CN204992540U - Steady voltage source can be monitored in integration of input quick -break type - Google Patents
Steady voltage source can be monitored in integration of input quick -break type Download PDFInfo
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- CN204992540U CN204992540U CN201520599021.XU CN201520599021U CN204992540U CN 204992540 U CN204992540 U CN 204992540U CN 201520599021 U CN201520599021 U CN 201520599021U CN 204992540 U CN204992540 U CN 204992540U
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Abstract
Steady voltage source can be monitored in integration of input quick -break type belongs to electron technical field, by rectifier transformer, bridge rectifier, excessive pressure starting circuit, excessive pressure quick -break protection circuit, P type the observation circuit overflows, three -terminal integrated voltage stabilizing circuit constitutes jointly. When having the excessive pressure, input at three -terminal integrated voltage stabilizing circuit forms quick -break protection, set and produce the trouble fully when power itself or institute, when making the electric current change, formation overflows the monitoring, the initiative suggestion, it in time learns timely processing to be convenient for people, subtract the spoilage of power and equipment, sometimes, trail the ability that the monitoring shows, the serial advantage that has kept three -terminal integrated voltage stabilizing circuit, increased on this basis and prevented excessive pressure and the function that overflows the monitoring, special requirement with the adaptation electronic product, make it extremely extensive application.
Description
Technical field
Belong to electronic technology field.
Background technology
The quality of power supply, directly has influence on the overall performance of electrical equipment.Power source performance is good, then overall performance is good.Power supply is also usually flimsy Focusing on components, and be no matter the fault of power supply itself or equipment creates fault, directly can show in the electric current of power supply, if can be the common intuitionistic forms of people by the formal transformation of this electric current performance fault, as prompting etc. of sounding when there being event, to remind people's power supply or equipment to occur problem, make people's energy on-call maintenance, obviously being highly significant, is also main research purpose of the present invention.
Damage the diversification of forms of power supply or equipment, overvoltage, overcurrent are common damage power supply or the form of equipment, therefore, reduce this spoilage, are very important.When there being thunderbolt; unexpected gush pressure and usually can go up hectovolt; this all can not bear for a lot of stabilized voltage power supply; therefore; although power type of today is many again; but power supply itself or arrange standby breaking down time can not have prompting, can not starting protection rapidly when there being the overvoltage of thunderbolt or other reason, therefore stabilized voltage power supply is now still far from perfect.
Three-terminal voltage-stabilizing power supply uses stabilized voltage power supply very widely, and its external piece is few, easy to use, and cost is low, and voltage stabilizing is reliable, but it has a lot of shortcoming.
1, its input voltage is low, and says above, when being struck by lightning, unexpected gush pressure and usually can go up hectovolt, or even volt more than 200, but the input voltage of three end integrated stable voltage circuits is the highest only has 36V, once overvoltage will damage, so its anti-overvoltage capabilities extreme difference.
2, no matter be three ends or other stabilized voltage power supply, do not possess monitoring display capabilities during overcurrent, can not show intuitively, so people can not be allowed to learn timely process in time, thus the spoilage of overcurrent is one of key producing fault.
Be no matter in fact three-terminal voltage-stabilizing power supply itself or arrange standby when producing fault, power supply all can show, because its electric current can change, just this change is not common display directly perceived, if when there is such situation, power supply can show intuitively, as the reversing of automobile with auditory tone cues out, allow people just listen and just know there is fault, thisly to show intuitively, as monitor, people can be learnt in time, on-call maintenance, be obviously necessary, it greatly reduces the spoilage of power supply and equipment.Can monitor at any time at ordinary times, at power supply itself or equipment goes wrong time, no matter initiatively can point out, be convenient to people and learn in time, on-call maintenance, be for security personnel's series products or other products is all very crucial.
Solve the above problems, reach and no longer need power-off to carry out protective device at thundery sky, when there being overpressure situation, also no longer worry can damage the object of power supply, and when power supply or equipment itself break down, can initiatively point out, be convenient to people learn in time, timely maintenance, systematic research must be carried out, need the support of multiple technologies, need the mode of thinking of innovation, because it should consider energy voltage stabilizing, again when there being overcurrent-overvoltage, can point out in time, so, it must break through the mode of traditional voltage stabilizing circuit, find new direction, could realize.
