CN203191869U - Voltage stabilizing power supply with open-circuit monitoring function - Google Patents
Voltage stabilizing power supply with open-circuit monitoring function Download PDFInfo
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- CN203191869U CN203191869U CN 201320119243 CN201320119243U CN203191869U CN 203191869 U CN203191869 U CN 203191869U CN 201320119243 CN201320119243 CN 201320119243 CN 201320119243 U CN201320119243 U CN 201320119243U CN 203191869 U CN203191869 U CN 203191869U
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Abstract
The utility model discloses a voltage stabilizing power supply with an open-circuit monitoring function and belongs to the technical field of household appliances. The voltage stabilizing power supply with the open-circuit monitoring function is composed of a rectifying unit, a voltage expanding unit, a first overvoltage limiting protective subcircuit, a second overvoltage limiting protective subcircuit, an open-circuit monitoring unit and a voltage stabilizing unit. The circuit is mixed by triodes and two kinds of active units of the 78 series integrated circuit. As is well-known, all electronic circuits need voltage stabilizing circuits, an ordinary three-end integrated circuit has excellent voltage stabilizing performance, yet the ordinary three-end integrated circuit can be damaged by lightning easily due to the fact that the input end of the ordinary three-end integrated circuit does not allow over-high input voltage, and managing personnel can not monitor the working condition of a matched load at any time when the ordinary three-end integrated circuit is used in special household appliances due to the unavailability of the monitoring function. The voltage stabilizing power supply with the open-circuit monitoring function can scientifically solve the problems mentioned and is quite suitable for application and development of electronic products.
Description
Technical field
The invention belongs to household appliance technical field.
Background technology
In present electronic circuit, used three end ic powers of 78 series widely, these integrated circuit are to aim at source of stable pressure and design, thereby a series of outstanding advantages are arranged.
But in use finding has following deficiency, and first is that input voltage is not very high, has only 30 volts usually, so overvoltage capabilities is poor, the shortcoming one of Chan Shenging is fragile in the big civil power of fluctuation like this, particularly easier generation when thunderbolt.The 2nd, do not have monitoring, when its meaning is supporting with circuit, whether can not monitor out institute's support circuit has problems, as supporting with security personnel's series products, if can not pinpoint the problems immediately, then security personnel produce device as illusory, and the user of service constantly pattern plan accident method check, (it is necessary making regular mock survey, but this inspection can not be accomplished everything trackingization constantly).Because above deficiency is so influenced exploitation and the application of electronic product.
Summary of the invention
Task of the present invention and purpose are the technical schemes that proposes, design a kind of new power, implementing back new power characteristics one is to keep 78 serial a series of advantages, the 2nd, can greatly adapt to the ability of city's electro-mechanical wave, particularly be difficult for causing the infringement of thunderbolt, the 3rd, have everything tracking and monitoring constantly and show, to adapt to the special requirement of electronic product.
The measure that the present invention adopts is
1, having the source of stable pressure of monitoring of opening a way is by rectification unit, voltage expanding element, overvoltage voltage-limiting protection first branch road, overvoltage voltage-limiting protection second branch road, and open circuit detecting unit, voltage regulation unit are formed jointly.
Wherein: the voltage expanding element is by triode and go up inclined to one side resistance and form jointly: having connected with the output of rectification unit has connected the collector of triode in this level behind the detection resistance; Connected the output of rectification stage with an end of a resistance, the other end of this resistance has connected the base stage of this grade triode; The emitter of this grade triode has connected the input end of three end integrated circuit.
Wherein overvoltage voltage-limiting protection first branch road is to be in series by a stabilivolt and resistance, has connected the base stage of triode in the voltage expanding element, other end ground connection with an end of stabilivolt positive pole.
Wherein overvoltage voltage-limiting protection second branch road is made up of a stabilivolt branch road, has connected the base stage of triode in the voltage expanding element, other end ground connection with an end of stabilivolt branch road positive pole.
The detecting unit of wherein opening a way is made of with peripheral element jointly a triode display circuit: be connected the output of rectification stage with the emitter of a triode, base stage connects the collector of triode in the voltage expanding element, and collector has connected display circuit.
Wherein voltage regulation unit is made up of 78 serial integrated circuit and peripheral element: the input stage with 78 serial integrated circuit has connected transistor emitter in the voltage expanding element, 78 serial integrated circuit earth terminals have connected ground connection behind the resistance, output terminal has connected an end of a resistance, and the other end of visiting resistance is connected 78 serial integrated circuit earth terminals.
The output terminal of 78 serial integrated circuit is last output terminals of the present invention.
2, one of display circuit form in the open circuit detecting unit is the collector that has been connected on triode in this level with the positive pole of a LED luminotron, the minus earth of LED luminotron; Two be to have connected with the base stage of second triode to be connected the collector of the triode of this level behind the resistance, be unified into a new branch road with LED luminotron and resistance string, the negative pole end of luminotron is connected on the collector of second triode in this new branch road, and the luminotron positive pole is extreme to be connected on the power supply.
After having taked above measure, the meaning cause description of generation is as follows:
One, after measure of the present invention is adopted, can realize three kinds of good effects, the one, good anti-thunder effect can be arranged, the 2nd, not fragile when civil power is higher, energy operate as normal when civil power is low; The 3rd, open circuit situation is not arranged in the time of following the tracks of load at any time.
When two, thunderbolt being arranged, usually being power supply perishable the time, is that take the to cut off the power supply mode in source is avoided as common household electrical appliances, because these class household electrical appliances are made interim power down process, can not produce serious consequence.But as the specialities of security personnel's class, it is blank to become security personnel as resolute power down source, is first emphasis of the present invention so improve anti-thunder effect.Reason with good anti-thunderbolt effect is that the base stage of voltage expanding element is connected with overvoltage voltage-limiting protection first branch road over the ground, overvoltage voltage-limiting protection second branch road, and two branch roads have formed tight anti-thunder pressure limiting effect jointly.
(1), composition and the meaning of overvoltage voltage-limiting protection first branch road: this branch road is 105 in the accompanying drawing and 106.Its meaning is, the stabilivolt of this branch road has occupied the leading part of voltage in the branch road, the voltage-to-ground that is to say transistor base is mainly determined by stabilivolt 105, so these triode 108 emitter-base bandgap gradings do not have high pressure output when having thunderbolt, hour still do not have high pressure output in thunderbolt, but when very big, resistance 106 both end voltage are too high in thunderbolt, may have bigger the output of limited voltage.Thereby formation first order lightning protection.
(2), composition and the meaning of overvoltage voltage-limiting protection second branch road: this branch road is 107 in the accompanying drawing.It should be noted that this branch road may be a stabilivolt, also may be that many stabilivolts are in series.Its meaning is; the voltage stabilizing value of the stabilivolt of this branch road is higher than the steady value of first branch road; so when not having thunderbolt, this branch road is by the first branch road clamper, no current passes through; when thunderbolt is very big; first branch road produce gush press excessive, be higher than the door of second branch road after, at this moment second branch road is open-minded; to the output pressure limiting again of voltage expanding element, form the protection second time of anti-thunder.Adopt the benefit of design like this to be, second branch road is not when circuit has thunderbolt, and not conducting electric current does not produce electrical wear, can prevent the accidental damage of element, and when thunderbolt is arranged, can play one's part to the full, thereby improve reliability greatly.
Three, the composition of monitoring means and meaning:
(1), form: the corresponding levels mainly by a PNP triode (accompanying drawing 109) detect resistance (in the accompanying drawing 104) and display circuit (in the accompanying drawing 1 110 and accompanying drawing 2 in 117 and 110 form jointly).
(2), form principle: when working properly, electric current is normal in the power supply, it is correct to detect resistance (in the accompanying drawing 104) both end voltage, cause triode (accompanying drawing 109) open-minded, so pilot lamp was bright state when indicating characteristic was non-fault in the accompanying drawing 1, is designated as lamp when indicating characteristic is non-fault in the accompanying drawing 2 and puts out state.After the electric current that breaks down reduced, the voltage that at this moment detects the resistance two ends reduced, triode (accompanying drawing 109) locking, so at this moment in the accompanying drawing 1 indicating characteristic be that pilot lamp puts out.So indicating characteristic is that pilot lamp is bright in the accompanying drawing 2.
Three, the reason that can not damage circuit in the higher place of civil power and period is that triode 108 is high inverse-voltage tubes, and very strong back-pressure value is arranged, and can bear thunderbolt, also can bear the civil power condition with higher fully.
Four, can be in the main cause of the lower place of civil power and period work: triode be high inverse-voltage tube in because of the voltage expanding element, so when design, can design the bridge-type output voltage higherly, when civil power was low, at this moment bridge-type voltage can not be very low, just can do certain compensation.
Five, can adjust the reason of different output voltage stabilizing values.Owing to increased peripheral element adjustable resistance 111 and 112 in the measure, thereby can be on reference voltage, realize that again output voltage adjusts flexibly, with the realization normal voltage required to the accumulator floating charge, as 6,6 volts; 12,8 volts, etc.
