Segmental driving of light emitting circuits

A driver adapted to connect to light emitting circuits and for driving the light emitting circuits, the driver comprising:

• a bypass switching circuit for guiding a bypass current signal which bypasses all light emitting circuit during an initial time-interval, amplitudes of a mains signal for feeding the driver being in an initial range and less than a minimum voltage amplitude across a first light emitting circuit to start emitting light during the initial time-interval,
• a first switching circuit for guiding a first current signal through the first light emitting circuit during a first time-interval, amplitudes of the mains signal being in a first range during the first time-interval, the amplitudes of the mains signal in the first range being larger than the amplitudes of the mains signal in the initial range,
• a second switching circuit for guiding a second current signal through a series connection of the first light emitting circuit and a second light emitting circuit during a second time-interval, amplitudes of the mains signal being in a second range during the second time-interval, the amplitudes of the mains signal in the second range being larger than the amplitudes of the mains signal in the first range,
• an adaptation circuit for adapting an amplitude of the bypass current signal during the initial time-interval and for adapting an amplitude of the first current signal during the first time-interval and for adapting an amplitude of the second current signal during the second time-interval so that the bypass current substantially follows the mains signal at least in the form, the adaptation circuit comprising a current source for in response to a definition signal defining the amplitudes of the bypass current signal, the first current signal and the second current signal, and the adaptation circuit further comprising a definition circuit for in response to a detection of the amplitude of the mains signal providing the definition signal to the current source,
• the current source comprising a resistor, and the definition signal comprising a voltage signal and one or more voltage definition components coupled serially to the resistor, and
• the definition circuit comprising an input voltage divider comprising two resistors and an intermediate contact, an inverting transistor, an interfacing voltage divider comprising three resistors and first and second intermediate contacts, a programmable regulator with a negative transfer, an output resistive network comprising two resistors, and an output transistor, a control electrode of the inverting transistor being coupled to the intermediate contact of the input voltage divider for said detection of the instantaneous amplitude of the mains input voltage, a main electrode of the inverting transistor being coupled to the first intermediate contact of the interfacing voltage divider, a control input of the programmable regulator being coupled to the second intermediate contact of the interfacing voltage divider, an output of the programmable regulator being coupled to a main electrode of the output transistor, the control input and the output of the programmable regulator being coupled to one of the two resistors of the output resistive network, and a control electrode of the output transistor being coupled to the current source.