CN102946678A - Pulse-type driving power supply for thunder-resisting temperature-controlling light-dimming LED (Light Emitting Diode) lamp - Google Patents
Pulse-type driving power supply for thunder-resisting temperature-controlling light-dimming LED (Light Emitting Diode) lamp Download PDFInfo
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Abstract
The invention relates to a thunder-resisting temperature-controlling light-dimming LED (Light Emitting Diode) lamp which comprises three parts, namely a thunder-resisting rectifying circuit (100), a pulse generation circuit (200) and an LED assembly (300), wherein the thunder-resisting rectifying circuit (100) is a four-port network which is provided with a first input end (N1), a second input end (N2), a first output end (T1) and a second output end (T2); an AC (Alternate Current) voltage is accessed between the first input end (N1) and second input end (N2) of the thunder-resisting rectifying circuit (100); one end of the pulse generation circuit (200) is connected with the first output end (T1) of the thunder-resisting rectifying circuit (100), and the other end of the pulse generation circuit (200) is connected with the positive end of the LED assembly (300); and the second output end (T2) of the thunder-resisting rectifying circuit (100) and the negative end of the LED assembly (300) are both connected with an earth circuit (E).
Description
Technical field
The present invention relates to LED lamp field, relate in particular to a kind of LED lamp pulse formula driving power that has holding concurrently of anti-lightning, A.T.C, three kinds of functions of light modulation concurrently can the light modulation of anti-thunder temperature control.
Background technology
Energy-saving and environmental protection, long-life, response are fast because having for the LED lamp, rich color, the serial advantage such as controlled, and regarded as by people: promoting the LED lamp, is that the best of light fixture economize on electricity consumption reduction realizes approach.Japan estimates: if with the LED lamp substitute Japan half incandescent lamp and fluorescent lamp, then equivalent every year be that Japan saves 6,000,000,000 liters of crude oil! Someone in addition think: the LED lamp is the mankind's one of the most great inventions behind the Edison invented incandescent lamp bulb.
The driving power (this paper is called for short driving power) of lamp housing (or claim lampshade), light-emitting diode (Light Emitting Diode) assembly (this paper is called for short the LED assembly), LED assembly is that shell, LED assembly, driving power are three large component parts of LED lamp.
Driving power is the vitals of LED lamp, only has the driving power superior performance, and the LED lamp just can present economize on electricity, long-life advantage.
For driving power importance, the technical staff in electronics, the electrical apparatus industry studies, has designed multiple LED lamp driving power source.Chinese patent application number is that 201120309550.3 " a kind of LED lamp electric supply system ", application number are that 200710037934.2 " LED driving power ", application number are that 201110031371.2 " a kind of multiple constant current high-power LED driving power source " discloses separately patent applicant's achievement in research for " adjustable LED lamp power driving circuit ", the application number of 201020214658.X.
The common feature of above-mentioned public technology is: complicated, the used electronic devices and components of electronic circuit are too many.
The LED lamp only is a kind of low price light fixture that will unexpectedly strive mutually with incandescent lamp and fluorescent lamp after all, the military radar that non-value is ten million yuan.The too many LED lamp driving power source of electronic devices and components that electronic circuit is too complicated, used will be because cost is high, reliability low (used electronic devices and components are many, just mean that cost is high, reliability is low) and without practical value.
Although have the advantage that simple, the used electronic devices and components of electronic circuit are few, cost is low, also there is following shortcoming in the present LED lamp driving power source of comparatively popular " resistance-capacitance depressurization, rectifier bridge rectification, capacitor filtering " in light fixture market:
1, used the electrochemical capacitor that polarity is arranged in the electronic circuit, and electrochemical capacitor is that the life-span is far below the device of LED assembly, so the LED lamp is subject to the threat of reduction of service life because of it;
2, described above-mentioned driving power is direct current output, the LED assembly is turned off the light from turning on light to continue energising work always, causes:
(1), can not utilize the twilight sunset of " fluorescent material " in the light-emitting diode;
(2), make the temperature rise of LED lamp increase the lost of life;
3, without the function of anti-lightning, A.T.C, light modulation.
