Abstract: An inductor skeleton structure includes a pedestal and a main winding part. The pedestal includes a base, a fixing part and an auxiliary winding part, the fixing part is disposed on the base, and the auxiliary winding part is extended away from the base from a side surface; the main winding part has a main winding groove; the main winding part is fixed on a side of the base by the fixing part; the auxiliary winding part is used for winding an auxiliary coil capable of covering at least a portion of the welding surface; and the auxiliary coil is flush with or beyond the fitting surface.

Abstract: The disclosure disclose a control circuit and a lighting device, relates to a technical field of illumination. In the power-on process of the control circuit, the voltage input to the driving input terminal of the constant current driving module rises slowly, resulting in the current overshoot phenomenon of the light source load. In the control circuit disclosed by the present disclosure, because the output current of the first regulation output terminal is positively correlated with the output voltage of the voltage limiting terminal, and the output current of the second regulation output terminal is negatively correlated with the output voltage of the voltage limiting terminal, during the power-on process of the control circuit, that is, during the voltage at the voltage limiting terminal is changed from zero to the first threshold value, the current input to the driving input terminal can be relatively constant.

Abstract: Examples of the present disclosure provides a BUCK topological circuit for power supply including a rectification circuit, a first filter energy-storage circuit, a step-down constant-current driver chip, an output current setting circuit, a freewheeling circuit, a transformer, and a second filter energy-storage circuit. An external power supply capacitor is not required in the step-down constant-current driver chip.

Abstract: The disclosure disclose a control circuit and a lighting device, relates to a technical field of illumination. In the power-on process of the control circuit, the voltage input to the driving input terminal of the constant current driving module rises slowly, resulting in the current overshoot phenomenon of the light source load. In the control circuit disclosed by the present disclosure, because the output current of the first regulation output terminal is positively correlated with the output voltage of the voltage limiting terminal, and the output current of the second regulation output terminal is negatively correlated with the output voltage of the voltage limiting terminal, during the power-on process of the control circuit, that is, during the voltage at the voltage limiting terminal is changed from zero to the first threshold value, the current input to the driving input terminal can be relatively constant.

Abstract: The present disclosure provides a combinational circuit and a control circuit. The combinational circuit is applied to an LED drive circuit and includes a detection module and a drive and logic conversion module connected with the detection module. The detection module is configured to detect a state of an external switch, generate a detection signal according to the state of the external switch as detected, and send the detection signal to the drive and logic conversion module; and the drive and logic conversion module is configured to receive the detection signal from the detection module, generate a driving signal according to the detection signal, and drive an operation state of a discharge module for discharging an output electrolytic capacitor of the LED drive circuit by using a state of the driving signal.

Abstract: An inductor skeleton structure includes a pedestal and a main winding part. The pedestal includes a base, a fixing part and an auxiliary winding part, the fixing part is disposed on the base, and the auxiliary winding part is extended away from the base from a side surface; the main winding part has a main winding groove; the main winding part is fixed on a side of the base by the fixing part; the auxiliary winding part is used for winding an auxiliary coil capable of covering at least a portion of the welding surface; and the auxiliary coil is flush with or beyond the fitting surface.

Abstract: Examples of the present disclosure provides a BUCK topological circuit for power supply including a rectification circuit, a first filter energy-storage circuit, a step-down constant-current driver chip, an output current setting circuit, a freewheeling circuit, a transformer, and a second filter energy-storage circuit. An external power supply capacitor is not required in the step-down constant-current driver chip.

Abstract: The present disclosure provides a combinational circuit and a control circuit. The combinational circuit is applied to an LED drive circuit and includes a detection module and a drive and logic conversion module connected with the detection module. The detection module is configured to detect a state of an external switch, generate a detection signal according to the state of the external switch as detected, and send the detection signal to the drive and logic conversion module; and the drive and logic conversion module is configured to receive the detection signal from the detection module, generate a driving signal according to the detection signal, and drive an operation state of a discharge module for discharging an output electrolytic capacitor of the LED drive circuit by using a state of the driving signal.