CHUAN SHIH INDUSTRIAL CO., LTD.
|CHUAN SHIH INDUSTRIAL CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20100072914||DIMMING CIRCUIT FOR DISCHARGING LAMP CAPABLE OF TURNING OFF UNDER A LOW POWER CONDITION - A dimming circuit includes a resonant unit, a rectification unit, a half-bridge output unit, a first switch device and a second switch device, and a selection unit. The rectification unit is connected to the resonant unit. The half-bridge output unit includes a first electric-controlled switch and a second electric-controlled switch in series. The first and second switch devices are connected to the first and second electric-controlled switches. The selection unit may turn on the first switch device and the second electric-controlled switch when a potential is rising that turns on the discharging lamp and turn off the second switch device and keep turning on the second switch device when the discharging lamp is lighting. The selection unit further turns on the second switch device to turn off the second electric-controlled switch for turning off the discharging lamp in a low power condition.||03-25-2010|
|20100033099||THREE-LEVEL DIMMING CIRCUIT FOR DISCHARGING LAMP - A three-level dimming circuit for a discharging lamp includes a first contact, a second contact, and a third contact, a first full-wave rectification circuit connected to the first contact and the third contact, and a second full-wave rectification circuit connected to the first contact and the second contact. A selection circuit includes three resistors and a first electrical controlled switch. A half-wave rectification circuit includes a second electrical controlled switch and a third electrical controlled switch in series connection. The three resistors of the election circuit are the main devices for dimming that the present invention has a lower cost and superior competition in the market.||02-11-2010|
|20090236990||ELECTRIC DISCHARGE LIGHT-REGULATION MATCHING... - A electric discharge light regulation matching circuit that operates with filaments includes a resonance unit, a converter unit, a charge circuit, a half-bridge output unit and a lamp. The converter unit is connected to the resonance unit to convert an AC current to a DC current. The charge circuit, which has a charge capacity, is connected to the converter unit. The half-bridge output unit includes two electric control switches in series connection. The lamp, which is connected to the charge circuit, includes a first filament and a second filament therein. The first filament has an end connected to the charge capacity to heat the first filament directly that may prevent a flicker problem of the lamp connecting the electric control switch and may provide functions of recycling power and preventing temperature rising.||09-24-2009|
|20090160351||ELECTRIC DISCHARGE LIGHT-REGULATION MATCHING CIRCUIT - An inexpensive electric discharge light-regulation matching circuit for use with a standard light regulator to regulate the light of an electric discharge without causing flickering is disclosed to include a resonance unit, which comprises a first capacitor and a second capacitor connected in series and a first inductance connected in parallel to the first capacitor and second capacitor, a converter circuit connected to the resonance unit for converting an alternating current into a direct current, a half-bridge output unit, which comprises two electrically controlled switches connected in series to the converter unit with the respective control end respectively connected to a respective oscillation unit, and a voltage feedback unit, which is connected to the half-bridge output unit and the converter unit and comprises a second inductor, a third capacitor and a fourth capacitor that are connected in series. Further, the resonance frequency of the resonance unit is about a predetermined multiple of the working frequency of the half-bridge output unit.||06-25-2009|
Patent applications by CHUAN SHIH INDUSTRIAL CO., LTD.