Direct current fan speed regulation control circuit

• Main Authors: YAO ZHAOHUI, JIANG HAO, LIU ZHILI, GAO XIANG, LIU YUANHUI
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2018
• Subjects: BLASTING; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model discloses a direct current fan speed regulation control circuit, including control circuit, feedback circuit, fan drive circuit and duty cycle regulating circuit, control circuit's output passes through the duty cycle and adjusts the input of circuit connection to fan drive circuit, fan drive circuit's feedback end is connected to control circuit's input through feedback circuit.The utility model discloses an adopt feedback circuit and the duty cycle regulating circuit of opto -coupler chip, completion fan speed's negative feedback regulation has guaranteed fan speed regulation's real -time, accuracy and stability through closed -loop control. The utility model relates to a but direct current fan speed regulation control circuit wide application in electronic circuit field. 本实用新型公开了种直流风机调速控制电路，包括有控制电路、反馈电路、风机驱动电路和占空比调节电路，所述控制电路的输出端通过占空比调节电路连接至风机驱动电路的输入端，所述风机驱动电路的反馈端通过反馈电路连接至控制电路的输入端。本实用新型通过采用光耦芯片的反馈电路和占空比调节电路，完成风机速度的负反馈调节，通过闭环控制保证了风机转速调节的实时性、准确性以及稳定性。本实用新型作为种直流风机调速控制电路可广泛应用于电子电路领域。