Summary of the invention
Main purpose of the present invention is; a kind of new circuit is proposed; coordinate three end integrated stable voltage circuits; be combined into a kind of new stabilized voltage power supply; when there being overvoltage; fast tripping protection is formed at the input of three end integrated stable voltage circuits; when power supply itself or arrange and standby produce fault, when electric current is changed, form overcurrent monitoring; initiatively prompting; be convenient to people and learn timely process in time, subtract the spoilage of power supply and equipment, have the ability of tracking and monitoring display constantly; to adapt to the special requirement of electronic product, make it a very wide range of utilization.
The measure that the present invention adopts:
1, the integrated source of stable pressure of monitoring of input quick-break type is made up of jointly rectifier transformer, bridge rectifier, overvoltage start-up circuit, overvoltage fast tripping protection circuit, P type overcurrent monitoring circuit, three end integrated stable voltage circuits.
Wherein: the secondary termination connecting bridge formula rectification of rectifier transformer.
Overvoltage start-up circuit is started triode formed by door voltage-stabiliser tube, overvoltage starting resistance, overvoltage.
Overvoltage fast tripping protection circuit is made up of trigger resistance and quick-break controllable silicon.
P type overcurrent monitoring circuit protects triode by PNP, and pressure drop diode, isolating diode, sample resistance, sounding sheet form.
The output of one termination bridge rectifier of door voltage-stabiliser tube, the other end takes over one end of pressure starting resistance, and the other end of overvoltage starting resistance takes over the base stage that pressure starts triode, and overvoltage starts the grounded emitter line of triode.
Trigger resistance is connected on rectification output and quick-break silicon controlled controls between pole, and quick-break silicon controlled anode is connected on the negative pole of pressure drop diode, and quick-break silicon controlled controls pole and takes over the collector electrode that pressure starts triode.
PNP protects the emitter of triode to connect the output of bridge rectifier; between the emitter that sample resistance is connected on PNP protection triode and base stage; pressure drop diode cathode connects the base stage that PNP protects triode; negative pole connects quick-break silicon controlled anode; the positive pole of isolating diode connects the collector electrode that PNP protects triode; negative pole connects quick-break silicon controlled anode, between the collector electrode that sounding sheet is connected on PNP protection triode and ground wire.
Quick-break silicon controlled negative electrode connects the input of three end integrated stable voltage circuits, the earth terminal earth connection of three end integrated stable voltage circuits, and namely the output of three end integrated stable voltage circuits is the integrated output of monitoring source of stable pressure of input quick-break type.
2, quick-break controllable silicon is one-way SCR.
3, overvoltage starts triode is the NPN triode of back-pressure value on 200V.
4, bridge rectifier is that two rectifier diodes are connected into a branch road, its middle series connection point connects a secondary termination of rectifier transformer, another two rectification triodes series connection is another branch road, middle series connection point connects another secondary termination of rectifier transformer, the plus earth line of two branch roads, the negative pole of two branch roads is connected together becomes bridge rectifier output.
5, sounding sheet is the piezoelectric ceramic piece of band sound communication device.
Above measure is explained as follows:
The integrated feature one of monitoring source of stable pressure of input quick-break type is the number of advantages maintaining three end integrated stable voltage circuits.Two is when there being overvoltage, forms fast tripping protection at the input of three end integrated stable voltage circuits.Three is standby produce fault when power supply itself or institute arrange, and when electric current is changed, formation overcurrent monitoring, active is pointed out, and is convenient to people and learns timely process in time, subtract the spoilage of power supply and equipment.Four is the abilities having tracking and monitoring display constantly, to adapt to the special requirement of electronic product, has made it a very wide range of utilization.For reaching the above object, thus have employed through under measure.
