Title:
DRIVERLESS ELECTRO-OPTICAL DRIVE CONSTANT CURRENT CIRCUIT, INTEGRATED CIRCUIT, AND CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/072001
Kind Code:
A1
Abstract:
The present invention relates to the technical field of semiconductor integrated circuits, and relates in particular to a driverless electro-optical drive constant current circuit, an integrated circuit, and a control system, wherein the electro-optical drive constant current circuit comprises an operational amplifier, four transistors, two electro-optical diodes, and one resistor. The present invention has the following advantages: the circuit uses a constant current circuit to provide to a connected load a working environment having automatic gain control, constant current, and constant voltage, while having a relatively high power supply rejection ratio, and solving the light efficiency problem wherein changes to an input voltage lead to changes to the input power of the entire system, thereby affecting system efficiency.
Inventors:
ZHOU YANMAN (CN)
Application Number:
PCT/CN2018/098444
Publication Date:
April 18, 2019
Filing Date:
August 03, 2018
Export Citation:
Assignee:
ZHOU YANMAN (CN)
International Classes:
G05F1/56
Foreign References:
| CN107643783A | 2018-01-30 | |||
| KR20100045342A | 2010-05-03 | |||
| CN204090252U | 2015-01-07 | |||
| US7122971B2 | 2006-10-17 | |||
| CN202679742U | 2013-01-16 |
Attorney, Agent or Firm:
DONGGUAN XING BANG INTELLECTUAL PROPERTY FIRM (CN)
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