Title:
INPUT DETECTION PROTECTION CIRCUIT AND ALTERNATING CURRENT ELECTRICAL BALLAST FOR HID LAMP
Document Type and Number:
WIPO Patent Application WO/2019/080359
Kind Code:
A1
Abstract:
Provided by the present invention are an input detection protection circuit and an alternating current electrical ballast for a high-intensity discharge (HID) lamp, wherein the input detection protection circuit comprises: a power input loop, an input voltage acquisition loop, a relay pull-in loop, a power factor correction (PFC) circuit, and a microcomputer unit (MCU) chip. The input detection protection circuit of the present invention may provide protection against various abnormalities when an ultra high voltage is inputted, such as the phase of a grid input dropping, the wrong line being connected during installation, a momentary high surge voltage during power on and off, and continuous lightning pulses. The input detection protection circuit of the present invention acquires the voltage for charging a rear capacitor so as to effectively reduce the surge current and an impact according to a set internal pulled-in relay, while monitoring the input voltage; protection may be provided when voltage is ultra high and ultra low, and the relay is disconnected when an abnormality occurs so as to provide a standby current to the MCU by means of the PTC and indicate the abnormality.
More Like This:
| WO/2007/110800 | OPERATING A GAS DISCHARGE LAMP |
| WO/2017/139707 | TIMER LIGHT LEVEL SETTING SYSTEM AND PROCESS |
| WO/2007/045599 | METHOD FOR OPERATING A GAS DISCHARGE LAMP |
Inventors:
QIU MING (CN)
JIN YUXING (CN)
DENG GUANXING (CN)
JIN YUXING (CN)
DENG GUANXING (CN)
Application Number:
PCT/CN2017/120349
Publication Date:
May 02, 2019
Filing Date:
December 29, 2017
Export Citation:
Assignee:
LUMLUX CORP (CN)
International Classes:
H05B41/292; H05B41/288
Foreign References:
| CN201171242Y | 2008-12-24 | |||
| CN2688016Y | 2005-03-23 | |||
| CN103427618A | 2013-12-04 | |||
| CN201674714U | 2010-12-15 | |||
| EP0349707A1 | 1990-01-10 |
Attorney, Agent or Firm:
SUZHOU GUOCHENG PATENT AGENCY CO., LTD (CN)
Download PDF: