CN210986524U - Linear L ED lamp circuit with dimming function - Google Patents
Linear L ED lamp circuit with dimming function Download PDFInfo
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- CN210986524U CN210986524U CN201920658070.4U CN201920658070U CN210986524U CN 210986524 U CN210986524 U CN 210986524U CN 201920658070 U CN201920658070 U CN 201920658070U CN 210986524 U CN210986524 U CN 210986524U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses a linear L ED lamp circuit with function of adjusting luminance, including rectifier circuit, first one-way circulation circuit, the matching circuit adjusts luminance, L ED luminescent circuit, second one-way circulation circuit, electronic switch circuit and cluster and state control circuit, L ED luminescent circuit includes first L ED luminescent module and second L ED luminescent module, cluster and state control circuit is used for comparing rectifier circuit output end voltage and the conducting voltage of first L ED luminescent module, and according to the result control of comparison match circuit that adjusts luminance, electronic switch circuit, switch on or end between its self first output and its earthing terminal and switch on or end between its self second output and its earthing terminal, make first L ED luminescent module and second L ED luminescent module not luminous simultaneously, or make first L ED luminescent module and second L ED luminescent module be parallel state or series state and shine simultaneously, the advantage is luminous efficiency is higher, and be difficult to produce the problem of generating heat.
Description
Technical Field
The utility model relates to a linear L ED lamp circuit especially relates to a linear L ED lamp circuit with dimming function.
Background
At present, the commercial power with the dimmer has two connecting ends, namely a live wire connecting end and a zero line connecting end of the commercial power, the linear L ED lamp with the dimming function is connected with the live wire connecting end and the zero line connecting end of the commercial power to be connected with the commercial power, and the brightness of the linear L ED lamp can be controlled by adjusting the dimmer, so that the dimming function of the linear L ED lamp is realized.
The linear light-emitting circuit comprises a rectification circuit, a unidirectional current-passing circuit, a dimming matching circuit, a linear constant current circuit and a L ED light-emitting circuit, wherein the rectification circuit comprises a live wire input end, a zero wire input end, an output end and a ground end, the rectification circuit is used for converting alternating current voltage input into mains power into pulsating direct current voltage to be output from the output end of the rectification circuit, the unidirectional current-passing circuit comprises a positive electrode and a negative electrode, current in the unidirectional current-passing circuit is conducted when the current flows from the positive electrode to the negative electrode of the unidirectional current-passing circuit, and is cut off, the dimming matching circuit comprises a positive electrode, a control end and a ground end, L2 the light-emitting circuit comprises a positive electrode, an output end, a control end and a ground end, when the current in the unidirectional current-passing circuit is not passed through the linear constant current-emitting circuit, the output end and the neutral wire-passing circuit are conducted, so that the current is not conducted between the live wire input end and the neutral wire input end, the neutral wire input end is connected to the linear light-emitting circuit, the linear light-emitting circuit is connected to the neutral wire input end, the linear light-emitting circuit is connected to the neutral wire circuit, the linear light-emitting circuit is connected to the neutral wire input end of the linear light-emitting circuit, the linear light-emitting circuit is connected to the unidirectional current-emitting circuit, the unidirectional current-emitting circuit is connected to the neutral wire circuit, the unidirectional current-emitting circuit is connected to the neutral wire input end of the unidirectional current-emitting circuit, the unidirectional current-emitting circuit is connected to the unidirectional current-emitting circuit, the unidirectional current-emitting circuit is connected to the neutral wire circuit, the unidirectional current-emitting circuit is connected to the unidirectional current-emitting circuit, the unidirectional current-emitting circuit is connected to the neutral circuit is connected to the unidirectional current.
When the linear L ED lamp circuit with the dimming function is used in a 220-240V power grid, because the conduction voltage of the L ED light emitting circuit is high, when the L ED light emitting circuit does not emit light, the positive electrode and the ground terminal of the dimming matching circuit are conducted, and the time is long, the power consumption of the dimming matching circuit is large, heat is easy to generate, and finally the defects that the linear L ED lamp circuit with the dimming function is low in light emitting efficiency and large in heat generation are caused, so that the use range of the linear L ED lamp circuit with the dimming function is limited.
Disclosure of Invention
The utility model aims to solve the technical problem that a linear L ED lamp circuit with function of adjusting luminance that luminous efficiency is higher, and be difficult to produce the problem of generating heat is provided.
The technical scheme adopted by the utility model for solving the technical problems is that a linear L ED lamp circuit with dimming function comprises a rectifying circuit, a first unidirectional pass-through circuit, a dimming matching circuit and a L ED light-emitting circuit, the rectifying circuit comprises a live wire input end, a zero wire input end, an output end and a grounding end, the first unidirectional pass-through circuit comprises a positive electrode and a negative electrode, the dimming matching circuit comprises a positive electrode, a control end and a grounding end, the output end of the rectifying circuit, the positive electrode of the first unidirectional pass-through circuit is connected with the positive electrode of the dimming matching circuit, the grounding end of the rectifying circuit is connected with the grounding end of the dimming matching circuit, the linear L ED lamp circuit further comprises a second unidirectional pass-through circuit, an electronic switch circuit and a series parallel connection state control circuit, the second unidirectional pass-through circuit comprises a positive electrode and a negative electrode, the electronic switch circuit comprises a positive electrode 638, the electronic switch 638 has a positive electrode, the control end and a control end, the series connection state of the first unidirectional pass-through circuit is equal to the positive electrode 638 LED light-emitting module, the first unidirectional pass-through circuit, the second unidirectional pass-through circuit is connected with the positive electrode 638 LED control circuit, the positive electrode 638 light-emitting module, the second unidirectional pass-through control circuit, the second unidirectional pass-through circuit, the second unidirectional pass-control circuit is connected with the positive electrode 638 LED control circuit, the serial connection state, the second unidirectional pass-control circuit, the serial connection state of the second unidirectional pass-control circuit, the second unidirectional pass-control circuit is connected with the positive electrode 638 serial connection control circuit, the positive electrode 638 serial connection state, the positive electrode 638 serial connection control circuit, the first unidirectional pass-control circuit, the second unidirectional pass-control circuit is connected with the second serial connection control circuit, the second unidirectional pass-through-control circuit, the second unidirectional pass-control circuit, the serial connection control circuit, the first control circuit, the second unidirectional pass-control circuit is connected with the positive electrode 638 serial connection control circuit, the first control circuit, the serial connection control circuit, the second serial connection control circuit is connected with the serial connection state, the second serial connection control circuit, the second serial connection state of the LED control circuit is connected with the first control circuit is connected with the positive electrode 638 serial connection state, the LED control circuit, the second serial connection state, the LED control circuit, the serial connection state of the LED control circuit is connected with the LED control circuit, the.
The rectifying circuit is used for converting mains supply alternating current into pulsating direct current voltage to be output at an output end of the rectifying circuit, when the output voltage of the rectifying circuit is smaller than the conducting voltage of the first L ED light emitting module, a first control end and a second control end of the series-parallel state control circuit respectively output on signals, at the moment, an anode of the dimming matching circuit is conducted with a constant current, because the output voltage of the rectifying circuit is smaller than the conducting voltage of the first L ED light emitting module, the output voltage is not enough to enable the first L0 ED light emitting module and the second L ED light emitting module to be conducted, the first L ED light emitting module and the second 8655 ED light emitting module do not emit light, when the output voltage of the rectifying circuit is larger than or equal to the conducting voltage of the first L ED light emitting module and smaller than two times of the conducting voltage of the first L ED light emitting module, the second control end of the series-parallel state control circuit outputs an on signal, when the anode of the first LED light emitting module is connected with the conducting voltage of the first 3625, the second LED light emitting module is connected with the second light emitting module, when the anode of the constant current is larger than the second light emitting module, the second light emitting module is connected with the second light emitting module, the constant current output end of the constant current of the second light emitting module, the second light emitting module is equal to be connected between the first 3625, when the first 364 ED light emitting module, the anode of the light emitting module, the light emitting module is connected between the anode of the light emitting module, the light emitting module is disconnected, the light emitting module, the second light emitting module, the light emitting module is disconnected, the light emitting module is disconnected, the second light emitting module, the light emitting module is disconnected, the second light.
