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	Laser diode driver circuit
	FAHEY, WILLIAM D.; NETOFF, THEODORE J.; DAO, GIANG V.; SAASTA, RICHARD
	1995-12-05
著作权人	QUANTIC INDUSTRIES, INC.
专利号	US5473623
国家	美国
文献子类	授权发明
其他题名	Laser diode driver circuit
英文摘要	The invention relates to providing a reliable means for controlling a laser diode in an initiator for starting a pyrotechnic reaction in an ordnance. The circuit has an array of capacitors to tune the coupling of the input signal to provide for more efficient power transfer from an electrical energy system. The circuit contains a full wave rectifier to provide DC power to operate the circuit. The circuit also contains a two stage current amplifier that is controlled by a differential amplifier. The differential amplifier compares a voltage proportional to the current flowing through the controlled laser diode with a reference voltage. The differential amplifier controls the current amplifier to limit the current that can pass through the laser diode. The circuitry that provides the reference voltage has the ability to drive the reference voltage to zero when the input signal is removed or is too low to drive the circuit properly. This prohibits current spikes from developing in the laser diode when the circuit is shutting down. The reference voltage circuitry also turns the laser diode on relatively slowly to allow the current control circuitry to become stable. This prevents damaging current overshoots that otherwise could occur at the time the laser diode is turned on.
公开日期	1995-12-05
申请日期	1993-12-17
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/35033]
专题	半导体激光器专利数据库
作者单位	QUANTIC INDUSTRIES, INC.
推荐引用方式 GB/T 7714	FAHEY, WILLIAM D.,NETOFF, THEODORE J.,DAO, GIANG V.,et al. Laser diode driver circuit. US5473623. 1995-12-05.

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