Driving circuit and lamp

• Main Authors: LIAO YUANLONG, CAI RONGSHENG, SUN JIANFEI, ZHONG LIANGUANG
• Format: Patent
• Language: Chinese; English
• Published: 21.10.2022
• Subjects: ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY

The invention provides a driving circuit, which comprises a bridge type rectification filtering module, a constant current driving module, a power adjusting module, a slow-start gradually-brightening time adjustable control module and a rectification filtering output module, and is characterized in that a slow-start gradually-brightening time adjustable control signal is generated and output through the slow-start gradually-brightening time adjustable control module; generating and outputting a power adjustment signal through the power adjustment module; then the constant current driving module adjusts the maximum power threshold value of the load current according to the power adjustment signal, and adjusts the conduction angle of an internal MOS tube according to the slow-start and gradual-lightening time adjustable control signal, so that the load current changes from zero to the maximum value; and finally, the rectification filtering output module carries out filtering processing on the load current and p