CN205693329U - A kind of over-and under-voltage indicating circuit - Google Patents
A kind of over-and under-voltage indicating circuit Download PDFInfo
- Publication number
- CN205693329U CN205693329U CN201620653743.3U CN201620653743U CN205693329U CN 205693329 U CN205693329 U CN 205693329U CN 201620653743 U CN201620653743 U CN 201620653743U CN 205693329 U CN205693329 U CN 205693329U
- Authority
- CN
- China
- Prior art keywords
- pole
- relay
- resistance
- way scr
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model discloses a kind of over-and under-voltage indicating circuit, including diode D1, resistance R1, audion VT1, electric capacity C1, electric capacity C2, one-way SCR VS1 and one-way SCR VS2, described diode D1 negative pole connects input Vi, audion VT1 emitter stage and resistance R3 respectively, diode D1 positive pole connects resistance R1 and resistance R2 respectively, the resistance R2 other end connecting triode VT1 base stage and audion VT2 base stage respectively, audion VT1 colelctor electrode connects the G pole of one-way SCR VS2 by electric capacity C2.This utility model over-and under-voltage indicating circuit, multiple one-way SCR is used to coordinate audion and relay to be controlled, input Vi voltage effectively carrying out over-and under-voltage instruction, and the existence of relay J 1 and J2 can guarantee that two one-way SCRs can not simultaneously turn on, stability is high.
Description
Technical field
This utility model relates to a kind of indicating circuit, specifically a kind of over-and under-voltage indicating circuit.
Background technology
Along with popularizing of present electrical equipment, bring revolutionary change to industrial and agricultural production, Defence business, science and technology,
Accelerating the development of society, people have stepped into Electrification Age, also make the quality of life of people be greatly improved, also
Increasingly it be unable to do without these electric equipments.Along with the development of science and technology, the precision of electric equipment also gradually steps up, and there occurs overturns the heavens covers
The change on ground, but how to protect the most interfered by outside of these electric equipments, become the master that current development in science and technology is paid close attention to
Want problem.The electrical network of China is popularized at present, and it is many convenient that huge network system gives us.But it is as accessing electrical network
User increase, and the variation of consumer electronics, also result in the instability of line voltage, voltage fluctuated, also become
Damage the principal element of electric equipment.How to protect electrical equipment when change in voltage is bigger, become people to study now
One direction, and voltage is monitored, just inevitably needing voltage is carried out sample detecting, current voltage sample is examined
The means very diversification surveyed, a lot of means are all to use special integrated chip that voltage carries out sampling display, relatively costly.
Utility model content
The purpose of this utility model is to provide a kind of over-and under-voltage indicating circuit, to solve to propose in above-mentioned background technology
Problem.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of over-and under-voltage indicating circuit, including diode D1, resistance R1, audion VT1, electric capacity C1, electric capacity C2, unidirectional
Controllable silicon VS1 and one-way SCR VS2, described diode D1 negative pole connects input Vi, audion VT1 emitter stage and electricity respectively
Resistance R3, diode D1 positive pole connects resistance R1 and resistance R2 respectively, resistance R2 other end connecting triode VT1 base stage and three respectively
Pole pipe VT2 base stage, audion VT1 colelctor electrode connects the G pole of one-way SCR VS2, the A of one-way SCR VS2 by electric capacity C2
Pole connects relay J 2 contact J2-1, the relay J 2 contact J2-1 other end connecting triode VT2 emitter stage and electric capacity C1 respectively,
The electric capacity C1 other end connects the G pole of one-way SCR VS1, and the A pole of one-way SCR VS1 connects relay J 2 coil, relay
The J2 coil other end connects the resistance R1 other end, and the K pole of one-way SCR VS1 connects relay J 1 contact J1-1, relay J 1
Contact J1-1 other end connecting luminous diode LED1 positive pole, LED 1 negative pole connecting luminous diode LED2 negative pole
And ground connection, wide diode (LED) 2 positive pole connects the K pole of one-way SCR VS2 by relay J 1 coil.
As further program of the utility model: described one-way SCR VS1 and VS2 all uses TL431.
As further program of the utility model: described diode D1 is Zener diode.
As further program of the utility model: described relay J 1 contact J1-1 and relay J 2 contact J2-1 is
Normally-closed contact.
