After the introduction of the characteristics of semiconductor laser diode, the bias current supply of the laser driver and the automatic power control (APC) function were analyzed.
简要介绍了半导体激光器的温度特性的后，分析了激光驱动器偏置电流提供和自动功率控制(APC)功能。
A bootstrap MOS circuit is introduced for bias, which shows a good performance in power supply reject ratio.
偏置电路采用自举基准源，具有良好的电源抑制比。
When there are bias excitation, controllable silicon failure, over current and other failures, KA5 gets absorbed and breaker loop trips by powered on so as for switching off main power supply.
KA5为跳闸报警继电器。当设备产生偏励磁、可控硅故障、过电流等故障时，KA5吸合，断路器分励线圈得电跳闸，切断主电源。
When there are bias excitation, controllable silicon failure, over current and other failures, KA5 gets absorbed and breaker loop trips by powered on so as for switching off main power supply.
KA5为跳闸报警继电器。当设备产生偏励磁、可控硅故障、过电流等故障时，KA5吸合，断路器分励线圈得电跳闸，切断主电源。
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