The series-parallel state control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a first diode and a first chip with the model of RM9026, wherein the first diode is a rectifier diode, one end of the first resistor is the input end of the series-parallel state control circuit, the other end of the first resistor, one end of the second resistor and the 3 rd pin of the first chip are connected, the 2 nd pin of the first chip is the anode of the series-parallel state control circuit, the 4 th pin of the first chip is connected with one end of the fourth resistor, the 5 th pin of the first chip is connected with one end of the third resistor, the connecting end of the first pin and one end of the third resistor is the first control end of the series-parallel state control circuit, and the other end of the third resistor, The other end of the fourth resistor is connected with one end of the fifth resistor, a pin 7 of the first chip is a second control end of the serial-parallel state control circuit, the 1 st pin of the first chip is the first output end of the series-parallel control circuit, the 8 th pin of the first chip, one end of the sixth resistor and one end of the seventh resistor are connected with the cathode of the first diode, the anode of the first diode is the second output end of the series-parallel state control circuit, the other end of the sixth resistor is connected with the 6 th pin of the first chip, the other end of the seventh resistor is connected with one end of the first capacitor, the bottom electrode of the first chip, the other end of the second resistor, the other end of the fifth resistor and the other end of the first capacitor are connected, and the connecting end of the bottom electrode of the first chip, the other end of the second resistor, the other end of the fifth resistor and the other end of the first capacitor is the grounding end of the serial-parallel state control circuit. The circuit adopts a simple structure to simultaneously realize the control of the electronic switch circuit, the dimming matching circuit and the first output end and the second output end inside the electronic switch circuit and the dimming matching circuit, and has lower cost.
The electronic switch circuit comprises a second chip and a second diode, the model of the second chip is SM081, the second diode is a rectifier diode, the 1 st pin of the second chip is the anode of the electronic switch circuit, the 2 nd pin of the second chip is connected with the anode of the second diode, the cathode of the second diode is the cathode of the electronic switch circuit, and the 3 rd pin of the second chip is the control end of the electronic switch circuit. The circuit adopts fewer elements to realize the switching function, and is low in cost and convenient to realize.
The dimming matching circuit comprises a third chip, an eighth resistor and a ninth resistor, the model of the third chip is SM088, one end of the eighth resistor is the anode of the dimming matching circuit, the other end of the eighth resistor is connected with the 1 st pin of the third chip, the 3 rd pin of the third chip is connected with one end of the ninth resistor, the other end of the ninth resistor is the control end of the dimming matching circuit, and the 2 nd pin of the third chip is the grounding end of the dimming matching circuit. The circuit has the advantages of less elements, simple structure and low cost.
First one-way through-flow circuit include the third diode, the third diode be rectifier diode, the third diode positive pole do first one-way through-flow circuit's positive pole, the third diode negative pole do first one-way through-flow circuit's negative pole, second one-way through-flow circuit include the fourth diode, the fourth diode be rectifier diode, the fourth diode positive pole do second one-way through-flow circuit's positive pole, the fourth diode negative pole do second one-way through-flow circuit's negative pole.
Rectifier circuit adopt full-bridge rectifier bridge to pile up and realize, full-bridge rectifier bridge pile's the 1 st foot do rectifier circuit's live wire input, full-bridge rectifier bridge pile's the 2 nd foot do rectifier circuit's output, full-bridge rectifier bridge pile's the 3 rd foot do rectifier circuit's zero line input, full-bridge rectifier bridge pile's the 4 th foot do rectifier circuit's earthing terminal.
The linear L ED lamp circuit further comprises a filter circuit, the filter circuit is provided with an anode and a cathode, the anode of the filter circuit is connected with the anode of the first L ED light-emitting module, and the cathode of the filter circuit is connected with the cathode of the second L ED light-emitting module.
