A dimmable energy-efficient electronic lamp connectable to a mains power supply, said lamp comprising: - a dynamic load circuit adapted to stabilize a phase-cut dimmer, - a rectifier circuit adapted to rectify a mains power supply signal supplied to the dimmable energy-efficient electronic lamp by the mains power supply, - a phase-cut detector having a voltage divider circuit adapted to divide said rectified mains power supply signal provided by said rectifier circuit with a predetermined division ratio, a comparator adapted to compare the divided rectified mains power supply signal with a predetermined reference voltage to generate a dimmer on/off signal comprising a duty cycle which depends on whether a phase-cut dimmer is in a conduction stage or not, and a low pass filter adapted to filter the dimmer on/off signal to generate a dim-level indication signal (DIMLVL) indicating the ratio between on-/off stage of the phase-out dimmer, and said lamp characterised by comprising: - a dynamic load control circuit adapted to deactivate said dynamic load circuit which uses the dim-level indication signal (DIMLVL) to detect that no phase-cut dimmer is present in said mains power supply - a driver circuit adapted to receive the dim-level indication signal (DIM LVL) to stabilize an electrical current flowing through at least one light emitting entity comprising at least one light emitting diode or at least one OLED or at least one CFL or at least one laser, wherein the driver circuit comprises: a buck converter; and a reshaping circuit which adapts a dimming curve to the human eye sensitivity, the reshaping circuit being adapted to sense the electrical current flowing through the light emitting entity, to compare the sensed current to an input reshaped reference signal, and to control the buck converter by an error between the sensed current and the reshaped reference signal. - a dynamic load circuit adapted to stabilize a phase-cut dimmer, - a rectifier circuit adapted to rectify a mains power supply signal supplied to the dimmable energy-efficient electronic lamp by the mains power supply, - a phase-cut detector having a voltage divider circuit adapted to divide said rectified mains power supply signal provided by said rectifier circuit with a predetermined division ratio, a comparator adapted to compare the divided rectified mains power supply signal with a predetermined reference voltage to generate a dimmer on/off signal comprising a duty cycle which depends on whether a phase-cut dimmer is in a conduction stage or not, and a low pass filter adapted to filter the dimmer on/off signal to generate a dim-level indication signal (DIMLVL) indicating the ratio between on-/off stage of the phase-out dimmer, and said lamp characterised by comprising: - a dynamic load control circuit adapted to deactivate said dynamic load circuit which uses the dim-level indication signal (DIMLVL) to detect that no phase-cut dimmer is present in said mains power supply - a driver circuit adapted to receive the dim-level indication signal (DIM LVL) to stabilize an electrical current flowing through at least one light emitting entity comprising at least one light emitting diode or at least one OLED or at least one CFL or at least one laser, wherein the driver circuit comprises: a buck converter; and a reshaping circuit which adapts a dimming curve to the human eye sensitivity, the reshaping circuit being adapted to sense the electrical current flowing through the light emitting entity, to compare the sensed current to an input reshaped reference signal, and to control the buck converter by an error between the sensed current and the reshaped reference signal. a buck converter; and a reshaping circuit which adapts a dimming curve to the human eye sensitivity, the reshaping circuit being adapted to sense the electrical current flowing through the light emitting entity, to compare the sensed current to an input reshaped reference signal, and to control the buck converter by an error between the sensed current and the reshaped reference signal.