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Constant-voltage and constant-current light-emitting diode (LED) bulb lamp

An LED bulb lamp, constant voltage and constant current technology, which is applied in the layout of electric lamp circuits, lighting devices, light sources, etc., can solve the problems of complex circuit structure, many failure rates, and many electronic components, and achieves simple structure and improved power saving. rate effect

Inactive Publication Date: 2015-12-09
黄鹂
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] The current LED bulb lamps all use RC step-down or pulse constant current driving power. The problem with these driving power is that the circuit structure is complicated, and the electronic components used are many, causing a high failure rate; and the driver uses many power consumption. Energy-saving resistor elements consume a certain amount of electric energy, reducing the energy-saving rate of LED bulbs

Method used

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  • Constant-voltage and constant-current light-emitting diode (LED) bulb lamp

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Embodiment Construction

[0006] As shown in the attached figure, R1 and C1 are resistance-capacitance step-down circuits, and C1 is a polyester capacitor with a withstand voltage of more than 400V. R1 is a bleeder resistor with a large resistance and low power. The use of the resistance-capacity step-down circuit has the function of constant current power supply, and the constant current is used to supply the LED working power. B is a single-phase bridge rectifier, which converts the stepped-down alternating current into pulsating direct current. Inductor L and capacitor C2 form a compound filter circuit. One function is to turn the pulsating DC into a smoother DC and send it to the next stage circuit; The power factor of the bulb.

[0007] As shown in the attached figure, the IC and peripheral circuits form a high-voltage input three-terminal voltage regulator circuit, in which R3, D1, D2, T1, and T2 form a series step-down circuit. When D1 and D2 use double-terminal voltage regulators, the voltage...

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Abstract

The invention discloses a constant-voltage and constant-current light-emitting diode (LED) bulb lamp. Constant current is provided to a light-emitting diode (LED) by the constant-current characteristic of a resistance-capacitance step-down circuit; and constant output voltage is provided for the LED by a high-input voltage three-input circuit, so that the LED bulb lamp has the working characteristics of constant voltage and constant current; and the durability of the LED bulb lamp is ensured.

Description

technical field [0001] The invention relates to a constant voltage and constant current LED bulb lamp. Background technique [0002] The current LED bulb lamps all use RC step-down or pulse constant current driving power. The problem with these driving power is that the circuit is complex and uses a lot of electronic components, causing a high failure rate; Energy-saving resistance elements consume a certain amount of electric energy, which reduces the energy-saving rate of LED bulbs. Contents of the invention [0003] The invention discloses an LED bulb lamp with constant voltage and constant current, and discloses an LED bulb lamp with constant voltage and constant current power supply functions. components, so that the electric energy absorbed by the lamp from the power supply can be converted into light energy to the maximum extent, which improves the power saving rate of the LED. [0004] A constant-voltage and constant-current LED bulb lamp is composed of a circuit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 黄鹂
Owner 黄鹂
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