CN104602394A - Two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system - Google Patents
Two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system Download PDFInfo
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- CN104602394A CN104602394A CN201410664772.5A CN201410664772A CN104602394A CN 104602394 A CN104602394 A CN 104602394A CN 201410664772 A CN201410664772 A CN 201410664772A CN 104602394 A CN104602394 A CN 104602394A
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Abstract
The invention discloses a two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system. The two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system mainly comprises a voltage transformation circuit, a voltage stabilizing circuit and an output circuit connected with the output end of the voltage stabilizing circuit and is characterized in that a two-stage low-pass filtering and amplification circuit is further arranged between the voltage stabilizing circuit and the voltage transformation circuit and consists of an amplifier P1, an amplifier P2, an audion VT2, an audion VT3, a capacitor C4, a resistor R3, a capacitor C5 and the like. The positive pole of the capacitor C4 is connected with the voltage transformation circuit, the negative pole of the capacitor C4 is grounded, one end of the resistor R3 is connected with the normal phase input end of the amplifier P1, the other end of the resistor R3 is connected with the positive pole of the capacitor C4, the positive pole of the capacitor C5 is connected with the inverted input end of the amplifier P1 through the resistor R3, the negative pole of the capacitor C5 is connected with the negative pole of the capacitor C4. The output power of the two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system can be amplified, and the system can meet more LED simultaneous usage demands.
Description
Technical field
The present invention relates to a kind of LED information display system, specifically refer to a kind of LED voltage-stabilizing system amplifying process based on two-stage low-pass filtering.
Background technology
LED is called as forth generation lighting source or green light source, has the features such as energy-saving and environmental protection, the life-span is long, volume is little, is widely used in the fields such as various instruction, display, decoration, backlight, general lighting and urban landscape.
In megastore or supermarket, in order to reach better illuminating effect, often use a lot of LED, this just has very high requirement to LED drive system simultaneously.The power that current LED information display system exports is not high, can not meet the needs of some large supermarkets at present.
Summary of the invention
The power that the LED information display system that the object of the invention is to overcome exports is not high, can not meet the defect of the needs of some large supermarkets at present, provides a kind of LED voltage-stabilizing system amplifying process based on two-stage low-pass filtering of high-power output.
Object of the present invention is achieved through the following technical solutions: a kind of LED voltage-stabilizing system amplifying process based on two-stage low-pass filtering, mainly comprise transforming circuit, voltage stabilizing circuit, the output circuit be connected with this circuit output end of pressure-stabilizing, is also provided with two-stage low-pass filtering amplifying circuit between voltage stabilizing circuit and transforming circuit, described two-stage low-pass filtering amplifying circuit is by amplifier P1, amplifier P2, triode VT2, triode VT3, positive pole is connected with transforming circuit, the electric capacity C4 of minus earth, one end is connected with the normal phase input end of amplifier P1, the resistance R3 that the other end is connected with the positive pole of electric capacity C4, positive pole is connected with amplifier P1 inverting input after resistance R4, the electric capacity C5 that negative pole is connected with the negative pole of electric capacity C4, be serially connected in the electric capacity C6 between the output of amplifier P1 and inverting input, negative pole is connected with the output of amplifier P1, the electric capacity C7 that positive pole is connected with the base stage of triode VT2, one end is connected with the collector electrode of triode VT2, the resistance R5 that the other end is connected with the emitter of triode VT3, positive pole is connected with the base stage of triode VT3 after resistance R6, the electric capacity C8 that negative pole is connected with negative pole and the voltage stabilizing circuit of electric capacity C6 simultaneously, one end is connected with the positive pole of electric capacity C8, the resistance R7 that the other end is connected with the inverting input of amplifier P2, the resistance R8 be in parallel with resistance R7, be serially connected in the electric capacity C9 between the output of amplifier P2 and inverting input, and the resistance R9 be serially connected between the normal phase input end of amplifier P2 and output forms, the emitter of described triode VT2 is connected with electric capacity C6 negative pole, and the collector electrode of triode VT3 is connected with the normal phase input end of amplifier P2, and the output of amplifier P2 is connected with voltage stabilizing circuit.
