阅读说明：本技术 一种解决非隔离灯具0%调光亮度微亮问题的电路 (Circuit for solving 0% dimming brightness and micro-brightness problem of non-isolated lamp ) 是由 李隆 朱生鑫 于 2021-01-23 设计创作，主要内容包括：本发明公开了一种解决非隔离灯具0％调光亮度微亮问题的电路,包括供电电路和控制电路,且所述供电电路和控制电路连接到LED灯珠组,所述LED灯珠组包括呈矩阵排布的多个LED灯珠,分为横向和纵向排布,每组横向排布的所述LED灯珠并联,且并联有电阻,每组纵向排布的所述LED灯珠串联。本发明构思新颖、设计合理,且便于使用,本发明通过设计了一种电路来解决微弱的漏电流回路LED灯珠微亮进而影响调光控制效果的问题,效果明显,方便好用。(The invention discloses a circuit for solving the problem of 0% dimming brightness and micro-brightness of a non-isolated lamp, which comprises a power supply circuit and a control circuit, wherein the power supply circuit and the control circuit are connected to an LED lamp bead group, the LED lamp bead group comprises a plurality of LED lamp beads arranged in a matrix manner and is divided into transverse arrangement and longitudinal arrangement, each group of transversely arranged LED lamp beads is connected in parallel and is connected in parallel with a resistor, and each group of longitudinally arranged LED lamp beads is connected in series. The LED dimming control circuit is novel in concept, reasonable in design and convenient to use, solves the problem that the LED lamp beads in a weak leakage current loop are slightly bright so as to influence the dimming control effect through the design of the circuit, and is obvious in effect, convenient and easy to use.)

1. The utility model provides a solve circuit that non-isolation lamps and lanterns 0% adjust luminance little bright problem which characterized in that: including supply circuit and control circuit, just supply circuit and control circuit are connected to LED lamp pearl group, LED lamp pearl group is divided into transversely and vertically arranging including being a plurality of LED lamp pearls that the matrix was arranged, and every group is transversely arranged LED lamp pearl is parallelly connected, and has parallelly connected resistance, and every group is vertically arranged LED lamp pearl is established ties.

2. The circuit of claim 1 for solving the problem of dim 0% dimming brightness of a non-isolated lamp, wherein: the power supply circuit comprises a live wire and a zero line, the live wire and the zero line are connected into a rectifying circuit and then connected into an inductor, and the live wire and the zero line are connected into a diode and then connected into the anode of the LED lamp bead group.

3. The circuit for solving the problem of dim 0% dimming brightness of a non-isolated lamp according to claim 2, wherein: the rectifying circuit is composed of four diodes which are connected end to end.

4. The circuit of claim 3, wherein the circuit is configured to solve the problem of dim 0% dimming brightness of a non-isolated lamp, and further configured to: the rectification circuit is connected to the cathode of the LED lamp bead group, and a first capacitor is connected between the anode and the cathode of the LED lamp bead group.

5. The circuit of claim 4, wherein the circuit is configured to solve the problem of dim 0% dimming brightness of a non-isolated lamp, and further configured to: the zero line is connected to the shell of the lamp and grounded.

6. The circuit of claim 4, wherein the circuit is configured to solve the problem of dim 0% dimming brightness of a non-isolated lamp, and further configured to: the control circuit comprises a dimming module and a power chip and is connected to the anode and the cathode of the LED lamp bead group.

7. The circuit of claim 5, wherein the circuit is configured to solve the problem of dim 0% dimming brightness of a non-isolated lamp, and further configured to: and a second capacitor is connected between the zero line and the shell of the lamp.

8. The circuit for solving the problem of dim 0% dimming brightness of a non-isolated lamp according to claim 7, wherein: and a third capacitor is connected between the live wire and the shell of the lamp.

Technical Field

The invention relates to the technical field of lamps, in particular to a circuit for solving the problem of 0% dimming brightness and micro-brightness of a non-isolated lamp.

Background

Non-isolated dimming light fixtures are a common light fixture with its own circuitry for powering and dimming. When the dimming brightness of the non-isolated dimming power supply is 0%, the lamp beads should be in an off state, but junction capacitors exist between the lamp beads and the aluminum substrate, between the copper-clad layer of the aluminum substrate and the aluminum-clad layer, and between the lamp beads and the aluminum substrate, and between the lamp beads and the ground wire, a weak leakage current loop is formed, so that the LED lamp beads are slightly bright, and the dimming control effect is influenced. Improvements in the circuitry are therefore needed to address this problem.

