CN206181478U - Over -current protection formula emergency lighting circuit - Google Patents
Over -current protection formula emergency lighting circuit Download PDFInfo
- Publication number
- CN206181478U CN206181478U CN201621108040.9U CN201621108040U CN206181478U CN 206181478 U CN206181478 U CN 206181478U CN 201621108040 U CN201621108040 U CN 201621108040U CN 206181478 U CN206181478 U CN 206181478U
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- China
- Prior art keywords
- audion
- electric capacity
- resistance
- diode
- pole
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- Expired - Fee Related
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Abstract
The utility model discloses an over -current protection formula emergency lighting circuit, its characterized in that: mainly by diode rectifier U, operational amplifier P, triode VT1, triode VT2, battery GB, emergency light BL, switch KA, electric capacity C1, electric capacity C2, electric capacity C3, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, slide rheostat RP, zener diode D1 and diode D2 constitute. The utility model discloses a not only simple structure and cost are lower, still are convenient for maintain, the utility model has the advantages of reasonable design, can charge to battery GB when mains supply normal use, then the power supply of accessible battery GB when mains supply breaks off to make emergency light BL automatic lighting, can carry out emergency lighting, be fit for wide use.
Description
Technical field
This utility model is related to a kind of over-current protection type emergency light circuit.
Background technology
Emergency light can be in normal power source power-off or because the device being illuminated after fire-fighting accident power-off, although emergency light is not
Often use, but be requisite in the building of modernization.At present domestic power supply is more sufficient, emergency light using less,
Therefore need periodically to carry out Inspection and maintenance to emergency light, to ensure that emergency light can be used normally.Currently used for the control of emergency light
Circuit structure processed is more complicated, relatively more using electronic devices and components so that control circuit is relatively costly, while being also inconvenient for safeguarding
Maintenance.
Utility model content
The purpose of this utility model is to provide a kind of over-current protection type emergency light circuit, to expect that emergency light can be simplified
The structure of circuit, in order to Maintenance and Repair, while can also reduces cost.
This utility model is achieved through the following technical solutions：
A kind of over-current protection type emergency light circuit, mainly by diode rectifier U, operational amplifier P, audion VT1,
Audion VT2, accumulator GB, positive pole collectively constitutes power input, negative pole and two with an input of diode rectifier U
The electric capacity C1 that another input of pole pipe commutator U is connected, the resistance R1 being in parallel with electric capacity C1, positive pole is whole with diode
The cathode output end of stream device U is connected, the electric capacity C2 that negative pole is connected with the cathode output end of diode rectifier U, P poles and electricity
The negative pole of appearance C2 is connected, the Zener diode D1 that N poles are connected with the positive pole of electric capacity C2, and one end is connected with the positive pole of electric capacity C2
Connect, the cunning that the other end is connected with the outfan of operational amplifier P, control end is connected with the positive input terminal of operational amplifier P
Dynamic rheostat RP, the resistance R2 being serially connected between the negative input end of the negative pole of electric capacity C2 and operational amplifier P, positive pole Jing resistance R3
Be connected with the negative input end of operational amplifier P afterwards, the electric capacity C3 that negative pole is connected with the outfan of operational amplifier P, P poles Jing
Be connected with the base stage of audion VT1 after resistance R4, two poles that N poles are connected Jing after resistance R5 with the colelctor electrode of audion VT1
Pipe D2, the emergency light BL being serially connected between the emitter stage of audion VT2 and the negative pole of accumulator GB, and it is serially connected in audion
Switch KA compositions between the colelctor electrode of VT2 and the positive pole of accumulator GB；The P poles of the diode D2 are with operational amplifier P's
Outfan is connected, and its N pole is connected with the colelctor electrode of audion VT2；The colelctor electrode of the audion VT1 and audion VT2
Base stage be connected, its emitter stage is connected respectively with the negative pole of electric capacity C2 and the negative pole of accumulator GB.
Further, the audion VT1 is 3DG6 audions, and audion VT2 is 3DD50 audions.
Further, the diode rectifier U is the diode rectifier of four 1N4001 commutation diodes compositions.
In order to be better achieved this utility model, the Zener diode D1 is 2CW105 Zener diodes, diode D2
For 1N4001 commutation diodes.
In order to ensure effect, the operational amplifier P is LM324 type operational amplifiers.