The filter circuit comprises a tenth resistor and a second capacitor, the second capacitor is an electrolytic capacitor, one end of the tenth resistor is connected with the anode of the second capacitor, the connecting end of the tenth resistor is the anode of the filter circuit, the other end of the tenth resistor is connected with the cathode of the second capacitor, and the connecting end of the tenth resistor is the cathode of the filter circuit. The filter circuit has simple structure and low cost.
Compared with the prior art, the utility model has the advantages that through setting up second unidirectional current-passing circuit, electronic switch circuit and series-parallel state control circuit, series-parallel state control circuit both is used for judging whether its second output has the situation that the electric current flows through, control the switching on or off between the positive pole and the earthing terminal of dimming matching circuit, and be used for comparing rectifier circuit output terminal voltage and the conducting voltage of first L ED lighting module, and control switching on or off between the positive pole and the negative pole of electronic switch circuit and the switching on or off between the first output of series-parallel state control circuit and its earthing terminal according to the comparison result, make first L ED lighting module and second 735 ED lighting module do not give out light simultaneously, or make first L ED lighting module and second L ED lighting module be parallel state or series state and give out light simultaneously, because 583 ED lighting circuit includes first L ED lighting module and second L lighting module, first L ED lighting module and second L ED lighting module turn on voltage are the parallel state or series state and give out light simultaneously, because the on voltage of first L ED lighting module and second L ED lighting module is equivalent when the linear luminous module reaches the earthing terminal of the matching circuit, thereby the luminous efficiency of the linear luminous module is reduced and the linear luminous efficiency of the linear luminous module is reduced in the linear luminous module and luminous module 539 luminous module, thereby the luminous efficiency of the luminous module is reduced and luminous module, the luminous module of the luminous module used in the linear luminous module of the power grid 240, thereby luminous module, the luminous module is reduced luminous module, the.
Drawings
Fig. 1 is a block diagram of a conventional linear L ED lamp circuit with dimming function;
fig. 2 is a block diagram of a linear L ED lamp circuit with a dimming function according to a first embodiment of the present invention;
fig. 3 is a block diagram of a linear L ED lamp circuit with a dimming function according to a second embodiment of the present invention;
fig. 4 is a circuit diagram of a linear L ED lamp circuit with a dimming function according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
In one embodiment, as shown in fig. 2, a linear L ED lamp circuit with a dimming function includes a rectifying circuit, a first unidirectional pass circuit, a dimming matching circuit and a L ED light emitting circuit, the rectifying circuit has a live wire input end, a neutral wire input end, an output end and a ground end, the first unidirectional pass circuit has a positive electrode and a negative electrode, the dimming matching circuit has a positive electrode, a control end and a ground end, the output end of the rectifying circuit, the positive electrode of the first unidirectional pass circuit and the positive electrode of the dimming matching circuit are connected, the ground end of the rectifying circuit and the ground end of the dimming matching circuit are connected, the linear L ED lamp circuit further includes a second unidirectional pass circuit, an electronic switch circuit and a series-parallel state control circuit, the second unidirectional pass circuit has a positive electrode and a negative electrode, the electronic switch circuit has a positive electrode, a negative electrode and a control end, the electronic switch circuit has a positive electrode, an input end, a first control end, a second control end, a first output end and a second output end, a second output end and a ground end, a second end and a series-parallel state control circuit, the light emitting circuit includes a first unidirectional pass circuit, a second control circuit, a positive electrode 638 light emitting module, a second control circuit, a series-on state, a second control circuit, a positive electrode 638 control circuit, a second control circuit, a positive electrode control circuit, a second control circuit, a third control circuit, a fourth control circuit, a fifth control circuit, a sixth control circuit, a fifth control circuit.
In this embodiment, the rectifying circuit is configured to convert a mains ac into a pulsating dc voltage and output the pulsating dc voltage at an output terminal thereof, when an output voltage of the rectifying circuit is less than an on voltage of the first L ED light emitting module, the first control terminal and the second control terminal of the series-parallel state control circuit respectively output an on signal, at this time, an anode and a ground terminal of the dimming matching circuit are turned on with a constant current, because an output voltage of the rectifying circuit is less than an on voltage of the first L ED light emitting module, the output voltage is insufficient to turn on the first L ED light emitting module and the second L ED light emitting module, the first L ED light emitting module and the second 8295 ED light emitting module do not emit light, when an output voltage of the rectifying circuit is greater than or equal to an on voltage of the first L ED light emitting module and less than twice an on voltage of the first 466 ED light emitting module, the second control terminal of the series-parallel state control circuit outputs an on signal, the anode and the second control terminal of the series-parallel state control circuit are turned on signal, the anode and the second control circuit are turned on signal, the cathode of the series-parallel state control circuit are turned on signal, the anode and the second light emitting module, when the first L ED light emitting module and the second led light emitting module are turned-parallel state, the second light emitting module, the series-parallel state control circuit are turned-parallel circuit, the on signal, the first and the second light emitting module, the second light emitting module are turned-parallel circuit, the series-parallel state control circuit, the led light emitting module, the constant current control circuit is turned-parallel circuit, when the first L led light emitting module, the on circuit is turned-on circuit, the turned-off, the constant current control circuit, the first light emitting module, the second light emitting module, the constant current control circuit is turned-on circuit, the second light emitting module, the constant current control circuit is turned-off, the constant current control.
In a second embodiment, as shown in fig. 3, a linear L ED lamp circuit with a dimming function includes a rectifying circuit, a first unidirectional pass circuit, a dimming matching circuit and a L ED light emitting circuit, the rectifying circuit has a live wire input terminal, a neutral wire input terminal, an output terminal and a ground terminal, the first unidirectional pass circuit has a positive terminal and a negative terminal, the dimming matching circuit has a positive terminal, a control terminal and a ground terminal, the output terminal of the rectifying circuit, the positive terminal of the first unidirectional pass circuit and the positive terminal of the dimming matching circuit are connected, the ground terminal of the rectifying circuit and the ground terminal of the dimming matching circuit are connected, the linear L ED lamp circuit further includes a second unidirectional pass circuit, an electronic switch circuit, a series-parallel state control circuit and a filter circuit, the second unidirectional pass circuit has a positive terminal and a negative terminal, the electronic switch circuit has a positive terminal, a negative terminal and a control terminal, the series-parallel state control circuit has a positive terminal, the negative terminal of the electronic switch control circuit has a positive terminal, the positive terminal of the series-parallel state control circuit, the series-parallel state control circuit has a positive terminal, the positive terminal of the second unidirectional pass circuit, the electronic switch control circuit, the positive terminal of the series-parallel control circuit, the series control circuit has a positive terminal of the second unidirectional pass circuit, the electronic switch control circuit, the second unidirectional pass circuit, the electronic switch control circuit, the series control circuit, the second unidirectional pass circuit, the positive terminal of the electronic switch control circuit, the negative terminal of the series control circuit, the electronic switch control circuit, the negative terminal of the light emitting module, the positive terminal of the series control circuit, the negative terminal of the light emitting module, the series control circuit, the negative terminal of the series control circuit, the light emitting module, the negative terminal of the light emitting module, the negative terminal of the light emitting module, the negative terminal of the light emitting module, the light emitting module of the light emitting.
In this embodiment, the rectifying circuit is configured to convert a mains ac into a pulsating dc voltage and output the pulsating dc voltage at an output terminal thereof, when an output voltage of the rectifying circuit is less than an on voltage of the first L ED light emitting module, the first control terminal and the second control terminal of the series-parallel state control circuit respectively output an on signal, at this time, an anode and a ground terminal of the dimming matching circuit are turned on with a constant current, because an output voltage of the rectifying circuit is less than an on voltage of the first L ED light emitting module, the output voltage is insufficient to turn on the first L ED light emitting module and the second L ED light emitting module, the first L ED light emitting module and the second 8295 ED light emitting module do not emit light, when an output voltage of the rectifying circuit is greater than or equal to an on voltage of the first L ED light emitting module and less than twice an on voltage of the first 466 ED light emitting module, the second control terminal of the series-parallel state control circuit outputs an on signal, the anode and the second control terminal of the series-parallel state control circuit are turned on signal, the anode and the second control circuit are turned on signal, the cathode of the series-parallel state control circuit are turned on signal, the anode and the second light emitting module, when the first L ED light emitting module and the second led light emitting module are turned-parallel state, the second light emitting module, the series-parallel state control circuit are turned-parallel circuit, the on signal, the first and the second light emitting module, the second light emitting module are turned-parallel circuit, the series-parallel state control circuit, the led light emitting module, the constant current control circuit is turned-parallel circuit, when the first L led light emitting module, the on circuit is turned-on circuit, the turned-off, the constant current control circuit, the first light emitting module, the second light emitting module, the constant current control circuit is turned-on circuit, the second light emitting module, the constant current control circuit is turned-off, the constant current control.
As shown in fig. 4, in the present embodiment, the serial-parallel state control circuit includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a first diode D1, and a first chip U1 with the model number RM9026, the first diode D1 is a rectifier diode, one end of the first resistor R1 is an input end of the serial-parallel state control circuit, the other end of the first resistor R1, one end of the second resistor R2 and the 3 rd pin of the first chip U1 are connected, the 2 nd pin of the first chip U1 is an anode of the serial-parallel state control circuit, the 4 th pin of the first chip U1 and one end of the fourth resistor R4 are connected, the 5 th pin of the first chip U1 and one end of the third resistor R3 are connected, and the other end of the first resistor R599 and the other end of the first resistor R5928 are connected, the 7 th pin of the first chip U1 is a second control end of the serial-parallel state control circuit, the 1 st pin of the first chip U1 is a first output end of the serial-parallel state control circuit, the 8 th pin of the first chip U1, one end of the sixth resistor R6 and one end of the seventh resistor R7 are connected with the cathode of the first diode D1, the anode of the first diode D1 is a second output end of the serial-parallel state control circuit, the other end of the sixth resistor R6 is connected with the 6 th pin of the first chip U1, the other end of the seventh resistor R7 is connected with one end of the first capacitor C1, the bottom electrode of the first chip U1, the other end of the second resistor R2 and the other end of the fifth resistor R5 are connected with the other end of the first capacitor C1, and the connection end is a ground end of the serial-parallel state control circuit.
As shown in fig. 4, in this embodiment, the electronic switch circuit includes a second chip U2 with a model number SM081 and a second diode D2, the second diode D2 is a rectifier diode, a 1 st pin of the second chip U2 is an anode of the electronic switch circuit, a 2 nd pin of the second chip U2 is connected to an anode of the second diode D2, a cathode of the second diode D2 is a cathode of the electronic switch circuit, and a 3 rd pin of the second chip U2 is a control terminal of the electronic switch circuit.
As shown in fig. 4, in this embodiment, the dimming matching circuit includes a third chip U3 with a model number SM088, an eighth resistor R8 and a ninth resistor R9, one end of the eighth resistor R8 is an anode of the dimming matching circuit, the other end of the eighth resistor R8 is connected to the 1 st pin of the third chip U3, the 3 rd pin of the third chip U3 is connected to one end of the ninth resistor R9, the other end of the ninth resistor R9 is a control terminal of the dimming matching circuit, and the 2 nd pin of the third chip U3 is a ground terminal of the dimming matching circuit.
As shown in fig. 4, in this embodiment, the first unidirectional current-carrying circuit includes a third diode D3, the third diode D3 is a rectifier diode, the anode of the third diode D3 is the anode of the first unidirectional current-carrying circuit, the cathode of the third diode D3 is the cathode of the first unidirectional current-carrying circuit, the second unidirectional current-carrying circuit includes a fourth diode D4, the fourth diode D4 is a rectifier diode, the anode of the fourth diode D4 is the anode of the second unidirectional current-carrying circuit, and the cathode of the fourth diode D4 is the cathode of the second unidirectional current-carrying circuit.
As shown in fig. 4, in this embodiment, the rectifying circuit is implemented by using a full-bridge rectifier bridge stack, a 1 st pin of the full-bridge rectifier bridge stack is a live wire input end of the rectifying circuit, a 2 nd pin of the full-bridge rectifier bridge stack is an output end of the rectifying circuit, a 3 rd pin of the full-bridge rectifier bridge stack is a zero line input end of the rectifying circuit, and a 4 th pin of the full-bridge rectifier bridge stack is a ground end of the rectifying circuit.
