Inventor

LEE CHING-RAN

TW19 patents

⚠️ This page may combine multiple inventors who share the name “LEE CHING-RAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LEE CHING-RAN

IND TECH RES INST

Preheat control device for modulating voltage of gas-discharge lamp

Single-stage electronic ballast device

Direct current conversion circuit

Linear driving module

LED driving circuit and method

Voltage converter with reduced inductive energy conversion

Passive power factor correction circuit, electronic device applying the same and operation methods thereof

DC conversion circuit

Dimming system and operating method thereof

TSAI WEN-TIEN

Buck power factor correction system

Active buck power factor correction device

Method for identifying rated power of HID lamp

HUANG YAO-TE

Lighting control systems and methods

Constant power control apparatus and control method thereof

CHEN PO-YEN

LED mixture control device and controlling method thereof

Solar-powered wireless communication module with daylight intensity measurement

LEE LI-LING

Method of controlling a ballast for a high intensity discharge lamp and related system

CHEN YUNG-CHUAN

Light source driving device including a switching current adjustment circuit

CHEN SUI-TSUNG

Lamp control system, lamp power-saving system and method therefor