CN206061256U - A kind of AC/DC continuous firings constant-current type lighting circuit - Google Patents
A kind of AC/DC continuous firings constant-current type lighting circuit Download PDFInfo
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- CN206061256U CN206061256U CN201621093751.3U CN201621093751U CN206061256U CN 206061256 U CN206061256 U CN 206061256U CN 201621093751 U CN201621093751 U CN 201621093751U CN 206061256 U CN206061256 U CN 206061256U
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Abstract
This utility model provides a kind of AC/DC continuous firings constant-current type lighting circuit, including rechargeable battery, AC civil power incoming ends, illuminating lamp plate, controlling switch and filter circuit of pressure-stabilizing, conversion control circuit is additionally provided between filter circuit of pressure-stabilizing and rechargeable battery, constant-current circuit is provided between illuminating lamp plate and the negative pole of rechargeable battery, the constant-current circuit includes the first audion, the second audion, first resistor, second resistance, 3rd resistor, the 4th resistance and the 5th resistance.Circuit structure of the present utility model is reasonable, charge in AC, illuminating lamp plate can also constant current-supplying light, and in AC undertensions, can change carries out constant current-supplying to rechargeable battery and lights, solve the technical deficiency that lighting in conventional art will not be lighted when AC charges, stability in use is good and strong applicability.
Description
Technical field
This utility model belongs to lighting circuit technical field, more specifically, is to be related to a kind of AC DC continuous firing constant currents
Type lighting circuit.
Background technology
Portable illumination equipment is widely used in the middle of our daily life, but a big chunk equipment is for safety
See, when AC charges, light fixture will not be lighted, this to a certain degree on limit the convenience that we use；How this is released
Limiting enables light fixture to automatically switch between AC and DC simultaneously, and the brightness of two kinds of power supply mode illuminations keeps one substantially
Cause, this just proposes a great challenge to design.
Utility model content
This utility model is to provide that a kind of stability in use is good and the AC DC continuous firing constant current powers for illumination of strong applicability
Road, it is intended to solve the technical deficiency that lighting in conventional art will not be lighted when AC charges.
This utility model provides a kind of AC/DC continuous firings constant current lighting circuit, including rechargeable battery, AC cities are electrically accessed
End, illuminating lamp plate, controlling switch and filter circuit of pressure-stabilizing, the AC civil powers incoming end are connected with the filter circuit of pressure-stabilizing,
The filter circuit of pressure-stabilizing, rechargeable battery are connected with illuminating lamp plate by controlling switch, the filter circuit of pressure-stabilizing with fill
Conversion control circuit is additionally provided between battery, constant-current circuit is provided between the illuminating lamp plate and the negative pole of rechargeable battery,
The constant-current circuit includes the first audion, the second audion, first resistor, second resistance, 3rd resistor, the 4th resistance and
Five resistance, the base stage of first audion are just being connected to illuminating lamp plate after the 4th resistance, the 5th resistance series circuit
Extremely go up, the colelctor electrode of first audion is connected on the negative pole of illuminating lamp plate and emitter stage is connected to the base of the second audion
Extremely go up, the colelctor electrode of second audion is connected on the positive pole of illuminating lamp plate by 3rd resistor and grounded emitter, institute
State first resistor and second resistance is connected in parallel between the base stage and ground wire of the second audion.