Further, described transforming circuit is by transformer T1, and the former limit circuit being arranged on the former limit of transformer T1 and the secondary circuit being arranged on transformer T1 secondary form; Described former limit circuit is by triode VT1, the resistance R1 that one end is connected with the base stage of triode VT1, the other end is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the resistance C1 that positive pole is connected with the base stage of triode VT1, negative pole is connected with the collector electrode of triode VT1, the diode D1 that P pole is connected with the positive pole of electric capacity C1, N pole is then connected with the Same Name of Ends of transformer T1 former limit inductance coil L2, negative pole is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, positive pole forms as the electric capacity C2 of system one input; The base stage of described triode VT1 is connected with the Same Name of Ends of inductance coil L3 as another input of system, collector electrode, grounded emitter, and the Same Name of Ends of inductance coil L2 is connected with the non-same polarity of inductance coil L1, its non-same polarity is then connected with the Same Name of Ends of inductance coil L3.
The electric capacity C3 that described secondary circuit is then in parallel by the inductance coil L4 with transformer T1 secondary, the unidirectional thyristor D2 be all in parallel with electric capacity C3 and resistance R2 forms; Unidirectional thyristor D2 is connected with the positive pole of electric capacity C4 with a common end of resistance R2, another common end is then connected with the negative pole of electric capacity C8.
Described voltage stabilizing circuit is by three terminal regulator U, base stage is connected with the IN pin of this three terminal regulator U, emitter is as system one output, the triode VT4 that collector electrode is then connected with the output of amplifier P2, diode D3 between the emitter and collector being serially connected in triode VT4, positive pole is connected with the collector electrode of triode VT4 after resistance R10, the electric capacity C10 that negative pole is connected with the IN pin of three terminal regulator U after electric capacity C11, N pole is connected with the positive pole of electric capacity C10, the diode D4 that P pole is connected with the emitter of triode VT4, positive pole is connected with the OUT pin of three terminal regulator U, the electric capacity C12 that negative pole is connected with the negative pole of electric capacity C10 forms, the OUT pin of described three terminal regulator U is connected with the P pole of diode D4, GND pin ground connection.
Described output circuit is made up of inductance L 5, thyristor D5 and resistance R11, and described inductance L 5 one end is connected with the emitter of triode VT4, the other end is connected with the negative pole of electric capacity C12, and thyristor D5 is in parallel with inductance L 5 after connecting with resistance R11 again.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention adopts two-stage low-pass filtering amplifying circuit, and it can amplify the power output of LED information display system, the demand making system can meet more LED simultaneously to use.
(2) voltage stabilizing circuit of the present invention can when voltage ripple of power network or load variations time still can export constant voltage, ensure that LED normally works, extend LED useful life.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
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
As shown in Figure 1, the LED voltage-stabilizing system amplifying process based on two-stage low-pass filtering of the present invention, mainly comprise transforming circuit, voltage stabilizing circuit, the output circuit be connected with this circuit output end of pressure-stabilizing, in order to realize object of the present invention, between voltage stabilizing circuit and transforming circuit, be also provided with two-stage low-pass filtering amplifying circuit.
Wherein, two-stage low-pass filtering amplifying circuit is by amplifier P1, amplifier P2, triode VT2, triode VT3, positive pole is connected with transforming circuit, the electric capacity C4 of minus earth, one end is connected with the normal phase input end of amplifier P1, the resistance R3 that the other end is connected with the positive pole of electric capacity C4, positive pole is connected with amplifier P1 inverting input after resistance R4, the electric capacity C5 that negative pole is connected with the negative pole of electric capacity C4, be serially connected in the electric capacity C6 between the output of amplifier P1 and inverting input, negative pole is connected with the output of amplifier P1, the electric capacity C7 that positive pole is connected with the base stage of triode VT2, one end is connected with the collector electrode of triode VT2, the resistance R5 that the other end is connected with the emitter of triode VT3, positive pole is connected with the base stage of triode VT3 after resistance R6, the electric capacity C8 that negative pole is connected with negative pole and the voltage stabilizing circuit of electric capacity C6 simultaneously, one end is connected with the positive pole of electric capacity C8, the resistance R7 that the other end is connected with the inverting input of amplifier P2, the resistance R8 be in parallel with resistance R7, be serially connected in the electric capacity C9 between the output of amplifier P2 and inverting input, and the resistance R9 be serially connected between the normal phase input end of amplifier P2 and output forms, the emitter of described triode VT2 is connected with electric capacity C6 negative pole, and the collector electrode of triode VT3 is connected with the normal phase input end of amplifier P2, and the output of amplifier P2 is connected with voltage stabilizing circuit.By the effect of two-stage low-pass filtering amplifying circuit, the power output making system is larger, thus can meet more LED and use simultaneously.
