CN205408226U - Exchange and directly drive light -operated connection in series -parallel LED lamp - Google Patents
Exchange and directly drive light -operated connection in series -parallel LED lamp Download PDFInfo
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- CN205408226U CN205408226U CN201620159704.8U CN201620159704U CN205408226U CN 205408226 U CN205408226 U CN 205408226U CN 201620159704 U CN201620159704 U CN 201620159704U CN 205408226 U CN205408226 U CN 205408226U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses an exchange and directly drive light -operated connection in series -parallel LED lamp, including the bridge rectifier who establishes ties in proper order to reach the main LED banks, feedback LED banks, a LED banks, the 2nd LED banks, the 3rd LED banks, fourth LED banks and the stationary flow control circuit that establish ties and form by a plurality of LED lamps between feedback LED banks and the 2nd LED banks be provided with a switch circuit, the fourth switch circuit of its break -make of control between the 3rd LED banks and the stationary flow control circuit respectively, be provided with the 2nd switch circuit, the 3rd switch circuit of its break -make of control between a LED banks and the fourth LED banks, a switch circuit, the 2nd switch circuit, the 3rd switch circuit, fourth switch circuit's conduction control end respectively by feedback LED banks, a LED banks, the 2nd LED banks, the 3rd LED banks feedback control voltage, a switch circuit, the 2nd switch circuit's disconnection control end is by first light -operated circuit control, the 3rd switch circuit, fourth switch circuit's disconnection control end is by the light -operated circuit control of second, the control voltage of first light -operated circuit, the light -operated circuit of second in get between a feedback LED banks and the LED banks.
Description
Technical field
This utility model relates to LED drive circuit technical field, and particularly a kind of alternating-current direct drives light-operated connection in series-parallel LED.
Background technology
Drive now LED scheme to have constant current power drives and exchange driving 2 kinds, constant current source drive scheme is to utilize through over commutation and boost chopper, the 220V alternating current of input is become high frequency voltage, then through transformer pressure-reducing rectifying and wave-filtering, become low-voltage dc voltage to power to LED, the shortcoming circuit of this scheme is complicated, wastes substantial amounts of copper material and artificial, owing to adopting electrochemical capacitor to cause the life-span short, during low temperature, the electrolyte of electrochemical capacitor can freeze, and causes that power supply does not work.Existing exchange directly drives LED circuit, also has very big problem, it is simply that Linear Driving LED, it is to cause semiconductor element and LED seriously to generate heat when supply voltage is too high, and cause whole LED line road power consumption to strengthen, and the serious step-down of energy conversion efficiency, cause that LED light declines to strengthen and even burn LED.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, it is provided that a kind of alternating-current direct drives light-operated connection in series-parallel LED.
For solving above-mentioned technical problem, technical solution adopted in the utility model is: a kind of alternating-current direct drives light-operated connection in series-parallel LED, including the bridge rectifier being sequentially connected in series, and the main LED group being in series by some LED, feedback LED group, the first LED group, the second LED group, the 3rd LED group, the 4th LED group and current stabilization control circuit, between described feedback LED group and the second LED group, between described 3rd LED group and current stabilization control circuit, it is respectively arranged with control the first on-off circuit of its break-make, the 4th on-off circuit；Control the second switch circuit of its break-make, the 3rd on-off circuit it is provided with between described first LED group and the 4th LED group；Described first on-off circuit, second switch circuit, the 3rd on-off circuit, the 4th on-off circuit conducting control end respectively by described feedback LED group, the first LED group, the second LED group, the 3rd LED group feedback control voltage；Described first on-off circuit, second switch circuit disconnection control end controlled by the first light-operated circuit, described 3rd on-off circuit, the 4th on-off circuit disconnection control end controlled by the second light-operated circuit, described first light-operated circuit, the second light-operated circuit the power taking between described feedback LED group and the first LED group of control voltage.