This utility model compared with prior art, with advantages below and beneficial effect：
(1) it is of the present utility model to be not only simple in structure and cost is relatively low, it is also convenient for safeguarding.This utility model structure design is closed
Reason, can charge when power supply is normally used to accumulator GB, and then can be powered by accumulator GB when power supply disconnects, so that
Obtain emergency light BL to light automatically, you can carry out emergency lighting.
(2) operational amplifier P of the present utility model can group with slide rheostat RP, resistance R2, resistance R3 and electric capacity C3
Into a circuit overcurrent protection, the electronic component that electric current can be prevented excessive and damaged in circuit, the circuit overcurrent protection is also
Default current protection value can be adjusted by slide rheostat RP.
Description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Specific embodiment
This utility model is described in further detail with reference to embodiment, but embodiment of the present utility model is not
It is limited to this.
Embodiment
As shown in figure 1, over-current protection type emergency light circuit of the present utility model, mainly by diode rectifier U, computing
Amplifier P, audion VT1, audion VT2, accumulator GB, emergency light BL switchs KA, electric capacity C1, electric capacity C2, electric capacity C3, electricity
Resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, slide rheostat RP, Zener diode D1 and diode D2 composition.Its
In, accumulator GB uses 6V accumulator, and emergency light BL then uses the illuminating lamp of 6V, 0.3A.
During connection, the positive pole of the electric capacity C1 collectively constitutes power input with an input of diode rectifier U,
Its negative pole is connected with another input of diode rectifier U, and the power supply that this utility model is used is 220V civil powers.It is described
Resistance R1 is in parallel with electric capacity C1.The positive pole of the electric capacity C2 is connected with the cathode output end of diode rectifier U, its negative pole
It is connected with the cathode output end of diode rectifier U.The P poles of the Zener diode D1 are connected with the negative pole of electric capacity C2,
Its N pole is connected with the positive pole of electric capacity C2.One end of the slide rheostat RP is connected with the positive pole of electric capacity C2, its other end
It is connected with the outfan of operational amplifier P, its control end is connected with the positive input terminal of operational amplifier P.The resistance R2
It is serially connected between the negative input end of the negative pole of electric capacity C2 and operational amplifier P.The positive pole of the electric capacity C3 Jing after resistance R3 with fortune
The negative input end for calculating amplifier P is connected, and its negative pole is connected with the outfan of operational amplifier P.The P poles of the diode D2
It is connected with the base stage of audion VT1 Jing after resistance R4, its N pole is connected Jing after resistance R5 with the colelctor electrode of audion VT1.Institute
State emergency light BL to be serially connected between the emitter stage of audion VT2 and the negative pole of accumulator GB, the switch KA is serially connected in audion
Between the colelctor electrode of VT2 and the positive pole of accumulator GB.
Meanwhile, the P poles of the diode D2 are connected with the outfan of operational amplifier P, and its N pole is with audion VT2's
Colelctor electrode is connected.The colelctor electrode of the audion VT1 is connected with the base stage of audion VT2, its emitter stage respectively with electric capacity
The negative pole of C2 is connected with the negative pole of accumulator GB.
When using, closure switch KA, the resistance R1 and electric capacity C1 and diode rectifier U composition step-down rectifier electricity
Road, for carrying out step-down rectifier process to the mains supply of 220V.Wherein, diode rectifier U is four 1N4001 rectifications two
The diode rectifier of pole pipe composition, the resistance of the resistance R1 is 1M Ω, electric capacity C1 then adopt capacitance for 1.5 μ F electric capacity come
Realize, 220V power supplys 24V can be reduced to after blood pressure lowering.The electric capacity C2 is used to filter, and Zener diode D1 then can be played surely
The effect of pressure.During enforcement, the capacitance of the electric capacity C2 can adopt 100 μ F, the Zener diode D1 then to adopt 2CW105
Zener diode is realizing.
Operational amplifier P of the present utility model and slide rheostat RP, resistance R2, resistance R3 and electric capacity C3 can constitute one
Individual circuit overcurrent protection, the electronic component that electric current can be prevented excessive and damaged in circuit, circuit overcurrent protection can also lead to
Cross slide rheostat RP to adjust default current protection value.During enforcement, the adjustable extent of the resistance of the slide rheostat RP
For 0~1k Ω, the resistance of resistance R2 is 550 Ω, and the resistance of resistance R3 is 680 Ω, and the capacitance of electric capacity C3 is 120 μ F, and computing is put
Big device P uses LM324 type operational amplifiers.
