Title:
SIGNAL CONVERSION CIRCUIT, DIMMING LED DRIVING SOURCE AND LAMP
Document Type and Number:
WIPO Patent Application WO/2019/024877
Kind Code:
A1
Abstract:
Provided are a signal conversion circuit, a dimming LED driving source and a lamp, relating to the field of illumination. The signal conversion circuit comprises a reference source, a PWM acquisition circuit, a push-pull circuit and a charging and discharging circuit. The reference source is used for providing a supply voltage; the PWM acquisition circuit is connected to a PWM output port, for acquiring a PWM signal; the push-pull circuit is connected to the reference source and the PWM acquisition circuit, for realising line conversion according to the PWM signal; and the charging and discharging circuit is connected to the push-pull circuit, for realising charging or discharging according to the conversion of the push-pull line, thereby adjusting a reference voltage by means of the PWM signal. Since no sampling operational amplifier with a complex scheme is used in the circuit structure of the present invention, the present invention has simple lines and can effectively reduce the cost of the circuit.
Inventors:
YANG WEN (CN)
Application Number:
PCT/CN2018/098098
Publication Date:
February 07, 2019
Filing Date:
August 01, 2018
Export Citation:
Assignee:
SUZHOU OPPLE LIGHTING CO LTD (CN)
OPPLE LIGHTING CO LTD (CN)
OPPLE LIGHTING CO LTD (CN)
International Classes:
H05B44/00
Foreign References:
| US4313065A | 1982-01-26 | |||
| CN101771343A | 2010-07-07 | |||
| CN202340333U | 2012-07-18 | |||
| US20050269956A1 | 2005-12-08 | |||
| CN107426871A | 2017-12-01 | |||
| CN207135326U | 2018-03-23 |
Attorney, Agent or Firm:
WISEAST INTELLECTUAL PROPERTY LAW FIRM (CN)
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