US Patent No. 10,172,199

LIGHT-ACTUATED WIDE VOLTAGE RANGE LED LAMP DRIVER CIRCUIT


Patent No. 10,172,199
Issue Date January 01, 2019
Title Light-actuated Wide Voltage Range Led Lamp Driver Circuit
Inventorship Jianrong Zhu, Taizhou (CN)
Assignee Taizhou JiaoGuang Lighting Co., Ltd., Taizhou (CN)

Claim of US Patent No. 10,172,199

1. A light-actuated wide voltage range LED lamp driver circuit, comprising:a rectifier module connecting mains and two LED modules, the two LED modules consisting of a first LED module and a second LED module;
a detection module capable of detecting whether an input voltage is in a low voltage range or in a high voltage range;
a module configured to switch two LED modules in series or in parallel, the module capable of controlling the two LED modules to work at a rated power;
output terminals of the rectifier module connected to the detection module and the module;
a voltage set value of the module, the voltage set value configured to switch the two LED lamps into series connection;
a first transistor of the detection module; and
a second transistor of the detection module;
wherein the detection module and the two LED modules connected to the module;
wherein the module outputs a reference voltage to the first transistor and the second transistor;
wherein the rectifier module outputs a detection voltage to the first transistor and the second transistor;
wherein at the low voltage range, both the first transistor and the second transistor are turned off, making the two LED modules connected in parallel; and
wherein at the high voltage range, both the first transistor and the second transistor are turned on, making the two LED modules connected in series.