One, the integrated source of stable pressure of monitoring of input quick-break type is the stabilized voltage power supply integrating overvoltage fast tripping protection, overcurrent monitoring, three-terminal voltage-stabilizing circuit, is jointly made up of rectifier transformer, bridge rectifier, overvoltage start-up circuit, overvoltage fast tripping protection circuit, P type overcurrent monitoring circuit, three end integrated stable voltage circuits.Overvoltage start-up circuit is started triode formed by door voltage-stabiliser tube, overvoltage starting resistance, overvoltage; overvoltage fast tripping protection circuit is made up of trigger resistance and quick-break controllable silicon; when rectification output end has by thunderbolt overvoltage; start overvoltage fast tripping protection, protection three-terminal voltage-stabilizing circuit can not damage because of overvoltage.P type overcurrent monitoring circuit protects triode by PNP, and pressure drop diode, isolating diode, sample resistance, sounding sheet form.When equipment or three-terminal voltage-stabilizing circuit itself break down and make electric current increase, overcurrent monitoring starts immediately, reminding user of sounding, so that safeguard.Three-terminal voltage-stabilizing level is three terminal integrated voltage stabilizer; mainly provide stable voltage to load; technical staff knows, three end integrated stable voltage circuits are kind outstanding circuit, but due to input voltage low; be up to 36V; so once input voltage is high will cause damage, thus add fast tripping protection level, when there being overpressure situation to occur at input; start immediately, protection three terminal regulator can not damage.
Two, overvoltage fast tripping protection is formed by overvoltage start-up circuit and overvoltage fast tripping protection circuit, its function has two, one is under normal circumstances, for three end integrated stable voltage circuits provide input voltage, two be have thunderbolt gush pressure or other accident cause rectification output overvoltage time, start fast tripping protection, protect three end integrated stable voltage circuits can not damage because of overvoltage, and had the fast tripping protection of overvoltage just, this power supply is made to ensure that the series of advantages of three end integrated stable voltage circuits, make three end integrated stable voltage circuits can not damage because of thunderbolt especially, and this overvoltage quick-break formula protection can also be used in other stabilized voltage power supply, increase the defencive function of power supply.
1, the input that overvoltage fast tripping protection is three end integrated stable voltage circuits provides the reason of voltage.
Normal condition when being energized, controllable silicon is triggered resistance triggering and conducting, and this triggering is triggered for a long time, instead of transient state triggers, so the dynamics of triggering is very large, can ensures the reliable conducting of silicon controlled, and be in conducting state for a long time.Thus can, by the input of power delivery to three end integrated stable voltage circuits, three end integrated stable voltage circuits normally be exported, ensure outwards to export.
2, the principle analysis of overvoltage fast tripping protection.
Overvoltage fast tripping protection is formed jointly by overvoltage start-up circuit and overvoltage fast tripping protection circuit, pressure is gushed when having by thunderbolt, or other accident causes rectification output overvoltage, exceed the voltage stabilizing value of door voltage-stabiliser tube, now door voltage-stabiliser tube conducting, the resistance value be triggered due to quick-break controllable silicon is very large, all can trigger when hundreds of K, as long as so debugged the resistance of overvoltage starting resistance, overvoltage just can be caused to start triode saturated or to saturated change, due to silicon controlled positive feedback, so quick-break controllable silicon can towards the change of cut-off direction, (it should be noted that here, textbook is said, controllable silicon cut-off condition is when anode current reduces and is less than when maintaining electric current and can changes to cut-off direction, but concerning one-way SCR, theory and practice all illustrates, silicon controlled negative electrode is reduced to zero, controllable silicon still can be made towards the change of cut-off direction.) start triode due to quick-break controllable silicon and overvoltage response speed very fast, so have good protective effect.
3, the functional characteristics of overvoltage fast tripping protection.
One is the utilization of door voltage-stabiliser tube and overvoltage starting resistance, make startup rapid, in overvoltage start-up circuit, the voltage stabilizing value of door voltage-stabiliser tube is crucial, and it will ensure not conducting under normal circumstances, ensures again to start rapidly when there being overvoltage, therefore, its voltage stabilizing value should be less than the highest input value of three end integrated stable voltage circuits, and when such guarantee has an overvoltage, it first starts, and can not cause the damage of three end integrated stable voltage circuits.The size of overvoltage starting resistance resistance, is related to that overvoltage starts triode and whether starts sensitive, therefore, its resistance is just little than trigger resistance, the less overvoltage of its resistance starts triode and is more subject to trigger, but note can not be too small, and have impact on the normal utilization that overvoltage starts triode.Door voltage-stabiliser tube and overvoltage starting resistance cooperatively interact, and ensure that overvoltage starts triode and starts rapidly, reaction is fast.Control quick-break controllable silicon to disconnect rapidly, ensure that three end integrated stable voltage circuits can not be impaired.