Summary of the invention
For the present situation of prior art, the present invention want Da to target be:
1, grasping the starting point of " must to letter, having simple and practical ability only and spread for a long time to smart ", application electric technology designs as far as possible simple, the used device LED driving power few, that price is tried one's best honest and clean of trying one's best of an electronic circuit;
2, the output of designed LED driving power be pulsewidth (pulse width) adjustable, have the pulsed power supplies of certain pulse duty factor (Duty Cycle), during the pulse of output high level " accounts for ", LED assembly electrified light emitting; During the pulse " sky " of output low level, LED assembly outage rest and LED lamp utilize the afterglow of " fluorescent material " in the light-emitting diode; Be that the LED assembly is the intermittently used pattern, so its temperature rise can reduce, the life-span can prolong;
3, designed LED driving power has anti-lightning, A.T.C, three kinds of functions of light modulation concurrently;
In order to reach above-mentioned target, the technical scheme of the present invention design is: a kind of hold concurrently can the light modulation of anti-thunder temperature control LED lamp pulse formula driving power, comprise fusible link FU, anti-lightning rectification circuit and pulse-generating circuit three parts, the LED assembly is its load, it is characterized in that: described anti-lightning rectification circuit is that to have two inputs be N1 and N2 end, two outputs four port networks that to be T1 hold with T2; The P1 end of the termination AC voltage of described fusible link FU, the other end is connected with described N1 end; Described N2 end is connected with the P2 end of AC voltage; One end of described pulse-generating circuit is connected with described T1 end, and the other end is connected with the anode of described LED assembly; The equal link of the negative terminal ground E of described T2 end and described LED assembly.
The P1 of described AC voltage holds, the P2 end can reciprocity.
Described anti-lightning rectification circuit is restrained diode TVS1 by the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4 and ambipolar transient voltage and is formed, and, the end that described ambipolar transient voltage is restrained diode TVS1 is connected with the input N1 of anti-lightning rectification circuit, and the other end is connected with the input N2 of anti-lightning rectification circuit; Described the first diode D1, the second diode D2 negative pole separately all are connected with the output T1 of anti-lightning rectification circuit; Described the 3rd diode D3, the 4th diode D4 positive pole separately all is connected with the output T2 of anti-lightning rectification circuit; The negative pole of the positive pole of described the first diode D1, the 3rd diode D3 all is connected with the input N1 of anti-lightning rectification circuit; The negative pole of the positive pole of described the second diode D2, the 4th diode D4 all is connected with the input N2 of anti-lightning rectification circuit.
Ambipolar transient voltage suppressor diode TVS1 is connected between described N1 end and the N2 end, and under normal circumstances, it is high impedance, and equivalence is open circuit; When the hard pulse voltage of be struck by lightning lightning or static discharge, electric fast transition arrived, its puncture was Low ESR, and equivalence is short circuit.
Described pulse-generating circuit is comprised of unidirectional thyristor SCR, potentiometer VR and semistor PTC, and one of the anode A of described unidirectional thyristor SCR, described thermistor PTC end all is connected with the output T1 of anti-lightning rectification circuit; The other end of thermistor PTC is connected with potentiometer VR, and the other end of potentiometer VR is connected with the gate pole G of described unidirectional thyristor SCR; The negative electrode K of described unidirectional thyristor SCR is connected with the anode of described LED assembly; Equivalent resistance R after described potentiometer VR and semistor PTC are in series becomes the triggering resistance R of described unidirectional thyristor SCR.
Described unidirectional thyristor SCR begins the moment of conducting
T1And angle of flow Q is determined by the resistance that its equivalence triggers resistance R: when the equivalent resistance that triggers resistance R diminishes, described
T1In advance, described angle of flow Q becomes large thereupon; Otherwise, when the resistance of equivalence triggering resistance R becomes large, described
T1Postpone, described angle of flow Q diminishes thereupon.
Described unidirectional thyristor SCR conducting the time, pulse current I0 exports high level; Described unidirectional thyristor SCR cut-off the time, pulse current I0 output low level.