Further, the conversion control circuit includes the 3rd audion, the 4th audion, the 5th audion, the six or three pole
Pipe, the 7th audion, the 8th audion, the first unilateral diode, the second unilateral diode, the 3rd unilateral diode, the 4th list
To diode, the 5th unilateral diode, the 6th unilateral diode, the first Zener diode, the second Zener diode, the 6th electric
Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the tenth
Four resistance, the 15th resistance and the 16th resistance, the base stage of the 3rd audion pass through the 6th resistance and the first unidirectional two pole
The negative pole of pipe is connected and the positive pole of the first unilateral diode is connected with the positive pole of filter circuit of pressure-stabilizing, the 3rd audion
Grounded emitter, the 7th resistance is connected between the base stage and ground wire of the 3rd audion, the collection of the 3rd audion
Electrode be connected with the negative pole of the second unilateral diode by the 8th resistance and second unilateral diode positive pole and voltage stabilizing
The positive pole of filter circuit is connected, and the base stage of the 4th audion is connected with the base stage of the 3rd audion, and the described 4th 3
The colelctor electrode of the grounded emitter of pole pipe and the 4th audion is connected with the base stage of the 5th audion by the 9th resistance,
The emitter stage of the 5th audion is connected with the positive pole of filter circuit of pressure-stabilizing, colelctor electrode and the control of the 5th audion
The pin of switch is connected, and the tenth resistance is connected between the base stage and emitter stage of the 5th audion, the six or three pole
The colelctor electrode of pipe is connected with the positive pole of filter circuit of pressure-stabilizing by the 11st resistance, the base stage and the 3rd of the 6th audion
The positive pole of unilateral diode be connected and the 3rd unilateral diode negative pole by the first Zener diode earth lead, the described tenth
Two resistance are connected in the base stage of the 6th audion and the positive pole of filter circuit of pressure-stabilizing, the emitter stage connection of the 6th audion
Between controlling switch and the positive pole of rechargeable battery, the base stage of the 7th audion is connected with the colelctor electrode of the 3rd audion
Connect, the colelctor electrode of the grounded emitter line and the 7th audion of the 7th audion passes through the 13rd resistance and the 14th
It is connected to after resistance series circuit on the pin of controlling switch, the base stage of the 7th audion passes through the 15th resistance and the tenth
Earth lead after six resistance series circuits, the emitter stage of the 8th audion are connected to controlling switch and the 14th ohmic connection points
On, the base stage of the 8th audion is connected on the junction point of the 13rd resistance and the 14th resistance, the collection of the 8th audion
Electrode is connected with the positive pole of the 4th unilateral diode and the negative pole of the 4th unilateral diode is connected after the second Zener diode
It is connected on the junction point of the 15th resistance and the 16th resistance, the colelctor electrode of the 8th audion passes through the 5th unilateral diode
It is connected with the positive pole of illuminating lamp plate, one end of the 3rd resistor is connected between the 5th unilateral diode and illuminating lamp plate,
The pin of the controlling switch is connected with the positive pole of illuminating lamp plate by the 6th unilateral diode and one end of the 5th resistance connects
It is connected between the 6th unilateral diode and illuminating lamp plate, when the controlling switch is closed, the emitter stage of the 8th audion
It is connected with the positive pole of rechargeable battery by controlling switch, the positive pole of the 5th unilateral diode passes through controlling switch and the 5th
The colelctor electrode of audion is connected.
Further preferably, first audion, the second audion, the 3rd audion, the 4th audion, the six or three pole
Pipe, the 7th audion and the 8th audion are NPN type triode, and the 5th audion is PNP type triode.
It is additionally provided with the indicator light circuit being in parallel with filter circuit of pressure-stabilizing.
This utility model is provided the advantage that：Circuit structure of the present utility model rationally, charges in AC, illuminating lamp
Plate can also constant current-supplying light, and in AC undertensions, can change carries out constant current-supplying to rechargeable battery and lights, and solves
The technical deficiency that lighting in conventional art of having determined will not be lighted when AC charges, stability in use is good and strong applicability.
Description of the drawings
The electrical block diagram that Fig. 1 is provided for this utility model embodiment.
Specific embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, are further elaborated to this utility model.It should be appreciated that concrete reality described herein
Example is applied only to explain this utility model, be not used to limit this utility model.
Please also refer to Fig. 1, for a kind of AC/DC continuous firings constant current power for illumination that this utility model preferred embodiment is provided
Road, including rechargeable battery 1, AC civil powers incoming end 2, illuminating lamp plate 3, controlling switch SW and filter circuit of pressure-stabilizing 4, the AC civil powers
Incoming end 2 is connected with the filter circuit of pressure-stabilizing 4, the filter circuit of pressure-stabilizing 4, rechargeable battery 1 by controlling switch SW with
Illuminating lamp plate 3 is connected, and is additionally provided with conversion control circuit 5, described between the filter circuit of pressure-stabilizing 4 and rechargeable battery 1
Be provided with constant-current circuit 6 between the negative pole of illuminating lamp plate 3 and rechargeable battery 1, the constant-current circuit 6 include the first audion Q1,
Two audion Q2, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and the 5th resistance R5, the described 1st
The base stage of pole pipe Q1 is connected on the positive pole of illuminating lamp plate 3 after the 4th resistance R4, the 5th resistance R5 series circuits, and described
The colelctor electrode of one audion Q1 is connected on the negative pole of illuminating lamp plate 3 and emitter stage is connected in the base stage of the second audion Q2,
The colelctor electrode of the second audion Q2 is connected on the positive pole of illuminating lamp plate 3 by 3rd resistor R3 and grounded emitter, institute
State first resistor R1 and second resistance R2 is connected in parallel between the base stage and ground wire of the second audion Q2.
