CN104619071A - Lighting control circuit and lamp - Google Patents
Lighting control circuit and lamp Download PDFInfo
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- CN104619071A CN104619071A CN201310542559.2A CN201310542559A CN104619071A CN 104619071 A CN104619071 A CN 104619071A CN 201310542559 A CN201310542559 A CN 201310542559A CN 104619071 A CN104619071 A CN 104619071A
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Abstract
The embodiment of the invention discloses a lighting control circuit and a lamp. The circuit includes a voltage input circuit, a control circuit and a feedback circuit, wherein the first input end of the control circuit is connected with the output end of the voltage input circuit, the second input end of the control circuit is connected with the output end of the feedback circuit, the output end of the control circuit is connected with the input end of the feedback circuit, the output end of the control circuit is used for being connected with a lighting load, and the input end of the voltage input circuit is used for being connected with an alternating current power supply. By implementing the lighting control circuit and the lamp, the control of the lighting circuit can be achieved only by common elements, and the structure is simple and stability is high.
Description
Technical field
The present invention relates to electronic circuit technology field, be specifically related to a kind of illumination control circuit and light fixture.
Background technology
Along with the development of economy and the rapid advances of society, various lighting circuit is widely used in the middle of the live and work of people, as domestic lighting, the illumination of plant produced line etc.Existing lighting circuit great majority adopt power management chip to adjust the stable of output voltage and output current, such lighting circuit complex structure and cost is high.
Summary of the invention
Embodiment of the present invention technical problem to be solved is to provide a kind of illumination control circuit and light fixture, only needs the control that common components and parts just can realize lighting circuit, and structure is simple, and stability is high.
In order to solve the problem, embodiments provide a kind of illumination control circuit, comprising:
Voltage input circuit, control circuit and feedback circuit, wherein:
The first input end of described control circuit connects the output of described voltage input circuit, second input of described control circuit connects the output of described feedback circuit, the output of described control circuit connects the input of described feedback circuit, the output of described control circuit is for connecting lighting load, and the input of described voltage input circuit is for connecting AC power; Described control circuit is used for the voltage be converted into by the direct voltage that described voltage input circuit exports for lighting load work; Described voltage input circuit is used for the alternating voltage that described AC power exports to be converted into direct voltage, and direct voltage is supplied to described control circuit; Voltage and electric current for supplying lighting load work that described feedback circuit exports for stablizing described control circuit.
Wherein, described control circuit comprises resistance R101, resistance R102, resistance R103, resistance R104, resistance R107, resistance R201, resistance R203, electric capacity C102, electric capacity C103, electric capacity C105, electric capacity C201, electric capacity C202, electric capacity C203, electric capacity C206, electric capacity C207, diode D101, diode D102, diode D201, voltage-stabiliser tube Z201, inductance L 201, inductance L 202, inductance L 203, transformer T1;
Described resistance R101 one end connects the output of described voltage input circuit respectively, described electric capacity C102 one end, primary winding one end of described resistance R103 one end and described transformer T1, the described electric capacity C102 other end connects the negative electrode of the described resistance R103 other end and described diode D101 respectively, the anode of described diode D101 connects the primary winding other end of described transformer T1, first auxiliary winding one end of described transformer T1 connects the anode of described resistance R201 one end and diode D201 respectively, the described resistance R201 other end connects described electric capacity C203 one end, the described electric capacity C203 other end connects the negative electrode of described diode D201 respectively, the anode of described electric capacity C201, the negative electrode of described voltage-stabiliser tube Z201 and described inductance L 201 one end, described inductance L 201 other end connects described electric capacity C202 one end respectively, described electric capacity C206 one end and described inductance L 202 one end, described inductance L 202 other end connects described electric capacity C207 one end, described resistance R203 one end and described electric capacity C207 one end connect the input of described feedback circuit, the first auxiliary winding other end of described transformer T1 connects the negative electrode of described electric capacity C201 respectively, the anode of described voltage-stabiliser tube Z201, the described electric capacity C202 other end, the described electric capacity C206 other end and described inductance L 203 one end, the described resistance R101 other end connects described resistance R102 one end, the described resistance R102 other end connects the output of described electric capacity C103 one end and described feedback circuit respectively, the described electric capacity C103 other end connects described resistance R104 one end, the described resistance R104 other end connects the anode of described diode D102 and second auxiliary winding one end of described transformer T1 respectively, the negative electrode of described diode D102 connects described resistance R107 one end, the described resistance R107 other end connects described electric capacity C105 one end, the described electric capacity C105 other end connect described transformer T1 the second auxiliary winding other end and for ground connection, wherein, the described electric capacity C207 other end, the described resistance R203 other end and described inductance L 203 other end are connected and for ground connection, described resistance R203 one end and described electric capacity C207 one end are for connecting lighting load, primary winding one end of described transformer T1, the first auxiliary winding other end of described transformer T1 and the second auxiliary winding other end Same Name of Ends each other of described transformer T1.