As this utility model further scheme: described input Vi is voltage sample end.
Compared with prior art, the beneficial effects of the utility model are: this utility model over-and under-voltage indicating circuit, use
Multiple one-way SCRs coordinate audion and relay to be controlled, and effectively input Vi voltage are carried out over-and under-voltage and refer to
Showing, and the existence of relay J 1 and J2 can guarantee that two one-way SCRs can not simultaneously turn on, stability is high.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of over-and under-voltage indicating circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Referring to Fig. 1, in this utility model embodiment, a kind of over-and under-voltage indicating circuit, including diode D1, resistance
R1, audion VT1, electric capacity C1, electric capacity C2, one-way SCR VS1 and one-way SCR VS2, described diode D1 negative pole is respectively
Connecting input Vi, audion VT1 emitter stage and resistance R3, diode D1 positive pole connects resistance R1 and resistance R2, resistance respectively
The R2 other end connecting triode VT1 base stage and audion VT2 base stage respectively, audion VT1 colelctor electrode connects single by electric capacity C2
To the G pole of controllable silicon VS2, the A pole of one-way SCR VS2 connect relay J 2 contact J2-1, relay J 2 contact J2-1 another
End connecting triode VT2 emitter stage and electric capacity C1 respectively, the electric capacity C1 other end connects the G pole of one-way SCR VS1, unidirectional controlled
The A pole of silicon VS1 connects relay J 2 coil, and the relay J 2 coil other end connects the resistance R1 other end, one-way SCR VS1's
K pole connects relay J 1 contact J1-1, relay J 1 contact J1-1 other end connecting luminous diode LED1 positive pole, light-emitting diodes
Pipe LED1 negative pole connecting luminous diode LED2 negative pole ground connection, wide diode (LED) 2 positive pole connects single by relay J 1 coil
To the K pole of controllable silicon VS2；Described one-way SCR VS1 and VS2 all uses TL431；Described diode D1 is Zener diode；
Described relay J 1 contact J1-1 and relay J 2 contact J2-1 is normally-closed contact；Described input Vi is voltage sample end.
Referring to Fig. 1, when input Vi voltage signal is more than the voltage stabilizing value of Zener diode D1, Zener diode D1 leads
Logical, audion VT2 turns on, and audion VT1 ends, and triggers signal by electric capacity C1 to one-way SCR VS1 mono-, unidirectional controlled
Silicon VS1 turns on, and LED 1 is lighted, and relay J 2 action simultaneously makes J2-1 contact disconnect；When input Vi voltage is believed
During number less than the voltage stabilizing value of Zener diode D1, Zener diode D1 ends, and audion VT1 turns on, and audion VT2 ends, logical
Crossing electric capacity C2 and trigger signal to one-way SCR VS2 mono-, one-way SCR VS2 turns on, and LED 2 is lighted, simultaneously
Relay J 1 action, makes J1-1 contact disconnect；Adding two relay J 1 and J2 is due to the turn-off characteristic of one-way SCR VS
Determine, owing to one-way SCR can be become conducting from shutoff under external control signal effect, but once turn on, external signal
Just cannot turn it off, can only turn it off by removing to load or reduce its both end voltage, so, add relay J 1 and J2 energy
Enough ensure that VS1 and VS2 can not simultaneously turn on.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new
Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall
All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting
Involved claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (5)
1. an over-and under-voltage indicating circuit, including diode D1, resistance R1, audion VT1, electric capacity C1, electric capacity C2, unidirectional can
Control silicon VS1 and one-way SCR VS2, it is characterised in that described diode D1 negative pole connects input Vi, audion VT1 respectively
Emitter stage and resistance R3, diode D1 positive pole connects resistance R1 and resistance R2 respectively, resistance R2 other end connecting triode respectively
VT1 base stage and audion VT2 base stage, audion VT1 colelctor electrode by electric capacity C2 connect one-way SCR VS2 G pole, unidirectional can
The A pole of control silicon VS2 connects relay J 2 contact J2-1, and J2-1 other end connecting triode VT2 respectively in relay J 2 contact launches
Pole and electric capacity C1, the electric capacity C1 other end connects the G pole of one-way SCR VS1, and the A pole of one-way SCR VS1 connects relay J 2
Coil, the relay J 2 coil other end connects the resistance R1 other end, and the K pole of one-way SCR VS1 connects relay J 1 contact J1-
1, relay J 1 contact J1-1 other end connecting luminous diode LED1 positive pole, LED 1 negative pole connects light-emitting diodes
Pipe LED2 negative pole ground connection, wide diode (LED) 2 positive pole connects the K pole of one-way SCR VS2 by relay J 1 coil.
