CN204559984U - A kind of emergency light circuit - Google Patents
A kind of emergency light circuit Download PDFInfo
- Publication number
- CN204559984U CN204559984U CN201520312394.4U CN201520312394U CN204559984U CN 204559984 U CN204559984 U CN 204559984U CN 201520312394 U CN201520312394 U CN 201520312394U CN 204559984 U CN204559984 U CN 204559984U
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Abstract
The utility model discloses a kind of emergency light circuit, comprise charging circuit, protective circuit, resistance R1, one termination power of electric capacity C1, another termination capacitor C2 of resistance R1, resistance R2 one end, an input of NOR gate U2, another termination capacitor C2 other end of electric capacity C1, another termination triode of resistance R2 Q1 emitter, triode Q1 base stage connects NOR gate U2 output, another input termination photo resistance of NOR gate U2 R3, adjustable resistance RP one end, adjustable resistance RP other end ground connection, another termination power of photo resistance R3, triode Q1 collector connecting relay KA1 coil one end, diode D1 positive pole, the relay K A1 coil other end, diode D1 negative pole connects power supply, when powering normal, protective circuit can ensure that battery is unlikely to over-discharge can, when light is brighter, power failure bulb is not also lighted, available protecting battery.
Description
Technical field
The utility model relates to a kind of emergency light, specifically, relates to a kind of emergency light circuit, belongs to electronic technology field.
Background technology
At present, traditional emergency light adopts storage battery as emergency power supply usually, realizes the charge and discharge control to storage battery by change-over circuit, it is general when electrical network does not have power-off, storage battery is in charged state always, cannot discharge, and affects the life-span of storage battery; On the other hand, during electric discharge, easily cause over-discharge can, also can cause shorten the useful life of storage battery.
Utility model content
The technical problems to be solved in the utility model is for above deficiency, provides a kind of emergency light circuit, adopts this circuit, and can ensure that battery is unlikely to over-discharge can, adequately protect battery.
For solving above technical problem, the utility model by the following technical solutions: a kind of emergency light circuit, is characterized in that: comprise the charging circuit, the protective circuit that are electrically connected with rechargeable battery E;
Described protective circuit comprises resistance R1, resistance R2, photo resistance R3, adjustable resistance RP, electric capacity C1, electric capacity C2, NOR gate U2, triode Q1, diode D1 and relay K A1;
One end of described resistance R1, the one termination positive source of electric capacity C1, one end of another termination capacitor C2 of resistance R1, one end of resistance R2, an input of NOR gate U2, the other end of another termination capacitor C2 of electric capacity C1, the emitter of another termination triode Q1 of resistance R2, the base stage of triode Q1 connects the output of NOR gate U2, one end of another input termination photo resistance R3 of NOR gate U2, one end of adjustable resistance RP, the other end ground connection of adjustable resistance RP, one end of the collector connecting relay KA1 coil of triode Q1, the positive pole of diode D1, the other end of photo resistance R3, the other end of relay K A1 coil, the negative pole of diode D1 connects power supply.
The positive pole of described rechargeable battery E is through relay K A1 normally open contact, bulb DL ground connection.
Described emergency light circuit also comprises three terminal regulator U1, rectifier bridge DB, electric capacity C3 and electric capacity C4, the input of three terminal regulator U1, one end of electric capacity C3, rechargeable battery E connect the positive output end of charging circuit, one end of the output termination capacitor C4 of three terminal regulator U1, the negative pole of diode D1, the other end ground connection of the negative pole of rechargeable battery E, the other end of electric capacity C3, electric capacity C4.
The input of described rectifier bridge DB, charging circuit all connects outer network source.
After the utility model adopts above technical scheme, compared with prior art, have the following advantages: when powering normal, protective circuit can ensure that battery is unlikely to over-discharge can, and when light is brighter, even if having a power failure, bulb is not also lighted, and effectively protects battery.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit diagram of emergency light circuit in the utility model embodiment;
In figure,
1-charging circuit, 2-protective circuit.
Embodiment
Embodiment, as shown in Figure 1, a kind of emergency light circuit, comprises the charging circuit 1, the protective circuit 2 that couple with rechargeable battery E.
Protective circuit 2 comprises resistance R1, resistance R2, photo resistance R3, adjustable resistance RP, electric capacity C1, electric capacity C2, NOR gate U2, triode Q1, diode D1 and relay K A1, one end of resistance R1, the positive output end of the one termination rectifier bridge DB of electric capacity C1, one end of another termination capacitor C2 of resistance R1, one end of resistance R2, an input of NOR gate U2, the other end of another termination capacitor C2 of electric capacity C1, the emitter of another termination triode Q1 of resistance R2, the base stage of triode Q1 connects the output of NOR gate U2, one end of another input termination photo resistance R3 of NOR gate U2, one end of adjustable resistance RP, the other end ground connection of adjustable resistance RP, another termination power of photo resistance R3, one end of the collector connecting relay KA1 coil of triode Q1, the positive pole of diode D1, the other end of relay K A1 coil, the negative pole of diode D1 connects power supply.
The positive pole of rechargeable battery E is through relay K A1 normally open contact, bulb DL ground connection.
Emergency light circuit also comprises three terminal regulator U1, rectifier bridge DB, electric capacity C3 and electric capacity C4, the input of three terminal regulator U1, one end of electric capacity C3, rechargeable battery E connect the positive output end of charging circuit 1, one end of the output termination capacitor C4 of three terminal regulator U1, the negative pole of diode D1, the other end ground connection of the negative pole of rechargeable battery E, the other end of electric capacity C3, electric capacity C4.
The input of rectifier bridge DB, charging circuit 1 all connects outer network source.
When powering normal, relay K A1 coil, without power supply, is failure to actuate, and charging circuit 1 charges for rechargeable battery E, and bulb DL does not work.Bulb lights that need to meet two conditions 1, light enough dark, and 2, grid power blackout.The output voltage of three terminal regulator U1 is added to another input of OR-NOT circuit U2 through photo resistance R3 and adjustable resistance RP dividing potential drop, when light is brighter, photo resistance R3 resistance is little, OR-NOT circuit U2 input terminal voltage is higher, is high level, OR-NOT circuit U2 output low level 0, when dark, resistance R3 resistance becomes large, and OR-NOT circuit U2 input terminal voltage is lower, is low level.Now, if grid power blackout, through rectifier bridge DB rectification, the voltage that electric capacity C1 filtering obtains reduces to 0, the voltage being added to OR-NOT circuit U2 two ends through resistance R1, resistance R2 dividing potential drop is 0, for low level, OR-NOT circuit U2 input is low level, exports high level 1, triode Q1 saturation conduction, relay K A1 coil electricity, the normally open contact of relay K A1 closes, and bulb DL lights.When the certain numerical value of the voltage drop of battery E, three terminal regulator U1 can not get normal input voltage, cannot normally export 5V voltage, relay K A1 coil blackout, and normally open contact disconnects, and ensures that battery is unlikely to over-discharge can, effective protection battery E.
This electric circuit characteristic: when 1, light is brighter, even if having a power failure, bulb is not also lighted.2, the protection to battery has been taken into full account.
Above three terminal regulator U1, OR-NOT circuit U2 all adopt known products on sale on market.
Those skilled in the art will recognize that; above-mentioned embodiment is exemplary; to enable those skilled in the art better understand the utility model content; should not be understood as the restriction to the utility model protection range; as long as according to the improvement that technical solutions of the utility model are done, all fall into protection range of the present utility model.
Claims (4)
1. an emergency light circuit, is characterized in that: comprise the charging circuit (1), the protective circuit (2) that are electrically connected with rechargeable battery E;
Described protective circuit (2) comprises resistance R1, resistance R2, photo resistance R3, adjustable resistance RP, electric capacity C1, electric capacity C2, NOR gate U2, triode Q1, diode D1 and relay K A1;
One end of described resistance R1, the one termination positive source of electric capacity C1, one end of another termination capacitor C2 of resistance R1, one end of resistance R2, an input of NOR gate U2, the other end of another termination capacitor C2 of electric capacity C1, the emitter of another termination triode Q1 of resistance R2, the base stage of triode Q1 connects the output of NOR gate U2, one end of another input termination photo resistance R3 of NOR gate U2, one end of adjustable resistance RP, the other end ground connection of adjustable resistance RP, one end of the collector connecting relay KA1 coil of triode Q1, the positive pole of diode D1, the other end of photo resistance R3, the other end of relay K A1 coil, the negative pole of diode D1 connects power supply.
2. emergency light circuit as claimed in claim 1, is characterized in that: the positive pole of described rechargeable battery E is through relay K A1 normally open contact, bulb DL ground connection.
3. emergency light circuit as claimed in claim 2, it is characterized in that: described emergency light circuit also comprises three terminal regulator U1, rectifier bridge DB, electric capacity C3 and electric capacity C4, the input of three terminal regulator U1, one end of electric capacity C3, rechargeable battery E connect the positive output end of charging circuit (1), one end of the output termination capacitor C4 of three terminal regulator U1, the negative pole of diode D1, the other end ground connection of the negative pole of rechargeable battery E, the other end of electric capacity C3, electric capacity C4.
4. emergency light circuit as claimed in claim 3, is characterized in that: the input of described rectifier bridge DB, charging circuit (1) all connects outer network source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520312394.4U CN204559984U (en) | 2015-05-08 | 2015-05-08 | A kind of emergency light circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520312394.4U CN204559984U (en) | 2015-05-08 | 2015-05-08 | A kind of emergency light circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204559984U true CN204559984U (en) | 2015-08-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520312394.4U Expired - Fee Related CN204559984U (en) | 2015-05-08 | 2015-05-08 | A kind of emergency light circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204559984U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342666A (en) * | 2020-02-27 | 2020-06-26 | 西安微电子技术研究所 | Pulse trigger solid relay circuit for satellite |
-
2015
- 2015-05-08 CN CN201520312394.4U patent/CN204559984U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111342666A (en) * | 2020-02-27 | 2020-06-26 | 西安微电子技术研究所 | Pulse trigger solid relay circuit for satellite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20160508 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |