公开(公告)号：US08754594B2

公开(公告)日：2014-06-17

申请号：US13647324

申请日：2012-10-08

Applicant: Switch Bulb Company, Inc.

Inventor： Ronald J. Lenk ,  John D. Grainger

IPC: H05B37/02

CPC classification number: F21K9/135 ,  F21K9/232 ,  F21V29/70 ,  H05B33/0815 ,  Y02B20/341

Abstract: A light-emitting diode (LED) bulb has an LED within a shell. The LED bulb includes a driver circuit for providing current to the LED. The drive circuit has a thermal protection circuit, which includes a first positive thermal coefficient thermistor with a first switching temperature connected in series with a second positive thermal coefficient thermistor with a second switching temperature. The driver circuit includes a switch-mode power supply (SMPS) controller with an input pin and an output pin. The thermistors are connected to the input pin. When either thermistor temperature is above the respective switching temperatures, the thermal protection circuit causes the SMPS controller to produce a signal with a second duty cycle on the output pin. When both thermistor temperatures are below the respective switching temperatures, the thermal protection circuit causes the SMPS controller to produce a signal with a first duty cycle on the output pin.

Abstract translation: 发光二极管（LED）灯泡内有LED。 LED灯泡包括用于向LED提供电流的驱动电路。 驱动电路具有热保护电路，该热保护电路包括具有第一开关温度的第一正热系数热敏电阻，其与第二开关温度的第二正热系数热敏电阻串联。 驱动器电路包括具有输入引脚和输出引脚的开关电源（SMPS）控制器。 热敏电阻连接到输入引脚。 当热敏电阻温度高于相应开关温度时，热保护电路使SMPS控制器在输出引脚上产生第二个占空比的信号。 当两个热敏电阻温度都低于相应的开关温度时，热保护电路使SMPS控制器在输出引脚上产生第一个占空比的信号。

公开(公告)号：US09049761B2

公开(公告)日：2015-06-02

申请号：US13912143

申请日：2013-06-06

Applicant: Switch Bulb Company, Inc.

Inventor： Stanley Canter ,  John D. Grainger

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0815

Abstract: A light-emitting diode (LED) bulb has a shell and a base attached to the shell. An LED is within the shell. A driver circuit provides current to the LED. The driver circuit has a power factor control circuit that includes a tracking circuit configured to produce a tracking signal indicative of the voltage of the supply line. The power factor control circuit also includes a switch-mode power supply (SMPS) controller having an input pin and an output pin. The tracking circuit is connected to the input pin. Based on the signal at the input pin, the SMPS controller is configured to change a frequency of an output signal on the output pin.

Abstract translation: 发光二极管（LED）灯泡具有外壳和连接到外壳的底座。 一个LED在壳内。 驱动电路为LED提供电流。 驱动器电路具有功率因数控制电路，其包括被配置为产生指示供电线的电压的跟踪信号的跟踪电路。 功率因数控制电路还包括具有输入引脚和输出引脚的开关模式电源（SMPS）控制器。 跟踪电路连接到输入引脚。 基于输入引脚上的信号，SMPS控制器配置为改变输出引脚上的输出信号的频率。