Over-and under-voltage indicating circuit the most according to claim 1, it is characterised in that described one-way SCR VS1 and VS2 is equal
Use TL431.
Over-and under-voltage indicating circuit the most according to claim 1, it is characterised in that described diode D1 is voltage stabilizing two pole
Pipe.
Over-and under-voltage indicating circuit the most according to claim 1, it is characterised in that described relay J 1 contact J1-1 and continuing
Electrical equipment J2 contact J2-1 is normally-closed contact.
Over-and under-voltage indicating circuit the most according to claim 1, it is characterised in that described input Vi is voltage sample
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653743.3U CN205693329U (en) | 2016-06-28 | 2016-06-28 | A kind of over-and under-voltage indicating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620653743.3U CN205693329U (en) | 2016-06-28 | 2016-06-28 | A kind of over-and under-voltage indicating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205693329U true CN205693329U (en) | 2016-11-16 |
Family
ID=57426086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620653743.3U Expired - Fee Related CN205693329U (en) | 2016-06-28 | 2016-06-28 | A kind of over-and under-voltage indicating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205693329U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530776A (en) * | 2016-12-26 | 2017-03-22 | 海宁泰诺照明电器有限公司 | LED intelligent traffic signal lamp having voltage-stabilizing function |
-
2016
- 2016-06-28 CN CN201620653743.3U patent/CN205693329U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530776A (en) * | 2016-12-26 | 2017-03-22 | 海宁泰诺照明电器有限公司 | LED intelligent traffic signal lamp having voltage-stabilizing function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204407858U (en) | A kind of overvoltage crowbar | |
| CN204316078U (en) | A kind of power automatic switch circuit with over-voltage over-current protection | |
| CN205693329U (en) | A kind of over-and under-voltage indicating circuit | |
| CN103248034B (en) | Can the USB flash disk of lightning protection | |
| CN106786462B (en) | A kind of amplifier switching mode overvoltage crowbar | |
| CN205489446U (en) | Intelligence supply control circuit | |
| CN206074678U (en) | A kind of line voltage exception indicating circuit | |
| CN205693352U (en) | A kind of overvoltage crowbar based on one-way SCR | |
| CN203243034U (en) | Camera with electrostatic protection function | |
| CN205070393U (en) | Industrial equipment overvoltage protection control circuit | |
| CN106300269A (en) | A kind of type voltage regulation overcurrent power-off indicating circuit | |
| CN204613341U (en) | A kind of testing circuit for voice-frequency cable | |
| CN205384312U (en) | Intelligence over - voltage detection circuit system | |
| CN207529331U (en) | There is the computer of USB power supply protections | |
| CN207251245U (en) | A kind of charge protector | |
| CN205610478U (en) | Many functional safety electrical source controller | |
| CN202330537U (en) | Overvoltage detecting circuit based on voltage regulator diode | |
| CN204681147U (en) | A kind of constant-current charging circuit of adjustable current | |
| CN206461340U (en) | A kind of DC over-voltage protection circuit | |
| CN204859023U (en) | Low pressure automatic switching circuit | |
| CN207529333U (en) | Computer with anti-electric current impact function | |
| CN104808101A (en) | Audio cable detection circuit | |
| CN204256026U (en) | A kind of voltage sampling circuit | |
| CN202145515U (en) | Lightning protective socket | |
| CN203206325U (en) | Mobile phone having lightning protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Guodong Inventor before: Hou Feiyan |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170223 Address after: 225003 Taiping Road, Jiangsu, Yangzhou, No. 54 Patentee after: Yangzhou Sentai Electrical Equipment Co.,Ltd. Address before: 362000 Fujian city of Quanzhou province Nanan city Kang Mei Zhen Village Village No. 272 unity Patentee before: Nanan TEDA Industrial Design Co. Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20190628 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |