Dimmable LED Bulb

The invention relates to a method for dimming operated by means of an operating device bulbs, in particular a converter for at least one LED and / or OLED. The process in this case has the following steps: - phase control of a voltage supply of the operating device, - supplying the voltage supply phase control to an energy accumulator, in particular a Passive Valley fill circuit, ie, a passive power factor correction circuit of the operating device, - evaluating the output voltage of the energy store, in particular the variation caused by the phase angle of the output voltage of the energy storage to provide a light output of lamps parameters determining the operation of an operating circuit, preferably downstream depending and - continuing the output voltage of the energy store, preferably via the operating circuitry for powering the bulbs.