Transforming circuit can be transformed into suitable voltage for system the line voltage of 220V, and it is by transformer T1, the former limit circuit being arranged on the former limit of transformer T1 and the secondary circuit being arranged on transformer T1 secondary composition; Described former limit circuit is by triode VT1, the resistance R1 that one end is connected with the base stage of triode VT1, the other end is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the resistance C1 that positive pole is connected with the base stage of triode VT1, negative pole is connected with the collector electrode of triode VT1, the diode D1 that P pole is connected with the positive pole of electric capacity C1, N pole is then connected with the Same Name of Ends of transformer T1 former limit inductance coil L2, negative pole is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, positive pole forms as the electric capacity C2 of system one input; The base stage of described triode VT1 is connected with the Same Name of Ends of inductance coil L3 as another input of system, collector electrode, grounded emitter, and the Same Name of Ends of inductance coil L2 is connected with the non-same polarity of inductance coil L1, its non-same polarity is then connected with the Same Name of Ends of inductance coil L3.
The electric capacity C3 that described secondary circuit is then in parallel by the inductance coil L4 with transformer T1 secondary, the unidirectional thyristor D2 be all in parallel with electric capacity C3 and resistance R2 forms; Unidirectional thyristor D2 is connected with the positive pole of electric capacity C4 with a common end of resistance R2, another common end is then connected with the negative pole of electric capacity C8.
The voltage exported to make system is more stable, is provided with voltage stabilizing circuit in system.It is by three terminal regulator U, base stage is connected with the IN pin of this three terminal regulator U, emitter is as system one output, the triode VT4 that collector electrode is then connected with the output of amplifier P2, diode D3 between the emitter and collector being serially connected in triode VT4, positive pole is connected with the collector electrode of triode VT4 after resistance R10, the electric capacity C10 that negative pole is connected with the IN pin of three terminal regulator U after electric capacity C11, N pole is connected with the positive pole of electric capacity C10, the diode D4 that P pole is connected with the emitter of triode VT4, positive pole is connected with the OUT pin of three terminal regulator U, the electric capacity C12 that negative pole is connected with the negative pole of electric capacity C10 forms, the OUT pin of described three terminal regulator U is connected with the P pole of diode D4, GND pin ground connection.In order to better implement the present invention, described three terminal regulator U is preferably WC7805 pressurizer, and WC7805 pressurizer has overvoltage, overcurrent protection, uses reliably, facilitates and low price.
Described output circuit is made up of inductance L 5, thyristor D5 and resistance R11, and described inductance L 5 one end is connected with the emitter of triode VT4, the other end is connected with the negative pole of electric capacity C12, and thyristor D5 is in parallel with inductance L 5 after connecting with resistance R11 again.
As mentioned above, just well the present invention can be implemented.
Claims (4)
1. one kind is amplified the LED voltage-stabilizing system of process based on two-stage low-pass filtering, mainly comprise transforming circuit, voltage stabilizing circuit, the output circuit be connected with this circuit output end of pressure-stabilizing, is characterized in that: between voltage stabilizing circuit and transforming circuit, be also provided with two-stage low-pass filtering amplifying circuit, described two-stage low-pass filtering amplifying circuit is by amplifier P1, amplifier P2, triode VT2, triode VT3, positive pole is connected with transforming circuit, the electric capacity C4 of minus earth, one end is connected with the normal phase input end of amplifier P1, the resistance R3 that the other end is connected with the positive pole of electric capacity C4, positive pole is connected with amplifier P1 inverting input after resistance R4, the electric capacity C5 that negative pole is connected with the negative pole of electric capacity C4, be serially connected in the electric capacity C6 between the output of amplifier P1 and inverting input, negative pole is connected with the output of amplifier P1, the electric capacity C7 that positive pole is connected with the base stage of triode VT2, one end is connected with the collector electrode of triode VT2, the resistance R5 that the other end is connected with the emitter of triode VT3, positive pole is connected with the base stage of triode VT3 after resistance R6, the electric capacity C8 that negative pole is connected with negative pole and the voltage stabilizing circuit of electric capacity C6 simultaneously, one end is connected with the positive pole of electric capacity C8, the resistance R7 that the other end is connected with the inverting input of amplifier P2, the resistance R8 be in parallel with resistance R7, be serially connected in the electric capacity C9 between the output of amplifier P2 and inverting input, and the resistance R9 be serially connected between the normal phase input end of amplifier P2 and output forms, the emitter of described triode VT2 is connected with electric capacity C6 negative pole, and the collector electrode of triode VT3 is connected with the normal phase input end of amplifier P2, and the output of amplifier P2 is connected with voltage stabilizing circuit.