Following significant advantage is arranged after the invention process:
1, anti-thunder and overvoltage protection effect are fine.So at thunderstorm season, needn't make power down process, institute's adapted equipment can if be used on security personnel's equipment, not guarantee that security personnel do not produce blank because thundery sky quits work.Its reason one is overvoltage voltage-limiting protection first branch road, overvoltage voltage-limiting protection second branch road, and implementing the back has very strong inhibiting effect to thunderbolt; two is that second branch road is because not conducting when not having thunderbolt; do not produce " consumption ", the unexpected malfunctioning possibility of generation is very little, has improved reliability.Topmost thirdly is that the model of " suctioning through voltage " low anti-thunder tube is difficult for having bought; and the first branch road voltage stabilizing diode 105 among the present invention; and the model scope of the stabilivolt 107 of second branch road is extremely wide; be easy to required " suctioning through " magnitude of voltage of supporting one-tenth, suction through 30 volts of following protections of voltage so be easy to supporting one-tenth.
2, have fault open circuit monitoring function, very important to the household electrical appliances of this class of protector, because if the household electrical appliances of joining are malfunctioning, managerial personnel can observe and handle at any time, and can not produce " security personnel are blank " situation, and the envoy is relieved.And measure monitoring indication of the present invention is fairly obvious, is shown as the bright form of indication in the time of can being designed to fault, and being shown as pilot lamp in the time of also can being designed to fault is the form of putting out.
3, adaptation is wide, than traditional stabilized voltage supply wideer adaptive faculty is arranged, and at the voltage height that meets accident, can not damage.And also can operate as normal in voltage lower place and period.
4, available adjustment output is convenient to the floating charge of accumulator science for the voltage stabilizing value that decimal is arranged.Has overcurrent protection simultaneously.Be fruitful or other electronic products have excellent performance after supporting.
5, voltage regulation performance excellence is because it has all advantages of three end integrated regulated power supplies.
6, easily produce, workable.Reason 1 has adopted complex function, the simple in circuits compactness; The 2nd, because the debug point in the circuit is few.The 3rd,, the very easy quantification of debug point, the debugging scope is loose.
Description of drawings
Fig. 1 is the circuit diagram that fault is shown as the form of putting out.
Among the figure: 101, step down side input; 102, rectification unit output; 103, the last inclined to one side resistance of triode in the voltage expanding element; 104, detect resistance; 105, the stabilivolt in overvoltage voltage-limiting protection first branch road; 106, the resistance in overvoltage voltage-limiting protection first branch road; 107, the stabilivolt in overvoltage voltage-limiting protection second branch road; 108, the triode in the voltage expanding element; 109, the PNP triode in the open circuit detecting unit; 110, fault shows luminotron; Inclined to one side resistance in the 111 output voltage accurate adjustments; 112, inclined to one side resistance under the output voltage accurate adjustment; 113, three end integrated stable voltage circuits; 115, voltage stabilizing output.
Fig. 2 is the circuit diagram that fault is shown as bright form.
Among the figure: 101, step down side input; 102, rectification unit output; 103, the last inclined to one side resistance of triode in the voltage expanding element; 104, detect resistance; 105, the stabilivolt in overvoltage voltage-limiting protection first branch road; 106, the resistance in overvoltage voltage-limiting protection first branch road; 107, the stabilivolt in overvoltage voltage-limiting protection second branch road; 108, the triode in the voltage expanding element; 109, the PNP triode in the open circuit detecting unit; 110, fault shows luminotron; Inclined to one side resistance in the 111 output voltage accurate adjustments; 112, inclined to one side resistance under the output voltage accurate adjustment; 113, three end integrated stable voltage circuits; 115, voltage stabilizing output; 117, second anti-phase triode in the open circuit detecting unit.
Embodiment
,Selected triode, three end integrated stable voltage circuits, wherein triode is selected high back-pressure high power valve, as 3DD15.The parameter value of 105 voltage stabilizing diodes should be higher than three ends input ceiling voltage.The parameter value of 107 voltage stabilizing diodes should be higher than the parameter value of 105 voltage stabilizing diodes.
2, press the wiring diagram welding of Fig. 1 or Fig. 2.Wherein welding Fig. 1 is when fault, is designated as the form of putting out.Welding Fig. 2 is the bright form that is designated as when fault.
3, adjust the power supply output valve.Adjust in the accurate adjustment of three end integrated circuit partially resistance and inclined to one side resistance down, make it the accurate requirement of voltage conforms accumulator floating charge, as 6,6 volts, 12,8 volts etc.Its rule is that inclined to one side resistance 110 is more big down, and output voltage is more high, otherwise more low.