Wherein, voltage input circuit comprises fuse F1, filter capacitor CY1, filter capacitor CY2, rectifier bridge BD and filter capacitor C101;
Described fuse F1 one end connects described filter capacitor CY1 one end respectively, one end of the power input of described filter capacitor CY2 one end and described rectifier bridge BD, the described filter capacitor CY1 other end connects the other end of the power input of the described filter capacitor CY2 other end and described rectifier bridge BD respectively, the positive output end of the DC output end of described rectifier bridge BD connects the anode of described filter capacitor C101, the negative output terminal of the DC output end of described rectifier bridge BD connects the negative electrode of described filter capacitor C101, wherein, the described fuse F1 other end and the described filter capacitor CY1 other end are for connecting described AC power, the negative electrode of described filter capacitor C101 is used for ground connection.
Wherein, described feedback circuit comprises metal-oxide-semiconductor Q101, resistance R105, resistance R106, voltage-stabiliser tube ZD, resistance R109, electric capacity C104, triode Q102, triode Q103, resistance R108, photoelectrical coupler U203, diode D202, diode D203, voltage-stabiliser tube IC, comparator U201, comparator U202, resistance R202, resistance R206, electric capacity C205, resistance R209, resistance R210, resistance R211, resistance R204, resistance R205, resistance R207, resistance R208 and electric capacity C204;
The drain electrode of described metal-oxide-semiconductor connects the anode of described diode D101, the source electrode of described metal-oxide-semiconductor connects described resistance R105 one end, the grid of described metal-oxide-semiconductor connects the described resistance R102 other end respectively, described resistance R106 one end, described voltage-stabiliser tube ZD negative electrode, described resistance R109 one end, the emitter of described electric capacity C104 one end and described triode Q103, the collector electrode of described triode Q103 connects described resistance R108 one end respectively, first output of described photoelectrical coupler U203 and the base stage of described triode Q102, the base stage of described triode Q103 connects the described resistance R109 other end respectively, the collector electrode of the described resistance C104 other end and described triode Q102, the described resistance R108 other end connects second output of described photoelectrical coupler U203 and the described resistance R107 other end respectively, the first input end of described photoelectrical coupler U203 connects described resistance R202 one end, the described resistance R202 other end connects described resistance R210 one end respectively, described resistance R211 one end, the positive power source terminal of described comparator U201, the positive power source terminal of described comparator U202 and described electric capacity C207 one end, the described resistance R210 other end connects described resistance R209 one end respectively, the in-phase input end of described electric capacity C205 one end and described comparator U201, the described electric capacity C205 other end connects described resistance R206 one end, the described resistance R206 other end connects the output of described comparator U201 and the negative electrode of described diode D203 respectively, the anode of described D203 connects second input of described photoelectrical coupler U203 and the anode of described diode D202 respectively, the negative electrode of described diode D202 connects the output of described comparator U202 and described resistance R205 one end respectively, the described resistance R205 other end connects described electric capacity C204 one end, the described electric capacity C204 other end connects the inverting input of described resistance R204 one end and described comparator U202 respectively, the described resistance R204 other end connects described resistance R203 one end, the in-phase input end of described comparator U202 connects described resistance R208 one end and described resistance R207 one end respectively, the described resistance R208 other end connects the first end of described voltage-stabiliser tube IC respectively, second end of described voltage-stabiliser tube IC, the inverting input of the described resistance R211 other end and described comparator U201, the resistance R207 other end described in the three-terminal link of described voltage-stabiliser tube IC for ground connection, the negative power end of described comparator U201, negative power end and the described resistance R209 other end of described comparator U202 are respectively used to ground connection, the emitter of described triode Q102, the anode of described voltage-stabiliser tube ZD, the described resistance R106 other end and the described resistance R105 other end are connected and for ground connection.
