Patent ID: 8717790
Filing Date: 2014-05-06
Classification: H02M,Y02B

Abstract:
1. An electrical supply apparatus having an input for connecting the electrical supply apparatus to a mains supply which provides an alternating voltage as input voltage (Uin), having an output for connecting the electrical supply apparatus to a load (V), wherein the output provides a DC voltage (Uout) as output voltage, having a rectifier which rectifies the input voltage (Uin) to form a rectified input voltage (Upfc), having a PFC module which comprises a smoothing device for smoothing the rectified input voltage (Upfc) and an active power factor correction device, wherein the power factor correction device is designed to form a time-dependent supply current for the smoothing device depending on a time-dependent current form signal in such a way that a time-dependent input current (Ipfc) in the PFC module is matched to the current form signal, having a control module which produces the current form signal for the PFC module, wherein the control module is in the form of an analogue circuit which has the rectified input voltage (Upfc) as input signal and the current form signal as output signal, wherein the rectified input voltage (Upfc) has a waveform with a rising and a falling input voltage edge and with an input voltage maximum, and the current form signal has a waveform with a rising and a falling current form edge and with a current form maximum, wherein, at least in some regions, the rising and/or the falling current form edge is set back with respect to the rising or falling input voltage edge to a greater extent than the current form maximum with respect to the input voltage maximum.