Two be overvoltage start triode be the NPN triode of back-pressure value on 200V, its back-pressure value has exceeded several times than the input maximum voltage value of three end integrated stable voltage circuits, and therefore, it can not damage, and also ensure that the performance of overvoltage fast tripping protection.
Three, P type overcurrent monitoring circuit equipment or power supply itself break down electric current is changed time, overcurrent monitoring is sounded prompting immediately, is convenient to people and learns in time, process in time.
1, the principle of overcurrent monitoring is: once device fails is joined by institute or three-terminal voltage-stabilizing goes wrong, and PNP protects the pressure drop between transistor collector and base stage to change, and causes PNP to protect triode ON, makes sounding sheet send sound warning immediately.Protect the amplification of triode through PNP, even less change in pressure drop, sounding sheet also can be made to sound immediately warning.
2, PNP protects triode to possess " tracking " character, when electric current just has change in voltage, protects the amplification of triode through PNP; generation sound warning immediately; and when electric current recovers normal, PNP triode disconnects immediately, so form the monitoring to three terminal integrated voltage stabilizer and equipment.
3, the effect of isolating diode is; three-terminal voltage-stabilizing unit and sounding sheet are isolated; make the voltage of the input of three terminal integrated voltage stabilizer can not flow back to the collector electrode of PNP protection triode; when rectification output does not have problems; sounding sheet can not error starting, ensures that the warning of every infrasonic sound is all when breaking down.
4, the effect of pressure drop diode is, for the operating characteristic of PNP triode, PNP is protected between the collector electrode of triode and base stage and there is pressure reduction, allow PNP protect triode normally to work.Why do pressure drop without resistance but use diode to do pressure drop; be because; although resistance meets the function that PNP protects triode to amplify; but but can lose the voltage of three terminal integrated voltage stabilizer input; the electric current that the output of three terminal integrated voltage stabilizer needs is larger, and the loss of voltage of its input is more.And be to lose the magnitude of voltage of three terminal integrated voltage stabilizer input by the benefit of diode, because a diode is fixing 0.7V, therefore, no matter be that output needs big current or small area analysis, all can not produce the loss of voltage of input.
And pressure drop diode is with two Diode series, not only meet the enlarging function that PNP protects triode, also make PNP protect triode normally to work, more can reduce the loss of the input terminal voltage of three terminal integrated voltage stabilizer.
Four, compared with other 78 serial integrated regulator, following several heavy advantage has been possessed:
1, lightning protection grade is substantially increased.Its reason has overvoltage fast tripping protection; when the overvoltage of pressure or other reason is gushed in thunderbolt; start overvoltage fast tripping protection immediately; and quick-break controllable silicon and overvoltage start withstand voltage voltage that triode the combines maximum input voltage considerably beyond three end integrated stable voltage circuits; be almost about 10 times of the circuit of three-terminal voltage-stabilizing integrated input voltage of 78 series, be equivalent to ability to bear and improve 10 times.Therefore the ability of lightning protection anti-over voltage is greatly improved.
2, the ability of overcurrent monitoring is possessed; when three end integrated stable voltage circuits itself break down or arrange and standby produce fault; source current is caused to change; PNP now protects the pressure drop between transistor collector and base stage to change; P type overcurrent monitoring circuit starts immediately, and form auditory tone cues, it can monitor prompting constantly; therefore no matter be to security personnel's electric appliances or miscellaneous equipment, all there is very much meaning.
3, at ordinary times; identical function is had with three general end integrated stable voltage circuits; three end integrated stable voltage circuits use a very wide range of voltage stabilizing circuit; it is easy to use, cost is low, voltage regulation result is good; and this power supply is also maintaining on the advantageous basis of institute of three end integrated stable voltage circuits just; add the New function of overvoltage fast tripping protection and overcurrent monitoring, make the utilization of this power supply more extensive.
Five, have employed four rectifier diodes in bridge rectifier, four rectifier diodes are reliably withstand voltage, and rectification effect is good.
Following significant advantage is had after the invention process:
The quality of power supply, directly has influence on overall performance.Power source performance is good, then overall performance is good.Power supply be also usually the normal keypoint part damaged, but no matter be power supply itself or device fails, can embody in the supply, and can learn fault in time, on-call maintenance, be very important.
So be very significant to the research of power supply, and enforcement of the present invention has positive meaning.Advantage is as follows:
One, source of stable pressure voltage regulation result is good.Can provide stable voltage, because this circuit is three terminal integrated voltage stabilizer, its external piece is few, and stable performance is easy to use, is a kind of outstanding integrated regulator, and in this measure, has overcurrent protection again, so be a kind of outstanding voltage stabilizing circuit.
Two, the number of advantages of three end integrated stable voltage circuits is maintained; easy to use, cost is low, voltage regulation result good; and maintaining on the advantageous basis of institute of three end integrated stable voltage circuits, add the New function of overvoltage fast tripping protection and overcurrent monitoring, make the utilization of this power supply more extensive.
Three, overcurrent monitoring circuit function is reliable, shows:
1, trace property is possessed, when electric current just has change in voltage, generation sound warning immediately, and when electric current recovers normal, disconnect immediately, so form the monitoring to three terminal integrated voltage stabilizer and equipment.
2, possess amplification, PNP protects triode to possess amplification character, even small curent change, after the amplification that PNP protects triode, also can produce auditory tone cues.
3, possess reliability, because employ isolating diode and pressure drop diode, ensure that under normal circumstances, P type overcurrent monitoring circuit can not start, and ensures that each auditory tone cues all produces when breaking down.
Four, overvoltage capabilities is strong, shows following several respects:
1, improve lightning protection grade, quick-break controllable silicon and overvoltage start withstand voltage voltage that triode the combines maximum input voltage considerably beyond three end integrated stable voltage circuits, be almost about 10 times of the circuit of three-terminal voltage-stabilizing integrated input voltage of 78 series, be equivalent to ability to bear and improve 10 times.Therefore the ability of lightning protection anti-over voltage is greatly improved.
2, overvoltage is reliable.The voltage stabilizing value of door voltage-stabiliser tube is lower than the maximum input voltage value of three end integrated stable voltage circuits, therefore, when having overvoltage, is all first start overvoltage fast tripping protection at every turn, so can not damage three end integrated stable voltage circuits.
3, response rapidly.Door voltage-stabiliser tube and overvoltage starting resistance cooperatively interact, and ensure that overvoltage starts triode and starts rapidly, reaction is fast.Control quick-break controllable silicon to disconnect rapidly, ensure that three end integrated stable voltage circuits can not be impaired.
Five, circuit is simplified, and cost is low, easily produces and debugging.
Accompanying drawing explanation
Fig. 1 is the integrated circuit diagram of monitoring source of stable pressure of input quick-break type.
In figure: 1, the output of bridge rectifier; 2, sample resistance; 3, pressure drop diode; 4, PNP protects triode; 5, isolating diode; 6, door voltage-stabiliser tube; 7, overvoltage starting resistance; 8, overvoltage starts triode; 9, trigger resistance; 10, quick-break controllable silicon; 11, sounding sheet; 12, three end integrated stable voltage circuits; 13, the integrated output of monitoring source of stable pressure of input quick-break type.
Fig. 2 is rectifier transformer and bridge rectifier figure.
In figure: 1, the output of bridge rectifier; 01, input is exchanged; 02, rectifier transformer; 03, bridge rectifier.
Embodiment
Fig. 1, Fig. 2 are the integrated physical circuit connected modes of monitoring source of stable pressure of input quick-break type.
1, option:
Quick-break controllable silicon is one-way SCR.Overvoltage startup triode is the NPN triode sounding sheet of back-pressure value on 200V is the piezoelectric ceramic piece being with sound communication device.
2, weld by the line map of Fig. 1, transformer welds by Fig. 2 Suo Shi with bridge rectifier.
3, overcurrent protection is adjusted.The integrated output of monitoring source of stable pressure of input quick-break type connects one end of the 10 Europe resistance of 5 watts, and when clicking ground wire with the other end of resistance, sounding sheet is sounded prompting, otherwise adjusts the resistance of sample resistance.