In technique scheme, described first LED group, the second LED group, the 3rd LED group all comprise described feedback LED group, and the conducting that this feedback LED group is described second switch circuit, the 3rd on-off circuit, the 4th on-off circuit controls end offer control voltage.
In technique scheme, described first on-off circuit, second switch circuit, the 3rd on-off circuit, the 4th on-off circuit respectively field effect transistor Q1, Q2, Q3, Q4, described field effect transistor Q1, Q2, Q3, Q4 source electrode and grid between in parallel with described feedback LED group respectively, described field effect transistor Q1, Q2 drain electrode and grid between be connected between drain electrode and the grid of Zener diode ZD1, described field effect transistor Q3, Q4 and be connected to Zener diode ZD2.
In technique scheme, described first light-operated circuit includes power taking branch road, comparator IC1, the first photoelectrical coupler U1 and the second photoelectrical coupler U2, the comparator IC1 voltage according to power taking branch road, control the first photoelectrical coupler U1 and the break-make of the second photoelectrical coupler U2, described first photoelectrical coupler U1 controls the control voltage controlling end that disconnects of described first on-off circuit, and the disconnection of the described second photoelectrical coupler U2 described second switch circuit of control controls the control voltage of end.
In technique scheme, described second light-operated circuit includes power taking branch road, comparator IC2, the 3rd photoelectrical coupler U3 and the four photoelectrical coupler U4, the comparator IC2 voltage according to power taking branch road, control the break-make of the 3rd photoelectrical coupler U3 and the four photoelectrical coupler U4, described 3rd photoelectrical coupler U3 controls the control voltage controlling end that disconnects of described 3rd on-off circuit, and the disconnection of described 4th photoelectrical coupler U4 described 4th on-off circuit of control controls the control voltage of end.
In technique scheme, described current stabilization control circuit includes feedback resistance, the first dividing potential drop branch road, the second dividing potential drop branch road and the 3rd dividing potential drop branch road, described second dividing potential drop branch road and the 3rd dividing potential drop branch road are disposed with the first partial pressure switch controlling the second dividing potential drop branch road break-make respectively and control the second partial pressure switch of the 3rd dividing potential drop branch road break-make, the control end of the first partial pressure switch is provided by the first dividing potential drop branch road and controls voltage, and the end that controls of the second partial pressure switch is provided control voltage by the outfan of the first partial pressure switch.
In technique scheme, described first partial pressure switch includes audion Q7, and the voltage between its base stage and emitter stage is taken from described feedback resistance, and its collector voltage is output in the control end of described second partial pressure switch.
In technique scheme, described second partial pressure switch includes field effect transistor Q5, Q6.
In technique scheme, described main LED group includes 16 LED；Feedback LED group includes 2 LED；First LED group, the second LED group, the 3rd LED group, the 4th LED group include 3 LED respectively.
In technique scheme, between described bridge rectifier and power supply, it is provided with electric fuse F1.
The beneficial effects of the utility model are: utilize the running voltage of LED itself come balanced input voltages too high and too low time bring and do not work or burn LED phenomenon, namely utilize the series connection of LED and the wild effect being automatically adjusted input voltage in parallel；It is partly used in parallel particularly as being that LED has when electrical network input voltage is too low, when line voltage is too high, LED automatically switches to series circuit use, thus perfection solves the problem that LED operation is brought by line voltage, with this, the function that input power is automatically adjusted, ensures that input power does not change with input voltage.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present utility model；
Fig. 2 is electrical block diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
As shown in Figure 1, a kind of alternating-current direct drives light-operated connection in series-parallel LED, including the bridge rectifier being sequentially connected in series, and the main LED group being in series by some LED, feedback LED group, the first LED group, the second LED group, the 3rd LED group, the 4th LED group and current stabilization control circuit, between described feedback LED group and the second LED group, between described 3rd LED group and current stabilization control circuit, it is respectively arranged with control the first on-off circuit of its break-make, the 4th on-off circuit；Control the second switch circuit of its break-make, the 3rd on-off circuit it is provided with between described first LED group and the 4th LED group；Described first on-off circuit, second switch circuit, the 3rd on-off circuit, the 4th on-off circuit conducting control end respectively by described feedback LED group, the first LED group, the second LED group, the 3rd LED group feedback control voltage；Described first on-off circuit, second switch circuit disconnection control end controlled by the first light-operated circuit, described 3rd on-off circuit, the 4th on-off circuit disconnection control end controlled by the second light-operated circuit, described first light-operated circuit, the second light-operated circuit the power taking between described feedback LED group and the first LED group of control voltage.
Wherein, described first LED group, the second LED group, the 3rd LED group all comprise described feedback LED group, and the conducting that this feedback LED group is described second switch circuit, the 3rd on-off circuit, the 4th on-off circuit controls end offer control voltage.
Wherein, described first on-off circuit, second switch circuit, the 3rd on-off circuit, the 4th on-off circuit respectively field effect transistor Q1, Q2, Q3, Q4, described field effect transistor Q1, Q2, Q3, Q4 source electrode and grid between in parallel with described feedback LED group respectively, described field effect transistor Q1, Q2 drain electrode and grid between be connected between drain electrode and the grid of Zener diode ZD1, described field effect transistor Q3, Q4 and be connected to Zener diode ZD2.
Wherein, described first light-operated circuit includes power taking branch road, comparator IC1, the first photoelectrical coupler U1 and the second photoelectrical coupler U2, the comparator IC1 voltage according to power taking branch road, control the first photoelectrical coupler U1 and the break-make of the second photoelectrical coupler U2, described first photoelectrical coupler U1 controls the control voltage controlling end that disconnects of described first on-off circuit, and the disconnection of the described second photoelectrical coupler U2 described second switch circuit of control controls the control voltage of end.Power taking branch road is the branch road of R7, R8, R9 series connection.
Wherein, described second light-operated circuit includes power taking branch road, comparator IC2, the 3rd photoelectrical coupler U3 and the four photoelectrical coupler U4, the comparator IC2 voltage according to power taking branch road, control the break-make of the 3rd photoelectrical coupler U3 and the four photoelectrical coupler U4, described 3rd photoelectrical coupler U3 controls the control voltage controlling end that disconnects of described 3rd on-off circuit, and the disconnection of described 4th photoelectrical coupler U4 described 4th on-off circuit of control controls the control voltage of end.Power taking branch road is the branch road of R14, R15, R16 series connection.
Wherein, described current stabilization control circuit includes feedback resistance, the first dividing potential drop branch road, the second dividing potential drop branch road and the 3rd dividing potential drop branch road, described second dividing potential drop branch road and the 3rd dividing potential drop branch road are disposed with the first partial pressure switch controlling the second dividing potential drop branch road break-make respectively and control the second partial pressure switch of the 3rd dividing potential drop branch road break-make, the control end of the first partial pressure switch is provided by the first dividing potential drop branch road and controls voltage, and the end that controls of the second partial pressure switch is provided control voltage by the outfan of the first partial pressure switch.
Wherein, described first partial pressure switch includes audion Q7, and the voltage between its base stage and emitter stage is taken from described feedback resistance, and its collector voltage is output in the control end of described second partial pressure switch.
Wherein, described second partial pressure switch includes field effect transistor Q5, Q6.
Wherein, described main LED group includes 16 LED (LED1-LED16)；Feedback LED group includes 2 LED (LED17-LED18)；First LED group (LED19-LED21), the second LED group (LED22-LED24), the 3rd LED group (LED25-LED27), the 4th LED group (LED28-LED30) include 3 LED respectively.
Wherein, electric fuse F1 it is provided with between described bridge rectifier and power supply.
As in figure 2 it is shown, a kind of alternating-current direct drives light-operated connection in series-parallel LED, its element connects as follows:
nullCapable AC L end is connected to the 2nd foot of bridge rectifier D B1 after entering electric fuse F1，Capable AC N end is directly connected to the 3rd foot of bridge rectifier D B1，1st foot of bridge rectifier D B1 is connected with LED1 and Rh1，Rh1 and Rh2 and Rh3 connects，2nd foot and the R19 of Rh3、R22 and Rj1 is connected，1st foot of R19 is connected with R20 and R21，The 1st foot ground connection of R20，2nd foot of field effect transistor Q6 is connected with R22 and field effect transistor Q6，3rd foot of field effect transistor Q6 is connected with R23，The 1st foot ground connection of R23，3rd foot of field effect transistor Q6 is connected with Rn1，The 1st foot ground connection of Rn1，2nd foot of field effect transistor Q6 is connected with Q5，1st foot of field effect transistor Q5 is connected with Rj1 and Rj2，2nd foot and the Rj2 of field effect transistor Q5、U4、ZD4、Field effect transistor Q4 and LED30 is connected.
nullLED1、LED2、LED3、LED4、LED5、LED6、LED7、LED8、LED9、LED10、LED11、LED12、LED13、LED14、LED15 and LED16 connects in order，LED16 and LED17 and R1 is connected，LED17 and LED18 is connected，LED18 and LED19、Field effect transistor Q1、R5、R7、R12 and R14 is connected,1st foot of R1 and field effect transistor Q1、Zener diode ZD1 and U1 is connected,R5 and R6 is connected，1st foot of R6 and Zener diode ZD5、R11 and U1 is connected，The 2nd foot ground connection of Zener diode ZD5，2nd foot of U1 is connected with U2，R7 and R8 is connected，1st foot and the R9 of R8、C1 and comparator IC1 is connected，The 1st foot ground connection of R9，The 2nd foot ground connection of comparator IC1，C1 and R10 is connected，1st foot of R10 and comparator IC1、R11 and U2 is connected，3rd foot of field effect transistor Q1 and Zener diode ZD1、U1、Diode D1 and LED22 is connected，The negative pole of LED19 is connected with LED20 and R2，LED20 and LED21 is connected，The negative pole of LED21 is connected with D1 and field effect transistor Q2，1st foot and the R2 of field effect transistor Q2、Zener diode ZD2 and U2 is connected，3rd foot of field effect transistor Q2 and Zener diode ZD2、LED24、LED25、U2 and field effect transistor Q3 is connected，The negative pole of LED22 is connected with LED23 and R3，LED23 and LED24 is connected，1st foot of R3 and field effect transistor Q3、Zener diode ZD3 and U3 is connected，3rd foot of field effect transistor Q3 and Zener diode ZD3、Diode D2、LED28 and U3 is connected，The negative pole of LED25 is connected with LED26 and R4，LED26 and LED27 is connected，The negative pole of LED27 is connected with D2 and field effect transistor Q4，1st foot and the R4 of field effect transistor Q4、Zener diode ZD4 and U4 is connected，LED28、LED29 and LED30 connects in order，R12 and R13 is connected，2nd foot of R13 and Zener diode ZD6、R18 and U3 is connected，The 2nd foot ground connection of Zener diode ZD6，2nd foot of U3 is connected with U4，R14 and R15 is connected，1st foot and the C2 of R15、R16 and comparator IC2 is connected，C2 and R17 is connected，1st foot of R17 and comparator IC2、R18 and U4 is connected，The 2nd foot ground connection of comparator IC2.
Operation principle of the present utility model: electric network source 220V alternating voltage is powered to bridge rectifier by electric fuse F1, grid ac voltage is converted to DC voltage by bridge rectifier D B1A, that is 50HZ alternating current is changed into the only positive half-wave voltage of 100HZ and powers to LED by bridge rectifier, this is the peak value of positive half-wave voltage is 220*1.414=311V, always have 30 LEDs (LED1-LED30), every LEDs running voltage is 9V, when all LED use for series connection, 30 are multiplied by 9 equal to 270V, and namely 30 LEDs can the DC voltage of resistance to 270V.Because bridge rectifier out be half-wave DC voltage, each half wave cycles is 25ms, in this 25ms, voltage climbs crest voltage from 0,0 is dropped to again from crest voltage, it it is a just profound ripple, 30 LEDs have 18 LED(LED1-LED18) it is not affected by controlling, there is 12 LEDs (LED19-LED30) point 2 groups composition connection in series-parallel LED, often group connection in series-parallel LED controls 6 LEDs, that is often group connection in series-parallel LED can form 3 strings 2 also, 6 strings can be formed again, the height automatic switchover connection in series-parallel according to voltage.
Half-wave voltage from 0 start to climb time, when voltage climbs more than 216V, namely the running voltage more than 24 LED is 24*9V=216V, LED starts working luminescence, at this moment field effect transistor Q1 and Q2 and Q3 and Q4 is in the conduction state, because the grid voltage of Q1 and Q2 and Q3 and Q4 takes from front 2 grades of LED, each LED operation voltage is 9V, at this moment Q1 and Q2 and Q3 and Q4 grid voltage are about 18V, so Q1 and Q2 and Q3 and Q4 simultaneously turns on, simultaneously by LED strip parallel circuit composition parallel circuit 2 groups controlled；Namely LED19 and LED20 and LED21 and LED22 and LED23 and LED24 becomes 3 strings 2 also, and running voltage is equivalent to 3 LEDs；In like manner LED25 and LED26 and LED27 and LED28 and LED29 and LED30 be also 3 strings 2 also, running voltage is equivalent to 3 LEDs；Wherein diode D1 and D2 plays connection in series-parallel guiding or iris action, and whole LED is equivalent to 24 string-like states (being equivalent to 24 LEDs running voltages).
nullWhen half-wave voltage climbs 254V，At this time+VCB voltage is 254-162V(18 LEDs * 9V)=92V，Now IC1(TL431 precision comparator，Relatively voltage is 2.5V) input 1 foot voltage be that R9*91/ (R9+R7+R8)=6.2K*92/ (6.2K+110K+110K) is more than 2.5V，IC1 begins to turn on，3 feet of IC1 are equivalent to short circuit to 1 foot，Make the lumination of light emitting diode of the input circuit of photoelectrical coupler BL817B (U1 and U2)，Photoelectrical coupler output photoelectric pipe is turned on,Because only having about 0.1V pressure drop during photocell conducting，Be equivalent to short circuit between field effect transistor Q1 and Q2 grid and drain electrode simultaneously，Q1 and Q2 is ended simultaneously，Q1 and Q2 is equivalent to open circuit，At this moment LED19 and LED20 and LED21 and LED22 and LED23 and LED24 is become 6 series circuits from 3 strings 2 circuit，The LED in whole loop is equivalent to 27 strings.
When voltage continues to climb more than 282V, the 1 foot input voltage of IC2 compares voltage 2.5V more than inside accurate voltage comparator TL431, because the 1 foot voltage of IC2 now is: R16*282V/ (R16+R14+R15)=4.7K*282V/ (4.7K+110K+110K) is more than 2.5V, so IC2 conducting, the input LEDs ON of photoelectrical coupler U3 and U4 is luminous, make the photocell conducting of correspondence, now the grid of field effect transistor Q3 and Q4 is equivalent to short circuit between drain electrode, Q3 and Q4 is ended, LED25 and LED26 and LED27 and LED28 and LED29 and LED30 is from 3 strings 2 and becomes 6 strings, whole LED loop becomes 30 strings.
When voltage continues to climb, the LED in whole loop maintains 30 series connection, when the voltage summit voltage 311V that climbs begins to decline.
In like manner, when voltage descends below 282V, during due to input 1 foot of IC2 lower than 2.5V, IC2 becomes cut-off, Q3 and Q4 becomes conducting, and LED25 and LED26 and LED27 and LED28 and LED29 and LED30 is become 3 strings 2 also from 6 strings, and whole loop returns to 27 LEDs series connection.
When voltage continues to descend below 254V, the 1 foot voltage of IC1 is lower than 2.5V, and in like manner LED19 and LED20 and LED21 and LED22 and LED23 and LED24 is become 3 strings 2 also from 6 strings.
When voltage drops to 0, second period and later each half wave cycle voltage continue to go round and begin again and recur the situation of first half-wave voltage.
This circuit utilizes LED strip parallel connection to reach to utilize the running voltage of LED itself automatically to adapt to when different voltage cleverly.nullIt not constant in 220V alternating current due to line voltage，When line voltage is higher than 220V alternating voltage，This circuit utilizes Q5 and Q6 to resist voltage and raises the LED current brought and become big，Principle is: when voltage climbs more than 270V，Namely during the LED operation voltage of 30，Field effect transistor Q1 and Q2 is begun to change into high-impedance state by conducting state，Specific works principle is when voltage is low，By adjusting resistance Rh1 and Rh2 and Rh3 and R19 and R20 dividing potential drop，Audion Q7 ends，Q7 colelctor electrode output HIGH voltage makes field effect transistor Q5 and Q6 turn on，When voltage climbs more than 270V，Q7 initially enters magnifying state，It is gradually turned on，Q7 collector voltage declines，Make field effect transistor Q5 and Q6 grid voltage step-down，Make field effect transistor electric conduction resistive big，Between field effect transistor drain-source, voltage becomes big，LED strip connection voltage is diminished，The electric current making loop LED diminishes，Thus protecting LED will not burn because voltage increases，Wherein resistance Rn1 is Current Negative Three-Point Capacitance resistance，Become big when flowing through the ohmically electric current of Rn1，Rn1 both end voltage uprises，Voltage between the BE of Q7 is increased，Q7 is made to turn on further，Q7 collector voltage step-down，Make field effect transistor Q5 and Q6 grid voltage step-down，Thus improving field effect transistor conducting resistance，It is that between field effect transistor drain-source, voltage uprises，LED loop current is diminished，Play constant LED current effect.Protection LED circuit electric current is not too large, plays protection LED effect.
Above embodiments simply indicates that rather than limits this utility model, therefore all equivalences done according to the method described in this utility model patent claim change or modify, and are all included in this utility model patent claim.
Claims (10)
1. an alternating-current direct drives light-operated connection in series-parallel LED, it is characterized in that: include the bridge rectifier being sequentially connected in series, and the main LED group being in series by some LED, feedback LED group, the first LED group, the second LED group, the 3rd LED group, the 4th LED group and current stabilization control circuit, between described feedback LED group and the second LED group, between described 3rd LED group and current stabilization control circuit, it is respectively arranged with control the first on-off circuit of its break-make, the 4th on-off circuit；Control the second switch circuit of its break-make, the 3rd on-off circuit it is provided with between described first LED group and the 4th LED group；Described first on-off circuit, second switch circuit, the 3rd on-off circuit, the 4th on-off circuit conducting control end respectively by described feedback LED group, the first LED group, the second LED group, the 3rd LED group feedback control voltage；Described first on-off circuit, second switch circuit disconnection control end controlled by the first light-operated circuit, described 3rd on-off circuit, the 4th on-off circuit disconnection control end controlled by the second light-operated circuit, described first light-operated circuit, the second light-operated circuit the power taking between described feedback LED group and the first LED group of control voltage.
2. a kind of alternating-current direct according to claim 1 drives light-operated connection in series-parallel LED, it is characterized in that: described first LED group, the second LED group, the 3rd LED group all comprise described feedback LED group, and the conducting that this feedback LED group is described second switch circuit, the 3rd on-off circuit, the 4th on-off circuit controls end offer control voltage.
