1. A current adjustment circuit, wherein:the current adjustment circuit comprises a lighting sub-circuit, a dimming switch, a switch control sub-circuit connected to the dimming switch and the lighting sub-circuit, and a time control sub-circuit connected to the switch control sub-circuit;
the time control sub-circuit is configured to determine a first preset time period and a second preset time period, wherein
in the first time period, the current adjustment circuit is in a first state and current flow of the lighting sub-circuit is oscillating around zero and/or hold at zero;
in the second time period, the current adjustment circuit is in a second state and the current flow of the lighting sub-circuit is larger than zero; and
the dimming switch is configured to control the current adjustment circuit to switch from the first state to the second state by switching from a switch-off state to a switch-on state.