Wherein, described metal-oxide-semiconductor Q101 is N-channel MOS pipe.
Wherein, described triode Q102 is NPN type triode.
Wherein, described triode Q103 is PNP type triode.
Accordingly, the embodiment of the present invention additionally provides a kind of light fixture, comprises above-mentioned illumination control circuit and LED.
In the embodiment of the present invention, the direct voltage that voltage input circuit exports is converted into the direct voltage for lighting load work by control circuit, and comes voltage and the electric current for supplying lighting load work of stabilization control circuit output by feedback circuit.Visible, implement the embodiment of the present invention, only need the control that common components and parts just can realize lighting circuit, and structure simply, stability is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structure chart of a kind of illumination control circuit that the embodiment of the present invention provides;
Fig. 2 is the structure chart of the another kind of illumination control circuit that the embodiment of the present invention provides;
Fig. 3 is the structure chart of a kind of light fixture that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, Fig. 1 is the structure chart of a kind of illumination control circuit that the embodiment of the present invention provides.As shown in Figure 1, this illumination control circuit 100 comprises control circuit 101, voltage input circuit 102 and feedback circuit 103, wherein:
The first input end of control circuit 101 connects the output of voltage input circuit 102, second input of control circuit 101 connects the output of feedback circuit 103, the output of control circuit 101 connects the input of feedback circuit 103, the output of control circuit 101 is for connecting lighting load, and the input of voltage input circuit 102 is for connecting AC power; Control circuit 101 is converted into the voltage for lighting load work for the direct voltage exported by voltage input circuit 102; Voltage input circuit 102 is converted into direct voltage for alternating voltage AC power exported, and direct voltage is supplied to control circuit 101; Voltage and electric current for supplying lighting load work that feedback circuit 103 exports for stabilization control circuit 101.
In the embodiment of the present invention, the direct voltage that voltage input circuit 102 exports is converted into the direct voltage for lighting load work by control circuit 101, and comes voltage and the electric current for supplying lighting load work of stabilization control circuit 101 output by feedback circuit 103.Visible, implement the embodiment of the present invention, only need the control that common components and parts just can realize lighting circuit, and structure simply, stability is high.
Refer to Fig. 2, Fig. 2 is the structure chart of the another kind of illumination control circuit that the embodiment of the present invention provides.As shown in Figure 2, this illumination control circuit 200 comprises control circuit 201, voltage input circuit 202 and feedback circuit 203, wherein:
As the optional execution mode of one, control circuit 201 can comprise resistance R101, resistance R102, resistance R103, resistance R104, resistance R107, resistance R201, resistance R203, electric capacity C102, electric capacity C103, electric capacity C105, electric capacity C201, electric capacity C202, electric capacity C203, electric capacity C206, electric capacity C207, diode D101, diode D102, diode D201, voltage-stabiliser tube Z201, inductance L 201, inductance L 202, inductance L 203, transformer T1, wherein:
Resistance R101 one end connects the output of voltage input circuit 202 respectively, electric capacity C102 one end, primary winding N1 one end of resistance R103 one end and transformer T1, the negative electrode of the electric capacity C102 other end difference contact resistance R103 other end and diode D101, the primary winding N1 other end of the anode connection transformer T1 of diode D101, first difference contact resistance R201 one end, auxiliary winding N2 one end of transformer T1 and the anode of diode D201, the resistance R201 other end connects electric capacity C203 one end, the electric capacity C203 other end connects the negative electrode of diode D201 respectively, the anode of electric capacity C201, the negative electrode of voltage-stabiliser tube Z201 and inductance L 201 one end, inductance L 201 other end connects electric capacity C202 one end respectively, electric capacity C206 one end and inductance L 202 one end, inductance L 202 other end connects electric capacity C207 one end, resistance R203 one end and electric capacity C207 one end connect the input of feedback circuit 203, the first auxiliary winding N1 other end of transformer T1 connects the negative electrode of electric capacity C201 respectively, the anode of voltage-stabiliser tube Z201, the electric capacity C202 other end, the electric capacity C206 other end and inductance L 203 one end, resistance R101 other end contact resistance R102 one end, the resistance R102 other end connects the output of electric capacity C103 one end and feedback circuit 203 respectively, electric capacity C103 other end contact resistance R104 one end, the resistance R104 other end connects the anode of diode D102 and second auxiliary winding N3 one end of transformer T1 respectively, negative electrode contact resistance R107 one end of diode D102, the resistance R107 other end connects electric capacity C105 one end, the second auxiliary winding N3 other end of electric capacity C105 other end connection transformer T1 for ground connection, wherein, the electric capacity C207 other end, the resistance R203 other end and inductance L 203 other end are connected and for ground connection, resistance R203 one end and electric capacity C207 one end are for connecting lighting load, primary winding N1 one end of transformer T1, the first auxiliary winding N2 other end of transformer T1 and the second auxiliary winding N3 other end Same Name of Ends each other of transformer T1.
Further alternative, control circuit 201 also comprises electric capacity CY, wherein:
The first auxiliary winding N2 other end of electric capacity CY one end connection transformer T1, the second auxiliary winding N3 other end of electric capacity CY other end connection transformer T1.
In the embodiment of the present invention, electric capacity CY can the interference of filtering clutter, improves the stability of circuit.
Further alternative, voltage input circuit 202 can comprise fuse F1, filter capacitor CY1, filter capacitor CY2, rectifier bridge BD and filter capacitor C101, wherein:
Fuse F1 one end connects filter capacitor CY1 one end respectively, one end 1 of the power input of filter capacitor CY2 one end and rectifier bridge BD, the filter capacitor CY1 other end connects the other end 3 of the power input of the filter capacitor CY2 other end and rectifier bridge BD respectively, the positive output end 2 of the DC output end of rectifier bridge BD connects the anode of filter capacitor C101, the negative output terminal 4 of the DC output end of rectifier bridge BD connects the negative electrode of filter capacitor C101, wherein, the fuse F1 other end and the filter capacitor CY1 other end are for connecting AC power, the negative electrode of filter capacitor C101 is used for ground connection.
Further alternative, voltage input circuit 202 can also comprise resistance RA, resistance RB, inductance L 101 and inductance L 102, wherein:
Contact resistance RB one end, resistance RA one end, the resistance RA other end connects filter capacitor CY1 one end and inductance L 101 one end respectively, inductance L 101 other end connects filter capacitor CY2 one end, the resistance RB other end connects the filter capacitor CY1 other end and inductance L 102 one end respectively, and inductance L 102 other end connects the filter capacitor CY2 other end.
In the embodiment of the present invention, resistance RA and resistance RB is for absorbing high pressure, and inductance L 101 and inductance L 102 are for filtering clutter.