Further, the conversion control circuit 5 include the 3rd audion Q3, the 4th audion Q4, the 5th audion Q5,
Six audion Q6, the 7th audion Q7, the 8th audion Q8, the first unilateral diode D1, the second unilateral diode D2, the 3rd list
To diode D3, the 4th unilateral diode D4, the 5th unilateral diode D5, the 6th unilateral diode D6, the first Zener diode
DZ1, the second Zener diode DZ2, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance
R10, the 11st resistance R11, the 12nd resistance R12, the 13rd resistance R13, the 14th resistance R14, the 15th resistance R15 and
16 resistance R16, the base stage of the 3rd audion Q3 are connected with the negative pole of the first unilateral diode D1 by the 6th resistance R6
Connect and the positive pole of the first unilateral diode D1 is connected with the positive pole of filter circuit of pressure-stabilizing 4, the transmitting of the 3rd audion Q3
Pole is grounded, and the 7th resistance R7 is connected between the base stage and ground wire of the 3rd audion Q3, the collection of the 3rd audion Q3
Electrode be connected with the negative pole of the second unilateral diode D2 by the 8th resistance R8 and the second unilateral diode D2 positive pole
It is connected with the positive pole of filter circuit of pressure-stabilizing 4, the base stage of the 4th audion Q4 is connected with the base stage of the 3rd audion Q3,
The grounded emitter of the 4th audion Q4 and the colelctor electrode of the 4th audion Q4 pass through the 9th resistance R9 and the five or three
The base stage of pole pipe Q5 is connected, and the emitter stage of the 5th audion Q5 is connected with the positive pole of filter circuit of pressure-stabilizing 4, and described
The colelctor electrode of five audion Q5 is connected with the pin of controlling switch, and the tenth resistance R10 is connected to the 5th audion Q5's
Between base stage and emitter stage, the colelctor electrode of the 6th audion Q6 with filter circuit of pressure-stabilizing 4 just passes through the 11st resistance R11
Pole is connected, and the base stage of the 6th audion Q6 is connected with the positive pole of the 3rd unilateral diode D3 and the 3rd unilateral diode
The negative pole of D3 is connected to the base stage of the 6th audion Q6 by the first Zener diode DZ1 earth leads, the 12nd resistance R12
On the positive pole of filter circuit of pressure-stabilizing 4, the emitter stage of the 6th audion Q6 with rechargeable battery is just connected to controlling switch
Between pole, the base stage of the 7th audion Q7 is connected with the colelctor electrode of the 3rd audion Q3, the 7th audion Q7's
The colelctor electrode of grounded emitter line and the 7th audion Q7 passes through the 13rd resistance R13 and the 14th resistance R14 series electricals
It is connected to behind road on the pin of controlling switch SW, the base stage of the 7th audion Q7 passes through the 15th resistance R15 and the 16th
Earth lead after resistance R16 series circuits, the emitter stage of the 8th audion Q8 are connected to controlling switch and the 14th resistance R14
On junction point, the base stage of the 8th audion Q8 is connected on the junction point of the 13rd resistance R13 and the 14th resistance R14, described
The colelctor electrode of the 8th audion Q8 is connected with the positive pole of the 4th unilateral diode D4 and the negative pole of the 4th unilateral diode D4 leads to
It is connected to after crossing the second Zener diode DZ2 on the junction point of the 15th resistance R15 and the 16th resistance R16, the described 8th 3
The colelctor electrode of pole pipe Q8 is connected with the positive pole of illuminating lamp plate 3 by the 5th unilateral diode D5, and the one of 3rd resistor R3
End is connected between the 5th unilateral diode D5 and illuminating lamp plate 3, and the pin of controlling switch SW passes through the 6th unidirectional two pole
Pipe D6 is connected with the positive pole of illuminating lamp plate 3 and one end of the 5th resistance R5 is connected to the 6th unilateral diode D6 and illuminating lamp plate
Between 3, when controlling switch SW is closed, the emitter stage of the 8th audion Q8 passes through controlling switch SW and rechargeable battery
1 positive pole is connected, and the positive pole of the 5th unilateral diode D5 passes through the colelctor electrode phase of controlling switch and the 5th audion Q5
Connection.
