Patent ID: 8810223

Claim:
A method for supplying power to a 300 PIN MSA 40 Gb TRANSPONDER, comprising: a power supply control module supplying power to the 300 PIN MSA 40 Gb TRANSPONDER through a APS Digital pin of the 300 PIN MSA 40 Gb TRANSPONDER; a reference voltage terminal of the power supply control module connecting to a APS Sense pin of the 300 PIN MSA 40 Gb TRANSPONDER by a resistor R 3 , connecting to a APS Set pin of the 300 PIN MSA 40 Gb TRANSPONDER by a resistor R 2 and connecting to a bias voltage terminal of itself by a resistor R 4 , wherein the resistance values of the resistors R 2 , R 3 and R 4 are determined according to a preset grounding resistance of the APS Set pin and a specified input voltage of the APS Digital pin.