Further alternative, feedback circuit 203 comprises metal-oxide-semiconductor Q101, resistance R105, resistance R106, voltage-stabiliser tube ZD, resistance R109, electric capacity C104, triode Q102, triode Q103, resistance R108, photoelectrical coupler U203, diode D202, diode D203, voltage-stabiliser tube IC, comparator U201, comparator U202, resistance R202, resistance R206, electric capacity C205, resistance R209, resistance R210, resistance R211, resistance R204, resistance R205, resistance R207, resistance R208 and electric capacity C204, wherein:
The drain electrode of metal-oxide-semiconductor connects the anode of diode D101, source electrode contact resistance R105 one end of metal-oxide-semiconductor, the grid contact resistance R102 other end respectively of metal-oxide-semiconductor, resistance R106 one end, voltage-stabiliser tube ZD negative electrode, resistance R109 one end, the emitter of electric capacity C104 one end and triode Q103, collector electrode contact resistance R108 one end respectively of triode Q103, first output of photoelectrical coupler U203 and the base stage of triode Q102, the base stage contact resistance R109 other end respectively of triode Q103, the collector electrode of the resistance C104 other end and triode Q102, the resistance R108 other end connects the second output and the resistance R107 other end of photoelectrical coupler U203 respectively, first input end contact resistance R202 one end of photoelectrical coupler U203, the resistance R202 other end is contact resistance R210 one end respectively, resistance R211 one end, the positive power source terminal of comparator U201, the positive power source terminal of comparator U202 and electric capacity C207 one end, the resistance R210 other end is contact resistance R209 one end respectively, the in-phase input end of electric capacity C205 one end and comparator U201, electric capacity C205 other end contact resistance R206 one end, the resistance R206 other end connects the output of comparator U201 and the negative electrode of diode D203 respectively, the anode of D203 connects second input of photoelectrical coupler U203 and the anode of diode D202 respectively, the negative electrode of diode D202 connects output and resistance R205 one end of comparator U202 respectively, the resistance R205 other end connects electric capacity C204 one end, the inverting input of electric capacity C204 other end difference contact resistance R204 one end and comparator U202, resistance R204 other end contact resistance R203 one end, in-phase input end contact resistance R208 one end and resistance R207 one end respectively of comparator U202, the resistance R208 other end connects the first end of voltage-stabiliser tube IC respectively, second end of voltage-stabiliser tube IC, the inverting input of the resistance R211 other end and comparator U201, the three-terminal link resistance R207 other end of voltage-stabiliser tube IC for ground connection, the negative power end of comparator U201, negative power end and the resistance R209 other end of comparator U202 are respectively used to ground connection, the emitter of triode Q102, the anode of voltage-stabiliser tube ZD, the resistance R106 other end and the resistance R105 other end are connected and for ground connection.
Optionally, metal-oxide-semiconductor Q101 is N-channel MOS pipe.
Optionally, triode Q102 is NPN type triode.
Optionally, triode Q103 is PNP type triode.
Below in conjunction with Fig. 2, the principle of the illumination control circuit 200 that the embodiment of the present invention provides is described in detail.
In the embodiment of the present invention, the ac voltage rectifier that AC power is exported by the filter action of filter capacitor CY1 and the rectified action of rectifier bridge BD by voltage input circuit 202 is direct voltage, after filtering after electric capacity C101 filtering clutter, for control circuit 201 provides direct voltage; The direct voltage exported by voltage input circuit 202 after the filtering of electric capacity C202, electric capacity C206 and electric capacity C207 in the transformation and control circuit 201 of transformer in control circuit 201 and the voltage stabilizing of voltage-stabiliser tube Z201, for lighting load provides operating voltage and electric current; The voltage that control circuit 201 exports is after the sampling of resistance R210 and resistance R209 in feedback circuit 203, the output output low level of comparator U201 is provided after the voltage compare provided by comparator U201 and voltage-stabiliser tube IC, and carry out the stable of adjusting control circuit 201 output voltage by the voltage of photoelectrical coupler U203, triode Q102 and triode Q103 change metal-oxide-semiconductor Q101 grid, and by the voltage that sampled voltage and the voltage-stabiliser tube IC of comparison resistance R204 provide, reach the effect of stabilization control circuit 201 output current.