Described LED assembly is carried out the intermittently used pattern, during pulse current I0 output high level, and LED assembly electrified light emitting; During pulse current I0 output low level, the afterglow of LED assembly outage heat radiation and utilization " fluorescent material ".
The long operation result of theory analysis and experimental prototype all proves, uses the present invention, can obtain following beneficial effect:
1, between two input N1 of anti-lightning rectification circuit end and N2 end, is connected to ambipolar transient voltage suppressor diode, the function that the present invention has been possessed exempt from the hard pulse of thunderbolt lightning or static discharge (ESD), electric fast transition (EFT) to damage.
2, in the triggering loop of the unidirectional thyristor SCR of pulse-generating circuit, be provided with thermistor PTC, make the present invention possess the function of the temperature of automatic control LED lamp.
3, be provided with potentiometer VR in the triggering loop of the unidirectional thyristor SCR of pulse-generating circuit, making the present invention possess the brightness of adjusting the LED lamp is the function of light modulation.
4, lengthen the life: based on following reason, the present invention has promoted the working life of LED lamp:
(1), without the electrochemical capacitor of life-span far below the LED assembly, so the LED lamp is disengaged because of the threat that it is subject to shortening working life;
(2), as previously mentioned, be provided with temperature negative feedback device thermistor PTC, can prevent that the LED light temperature is too high;
(3), as previously mentioned, have the function of anti-lightning lightning, anti-electrostatic discharging (ESD), anti-electric fast transition (EFT), can make the LED lamp exempt from the damage of above-mentioned hard pulse;
(4), the LED lamp presses intermittently used pulse mode operation, reduced temperature rise.
5, economize on electricity: the intermittently used burst operative mode is the working method of economize on electricity, and therefore the LED lamp has saved electric energy; Between two pulses, utilize the afterglow of " fluorescent material " in the light-emitting diode, make the LED lamp further save electric energy.
Description of drawings
Fig. 1 is functional-block diagram of the present invention;
Fig. 2 is the circuit theory diagrams of embodiment 1;
Fig. 3 is the oscillogram of the pulse current I0 that exports of the present invention;
Fig. 4 is the oscillogram of the output voltage U 34 of anti-lightning rectification circuit;
Fig. 5 is the oscillogram of AC voltage;
Fig. 6 is the circuit theory diagrams of embodiment 2;
Fig. 7 is the V-I characteristic curve of ambipolar transient voltage suppressor diode.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described.
Fig. 1 is functional-block diagram of the present invention, and Fig. 2 is the circuit theory diagrams of embodiment 1.Among Fig. 1: 100 is anti-lightning rectification circuit of the present invention, and 200 is pulse-generating circuit, and 300 for load of the present invention is the LED assembly, and FU is fusible link; A kind of hold concurrently can the light modulation of anti-thunder temperature control LED lamp pulse formula driving power, comprise fusible link FU, anti-lightning rectification circuit 100 and pulse-generating circuit 200 3 parts, it is characterized in that: described anti-lightning rectification circuit 100 is that N1 and N2 end, two outputs are four port networks of T1 and T2 end for having two inputs; The P1 end of the termination AC voltage of described fusible link FU, the other end is connected with described N1 end; Described N2 end is connected with the P2 end of AC voltage; One end of described pulse-generating circuit 200 is connected with described T1 end, and the other end is connected with the anode of described LED assembly 300; The equal link of the negative terminal ground E of described T2 end and described LED assembly 300.
The professional and technical personnel should be clear: the P1 of described AC voltage holds, the P2 end can reciprocity.
