Abstract: A circuit board arrangement (100) for a motor controller in a motor housing (50) has at least one first populated circuit board (LP1) and one second populated circuit board (LP2). Contact elements (20) are plugged together in the plug-in direction (S) in order to produce a detachable electrical connection with the first circuit board (LP1). An alignment and guidance device (LP3) protrudes from the first circuit board (LP1) in the plug-in direction (S) toward the second circuit board (LP2). In the assembled state, the contact elements (20) are completely in the plugged-in state with mating contacts (10) of the first circuit board (LP1). An end-side portion (30), of the device (LP3), protrudes through a gap (21) in the second circuit board. The contact elements (20) protrude from or out of the second circuit board (20) in different lengths.

Abstract: The disclosure relates to the operation and a circuit arrangement for a network connection variable with regard to the input voltage (1-phase/3-phase), which is connected using a centre tap (M) between the capacitors (C) via a connecting line to a neutral conductor (N) of an input AC voltage source.

Abstract: The disclosure relates to the operation and a circuit arrangement for a network connection variable with regard to the input voltage (1-phase/3-phase), which is connected using a centre tap (M) between the capacitors (C) via a connecting line to a neutral conductor (N) of an input AC voltage source.