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	Diode drive current source
	ORTIZ JOE A
	1996-06-06
著作权人	HUGHES AIRCRAFT COMPANY
专利号	CA2159842A1
国家	加拿大
文献子类	发明申请
其他题名	Diode drive current source
英文摘要	A current source (20) that uses a regulated constant current power source (21)to supply current to drive a load (13), and the load current is controlled by shuntswitches (34). If a plurality of loads (13) utilize less than 50% duty factor, then onecurrent source (20) can drive N multiple dissimilar impedance loads (13), each at100%/N duty factor. The current source (20) includes a power converter (21) coupledbetween the power source (11) and the load(s) (13) for providing pulsed currentthereto. A current sensor (32) is provided for sensing current flowing through theloads (13). A controller (26) is coupled between the sensor (32) and the powerconverter (21) for regulating the amplitude of the output current supplied to the loads(13). A shunt switch (34) is coupled across the loads (13), and a duty factor controller(35) is coupled to the shunt switch (34) for setting the duty factor of the shunt switch(34). A laser drive circuit (10), or driving light emitting diode arrays (13) is alsodisclosed that include a plurality of the current sources (20). alternatively, if the dutyfactor is sufficiently low, one current source (20) may be used to drive a plurality ofarrays (13).
公开日期	1996-06-06
申请日期	1995-10-04
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/50995]
专题	半导体激光器专利数据库
作者单位	HUGHES AIRCRAFT COMPANY
推荐引用方式 GB/T 7714	ORTIZ JOE A. Diode drive current source. CA2159842A1. 1996-06-06.

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