When mains supply is normally used, the audion VT1 conductings, audion VT2 cut-offs, emergency light BL is in extinguishing
State.Meanwhile, mains supply can charge to accumulator GB.During enforcement, the audion VT1 adopts 3DG6 audions, audion
VT2 then adopts 3DD50 audions.In order to ensure practical effect, the resistance of the resistance R4 is 5.1k Ω, and resistance R5 is 1k
Ω, diode D2 are then realized using 1N4001 commutation diodes.It is described when mains supply has a power failure or needs power-off because of fire-fighting
Accumulator GB is powered, and audion VT2 conductings, emergency light BL is lit, you can carry out emergency lighting.
It is of the present utility model to be not only simple in structure and cost is relatively low, it is also convenient for safeguarding.This utility model reasonable in design,
Accumulator GB can be charged when mains supply is normally used, and then can be powered by accumulator GB when mains supply disconnects,
So that emergency light BL is lighted automatically, you can carry out emergency lighting.Meanwhile, operational amplifier P of the present utility model with slide
Rheostat RP, resistance R2, resistance R3 and electric capacity C3 can constitute a circuit overcurrent protection, electric current can be prevented excessive and damaged
Electronic component in circuit, the circuit overcurrent protection can also adjust default current protection value by slide rheostat RP.
As described above, just can preferably realize this utility model.
Claims (5)
1. a kind of over-current protection type emergency light circuit, it is characterised in that：Mainly by diode rectifier U, operational amplifier P,
Audion VT1, audion VT2, accumulator GB, positive pole collectively constitutes power input with an input of diode rectifier U
Electric capacity C1, the resistance R1 being in parallel with electric capacity C1 that end, negative pole are connected with another input of diode rectifier U, just
Pole is connected with the cathode output end of diode rectifier U, the electricity that negative pole is connected with the cathode output end of diode rectifier U
Hold C2, the Zener diode D1 that P poles are connected with the negative pole of electric capacity C2, N poles are connected with the positive pole of electric capacity C2, one end and electric capacity
The positive pole of C2 is connected, the other end is connected with the outfan of operational amplifier P, the positive input of control end and operational amplifier P
Slide rheostat RP, the resistance R2 being serially connected between the negative input end of the negative pole of electric capacity C2 and operational amplifier P that end is connected,
Positive pole is connected Jing after resistance R3 with the negative input end of operational amplifier P, negative pole is connected with the outfan of operational amplifier P
Electric capacity C3, P pole is connected Jing after resistance R4 with the base stage of audion VT1, N poles Jing after resistance R5 with the colelctor electrode of audion VT1
The diode D2 being connected, the emergency light BL being serially connected between the emitter stage of audion VT2 and the negative pole of accumulator GB, and string
The switch KA compositions being connected between the colelctor electrode of audion VT2 and the positive pole of accumulator GB；The P poles of the diode D2 and computing
The outfan of amplifier P is connected, and its N pole is connected with the colelctor electrode of audion VT2；The colelctor electrode of the audion VT1 with
The base stage of audion VT2 is connected, and its emitter stage is connected respectively with the negative pole of electric capacity C2 and the negative pole of accumulator GB.
2. a kind of over-current protection type emergency light circuit according to claim 1, it is characterised in that：The audion VT1
For 3DG6 audions, audion VT2 is 3DD50 audions.
3. a kind of over-current protection type emergency light circuit according to claim 1, it is characterised in that：The diode rectification
Device U is the diode rectifier of four 1N4001 commutation diodes compositions.
4. a kind of over-current protection type emergency light circuit according to claim 1, it is characterised in that：The Zener diode
D1 is 2CW105 Zener diodes, and diode D2 is 1N4001 commutation diodes.
5. a kind of over-current protection type emergency light circuit according to claim 1, it is characterised in that：The operational amplifier
P is LM324 type operational amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621108040.9U CN206181478U (en) | 2016-10-10 | 2016-10-10 | Over -current protection formula emergency lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621108040.9U CN206181478U (en) | 2016-10-10 | 2016-10-10 | Over -current protection formula emergency lighting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206181478U true CN206181478U (en) | 2017-05-17 |
Family
ID=58677261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621108040.9U Expired - Fee Related CN206181478U (en) | 2016-10-10 | 2016-10-10 | Over -current protection formula emergency lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206181478U (en) |
-
2016
- 2016-10-10 CN CN201621108040.9U patent/CN206181478U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20171010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |