switch module, the output of described voltage switch module is used for being electrically connected with load, the output of described voltage absorption module is used for being electrically connected with load, the input termination input voltage of described voltage absorption module;
Described voltage absorption module is for absorbing surge voltage when described Anti-surging high tension protection circuit starts;
Described Voltage stabilizing module receives high voltage voltage stabilizing conducting, the also conducting when described Voltage stabilizing module conducting of described first switch module, described first switch module exports cutoff switch signal to described voltage switch module, described voltage switch module cut-off, described voltage absorption module electrical connection input voltage and load, described voltage absorption module absorbs high voltage;
Described Voltage stabilizing module ends when receiving low-voltage, described first switch module also ends when described Voltage stabilizing module cut-off, described first switch module exports actuating switch signal to described voltage switch module, described voltage switch module electrical connection input voltage and load, described voltage absorption module is shorted.
2. Anti-surging high tension protection circuit according to claim 1, is characterized in that, described voltage absorption module comprises thermistor RT, described thermistor RT mono-termination input voltage, another terminating load.
3. Anti-surging high tension protection circuit according to claim 1; it is characterized in that; described Voltage stabilizing module comprises voltage-stabiliser tube ZD1, divider resistance R1 and divider resistance R2; the positive pole of described voltage-stabiliser tube ZD1 connects input voltage; the negative electricity of described voltage-stabiliser tube ZD1 connects described divider resistance R1; the other end ground connection of described divider resistance R1; one end of described divider resistance R2 is electrically connected the points of common connection of described voltage-stabiliser tube ZD1 and described divider resistance R1, and the other end of described divider resistance R2 is electrically connected with the control end of described first switch module.
4. Anti-surging high tension protection circuit according to claim 1; it is characterized in that; described first switch module comprises triode Q1; the base stage of described triode Q1 is electrically connected with the output of described Voltage stabilizing module; the grounded emitter of described triode Q1, the collector electrode of described triode Q1 is electrically connected with the control end of described voltage switch module.
5. Anti-surging high tension protection circuit according to claim 1, it is characterized in that, described voltage switch module comprise for output switching signal switch control module, for keep described switch control module control end voltage be high level voltage keep module, the charging module making the control end level of described switch control module raise for charging and the second switch module for the conducting when input voltage is normal;
The input termination input voltage of described charging module, the output of described charging module is electrically connected with the control end of described switch control module, the earth terminal ground connection of described charging module, described voltage keeps the output of module to be electrically connected with the output of described charging module, described voltage keeps the earth terminal ground connection of module, the power supply termination input voltage of described switch control module, the output of described switch control module is electrically connected with the control end of described second switch module, the earth terminal ground connection of described switch control module, the output of described second switch module is used for being connected with load, the input termination input voltage of described second switch module.
6. Anti-surging high tension protection circuit according to claim 5; it is characterized in that; described charging module comprises divider resistance R3 and electrochemical capacitor C1; the one termination input voltage of described divider resistance R3; the other end is electrically connected with the positive pole of described electrochemical capacitor C1; the other end ground connection of described electrochemical capacitor C1, the points of common connection of described divider resistance R3 and described electrochemical capacitor C1 keeps the control end of the output of module and described switch control module to be electrically connected with described voltage respectively.
7. Anti-surging high tension protection circuit according to claim 5; it is characterized in that; described voltage keeps module to comprise diode D1 and diode D2; between the output that described diode D1 and described diode D2 is series at described charging module and earth terminal, the minus earth after wherein said diode D1 and described diode D2 connects.
8. Anti-surging high tension protection circuit according to claim 5; it is characterized in that; described switch control module comprises triode Q2 and divider resistance R4; the one termination input voltage of described divider resistance R4; the other end is electrically connected with the collector electrode of described triode Q2; the grounded emitter of described triode Q2; the base stage of described triode Q2 is electrically connected with the output of described charging module, and the points of common connection of described triode Q2 and described divider resistance R4 is electrically connected with the control end of described second switch module.
9. Anti-surging high tension protection circuit according to claim 5; it is characterized in that; described second switch module comprises field effect transistor Q3; the grid of described field effect transistor Q3 is electrically connected with the output of described switch control module; the drain electrode of described field effect transistor Q3 connects input voltage, and the source electrode of described field effect transistor Q3 is used for being connected with load.
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| CN104242249A (en) * | 2014-09-17 | 2014-12-24 | 广州金升阳科技有限公司 | Protective circuit of switching power supply |
| CN106774589A (en) * | 2016-12-29 | 2017-05-31 | 武汉盛帆电子股份有限公司 | Stable-pressure device and guard method, communication bus supply unit |
| CN107197184A (en) * | 2017-07-05 | 2017-09-22 | 青岛海信电器股份有限公司 | A kind of supplying power for tuner control circuit, system and top box of digital machine |
| CN108155637A (en) * | 2018-02-23 | 2018-06-12 | 广东天文防雷工程有限公司 | Three power supply electric surges protect circuit |
| CN108366466A (en) * | 2018-04-24 | 2018-08-03 | 盘锦润富堂科技发展有限公司 | A kind of novel lathe energy-saving lighting lamp |
| WO2023115832A1 (en) * | 2021-12-22 | 2023-06-29 | 苏州浪潮智能科技有限公司 | Apparatus for suppressing peak pulse at input end of hot plug line |
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| CN106774589A (en) * | 2016-12-29 | 2017-05-31 | 武汉盛帆电子股份有限公司 | Stable-pressure device and guard method, communication bus supply unit |
| CN107197184A (en) * | 2017-07-05 | 2017-09-22 | 青岛海信电器股份有限公司 | A kind of supplying power for tuner control circuit, system and top box of digital machine |
| CN108155637A (en) * | 2018-02-23 | 2018-06-12 | 广东天文防雷工程有限公司 | Three power supply electric surges protect circuit |
| CN108366466A (en) * | 2018-04-24 | 2018-08-03 | 盘锦润富堂科技发展有限公司 | A kind of novel lathe energy-saving lighting lamp |
| WO2023115832A1 (en) * | 2021-12-22 | 2023-06-29 | 苏州浪潮智能科技有限公司 | Apparatus for suppressing peak pulse at input end of hot plug line |
| US11979020B1 (en) | 2021-12-22 | 2024-05-07 | Suzhou Metabrain Intelligent Technology Co., Ltd. | Apparatus for suppressing peak pulse at input end of hot plug line |
| CN117834336A (en) * | 2023-12-29 | 2024-04-05 | 浙江康信电器集团有限公司 | Voltage stabilizing circuit applied to LIN communication of commercial vehicle and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN104218558B (en) | 2017-12-15 |
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