2. a kind of LED voltage-stabilizing system amplifying process based on two-stage low-pass filtering according to claim 1, it is characterized in that: described transforming circuit is by transformer T1, and the former limit circuit being arranged on the former limit of transformer T1 and the secondary circuit being arranged on transformer T1 secondary form; Described former limit circuit is by triode VT1, the resistance R1 that one end is connected with the base stage of triode VT1, the other end is connected with the non-same polarity of transformer T1 former limit inductance coil L2, the resistance C1 that positive pole is connected with the base stage of triode VT1, negative pole is connected with the collector electrode of triode VT1, the diode D1 that P pole is connected with the positive pole of electric capacity C1, N pole is then connected with the Same Name of Ends of transformer T1 former limit inductance coil L2, negative pole is connected with the Same Name of Ends of transformer T1 former limit inductance coil L1, positive pole forms as the electric capacity C2 of system one input; The base stage of described triode VT1 is connected with the Same Name of Ends of inductance coil L3 as another input of system, collector electrode, grounded emitter, and the Same Name of Ends of inductance coil L2 is connected with the non-same polarity of inductance coil L1, its non-same polarity is then connected with the Same Name of Ends of inductance coil L3;
The electric capacity C3 that described secondary circuit is then in parallel by the inductance coil L4 with transformer T1 secondary, the unidirectional thyristor D2 be all in parallel with electric capacity C3 and resistance R2 forms; Unidirectional thyristor D2 is connected with the positive pole of electric capacity C4 with a common end of resistance R2, another common end is then connected with the negative pole of electric capacity C8.
3. a kind of LED voltage-stabilizing system amplifying process based on two-stage low-pass filtering according to claim 2, it is characterized in that: described voltage stabilizing circuit is by three terminal regulator U, base stage is connected with the IN pin of this three terminal regulator U, emitter is as system one output, the triode VT4 that collector electrode is then connected with the output of amplifier P2, diode D3 between the emitter and collector being serially connected in triode VT4, positive pole is connected with the collector electrode of triode VT4 after resistance R10, the electric capacity C10 that negative pole is connected with the IN pin of three terminal regulator U after electric capacity C11, N pole is connected with the positive pole of electric capacity C10, the diode D4 that P pole is connected with the emitter of triode VT4, positive pole is connected with the OUT pin of three terminal regulator U, the electric capacity C12 that negative pole is connected with the negative pole of electric capacity C10 forms, the OUT pin of described three terminal regulator U is connected with the P pole of diode D4, GND pin ground connection.
4. a kind of LED voltage-stabilizing system amplifying process based on two-stage low-pass filtering according to claim 3, it is characterized in that: described output circuit is made up of inductance L 5, thyristor D5 and resistance R11, described inductance L 5 one end is connected with the emitter of triode VT4, the other end is connected with the negative pole of electric capacity C12, and thyristor D5 is in parallel with inductance L 5 after connecting with resistance R11 again.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664772.5A CN104602394A (en) | 2014-11-18 | 2014-11-18 | Two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system |
| CN201510309510.1A CN104902637A (en) | 2014-11-18 | 2015-06-08 | LED voltage-stabilizing system based on two-stage low-pass filtering and amplification processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410664772.5A CN104602394A (en) | 2014-11-18 | 2014-11-18 | Two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system |
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| CN104602394A true CN104602394A (en) | 2015-05-06 |
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|---|---|---|---|
| CN201410664772.5A Pending CN104602394A (en) | 2014-11-18 | 2014-11-18 | Two-stage low-pass filtering and amplification treatment based LED voltage stabilizing system |
| CN201510309510.1A Pending CN104902637A (en) | 2014-11-18 | 2015-06-08 | LED voltage-stabilizing system based on two-stage low-pass filtering and amplification processing |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510309510.1A Pending CN104902637A (en) | 2014-11-18 | 2015-06-08 | LED voltage-stabilizing system based on two-stage low-pass filtering and amplification processing |
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| CN (2) | CN104602394A (en) |
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- 2014-11-18 CN CN201410664772.5A patent/CN104602394A/en active Pending
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- 2015-06-08 CN CN201510309510.1A patent/CN104902637A/en active Pending
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| CN104902637A (en) | 2015-09-09 |
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Application publication date: 20150506 |