LED down lamp three-color-changing light dial-up control circuit

Abstract

The utility model discloses a light-emitting diode (LED) down lamp three-color light dial control circuit, which comprises a control chip, a yellow light LED lamp group, a white light LED lamp group and a dialer, a fourth pin of the control chip is connected with the positive electrode end of a yellow light LED lamp set, the positive electrode end of a white light LED lamp set, the positive electrode end of a first electrolytic capacitor, the positive electrode end of a second electrolytic capacitor, the negative electrode end of a first diode and the negative electrode end of a second diode, and the negative electrode end of the yellow light LED lamp set is connected with a first pin, a third pin and a seventh pin of a dialer. The negative electrode end of the white light LED lamp set is connected with the fourth pin, the fifth pin and the eighth pin of the dialer, the negative electrode end of the first electrolytic capacitor is connected with the second pin and the sixth pin of the dialer and one end of the inductor, the other end of the inductor is connected with the fifth pin and the sixth pin of the control chip, and the circuit connection relation is set through dialling of the dialer. LED lamp sets with different lamp colors are made to emit light, the control chip does not need to output lamp color control signals, and the LED down lamp can keep a stable lamp color illumination function.

Description

TECHNICAL FIELD

[0001] The utility model relates to an indoor lighting lamp decoration field, concretely to LED down lamp three variable color light dial code control circuit. BACKGROUND

[0002] In the existing LED down lamp color adjusting circuit, generally, the light color control signal is outputted by the control chip after receiving the instruction to adjust the light color, and the stability of the light color control signal outputted by the control chip is easily affected when the signal interference is received, thereby causing the problem of unstable lighting color. SUMMARY

[0003] The utility model overcomes the insufficient prior art and provides a LED down lamp three variable color light dial code control circuit.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A LED down lamp three variable color light dial code control circuit, characterized in that: including control chip, the first pin of control chip is grounded, the fourth pin of control chip is connected with the positive pole end of yellow light LED lamp group, the positive pole end of white light LED lamp group, the positive pole end of first electrolytic capacitor, the positive pole end of second electrolytic capacitor, the negative pole end of first diode, the negative pole end of second diode respectively, the negative pole end of yellow light LED lamp group is connected with the first pin, the third pin, the seventh pin of dial code ware respectively, the negative pole end of white light LED lamp group is connected with the fourth pin, the fifth pin, the eighth pin of dial code ware respectively, the negative pole end of first electrolytic capacitor is connected with the second pin of dial code ware, the sixth pin of dial code ware, the one end of inductance respectively, the other end of inductance is connected with the fifth pin of control chip, the sixth pin of control chip respectively, the positive pole end of first diode is connected with one AC input end, the negative pole end of third diode, the positive pole end of third diode is grounded, the positive pole end of second diode is connected with another AC input end, the negative pole end of fourth diode respectively, the positive pole end of fourth diode is grounded, the seventh pin of control chip is connected with the one end of resistance, and the other end of resistance is grounded.

[0006] The utility model discloses a kind of LED down lamp three variable color light dial code control circuit as described above, it is characterized in that: the positive pole end of second diode is connected with fuse, and the other end of fuse is connected with AC input end.

[0007] The utility model discloses a kind of LED down lamp three variable color light dial code control circuit as described above, it is characterized in that: control chip is BP2861 series chip.

[0008] The utility model has the advantages that:

[0009] The utility model discloses a dial, through dial dial setting circuit connection relation, makes different lamp color LED lamp group luminescence, need not control chip output lamp color control signal, can make LED down lamp keep stable lamp color lighting function. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 For the utility model circuit diagram. DETAILED DESCRIPTION

[0011] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings.

[0012] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly. In addition, the description of "preferred", "suboptimal" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "preferred", "suboptimal" can explicitly or implicitly include at least one of the features.

[0013] As Figure 1As shown, an LED downlight three-color light DIP switch control circuit is characterized by: including a control chip 1, the first pin of the control chip 1 being grounded, the fourth pin of the control chip 1 being connected to the positive terminals of the yellow LED group 2, the white LED group 3, the first electrolytic capacitor 4, the second electrolytic capacitor 5, the first diode 6, and the second diode 7, respectively; the negative terminals of the yellow LED group 2 being connected to the first, third, and seventh pins of the DIP switch 8, respectively; and the negative terminals of the white LED group 3 being connected to the fourth, fifth, and eighth pins of the DIP switch 8, respectively. The negative terminal of the first electrolytic capacitor 4 is connected to the second and sixth pins of the DIP switch 8 and one end of the inductor 9. The other end of the inductor 9 is connected to the fifth and sixth pins of the control chip 1. The positive terminal of the first diode 6 is connected to an AC input terminal and the negative terminal of the third diode 10, with the positive terminal of the third diode 10 grounded. The positive terminal of the second diode 7 is connected to another AC input terminal and the negative terminal of the fourth diode 11, with the positive terminal of the fourth diode 11 grounded. The seventh pin of the control chip 1 is connected to one end of the resistor 12, with the other end of the resistor 12 grounded. The control chip 1 is a BP2861 series chip, a high-precision LED constant current driver chip, mainly used in non-isolated step-down LED driver power supplies. In practical applications, the circuit connection relationship is set by the DIP switch 8, so that the control chip 1 can control the yellow LED light group 2 to emit light alone, the white LED light group 3 to emit light alone, or the yellow LED light group 2 and the white LED light group 3 to emit light together, which can provide three lighting colors without the need for the control chip 1 to output a light color control signal to adjust the light color of the LED downlight, thus enabling the LED downlight to maintain a stable light color illumination function.

[0014] like Figure 1 As shown, the positive terminal of the second diode 7 is connected to the fuse 13, and the other end of the fuse 13 is connected to the AC input terminal to realize the overcurrent protection function.

[0015] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A three-color LED downlight DIP switch control circuit, characterized in that: It includes control chip (1), the first pin of control chip (1) is grounded, the fourth pin of control chip (1) is connected with the positive terminal of yellow light LED lamp group (2), the positive terminal of white light LED lamp group (3), the positive terminal of first electrolytic capacitor (4), the positive terminal of second electrolytic capacitor (5), the negative terminal of first diode (6), the negative terminal of second diode (7) respectively, the negative terminal of yellow light LED lamp group (2) is connected with the first pin, the third pin, the seventh pin of dial (8) respectively, the negative terminal of white light LED lamp group (3) is connected with the fourth pin, the fifth pin, the eighth pin of dial (8) respectively, the negative terminal of first electrolytic capacitor (4) is connected with the second pin of dial (8), the sixth pin of dial (8), one end of inductor (9) respectively, the other end of inductor (9) is connected with the fifth pin of control chip (1), the sixth pin of control chip (1) respectively, the positive terminal of first diode (6) is connected with one AC input terminal, the negative terminal of third diode (10) respectively, the positive terminal of third diode (10) is grounded, the positive terminal of second diode (7) is connected with another AC input terminal, the negative terminal of fourth diode (11) respectively, the positive terminal of fourth diode (11) is grounded, the seventh pin of control chip (1) is connected with one end of resistor (12), the other end of resistor (12) is grounded.

2. The LED down lamp three-variable color light dial code control circuit according to claim 1, characterized in that: The positive terminal of second diode (7) is connected with fuse (13), the other end of fuse (13) is connected with AC input terminal.

3. The LED down lamp three-variable color light dial code control circuit according to claim 1, characterized in that: Control chip (1) is BP2861 series chip.

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