Control device and control method of communication power supply

• Main Authors: DU DANDAN, WANG XINJUN, WANG HONGLAI
• Format: Patent
• Language: Chinese; English
• Published: 18.06.2014
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention provides a control device and a control method of a communication power supply. The control device comprises a voltage divider, an operational amplifier and an alarm detection circuit, wherein the voltage divider consists of an FET (Field Effect Transistor) and a matched resistor which is connected with the FET in series, and the voltage divider is used for dividing voltage from an auxiliary power supply; the operational amplifier is connected with the voltage divider and is used for controlling the switching on and the switching off of the FET according to the voltage of the FET; the alarm detection circuit is connected with the voltage divider and the operational amplifier and is used for sending an alarm signal indicating that a current communication power supply is in a stop working state when the FET is detected to be switched off. According to the control device and the control method of the communication power supply, provided by the invention, the effect of increasing the reliability of