In conjunction with Fig. 1, Fig. 2: the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4 and ambipolar transient voltage are restrained diode (Bipolar transient voltage supression the diode) TVS1 and have jointly been formed anti-lightning rectification circuit 100; And the end that described ambipolar transient voltage is restrained diode TVS1 is connected with the input N1 of anti-lightning rectification circuit 100, and the other end is connected with the input N2 of anti-lightning rectification circuit 100; Described the first diode D1, the second diode D2 negative pole separately all are connected with the output T1 of anti-lightning rectification circuit 100; Described the 3rd diode D3, the 4th diode D4 positive pole separately all is connected with the output T2 of anti-lightning rectification circuit 100; The negative pole of the positive pole of described the first diode D1, the 3rd diode D3 all is connected with the input N1 of anti-lightning rectification circuit 100; The negative pole of the positive pole of described the second diode D2, the 4th diode D4 all is connected with the input N2 of anti-lightning rectification circuit 100.
Unidirectional thyristor
SCR(Silicon Controlled Rectifier), potentiometer VR and semistor PTC formed described pulse-generating circuit 200, and, described unidirectional thyristor
SCROne of anode A, described thermistor PTC end all be connected with the output T1 of anti-lightning rectification circuit 100; The other end of thermistor PTC is connected with potentiometer VR, the other end of potentiometer VR and described unidirectional thyristor
SCRGate pole G be connected; Described unidirectional thyristor
SCRNegative electrode K be connected with the anode of described LED assembly.
Set forth the course of work of present embodiment 1 below in conjunction with accompanying drawing:
In conjunction with Fig. 1, Fig. 2: from the mathematic(al) representation of the AC voltage of P1, P2 end input be:
u=Umsin（2πft＋φ）
In the following formula: u is the instantaneous value of AC voltage, and Um is the amplitude of AC voltage, and f is the frequency of AC voltage, and φ is the initial phase angle of AC voltage.
Be concise explanation, now suppose initial phase angle φ=0, then the expression formula of the instantaneous value u of AC voltage is:
u=Umsin2πft
Its waveform as shown in Figure 5.
Fig. 7 is the V-I characteristic curve of ambipolar transient voltage suppressor diode, and uB2 is the puncture voltage of positive direction among the figure, and uB1 is reciprocal puncture voltage.
In conjunction with Fig. 2, between two input N1 end that ambipolar transient voltage suppressor diode TVS1 is connected to described anti-lightning rectification circuit 100 and the N2 end, the clamper of voltage u strangulation in uB1～uB2 scope between its effect is equivalent to N1 end and N2 held.
Again in conjunction with Fig. 7, under normal circumstances, namely when uB1＜u＜uB2, described ambipolar transient voltage suppressor diode TVS1 is high impedance, and equivalence is open circuit;
When the hard pulse voltage of be struck by lightning lightning or static discharge (ESD), electric fast transition (EFT) arrived, described ambipolar transient voltage suppressor diode TVS1 puncture was Low ESR, and equivalence is short circuit.Therefore the device of rear class is subject to its protection, makes them exempt from thunderbolt or ESD, EFT and damages.
In sum, in brief: ambipolar transient voltage suppressor diode TVS1 is connected between described N1 end and the N2 end, and under normal circumstances, it is high impedance, and equivalence is open circuit; When the hard pulse voltage of be struck by lightning lightning or static discharge (ESD), electric fast transition (EFT) arrived, its puncture was Low ESR, and equivalence is short circuit.
Again in conjunction with Fig. 2, Fig. 5: in 0 ~ t01 time domain, AC voltage is that P1 end high level, P2 hold low level positive half cycle, at this moment, in the described anti-lightning rectification circuit 100: the first diode D1, the equal conducting of the 4th diode D4, the second diode D2, the 3rd diode D3 all end; Through 100 rectifications of anti-lightning rectification circuit, the waveform of its output voltage u34 in this 0 ~ t01 time domain is as shown in Fig. 4.
In t01 ~ t02 time domain, AC voltage is the negative half period of P1 end low level, P2 end high level, and at this moment, described the first diode D1, the 4th diode D4 all end, described the second diode D2, the equal conducting of the 3rd diode D3; Through 100 rectifications of anti-lightning rectification circuit, the waveform of its output voltage u34 in this t01 ~ t02 time domain is also shown among Fig. 4.
In conjunction with Fig. 2, in described pulse-generating circuit 200, the equivalent resistance R after potentiometer VR and semistor PTC are in series becomes the triggering resistance R of unidirectional thyristor SCR.
Again in conjunction with Fig. 3, Fig. 4, when described R value is definite value:
0～t1Time domain in, described unidirectional thyristor SCR cut-off;
T=t1The time, described unidirectional thyristor SCR begins conducting, forms the rising edge of a pulse of pulse current I0, and pulse current I0 presses P1-fusible link FU-N1-D1-SCR
-The path circulation of LED assembly 300-D4-N2-P2, described LED assembly 300 gets electroluminescence;
T1～t2Time domain in, described unidirectional thyristor
SCRContinue conducting, pulse current I0 continues circulation, and LED assembly 300 continues luminous.
The time, voltage u34 descends, and pulse current I0 also drops to less than described unidirectional thyristor thereupon
SCRThe state of " keeping electric current I H ", namely I0＜IH is described
SCRTurn-off and end, form the pulse trailing edge of pulse current I0, the 300 outage heat radiations of LED assembly also utilize the afterglow of " fluorescent material ".
T2～t3Time domain in, described unidirectional thyristor
SCRStill cut-off, the 300 continuation outage heat radiations of LED assembly and utilization "
Fluorescent material" afterglow.
The time, described unidirectional thyristor
SCRAgain conducting, pulse current I0 forms again rising edge of a pulse, and pulse current I0 enters the next pulse cycle.Thereafter, pulse current I0 just constantly repeats by this cycle.
In sum, can summarize the following technical characterictic of the present invention:
1, described unidirectional thyristor SCR conducting the time, pulse current I0 exports high level; Described unidirectional thyristor SCR cut-off the time, pulse current I0 output low level.
2, described LED assembly 300 is carried out the intermittently used patterns, the pulse of pulse current I0 output high level " account for " during, LED assembly 300 electrified light emittings; During the pulse " sky " of output low level, the afterglow of the 300 outage heat radiations of LED assembly and utilization " fluorescent material ".
In conjunction with Fig. 2, the gate pole G of described unidirectional thyristor SCR and the voltage between the negative electrode K
UGK＝u34－IG·R－U0………………………………………（1）
As previously mentioned, " R " is the equivalent resistance after potentiometer VR and semistor PTC are in series in above-mentioned (1) formula, and it is the equivalence triggering resistance of unidirectional thyristor SCR; IG is the electric current among potentiometer VR, the thermistor PTC; U0 is the voltage at LED assembly 300 two ends.
By the characteristic of unidirectional thyristor as can be known: as UGK=u34-IGR-U0 〉=UGT ... during i.e. (2) formula establishment of condition (2), unidirectional thyristor SCR is with regard to conducting.(2) UGT is that unidirectional thyristor changes the needed minimum gate pole direct voltage of conducting state into from off state in the formula.
In conjunction with (2) formula again in conjunction with Fig. 4, Fig. 3, Fig. 2 as can be known: along with the rising of LED light temperature, the resistance of thermistor PTC will increase thereupon; The resistance of thermistor PTC increases, and the value that the equivalence that makes described SCR is triggered resistance R increases; The value that equivalence triggers resistance R increases, and will make SCR change the moment of conducting state into from off state
T1To delay backward;
T1Delay backward and will the angle of flow Q of described SCR be diminished; The angle of flow Q of SCR diminishes and will the average pulse power on the LED assembly 300 be diminished; Average pulse power on the LED assembly 300 diminishes and will the heat of its generation be reduced; The heat that produces on the LED assembly 300 reduces the temperature that will make the LED lamp and reduces.
Said process is the temperature that the present invention controls the LED lamp automatically, the LED assembly is realized the process of heat protection.
With above-mentioned same method, also can analyze the present invention and realize adjusting the LED lamplight brightness by adjusting potentiometer VR, namely use potentiometer VR to the process of LED lamp light modulation.
So far, can summarize in addition three technical characterictics of the present invention:
1, described unidirectional thyristor SCR moment of beginning conducting
T1And angle of flow Q is determined by the resistance that equivalence triggers resistance R: when the resistance of equivalence triggering resistance R diminishes, described
T1In advance, described angle of flow Q becomes large thereupon; Otherwise, when the resistance of equivalence triggering resistance R becomes large, described
T1Postpone, described angle of flow Q diminishes thereupon.
2, described pulse-generating circuit 200 has the function of the temperature of automatic control LED lamp, and its control procedure is: the temperature of described LED lamp rises, and causes the resistance of the thermistor PTC in the pulse-generating circuit 200 to rise; The resistance of described thermistor PTC rises, and causes the angle of flow Q of described SCR to diminish; The angle of flow Q of SCR diminishes, and causes the average pulse power on the LED assembly 300 to diminish; Average pulse power on the LED assembly 300 diminishes, and causes the heat of its generation to reduce; The heat that produces on the LED assembly 300 reduces the temperature rise that will make the LED lamp and reduces.
In brief: when the temperature of described LED lamp rose, the present invention adjusted average pulse power on the LED assembly 300 automatically by thermistor PTC, made the temperature of LED lamp return extensive normal.
3, described pulse-generating circuit 200 has the function to the light modulation of LED lamp, and its light modulation process is: increase the resistance of potentiometer VR, the value that the equivalence that makes described SCR is triggered resistance R increases; The value that equivalence triggers resistance R increases, and will make SCR change the moment of conducting state into from off state
T1To delay backward;
T1Delay backward and will the angle of flow Q of described SCR be diminished; The angle of flow Q of SCR diminishes and will the average pulse power on the LED assembly 300 be diminished; Average pulse power on the LED assembly 300 diminishes and will its brightness be reduced; Otherwise, reduce the resistance of potentiometer VR, will make the angle of flow Q of described SCR become large and cause LED assembly 300 brightness to strengthen.
In brief: adjusting described potentiometer VR just can be to the light modulation of LED lamp, and the resistance of VR increases, and the brightness of LED lamp reduces; Otherwise the resistance of VR reduces, and the brightness of LED lamp increases.
In conjunction with Fig. 3, Fig. 4, Fig. 5, the repetition rate of the pulse current I0 of the present invention's output is two times of AC electric voltage frequency, and to the alternating current of 50Hz, the repetition rate of described pulse current I0 is 100Hz; To the alternating current of 60Hz, the repetition rate of described pulse current I0 then is 120Hz.The human the highest flicker frequency that can experience is 70Hz, therefore, even disregard in the light-emitting diode "
Fluorescent material" " twilight sunset " benefit, the LED lamp is used the present invention, also can not produce the impression of flicker to the people.
The experimental prototype long-time running result of present embodiment 1 proves that the present invention has following outstanding advantage:
1, is connected to ambipolar transient voltage suppressor diode TVS1 between two of anti-lightning rectification circuit 100 input N1 end and the N2 end, the function that the present invention has been possessed exempt from the hard pulse of thunderbolt lightning or static discharge (ESD), electric fast transition (EFT) to damage.
2, be provided with thermistor PTC in the triggering loop of unidirectional thyristor SCR in the pulse-generating circuit 200, make the present invention possess the function of the temperature of automatic control LED lamp.
3, be provided with potentiometer VR in the triggering loop of unidirectional thyristor SCR in the pulse-generating circuit 200, make the present invention possess the function of adjusting the brightness of LED lamp.
4, during the pulse " sky " of pulse current I0 output low level, the afterglow of the 300 outage heat radiations of LED assembly and utilization " fluorescent material " makes the further power saving economize on electricity of LED lamp.
Fig. 6 is the circuit theory diagrams of embodiment 2.Present embodiment 2 is compared with embodiment 1, has following two places to do change:
1, between the input N1 of fusible link FU and rectification circuit 100 end, set up decompression capacitor C;
2, replace potentiometer VR in the triggering loop of described unidirectional thyristor SCR with resistor R1.
It will be apparent to those skilled in the art, do above-mentioned change after, it is identical with embodiment 1 that the work of present embodiment 2 is crossed.
