Dimmer control circuit, dimmer control method and lighting device containing the same

A lighting device, comprising a dimmer control circuit and a load, wherein the dimmer control circuit includes a dimming output end, a detection-control module, a current holding module, and a load terminal:

• the dimming output end is configured to connect to a dimmer,
• the load terminal is configured to connect to the load,
• an input end of the detection-control module is connected to an output end of the dimmer,
• an output end of the detection-control module is configured to:
• control the current holding module to connect to the load terminal when the dimming output end is connected to a SCR-based leading-edge phase cut dimmer, and
• control the current holding module to disconnect from the load terminal when the dimming output end is not connected to the SCR-based leading-edge phase cut dimmer;
• and
• the current holding module is configured to supply a holding current to the SCR-based leading-edge phase cut dimmer connected to the dimming output end.

A dimmer control method, comprising:

• determining whether a front end of a dimmer control circuit is connected to a SCR-based leading-edge phase cut dimmer, the dimmer control circuit including a dimming output end, a detection-control module, a current holding module, and a load terminal;
• connecting the current holding module to the load terminal of the dimmer control circuit when the dimmer control circuit is connected to the SCR-based leading-edge phase cut dimmer, wherein the current holding module is configured to provide a holding current to the SCR-based leading-edge phase cut dimmer;
• and
• disconnecting the current holding module from the load terminal of the dimmer control circuit when the dimmer control circuit is not connected to the SCR-based leading-edge phase cut dimmer.