Title:
LED DRIVING CIRCUIT AND LED LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/214104
Kind Code:
A1
Abstract:
An LED driving circuit, comprising a rectifier circuit, a filter circuit, and a power supply circuit. The rectifier circuit converts an alternating current input into a direct current input. The filter circuit filters the direct current input obtained by conversion to obtain pulsating direct current. The power supply circuit comprises an on-off device, an energy storage device, a constant current device, a switching control device, and a protection device. One side of the on-off device is connected to the filter circuit, and the other side is connected to the energy storage device and the switching control device; the switching control device is connected to the protection device and coupled to the energy storage device; the energy storage device is connected to the constant current device; the output of the constant current device provides a rated voltage for a load device. When the on-off device is switched to charge the constant current device with the pulsating direct current of the filter circuit, the protection device is used for instantaneously switching off the on-off device as an input perturbation occurs in the alternating current input.
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Inventors:
TAN NICOL (CN)
HUANG ERIC (CN)
LAN FRANKS (CN)
LIU LEO (CN)
HUANG ERIC (CN)
LAN FRANKS (CN)
LIU LEO (CN)
Application Number:
PCT/CN2017/085957
Publication Date:
November 29, 2018
Filing Date:
May 25, 2017
Export Citation:
Assignee:
SHENZHEN H&T INTELLIGENT LIGHTING CO LTD (CN)
International Classes:
H05B44/00; H05B37/02
Foreign References:
| CN205546049U | 2016-08-31 | |||
| CN104394618A | 2015-03-04 | |||
| CN106301013A | 2017-01-04 | |||
| CN105682287A | 2016-06-15 |
Attorney, Agent or Firm:
SHENZHEN LIUJIA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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