4, detect and debug the overvoltage protection parameter.The transformer primary side that breaks, voltage table is connected on the output of voltage expanding element accompanying drawing 108 triodes; Click rectifier terminal with the DC voltage of high pressure, voltage table shows that output is always necessarily can be by being worth, during with higher voltage striking rectifier terminal, voltage table be shown as a definite value that more is higher than last time, but a complete acceptable magnitude of voltage.
5, detect and debugging open circuit monitoring means parameter: connect adjustable fictitious load at output terminal of the present invention, adjust the value of fictitious load, when load during for load just often, the situation of accompanying drawing 1 is that lamp is bright, and when load reduced, lamp put out, otherwise should adjust detection resistance 104.Be that lamp puts out when the situation of accompanying drawing 2 is load just often, when load reduced, when load reduced, lamp was shown as bright.
Claims (2)
1. have the source of stable pressure of open circuit monitoring, it is characterized in that: by rectification unit, voltage expanding element, overvoltage voltage-limiting protection first branch road, overvoltage voltage-limiting protection second branch road, open circuit detecting unit, voltage regulation unit are formed jointly;
Wherein: the voltage expanding element is by triode and go up inclined to one side resistance and form jointly: having connected with the output of rectification unit has connected the collector of triode in this level behind the detection resistance; Connected the output of rectification stage with an end of a resistance, the other end of this resistance has connected the base stage of this grade triode; The emitter of this grade triode has connected the input end of three end integrated circuit;
Wherein overvoltage voltage-limiting protection first branch road is to be in series by a stabilivolt and resistance, has connected the base stage of triode in the voltage expanding element, other end ground connection with an end of stabilivolt positive pole;
Wherein overvoltage voltage-limiting protection second branch road is made up of a stabilivolt branch road, has connected the base stage of triode in the voltage expanding element, other end ground connection with an end of stabilivolt branch road positive pole;
The detecting unit of wherein opening a way is made of with peripheral element jointly a triode display circuit: be connected the output of rectification stage with the emitter of a triode, base stage connects the collector of triode in the voltage expanding element, and collector has connected display circuit;
Wherein voltage regulation unit is made up of 78 serial integrated circuit and peripheral element: the input stage with 78 serial integrated circuit has connected transistor emitter in the voltage expanding element, 78 serial integrated circuit earth terminals have connected ground connection behind the resistance, output terminal has connected an end of a resistance, and the other end of visiting resistance is connected 78 serial integrated circuit earth terminals;
The output terminal of 78 serial integrated circuit is last output terminals of the present invention.
2. the source of stable pressure with open circuit monitoring as claimed in claim 1, it is characterized in that: one of display circuit form in the open circuit detecting unit is the collector that has been connected on triode in this level with the positive pole of a LED luminotron, the minus earth of LED luminotron; Two be to have connected with the base stage of second triode to be connected the collector of the triode of this level behind the resistance, be unified into a new branch road with LED luminotron and resistance string, the negative pole end of luminotron is connected on the collector of second triode in this new branch road, and the luminotron positive pole is extreme to be connected on the power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320119243 CN203191869U (en) | 2013-03-16 | 2013-03-16 | Voltage stabilizing power supply with open-circuit monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320119243 CN203191869U (en) | 2013-03-16 | 2013-03-16 | Voltage stabilizing power supply with open-circuit monitoring function |
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| Publication Number | Publication Date |
|---|---|
| CN203191869U true CN203191869U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320119243 Expired - Fee Related CN203191869U (en) | 2013-03-16 | 2013-03-16 | Voltage stabilizing power supply with open-circuit monitoring function |
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| CN (1) | CN203191869U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936162A (en) * | 2015-12-29 | 2017-07-07 | 重庆宁来科贸有限公司 | A kind of Power Management Design scheme upgraded by integrated circuit |
| CN113219233A (en) * | 2021-04-30 | 2021-08-06 | 石家庄宇飞电子有限公司 | Voltage expansion circuit for high-side current sampling |
-
2013
- 2013-03-16 CN CN 201320119243 patent/CN203191869U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936162A (en) * | 2015-12-29 | 2017-07-07 | 重庆宁来科贸有限公司 | A kind of Power Management Design scheme upgraded by integrated circuit |
| CN106936162B (en) * | 2015-12-29 | 2019-11-05 | 重庆宁来科贸有限公司 | A kind of power supply design method upgraded by integrated circuit |
| CN113219233A (en) * | 2021-04-30 | 2021-08-06 | 石家庄宇飞电子有限公司 | Voltage expansion circuit for high-side current sampling |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20140316 |