简介一种以锗雪崩光电二极管(APD)为光电转换器件的探测器电路的工作原理，详细介绍电路各组成部分的设计要求和设计要点。

The operation principle of a detecting circuit in which avalanche photo-diode (APD) is used as photoelectric conversion device and the every part of the circuit are presented.

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本系统属于主动型报警系统，由光电二极管、发光二极管、放大电路及报警电路组成。

This type of system is active warning systems from photodiode, luminous diode, the circuit and was enlarged circuit.

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设计研制了一种集成光电探测器系统，它将光电二极管阵列及信号读出电路集成在同一硅芯片上。

An integrated photodetector system is designed and manufactured, in which the photodetector array and the read-out circuits are integrated on the same silicon chip.

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