CN104168693B - A kind of LED filter regulator circuit - Google Patents
A kind of LED filter regulator circuit Download PDFInfo
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- CN104168693B CN104168693B CN201410313787.7A CN201410313787A CN104168693B CN 104168693 B CN104168693 B CN 104168693B CN 201410313787 A CN201410313787 A CN 201410313787A CN 104168693 B CN104168693 B CN 104168693B
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Abstract
The invention discloses a kind of LED filter regulator circuit, main by filter circuit, the transforming circuit being connected with this filter circuit outfan, the mu balanced circuit being connected with this transforming circuit outfan, and the output circuit composition being connected with this circuit output end of pressure-stabilizing, described mu balanced circuit uses three terminal regulator U.The present invention still can export constant voltage, protection LED and circuit itself when voltage ripple of power network or when load changes so that it is longer service life.
Description
Technical field
The present invention relates to a kind of LED circuit, specifically refer to a kind of LED filter regulator circuit.
Background technology
LED is referred to as forth generation lighting source or green light source, has the features such as energy-saving and environmental protection, life-span length, volume be little, is widely used in the fields such as various instruction, display, decoration, backlight, general lighting and urban landscape.But, LED also has certain voltage range, as overtension or too low all can allow LED cannot normal operation, even affect its service life.
Present people life is perfect all the more, concerned power is also that comparison is nervous, many times too much whole voltage can be forced down because of equipment, or when there is fluctuation in line voltage, existing LED circuit cannot allow output voltage remain stable for, thus affecting the normal use of LED, in this case just in the urgent need to a kind of LED circuit that can export burning voltage.
Summary of the invention
When it is an object of the invention to overcome line voltage that fluctuation occurs, the spread of voltage of existing LED circuit output, thus having influence on the LED defect used, it is proposed that a kind of LED filter regulator circuit that can export burning voltage.
nullThe purpose of the present invention is achieved through the following technical solutions: a kind of LED filter regulator circuit，Main by filter circuit，The transforming circuit being connected with this filter circuit outfan，The mu balanced circuit being connected with this transforming circuit outfan，And the output circuit composition being connected with this circuit output end of pressure-stabilizing，It is characterized in that，Described mu balanced circuit is by three terminal regulator U，Base stage is connected with the IN end of this three terminal regulator U、Emitter stage is connected with the OUT terminal of three terminal regulator U、The crystal triode VT4 that colelctor electrode is then connected with the outfan of transforming circuit，One end is connected with the colelctor electrode of crystal triode VT4、The other end is through the electric capacity C6 resistance R4 being connected with the IN end of three terminal regulator U after electric capacity C7，It is serially connected in the diode D5 between the junction point of resistance R4 and electric capacity C6 and the OUT terminal of three terminal regulator U，One end is connected with the OUT terminal of three terminal regulator U、The electric capacity C8 that the other end is connected with output circuit，And it is serially connected with the diode D4 composition between colelctor electrode and the emitter stage of crystal triode VT4.
Described filter circuit includes: crystal triode VT1, crystal triode VT2, crystal triode VT3, P pole is connected with the base stage of crystal triode VT2, N pole is connected with the base stage of crystal triode VT1, control the unidirectional thyristor D1 that pole is then connected respectively after inductance L1 with one end of electric capacity C1 and electric capacity C2, it is serially connected in the resistance R1 between base stage and the colelctor electrode of crystal triode VT2, and is serially connected in the resistance R2 composition between base stage and the colelctor electrode of crystal triode VT1；The other end of described electric capacity C1 is then connected with the colelctor electrode of crystal triode VT2, and the other end of electric capacity C2 is then connected with the colelctor electrode of crystal triode VT1；The base stage of crystal triode VT3 is connected with the base stage of crystal triode VT1, the grounded emitter of crystal triode VT3；The emitter stage of crystal triode VT1, the emitter stage of crystal triode VT2 and the colelctor electrode of crystal triode VT3 are then connected with the input of transforming circuit respectively.
Described transforming circuit is by transformator T1, and the primary circuit on former limit being arranged on transformator T1 forms with the secondary circuit of the secondary being arranged on transformator T1.
The primary circuit of described transformator T1 is connected by the emitter stage of one end with crystal triode VT2, the electric capacity C3 that the other end is connected with the Same Name of Ends of the inductance coil L3 on the former limit of transformator T1, P pole is connected with the base stage of crystal triode VT2, the diode D2 that N pole is then connected with the non-same polarity of inductance coil L3, one end is connected with the N pole of unidirectional thyristor D1, the electric capacity C4 that the other end is connected with the non-same polarity of the inductance coil L4 on the former limit of transformator T1, and one end is connected with the non-same polarity of inductance coil L4, the inductance L2 composition that the other end is connected with the emitter stage of crystal triode VT1；The Same Name of Ends of described inductance coil L4 is connected with the non-same polarity of inductance coil L3, and the colelctor electrode of crystal triode VT3 is also connected with the non-same polarity of inductance coil L4.
The electric capacity C5 that the secondary circuit of described transformator T1 is then in parallel by the inductance coil L5 with transformator T1 secondary, forms with the electric capacity C5 unidirectional thyristor D3 being in parallel and resistance R3；The non-same polarity of described inductance coil L5 is connected with the colelctor electrode of crystal triode VT4, and the Same Name of Ends of inductance coil L5 is then connected with the junction point of electric capacity C6 and electric capacity C7.
Described output circuit is made up of inductance L6, IGCT D6 and resistance R5, described inductance L6 one end is connected with the emitter stage of crystal triode VT4, the other end is connected with the junction point of electric capacity C8 with electric capacity C7, and IGCT D6 is in parallel with inductance L6 again after connecting with resistance R5.
Described three terminal regulator U is WC7805 type manostat.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) present invention makes simply, and stability is high.
(2) present invention is compared with Conventional LED circuit, it is possible to still can export constant voltage when voltage ripple of power network or when load changes, it is ensured that LED normal operation, extends LED service life.
(3) present invention when there is fluctuation in line voltage can burning voltage, its circuit itself is also had protective effect, extends circuit service life.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
nullAs shown in Figure 1，The LED filter regulator circuit of the present invention is mainly by filter circuit，The transforming circuit being connected with this filter circuit outfan，The mu balanced circuit being connected with this transforming circuit outfan，And the output circuit composition being connected with this circuit output end of pressure-stabilizing，It is characterized in that，Described mu balanced circuit is by three terminal regulator U，Base stage is connected with the IN end of this three terminal regulator U、Emitter stage is connected with the OUT terminal of three terminal regulator U、The crystal triode VT4 that colelctor electrode is then connected with the outfan of transforming circuit，One end is connected with the colelctor electrode of crystal triode VT4、The other end is through the electric capacity C6 resistance R4 being connected with the IN end of three terminal regulator U after electric capacity C7，It is serially connected in the diode D5 between the junction point of resistance R4 and electric capacity C6 and the OUT terminal of three terminal regulator U，One end is connected with the OUT terminal of three terminal regulator U、The electric capacity C8 that the other end is connected with output circuit，And it is serially connected with the diode D4 composition between colelctor electrode and the emitter stage of crystal triode VT4.Because the DC voltage voltage stabilizing of filter circuit, transforming circuit output is poor, when voltage ripple of power network or when load changes, the voltage of output also changes therewith, and after mu balanced circuit, output voltage is more stable.
Described filter circuit includes: crystal triode VT1, crystal triode VT2, transistor VT3, electric capacity C1, electric capacity C2, resistance R1, inductance L1, unidirectional thyristor D1, resistance R2.nullThe P pole of described unidirectional thyristor D1 is connected with the base stage of crystal triode VT2、N pole is connected with the base stage of crystal triode VT1、Control pole colelctor electrode with crystal triode VT2 after inductance L1 and electric capacity C1 to be connected，The colelctor electrode of crystal triode VT1 is connected with the junction point of electric capacity C1 and inductance L1 after electric capacity C2、The emitter stage of crystal triode VT1 is then connected with transforming circuit，The base stage of transistor VT3 is connected with the base stage of crystal triode VT1、Its grounded emitter、Colelctor electrode is then connected with transforming circuit，Resistance R1 is serially connected with between crystal triode VT2 colelctor electrode and base stage，Resistance R2 is serially connected with between colelctor electrode and the base stage of crystal triode VT1，Described electric capacity C1 and the other end of electric capacity C2 then constitute the power input of the present embodiment.The pulsating volage of input is filtered by filter circuit, most AC compounent is filtered, and allows voltage become smooth DC voltage.
Described transforming circuit is by transformator T1, and the primary circuit on former limit being arranged on transformator T1 forms with the secondary circuit of the secondary being arranged on transformator T1.
The primary circuit of described transformator T1 includes: electric capacity C3, diode D2, electric capacity C4, inductance L2；One end of described electric capacity C3 is connected with the emitter stage of crystal triode VT2, the other end is connected with the Same Name of Ends of the former limit inductance coil L3 of transformator, the P pole of diode D2 is connected with the base stage of crystal triode VT2, N pole is connected with the non-same polarity of the former limit inductance coil L3 of transformator T1, one end of electric capacity C4 is connected with the N pole of unidirectional thyristor D1, the other end is connected with the colelctor electrode of crystal triode VT3, electric capacity C4 is also connected with the non-same polarity of the former limit inductance coil L4 of transformator T1 simultaneously, one end of inductance L2 is connected with the junction point of electric capacity C4 and the colelctor electrode of crystal triode VT3, the other end is then connected with the emitter stage of crystal triode VT1, the non-same polarity of described inductance coil L3 is connected with the Same Name of Ends of inductance coil L4.
The electric capacity C5 that the secondary circuit of described transformator T1 is in parallel by the secondary inductance coil L5 with transformator T1, and the unidirectional thyristor D3 in parallel with electric capacity C5 and resistance R3 composition respectively, the control pole ground connection of unidirectional thyristor D3, the non-same polarity of secondary inductance coil L5 of described transformator T1 is connected with the colelctor electrode of crystal triode VT4, the Same Name of Ends of inductance coil L5 is connected with the junction point of electric capacity C6 and electric capacity C7.
Described output circuit includes: inductance L6, IGCT D6, resistance R5, described inductance L6 one end is connected with the emitter stage of crystal triode VT4, the other end is connected with electric capacity C8, IGCT D6 is in parallel with inductance L6 again after connecting with resistance R5, and the N pole of IGCT D6 and the other end of resistance R5 then constitute the outfan of the present embodiment.
Described three terminal regulator U selects WC7805 manostat, and WC7805 manostat has overvoltage, overcurrent protection, uses reliable, convenient and low price.
During work, most AC compounent is filtered by voltage circuit after filtering, voltage is allowed to become smooth DC voltage, then through transforming circuit, voltage transformation is become required voltage swing, the rippled DC voltage exported from transforming circuit can be become constant DC voltage through mu balanced circuit, eventually pass output circuit output.
As it has been described above, just can well implement the present invention.
Claims (4)
- null1. a LED filter regulator circuit，Main by filter circuit，The transforming circuit being connected with this filter circuit outfan，The mu balanced circuit being connected with this transforming circuit outfan，And the output circuit composition being connected with this circuit output end of pressure-stabilizing，It is characterized in that，Described mu balanced circuit is by three terminal regulator U，Base stage is connected with the IN end of this three terminal regulator U、Emitter stage is connected with the OUT terminal of three terminal regulator U、The crystal triode VT4 that colelctor electrode is then connected with the outfan of transforming circuit，One end is connected with the colelctor electrode of crystal triode VT4、The other end is then sequentially through the electric capacity C6 resistance R4 being connected with the IN end of three terminal regulator U after electric capacity C7，N pole is connected with the junction point of resistance R4 and electric capacity C6、The diode D5 that P pole is then connected with the OUT terminal of three terminal regulator U，One end is connected with the OUT terminal of three terminal regulator U、The electric capacity C8 that the other end is connected with output circuit，And N pole is connected with the colelctor electrode of crystal triode VT4、The diode D4 composition that P pole is connected with the emitter stage of crystal triode VT4；Described filter circuit includes: crystal triode VT1, crystal triode VT2, crystal triode VT3, P pole is connected with the base stage of crystal triode VT2, N pole is connected with the base stage of crystal triode VT1, control pole then after inductance L1 with electric capacity C1 and electric capacity C2 jointly hold the unidirectional thyristor D1 being connected, it is serially connected in the resistance R1 between base stage and the colelctor electrode of crystal triode VT2, and is serially connected in the resistance R2 composition between base stage and the colelctor electrode of crystal triode VT1；One end of described electric capacity C1 is connected with the colelctor electrode of crystal triode VT2, its other end is then connected with the colelctor electrode of crystal triode VT1 after electric capacity C2；The base stage of crystal triode VT3 is connected with the base stage of crystal triode VT1, the grounded emitter of crystal triode VT3；The emitter stage of crystal triode VT1, the emitter stage of crystal triode VT2 and the colelctor electrode of crystal triode VT3 are then connected with 3 inputs of transforming circuit respectively.
- 2. a kind of LED filter regulator circuit according to claim 1, it is characterised in that described transforming circuit is by transformator T1, and the primary circuit on former limit being arranged on transformator T1 forms with the secondary circuit of the secondary being arranged on transformator T1；The primary circuit of described transformator T1 is connected by the emitter stage of one end with crystal triode VT2, the electric capacity C3 that the other end is connected with the Same Name of Ends of the inductance coil L3 on the former limit of transformator T1, P pole is connected with the base stage of crystal triode VT2, the diode D2 that N pole is then connected with the non-same polarity of inductance coil L3, one end is connected with the N pole of unidirectional thyristor D1, the electric capacity C4 that the other end is connected with the non-same polarity of the inductance coil L4 on the former limit of transformator T1, and one end is connected with the non-same polarity of inductance coil L4, the inductance L2 composition that the other end is connected with the emitter stage of crystal triode VT1；The Same Name of Ends of described inductance coil L4 is connected with the non-same polarity of inductance coil L3, and the colelctor electrode of crystal triode VT3 is also connected with the non-same polarity of inductance coil L4；The electric capacity C5 that the secondary circuit of described transformator T1 is then in parallel by the inductance coil L5 with transformator T1 secondary, forms with the electric capacity C5 unidirectional thyristor D3 being in parallel and resistance R3；The non-same polarity of described inductance coil L5 is connected with the colelctor electrode of crystal triode VT4, and the Same Name of Ends of inductance coil L5 is then connected with the junction point of electric capacity C6 and electric capacity C7.
- 3. a kind of LED filter regulator circuit according to claim 2, it is characterized in that, described output circuit is made up of inductance L6, IGCT D6 and resistance R5, described inductance L6 one end is connected with the emitter stage of crystal triode VT4, the other end is connected with the junction point of electric capacity C8 with electric capacity C7, the N pole of IGCT D6 is connected with the emitter stage of crystal triode VT4, its P pole then after resistance R5 the junction point of electric capacity C7 and electric capacity C8 be connected.
- 4. a kind of LED filter regulator circuit according to any one of claims 1 to 3, it is characterised in that described three terminal regulator U is WC7805 type manostat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410313787.7A CN104168693B (en) | 2014-07-03 | 2014-07-03 | A kind of LED filter regulator circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410313787.7A CN104168693B (en) | 2014-07-03 | 2014-07-03 | A kind of LED filter regulator circuit |
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| CN104168693A CN104168693A (en) | 2014-11-26 |
| CN104168693B true CN104168693B (en) | 2016-07-20 |
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| CN201410313787.7A Expired - Fee Related CN104168693B (en) | 2014-07-03 | 2014-07-03 | A kind of LED filter regulator circuit |
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| CN109217473A (en) * | 2018-10-09 | 2019-01-15 | 六安腾达信息科技有限公司 | Power information system with circuit protection function |
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| US6522087B1 (en) * | 2001-07-24 | 2003-02-18 | Chao-Cheng Lu | Ultra-high voltage impulse generator |
| CN103427674A (en) * | 2012-05-22 | 2013-12-04 | 成都酷玩网络科技有限公司 | 5V stabilized voltage supply with protecting function |
| CN103457476A (en) * | 2013-09-11 | 2013-12-18 | 昆山新金福精密电子有限公司 | Self-excitation transformation-based voltage stabilizing circuit |
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