Further preferably, the first audion Q1, the second audion Q2, the 3rd audion Q3, the 4th audion Q4,
Six audion Q6, the 7th audion Q7 and the 8th audion Q8 are NPN type triode, and the 5th audion Q5 is positive-negative-positive
Audion.
It is additionally provided with the indicator light circuit 7 being in parallel with filter circuit of pressure-stabilizing.
Its operation principle is summarized as follows：AC civil powers by filter circuit of pressure-stabilizing, are provided for circuit Jing after transformator TR1 blood pressure lowerings
DC source, is charged to battery BT while being power supply.When SW is switched in ON states, if now circuit does not have
AC electricity inputs, battery BT are powered to lighting lamp group LED1-LED2 by audion Q8.Lamp plate electric current flow through audion Q2 and
Resistance R1, R2, finally to battery cathode；When lamp plate electric current is more than setting value, Q1 base stages have enough bias voltages and turn on,
The electric current of lamp plate so as to reduce Q2 base currents, is effectively limited, is finally made lamp plate electric current maintain the value of setting, is reached constant current work
The purpose of work.
When connecting AC and being electric, and AC TV universities, in setting value, the voltage that resistance R7 divides enough makes Q3 and Q4 conductings, now
Q7 ends, Q5 conductings；AC civil powers Jing Q5, D6 Jing after step-down rectifier filtering, power to lamp plate, and lamp plate constant current is lighted.Due to now
Q7 ends, and Q8 does not have base current path, and Q8 is also switched off, and battery can not be powered to lamp plate.
When AC undertensions, the partial pressure of resistance R7 is insufficient to allow Q3 and Q4 conductings, thus now Q7 is turned on, Q5 cut-offs,
AC civil powers can not be powered to lamp plate；As Q7 is turned on, Q8 base stages have current path, and Q8 conductings, battery pass through Q8 to lamp plate
It is powered.The automatic switchover free of discontinuities of AC and DC power supply modes is can be achieved with so.
Circuit structure of the present utility model rationally, charges in AC, illuminating lamp plate can also constant current-supplying light, and in AC
During undertension, can change carries out constant current-supplying to rechargeable battery and lights, and in solving conventional art, lighting is filled in AC
The technical deficiency that will not be lighted when electric, stability in use is good and strong applicability.
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (4)
1. a kind of AC/DC continuous firings constant-current type lighting circuit, including rechargeable battery, AC civil power incoming ends, illuminating lamp plate, control
Switch and filter circuit of pressure-stabilizing, the AC civil powers incoming end are connected with the filter circuit of pressure-stabilizing, the filter circuit of pressure-stabilizing,
Rechargeable battery is connected with illuminating lamp plate by controlling switch, it is characterised in that：In the filter circuit of pressure-stabilizing and rechargeable battery
Between be additionally provided with conversion control circuit, constant-current circuit, the perseverance are provided between the illuminating lamp plate and the negative pole of rechargeable battery
Current circuit includes that the first audion, the second audion, first resistor, second resistance, 3rd resistor, the 4th resistance and the 5th are electric
Resistance, the base stage of first audion are connected on the positive pole of illuminating lamp plate after the 4th resistance, the 5th resistance series circuit,
The colelctor electrode of first audion is connected on the negative pole of illuminating lamp plate and emitter stage is connected in the base stage of the second audion,
The colelctor electrode of second audion is connected on the positive pole of illuminating lamp plate by 3rd resistor and grounded emitter, and described first
Resistance and second resistance are connected in parallel between the base stage and ground wire of the second audion.
