BESSY II employs a TV-like device to generate a 70 kV electron beam. Before injection in the main storage-ring the beam is accelerated over a microtron and a synchrotron to its final energy of 1.7 GeV. The accelerating process takes 50 ms and can be repeated with a repetition rate of 10 Hz. The total current in the storage ring of 100 mA can be obtained by successive injection of electrons, accelerated in multiple accelerating cycles.