As shown in fig. 4, in this embodiment, the filter circuit includes a tenth resistor R10 and a second capacitor C2, the second capacitor C2 is an electrolytic capacitor, one end of the tenth resistor R10 is connected to the positive electrode of the second capacitor C2, and the connection end thereof is the positive electrode of the filter circuit, and the other end of the tenth resistor R10 is connected to the negative electrode of the second capacitor C2, and the connection end thereof is the negative electrode of the filter circuit.
As shown in fig. 4, in the embodiment, the first L ED light emitting module is formed by connecting n L ED light emitting units (L ED1-1 to L ED1-n) in series, and the second L ED light emitting module is also formed by connecting n L ED light emitting units (L ED2-1 to L ED2-n) in series, where n is an integer greater than or equal to 1.
Claims (9)
1. A linear L ED lamp circuit with dimming function comprises a rectifying circuit, a first unidirectional pass circuit, a dimming matching circuit and a L ED light-emitting circuit, wherein the rectifying circuit comprises a live wire input end, a zero wire input end, an output end and a ground end, the first unidirectional pass circuit comprises a positive electrode and a negative electrode, the dimming matching circuit comprises a positive electrode, a control end and a ground end, the output end of the rectifying circuit, the positive electrode of the first unidirectional pass circuit and the positive electrode of the dimming matching circuit are connected, the ground end of the rectifying circuit is connected with the ground end of the dimming matching circuit, the linear L ED lamp circuit further comprises a second unidirectional pass circuit, an electronic switch circuit and a series parallel state control circuit, the second unidirectional pass circuit comprises a positive electrode and a negative electrode, the electronic switch circuit comprises a positive electrode, a negative electrode and a control end, the parallel state control circuit comprises a positive electrode, an input end, a first control end, a second control end, a first output end, a second output end and a second output end, a second control end, a second output end and a control end, a third end, a fifth end and a fifth end, a fifth end is connected with a fifth end, a sixth end, a fifth end.
2. A linear L ED lamp circuit with a dimming function as claimed in claim 1, wherein the rectifying circuit is configured to convert a mains ac into a pulsating dc voltage and output the pulsating dc voltage at an output terminal thereof, when an output voltage of the rectifying circuit is less than an on-state voltage of the first L ED light emitting module, the first control terminal and the second control terminal of the series-parallel state control circuit respectively output on-signals, when an output voltage of the dimming matching circuit is on with a constant current, because the output voltage of the rectifying circuit is less than an on-state voltage of the first L ED light emitting module, the output voltage is insufficient to turn on the first L ED light emitting module and the second L ED light emitting module, the first L ED light emitting module and the second L light emitting module do not emit light, when an output voltage of the rectifying circuit is greater than or equal to an on-state voltage of the first L ED light emitting module and less than twice an on-state voltage of the first L ED light emitting module, when the output voltage of the series-parallel state control circuit is on with a constant current, the second control circuit is on-state, when the output voltage of the first L ED light emitting module is greater than an on-state, the second light emitting module, the constant current is equal to the output terminal of the first series-on-off, when the output terminal of the second light emitting module, the constant current is equal to the constant current, the second light emitting module, when the output terminal of the constant current control circuit is equal to the output terminal of the first 8652 ED light emitting module, the constant current control circuit is equal to the constant current control circuit, when the constant current control circuit, the constant current control circuit is equal to the constant current control circuit, the constant current control circuit is equal to the constant current control circuit, when the constant current control circuit is equal to the constant current control circuit, the.
3. A linear L ED lamp circuit with dimming function as claimed in claim 1, wherein the string-parallel status control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first capacitor, a first diode and a first chip of type RM9026, the first diode is a rectifier diode, one end of the first resistor is an input terminal of the string-parallel status control circuit, the other end of the first resistor, one end of the second resistor and the 3 rd pin of the first chip are connected, the 2 nd pin of the first chip is a positive terminal of the string-parallel status control circuit, the 4 th pin of the first chip and one end of the fourth resistor are connected, the 5 th pin of the first chip and one end of the third resistor are connected, the connection terminal of the first resistor is a first control terminal of the string-parallel status control circuit, the other end of the first resistor, the other end of the fourth resistor and one end of the sixth resistor are connected, the connection terminal of the first resistor, the other end of the first resistor and the other end of the first diode are connected, the first control terminal of the first resistor, the other end of the first resistor and the other end of the first diode is a negative terminal of the first resistor, the first resistor and the first resistor are connected, the first control terminal of the first diode and the other end of the first diode and the second resistor, the other end of the first resistor are connected, the first control terminal of the first diode and the first diode-parallel status control terminal of the control circuit, the second resistor is connected, the first control terminal of the first diode and the second resistor, the other terminal of the first diode control circuit, the second resistor is the other terminal of the control terminal of the second resistor, the control.
4. A linear L ED lamp circuit with dimming function as claimed in claim 1, wherein the electronic switch circuit comprises a second chip of type SM081 and a second diode, the second diode is a rectifier diode, pin 1 of the second chip is the positive electrode of the electronic switch circuit, pin 2 of the second chip is connected to the positive electrode of the second diode, the negative electrode of the second diode is the negative electrode of the electronic switch circuit, and pin 3 of the second chip is the control terminal of the electronic switch circuit.
5. A linear L ED lamp circuit with dimming function as claimed in claim 1, wherein the dimming matching circuit includes a third chip with model SM088, an eighth resistor and a ninth resistor, one end of the eighth resistor is the positive electrode of the dimming matching circuit, the other end of the eighth resistor is connected to pin 1 of the third chip, pin 3 of the third chip is connected to one end of the ninth resistor, the other end of the ninth resistor is the control terminal of the dimming matching circuit, and pin 2 of the third chip is the ground terminal of the dimming matching circuit.
6. A linear L ED lamp circuit with dimming function according to claim 1, wherein the first unidirectional current path comprises a third diode, the third diode is a rectifier diode, the anode of the third diode is the anode of the first unidirectional current path, the cathode of the third diode is the cathode of the first unidirectional current path, the second unidirectional current path comprises a fourth diode, the fourth diode is a rectifier diode, the anode of the fourth diode is the anode of the second unidirectional current path, and the cathode of the fourth diode is the cathode of the second unidirectional current path.
7. The linear L ED lamp circuit with dimming function according to claim 1, wherein the rectifying circuit is implemented by a full bridge rectifier, the 1 st pin of the full bridge rectifier is the live wire input terminal of the rectifying circuit, the 2 nd pin of the full bridge rectifier is the output terminal of the rectifying circuit, the 3 rd pin of the full bridge rectifier is the zero wire input terminal of the rectifying circuit, and the 4 th pin of the full bridge rectifier is the ground terminal of the rectifying circuit.
8. A linear L ED lamp circuit with dimming function according to claim 1, wherein the linear L ED lamp circuit further comprises a filter circuit having an anode and a cathode, the anode of the filter circuit being connected to the anode of the first L ED light module, the cathode of the filter circuit being connected to the cathode of the second L ED light module.
9. A linear L ED lamp circuit with dimming function according to claim 8, wherein the filter circuit comprises a tenth resistor and a second capacitor, the second capacitor is an electrolytic capacitor, one end of the tenth resistor is connected to the positive electrode of the second capacitor and the connection end thereof is the positive electrode of the filter circuit, the other end of the tenth resistor is connected to the negative electrode of the second capacitor and the connection end thereof is the negative electrode of the filter circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920658070.4U CN210986524U (en) | 2019-05-09 | 2019-05-09 | Linear L ED lamp circuit with dimming function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920658070.4U CN210986524U (en) | 2019-05-09 | 2019-05-09 | Linear L ED lamp circuit with dimming function |
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| CN210986524U true CN210986524U (en) | 2020-07-10 |
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| CN201920658070.4U Expired - Fee Related CN210986524U (en) | 2019-05-09 | 2019-05-09 | Linear L ED lamp circuit with dimming function |
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| Country | Link |
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