2. a kind of AC/DC continuous firings constant-current type lighting circuit according to claim 1, it is characterised in that：The conversion
Control circuit includes the 3rd audion, the 4th audion, the 5th audion, the 6th audion, the 7th audion, the eight or three pole
Pipe, the first unilateral diode, the second unilateral diode, the 3rd unilateral diode, the 4th unilateral diode, the 5th unidirectional two pole
Pipe, the 6th unilateral diode, the first Zener diode, the second Zener diode, the 6th resistance, the 7th resistance, the 8th resistance,
Nine resistance, the tenth resistance, the 11st resistance, the 12nd resistance, the 13rd resistance, the 14th resistance, the 15th resistance and the tenth
Six resistance, the base stage of the 3rd audion is connected with the negative pole of the first unilateral diode by the 6th resistance and first is unidirectional
The positive pole of diode is connected with the positive pole of filter circuit of pressure-stabilizing, the grounded emitter of the 3rd audion, and the described 7th is electric
Resistance is connected between the base stage and ground wire of the 3rd audion, and the colelctor electrode of the 3rd audion passes through the 8th resistance and the second list
It is connected to the negative pole of diode and the positive pole of the second unilateral diode is connected with the positive pole of filter circuit of pressure-stabilizing, it is described
The base stage of the 4th audion is connected with the base stage of the 3rd audion, the grounded emitter and the described 4th of the 4th audion
The colelctor electrode of audion is connected with the base stage of the 5th audion by the 9th resistance, the emitter stage of the 5th audion with it is steady
The positive pole of filter pressing wave circuit is connected, and the colelctor electrode of the 5th audion is connected with the pin of controlling switch, and the described tenth
Resistance is connected between the base stage and emitter stage of the 5th audion, the colelctor electrode of the 6th audion by the 11st resistance with
The positive pole of filter circuit of pressure-stabilizing is connected, and the base stage of the 6th audion is connected with the positive pole of the 3rd unilateral diode and
The negative pole of three unilateral diodes is connected to the base of the 6th audion by the first Zener diode earth lead, the 12nd resistance
On the positive pole of pole and filter circuit of pressure-stabilizing, the emitter stage of the 6th audion is connected to the positive pole of controlling switch and rechargeable battery
Between, the base stage of the 7th audion is connected with the colelctor electrode of the 3rd audion, and the emitter stage of the 7th audion connects
The colelctor electrode of ground wire and the 7th audion after the 13rd resistance with the 14th resistance series circuit is connected to control and opens
On the pin of pass, the base stage of the 7th audion earth lead, institute after the 15th resistance and the 16th resistance series circuit
The emitter stage for stating the 8th audion is connected on controlling switch and the 14th ohmic connection points, and the base stage of the 8th audion is connected to
On the junction point of the 13rd resistance and the 14th resistance, the positive pole of the colelctor electrode and the 4th unilateral diode of the 8th audion
It is connected and the negative pole of the 4th unilateral diode is connected to the 15th resistance and the 16th resistance after the second Zener diode
Junction point on, the colelctor electrode of the 8th audion is connected with the positive pole of illuminating lamp plate by the 5th unilateral diode, institute
The one end for stating 3rd resistor is connected between the 5th unilateral diode and illuminating lamp plate, and the pin of the controlling switch passes through the 6th
Unilateral diode is connected with the positive pole of illuminating lamp plate and one end of the 5th resistance is connected to the 6th unilateral diode and illuminating lamp
Between plate, when the controlling switch is closed, the emitter stage of the 8th audion with rechargeable battery just passes through controlling switch
Pole is connected, and the positive pole of the 5th unilateral diode is connected with the colelctor electrode of the 5th audion by controlling switch.
3. a kind of AC/DC continuous firings constant-current type lighting circuit according to claim 2, it is characterised in that：Described first
Audion, the second audion, the 3rd audion, the 4th audion, the 6th audion, the 7th audion and the 8th audion are
NPN type triode, the 5th audion are PNP type triode.
4. a kind of AC/DC continuous firings constant-current type lighting circuit according to claim 3, it is characterised in that：Be additionally provided with
The indicator light circuit that filter circuit of pressure-stabilizing is in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621093751.3U CN206061256U (en) | 2016-09-29 | 2016-09-29 | A kind of AC/DC continuous firings constant-current type lighting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621093751.3U CN206061256U (en) | 2016-09-29 | 2016-09-29 | A kind of AC/DC continuous firings constant-current type lighting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206061256U true CN206061256U (en) | 2017-03-29 |
Family
ID=58366434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621093751.3U Active CN206061256U (en) | 2016-09-29 | 2016-09-29 | A kind of AC/DC continuous firings constant-current type lighting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206061256U (en) |
-
2016
- 2016-09-29 CN CN201621093751.3U patent/CN206061256U/en active Active
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