3. a kind of alternating-current direct according to claim 2 drives light-operated connection in series-parallel LED, it is characterized in that: described first on-off circuit, second switch circuit, the 3rd on-off circuit, the 4th on-off circuit respectively field effect transistor Q1, Q2, Q3, Q4, described field effect transistor Q1, Q2, Q3, Q4 source electrode and grid between in parallel with described feedback LED group respectively, described field effect transistor Q1, Q2 drain electrode and grid between be connected between drain electrode and the grid of Zener diode ZD1, described field effect transistor Q3, Q4 and be connected to Zener diode ZD2.
4. a kind of alternating-current direct according to claim 1 drives light-operated connection in series-parallel LED, it is characterized in that: described first light-operated circuit includes power taking branch road, comparator IC1, the first photoelectrical coupler U1 and the second photoelectrical coupler U2, the comparator IC1 voltage according to power taking branch road, control the first photoelectrical coupler U1 and the break-make of the second photoelectrical coupler U2, described first photoelectrical coupler U1 controls the control voltage controlling end that disconnects of described first on-off circuit, and the disconnection of the described second photoelectrical coupler U2 described second switch circuit of control controls the control voltage of end.
5. a kind of alternating-current direct according to claim 1 drives light-operated connection in series-parallel LED, it is characterized in that: described second light-operated circuit includes power taking branch road, comparator IC2, the 3rd photoelectrical coupler U3 and the four photoelectrical coupler U4, the comparator IC2 voltage according to power taking branch road, control the break-make of the 3rd photoelectrical coupler U3 and the four photoelectrical coupler U4, described 3rd photoelectrical coupler U3 controls the control voltage controlling end that disconnects of described 3rd on-off circuit, and the disconnection of described 4th photoelectrical coupler U4 described 4th on-off circuit of control controls the control voltage of end.
6. a kind of alternating-current direct according to claim 1 drives light-operated connection in series-parallel LED, it is characterized in that: described current stabilization control circuit includes feedback resistance, first dividing potential drop branch road, second dividing potential drop branch road and the 3rd dividing potential drop branch road, described second dividing potential drop branch road and the 3rd dividing potential drop branch road are disposed with the first partial pressure switch controlling the second dividing potential drop branch road break-make respectively and control the second partial pressure switch of the 3rd dividing potential drop branch road break-make, the control end of the first partial pressure switch is provided by the first dividing potential drop branch road and controls voltage, the end that controls of the second partial pressure switch is provided control voltage by the outfan of the first partial pressure switch.
7. a kind of alternating-current direct according to claim 6 drives light-operated connection in series-parallel LED, it is characterized in that: described first partial pressure switch includes audion Q7, voltage between its base stage and emitter stage is taken from described feedback resistance, and its collector voltage is output in the control end of described second partial pressure switch.
8. a kind of alternating-current direct according to claim 6 or 7 drives light-operated connection in series-parallel LED, it is characterised in that: described second partial pressure switch includes field effect transistor Q5, Q6.
9. a kind of alternating-current direct according to claim 1 drives light-operated connection in series-parallel LED, it is characterised in that: described main LED group includes 16 LED；Feedback LED group includes 2 LED；First LED group, the second LED group, the 3rd LED group, the 4th LED group include 3 LED respectively.
10. a kind of alternating-current direct according to claim 1 drives light-operated connection in series-parallel LED, it is characterised in that: it is provided with electric fuse F1 between described bridge rectifier and power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159704.8U CN205408226U (en) | 2016-03-03 | 2016-03-03 | Exchange and directly drive light -operated connection in series -parallel LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620159704.8U CN205408226U (en) | 2016-03-03 | 2016-03-03 | Exchange and directly drive light -operated connection in series -parallel LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205408226U true CN205408226U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620159704.8U Active CN205408226U (en) | 2016-03-03 | 2016-03-03 | Exchange and directly drive light -operated connection in series -parallel LED lamp |
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| Country | Link |
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| CN (1) | CN205408226U (en) |
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2016
- 2016-03-03 CN CN201620159704.8U patent/CN205408226U/en active Active
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