Claims (3)
- One kind hold concurrently can the light modulation of anti-thunder temperature control LED lamp pulse formula driving power, comprise fusible link (FU), anti-lightning rectification circuit (100) and pulse-generating circuit (200) three partly, LED assembly (300) is its load, it is characterized in that:Described anti-lightning rectification circuit is that to have two inputs be N1 and N2 end, two outputs four port networks that to be T1 hold with T2; The P1 end of the termination AC voltage of described fusible link FU, the other end is connected with described N1 end; Described N2 end is connected with the P2 end of AC voltage; One end of described pulse-generating circuit (200) is connected with described T1 end, and the other end is connected with the anode of described LED assembly; The equal link of the negative terminal ground E of described T2 end and described LED assembly.
- 2. anti-lightning rectification circuit as claimed in claim 1 (100) is characterized in that:Described anti-lightning rectification circuit (100) is restrained diode (TVS1) by the first diode (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4) and ambipolar transient voltage and is formed, and, the end that described ambipolar transient voltage is restrained diode (TVS1) is connected with the input N1 of anti-lightning rectification circuit (100), and the other end is connected with the input N2 of anti-lightning rectification circuit (100); Described the first diode (D1), the second diode (D2) negative pole separately all are connected with the output T1 of anti-lightning rectification circuit (100); Described the 3rd diode (D3), the 4th diode (D4) positive pole separately all is connected with the output T2 of anti-lightning rectification circuit (100); The negative pole of the positive pole of described the first diode (D1), the 3rd diode (D3) all is connected with the input N1 of anti-lightning rectification circuit (100); The negative pole of the positive pole of described the second diode (D2), the 4th diode (D4) all is connected with the input N2 of anti-lightning rectification circuit (100).
- 3. pulse-generating circuit as claimed in claim 1 (200) is characterized in that:Described pulse-generating circuit (200) by unidirectional thyristor ( SCR), potentiometer (VR) and semistor (PTC) form, and, described unidirectional thyristor ( SCR)One of anode (A), described thermistor (PTC) end all be connected with first output (T1) of anti-lightning rectification circuit (100); The other end of thermistor (PTC) is connected with potentiometer (VR), the other end of potentiometer (VR) and described unidirectional thyristor ( SCR)Gate pole (G) be connected; Described unidirectional thyristor ( SCR)Negative electrode (K) be connected with the anode of described LED assembly; Equivalent resistance R after described potentiometer (VR) and semistor (PTC) are in series become described unidirectional thyristor ( SCR)The triggering resistance R.
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|---|---|---|---|
| CN201210503641.XA CN102946678B (en) | 2012-12-01 | 2012-12-01 | Pulse-type driving power supply for thunder-resisting temperature-controlling light-dimming LED (Light Emitting Diode) lamp |
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| CN201210503641.XA CN102946678B (en) | 2012-12-01 | 2012-12-01 | Pulse-type driving power supply for thunder-resisting temperature-controlling light-dimming LED (Light Emitting Diode) lamp |
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| CN2178091Y (en) * | 1993-11-27 | 1994-09-28 | 刘五红 | Constant temp. ring cushion for closet seat |
| CN102781145A (en) * | 2012-07-27 | 2012-11-14 | 贵州索立得光电科技有限公司 | LED (light emitting diode) drive power circuit |
| CN102784993A (en) * | 2012-08-28 | 2012-11-21 | 周芸 | Automatic constant-temperature electric soldering iron |
| CN102946677A (en) * | 2012-12-01 | 2013-02-27 | 宁波市镇海华泰电器厂 | Pulse-type driving power supply for thunder-resisting temperature-controlling light-dimming LED (Light Emitting Diode) lamp |
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Effective date of registration: 20170411 Address after: 528329 Guangdong, Shunde District, the town of Taiping Village Ping Ling Industrial Zone, No. B, building No. 21, building, building four Patentee after: FOSHAN SHUNDE XINGSHI ELECTRONICS CO., LTD. Address before: 315200 Zhejiang province Zhenhai District of Ningbo City Jiao Chuan Ying Shi Qiao Zhu No. 74 Patentee before: Ningbo Zhenhai Huatai Electric Factory |
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