Visible, implement the embodiment of the present invention, only need the control that common components and parts just can realize lighting circuit, and structure simply, stability is high.
Refer to Fig. 3, Fig. 3 is the structure chart of a kind of light fixture that the embodiment of the present invention provides.As shown in Figure 3, this light fixture comprises illumination control circuit 301 and LED 302, wherein illumination control circuit 301 comprises the illumination control circuit in above-described embodiment, with the illumination control circuit in above-described embodiment based on same design, its beneficial effect brought is also identical, particular content please refer to the embodiment of illumination control circuit, repeats no more herein.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, storage medium can comprise: flash disk, read-only memory (Read-Only Memory, ROM), random access device (Random Access Memory, RAM), disk or CD etc.
A kind of illumination control circuit and light fixture is provided to be described in detail to the embodiment of the present invention above, apply instantiation herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. an illumination control circuit, is characterized in that, comprising:
Voltage input circuit, control circuit and feedback circuit, wherein:
The first input end of described control circuit connects the output of described voltage input circuit, second input of described control circuit connects the output of described feedback circuit, the output of described control circuit connects the input of described feedback circuit, the output of described control circuit is for connecting lighting load, and the input of described voltage input circuit is for connecting AC power; Described control circuit is used for the voltage be converted into by the direct voltage that described voltage input circuit exports for lighting load work; Described voltage input circuit is used for the alternating voltage that described AC power exports to be converted into direct voltage, and direct voltage is supplied to described control circuit; Voltage and electric current for supplying lighting load work that described feedback circuit exports for stablizing described control circuit.
2. circuit as claimed in claim 1, it is characterized in that, described control circuit comprises:
Resistance R101, resistance R102, resistance R103, resistance R104, resistance R107, resistance R201, resistance R203, electric capacity C102, electric capacity C103, electric capacity C105, electric capacity C201, electric capacity C202, electric capacity C203, electric capacity C206, electric capacity C207, diode D101, diode D102, diode D201, voltage-stabiliser tube Z201, inductance L 201, inductance L 202, inductance L 203, transformer T1, wherein:
Described resistance R101 one end connects the output of described voltage input circuit respectively, described electric capacity C102 one end, primary winding one end of described resistance R103 one end and described transformer T1, the described electric capacity C102 other end connects the negative electrode of the described resistance R103 other end and described diode D101 respectively, the anode of described diode D101 connects the primary winding other end of described transformer T1, first auxiliary winding one end of described transformer T1 connects the anode of described resistance R201 one end and diode D201 respectively, the described resistance R201 other end connects described electric capacity C203 one end, the described electric capacity C203 other end connects the negative electrode of described diode D201 respectively, the anode of described electric capacity C201, the negative electrode of described voltage-stabiliser tube Z201 and described inductance L 201 one end, described inductance L 201 other end connects described electric capacity C202 one end respectively, described electric capacity C206 one end and described inductance L 202 one end, described inductance L 202 other end connects described electric capacity C207 one end, described resistance R203 one end and described electric capacity C207 one end connect the input of described feedback circuit, the first auxiliary winding other end of described transformer T1 connects the negative electrode of described electric capacity C201 respectively, the anode of described voltage-stabiliser tube Z201, the described electric capacity C202 other end, the described electric capacity C206 other end and described inductance L 203 one end, the described resistance R101 other end connects described resistance R102 one end, the described resistance R102 other end connects the output of described electric capacity C103 one end and described feedback circuit respectively, the described electric capacity C103 other end connects described resistance R104 one end, the described resistance R104 other end connects the anode of described diode D102 and second auxiliary winding one end of described transformer T1 respectively, the negative electrode of described diode D102 connects described resistance R107 one end, the described resistance R107 other end connects described electric capacity C105 one end, the described electric capacity C105 other end connect described transformer T1 the second auxiliary winding other end and for ground connection, wherein, the described electric capacity C207 other end, the described resistance R203 other end and described inductance L 203 other end are connected and for ground connection, described resistance R203 one end and described electric capacity C207 one end are for connecting lighting load, primary winding one end of described transformer T1, the first auxiliary winding other end of described transformer T1 and the second auxiliary winding other end Same Name of Ends each other of described transformer T1.