4, lightning protection overvoltage protection is detected.Interchange of breaking inputs, the red test pencil of voltmeter is connected on that input quick-break type is integrated monitors in the output of source of stable pressure, black meter pen earth connection, clicks rectification export with 100V direct current, the now integrated output of monitoring source of stable pressure of input quick-break type should be 0, otherwise should adjust the resistance of overvoltage starting resistance.Disconnect 100V direct voltage, connect and exchange input, the integrated output output equipment operating voltage again of monitoring source of stable pressure of input quick-break type.
5, adjust the input terminal voltage of three end integrated stable voltage circuits: under normal circumstances, quick-break silicon controlled cathode voltage should only 0.7V lower than rectifier output voltage, otherwise, be trigger resistance resistance not to or quick-break controllable silicon damages.
Claims (5)
1. input quick-break type is integrated monitors source of stable pressure, it is characterized in that: be jointly made up of rectifier transformer, bridge rectifier, overvoltage start-up circuit, overvoltage fast tripping protection circuit, P type overcurrent monitoring circuit, three end integrated stable voltage circuits;
Wherein: the secondary termination connecting bridge formula rectification of rectifier transformer;
Overvoltage start-up circuit is started triode formed by door voltage-stabiliser tube, overvoltage starting resistance, overvoltage;
Overvoltage fast tripping protection circuit is made up of trigger resistance and quick-break controllable silicon;
P type overcurrent monitoring circuit protects triode by PNP, and pressure drop diode, isolating diode, sample resistance, sounding sheet form;
The output of one termination bridge rectifier of door voltage-stabiliser tube, the other end takes over one end of pressure starting resistance, and the other end of overvoltage starting resistance takes over the base stage that pressure starts triode, and overvoltage starts the grounded emitter line of triode;
Trigger resistance is connected on rectification output and quick-break silicon controlled controls between pole, and quick-break silicon controlled anode is connected on the negative pole of pressure drop diode, and quick-break silicon controlled controls pole and takes over the collector electrode that pressure starts triode;
PNP protects the emitter of triode to connect the output of bridge rectifier, between the emitter that sample resistance is connected on PNP protection triode and base stage, pressure drop diode cathode connects the base stage that PNP protects triode, negative pole connects quick-break silicon controlled anode, the positive pole of isolating diode connects the collector electrode that PNP protects triode, negative pole connects quick-break silicon controlled anode, between the collector electrode that sounding sheet is connected on PNP protection triode and ground wire;
Quick-break silicon controlled negative electrode connects the input of three end integrated stable voltage circuits, the earth terminal earth connection of three end integrated stable voltage circuits, and namely the output of three end integrated stable voltage circuits is the integrated output of monitoring source of stable pressure of input quick-break type.
2. input quick-break type according to claim 1 is integrated monitors source of stable pressure, it is characterized in that: quick-break controllable silicon is one-way SCR.
3. input quick-break type according to claim 1 is integrated monitors source of stable pressure, it is characterized in that: it is the NPN triode of back-pressure value on 200V that overvoltage starts triode.
4. input quick-break type according to claim 1 is integrated monitors source of stable pressure, it is characterized in that: bridge rectifier is that two rectifier diodes are connected into a branch road, its middle series connection point connects a secondary termination of rectifier transformer, another two rectification triodes series connection is another branch road, middle series connection point connects another secondary termination of rectifier transformer, the plus earth line of two branch roads, the negative pole of two branch roads is connected together becomes bridge rectifier output.
5. input quick-break type according to claim 1 is integrated monitors source of stable pressure, it is characterized in that: sounding sheet is the piezoelectric ceramic piece of band sound communication device.
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| CN201520599021.XU CN204992540U (en) | 2015-08-11 | 2015-08-11 | Steady voltage source can be monitored in integration of input quick -break type |
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| CN201520599021.XU CN204992540U (en) | 2015-08-11 | 2015-08-11 | Steady voltage source can be monitored in integration of input quick -break type |
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| CN201520599021.XU Expired - Fee Related CN204992540U (en) | 2015-08-11 | 2015-08-11 | Steady voltage source can be monitored in integration of input quick -break type |
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Granted publication date: 20160120 Termination date: 20160811 |