Disclosure of Invention

In view of the above drawbacks in the prior art, the present invention provides a circuit for solving the problem of 0% dimming brightness and slight brightness of a non-isolated lamp, which satisfies a better use effect, and the scheme is as follows:

the utility model provides a solve circuit that 0% of non-isolation lamps and lanterns adjusted luminance is little bright problem, includes supply circuit and control circuit, just supply circuit and control circuit are connected to LED lamp pearl group, LED lamp pearl group is divided into transversely and vertically arranges including being a plurality of LED lamp pearls that the matrix was arranged, and every group is transversely arranged LED lamp pearl is parallelly connected, and parallelly connected has a resistance, and every group is vertically arranged LED lamp pearl is established ties.

Furthermore, the power supply circuit comprises a live wire and a zero line, the live wire and the zero line are connected into a rectifying circuit and then connected into an inductor, and the live wire and the zero line are connected into a diode and then connected into the anode of the LED lamp bead group.

Further, the rectifying circuit is composed of four diodes which are connected end to end.

Further, the rectifying circuit is connected to the cathode of the LED lamp bead group, and a first capacitor is connected between the anode and the cathode of the LED lamp bead group.

Further, the zero line is connected to the shell of the lamp and grounded.

Furthermore, the control circuit comprises a dimming module and a power chip, and is connected to the anode and the cathode of the LED lamp bead group.

Further, a second capacitor is connected between the zero line and the shell of the lamp.

Further, a third capacitor is connected between the live wire and the shell of the lamp.

Has the advantages that: the LED dimming control circuit is novel in concept, reasonable in design and convenient to use, solves the problem that the LED lamp beads in a weak leakage current loop are slightly bright so as to influence the dimming control effect through the design of the circuit, and is obvious in effect, convenient and easy to use.

Drawings

Fig. 1 is a schematic circuit diagram according to an embodiment of the invention.

Detailed Description

The invention is further described in the following detailed description with reference to the drawings and examples as preferred embodiments:

referring to fig. 1, a circuit for solving the problem of 0% dimming brightness and slight brightness of a non-isolated lamp comprises a power supply circuit and a control circuit, wherein the power supply circuit and the control circuit are connected to an LED lamp bead group, the LED lamp bead group comprises a plurality of LED lamp beads arranged in a matrix and is divided into a horizontal arrangement and a vertical arrangement, each group of LED lamp beads is arranged in a horizontal manner, each group of LED lamp beads is connected in parallel and is connected in parallel with a resistor R, and each group of LED lamp beads is arranged in a vertical manner and is connected in series. Furthermore, the power supply circuit comprises a live wire and a zero line, the live wire and the zero line are connected into a rectifying circuit and then connected into an inductor, and the live wire and the zero line are connected into a diode and then connected into the anode of the LED lamp bead group. Further, the rectifying circuit is composed of four diodes which are connected end to end. Further, the rectifying circuit is connected to the cathode of the LED lamp bead group, and a first capacitor C1 is connected between the anode and the cathode of the LED lamp bead group. Further, the zero line is connected to the shell of the lamp and grounded. Furthermore, the control circuit comprises a dimming module and a power chip, and is connected to the anode and the cathode of the LED lamp bead group. Further, a second capacitor C2 is connected between the zero line and the shell of the lamp. Further, a third capacitor C3 is connected between the live wire and the outer shell of the lamp.

As shown in fig. 1, the bead and aluminum-based plate capacitor at a point a in the figure and the copper-clad and aluminum-based layer junction capacitor of the aluminum substrate (at C4 in the figure). In the figure, transverse LED lamps are connected in parallel to form a group, and then connected with a resistor R in parallel; in the non-isolated circuit, the fire wire has an induced voltage to the ground, so a weak current can be generated, a resistor is connected in parallel to play a shunting role, the current passes through the resistor R to reduce the current of the LED branch, and the LED lamp bead is prevented from forming a weak leakage current loop from the lamp bead to the shell to the ground wire, so that the LED lamp bead is slightly bright and the dimming control effect is not influenced. As shown in figure 1, each group of vertical LED lamps are transversely connected in series, so that the effect that a single LED lamp is damaged without influencing other LED lamps on one branch can be realized, and the LED lamp can be used as usual.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.