3. circuit as claimed in claim 2, it is characterized in that, described voltage input circuit comprises:
Fuse F1, filter capacitor CY1, filter capacitor CY2, rectifier bridge BD and filter capacitor C101, wherein:
Described fuse F1 one end connects described filter capacitor CY1 one end respectively, one end of the power input of described filter capacitor CY2 one end and described rectifier bridge BD, the described filter capacitor CY1 other end connects the other end of the power input of the described filter capacitor CY2 other end and described rectifier bridge BD respectively, the positive output end of the DC output end of described rectifier bridge BD connects the anode of described filter capacitor C101, the negative output terminal of the DC output end of described rectifier bridge BD connects the negative electrode of described filter capacitor C101, wherein, the described fuse F1 other end and the described filter capacitor CY1 other end are for connecting described AC power, the negative electrode of described filter capacitor C101 is used for ground connection.
4. circuit as claimed in claim 3, it is characterized in that, described feedback circuit comprises:
Metal-oxide-semiconductor Q101, resistance R105, resistance R106, voltage-stabiliser tube ZD, resistance R109, electric capacity C104, triode Q102, triode Q103, resistance R108, photoelectrical coupler U203, diode D202, diode D203, voltage-stabiliser tube IC, comparator U201, comparator U202, resistance R202, resistance R206, electric capacity C205, resistance R209, resistance R210, resistance R211, resistance R204, resistance R205, resistance R207, resistance R208 and electric capacity C204, wherein:
The drain electrode of described metal-oxide-semiconductor connects the anode of described diode D101, the source electrode of described metal-oxide-semiconductor connects described resistance R105 one end, the grid of described metal-oxide-semiconductor connects the described resistance R102 other end respectively, described resistance R106 one end, described voltage-stabiliser tube ZD negative electrode, described resistance R109 one end, the emitter of described electric capacity C104 one end and described triode Q103, the collector electrode of described triode Q103 connects described resistance R108 one end respectively, first output of described photoelectrical coupler U203 and the base stage of described triode Q102, the base stage of described triode Q103 connects the described resistance R109 other end respectively, the collector electrode of the described resistance C104 other end and described triode Q102, the described resistance R108 other end connects second output of described photoelectrical coupler U203 and the described resistance R107 other end respectively, the first input end of described photoelectrical coupler U203 connects described resistance R202 one end, the described resistance R202 other end connects described resistance R210 one end respectively, described resistance R211 one end, the positive power source terminal of described comparator U201, the positive power source terminal of described comparator U202 and described electric capacity C207 one end, the described resistance R210 other end connects described resistance R209 one end respectively, the in-phase input end of described electric capacity C205 one end and described comparator U201, the described electric capacity C205 other end connects described resistance R206 one end, the described resistance R206 other end connects the output of described comparator U201 and the negative electrode of described diode D203 respectively, the anode of described D203 connects second input of described photoelectrical coupler U203 and the anode of described diode D202 respectively, the negative electrode of described diode D202 connects the output of described comparator U202 and described resistance R205 one end respectively, the described resistance R205 other end connects described electric capacity C204 one end, the described electric capacity C204 other end connects the inverting input of described resistance R204 one end and described comparator U202 respectively, the described resistance R204 other end connects described resistance R203 one end, the in-phase input end of described comparator U202 connects described resistance R208 one end and described resistance R207 one end respectively, the described resistance R208 other end connects the first end of described voltage-stabiliser tube IC respectively, second end of described voltage-stabiliser tube IC, the inverting input of the described resistance R211 other end and described comparator U201, the resistance R207 other end described in the three-terminal link of described voltage-stabiliser tube IC for ground connection, the negative power end of described comparator U201, negative power end and the described resistance R209 other end of described comparator U202 are respectively used to ground connection, the emitter of described triode Q102, the anode of described voltage-stabiliser tube ZD, the described resistance R106 other end and the described resistance R105 other end are connected and for ground connection.
5. the circuit as described in claim 3 or 4, is characterized in that, described voltage input circuit also comprises:
Resistance RA, resistance RB, inductance L 101 and inductance L 102, wherein:
Described resistance RA one end connects described resistance RB one end, the described resistance RA other end connects described filter capacitor CY1 one end and described inductance L 101 one end respectively, described inductance L 101 other end connects described filter capacitor CY2 one end, the described resistance RB other end connects the described filter capacitor CY1 other end and described inductance L 102 one end respectively, and described inductance L 102 other end connects the described filter capacitor CY2 other end.
6. the circuit as described in claim 3 or 4, is characterized in that, described control circuit also comprises electric capacity CY, wherein:
Described electric capacity CY one end connects the first auxiliary winding other end of described transformer T1, and the described electric capacity CY other end connects the second auxiliary winding other end of described transformer T1.
7. circuit as claimed in claim 6, it is characterized in that, described metal-oxide-semiconductor Q101 is N-channel MOS pipe.
8. circuit as claimed in claim 6, it is characterized in that, described triode Q102 is NPN type triode.
9. circuit as claimed in claim 6, it is characterized in that, described triode Q103 is PNP type triode.
10. a light fixture, is characterized in that, comprises the circuit described in any one of claim 1 ~ 9 and LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310542559.2A CN104619071B (en) | 2013-11-05 | 2013-11-05 | A kind of illumination control circuit and lamps and lanterns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310542559.2A CN104619071B (en) | 2013-11-05 | 2013-11-05 | A kind of illumination control circuit and lamps and lanterns |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104619071A true CN104619071A (en) | 2015-05-13 |
| CN104619071B CN104619071B (en) | 2019-06-25 |
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| CN201310542559.2A Active CN104619071B (en) | 2013-11-05 | 2013-11-05 | A kind of illumination control circuit and lamps and lanterns |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431846A (en) * | 2008-12-02 | 2009-05-13 | 晋城市环球利特光电技术有限公司 | Driving circuit of LED lighting device |
| CN201336746Y (en) * | 2008-05-05 | 2009-10-28 | 汤征宁 | Constant current and voltage drive circuit for AC power supply LED |
| CN203233311U (en) * | 2013-04-15 | 2013-10-09 | 四川欧润特软件科技有限公司 | Circuit of stabilized voltage supply |
| CN203251234U (en) * | 2013-05-07 | 2013-10-23 | 高怡达科技(深圳)有限公司 | Switch power supply voltage stabilizing circuit |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201336746Y (en) * | 2008-05-05 | 2009-10-28 | 汤征宁 | Constant current and voltage drive circuit for AC power supply LED |
| CN101431846A (en) * | 2008-12-02 | 2009-05-13 | 晋城市环球利特光电技术有限公司 | Driving circuit of LED lighting device |
| CN203233311U (en) * | 2013-04-15 | 2013-10-09 | 四川欧润特软件科技有限公司 | Circuit of stabilized voltage supply |
| CN203251234U (en) * | 2013-05-07 | 2013-10-23 | 高怡达科技(深圳)有限公司 | Switch power supply voltage stabilizing circuit |
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| CN104619071B (en) | 2019-06-25 |
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