Patent ID: 7183747

Claim:
A circuit arrangement for determining the average current consumption of a battery-operated electronic apparatus, characterized in that a switching element (S) is positioned between an energy source ( 3 ) and the apparatus ( 1 ), and In that an energy store (C) is provided which is chargeable from the energy source ( 3 ) across the switching element (S) and which is dischargeable across the apparatus ( 1 ), in that a comparator assembly ( 4 ) determines the charging state of the energy store (C), the comparator assembly ( 4 ) switching the switching element (S) to the non-conductive state if the predetermined upper threshold value (Uso) is exceeded and switching the switching element (S) to the conductive state if the lower threshold value (Usu) is fallen below, the energy store (C) being charged when the switching element (S) is in the conductive state and discharged across the apparatus ( 1 ) in accordance with the respective current consumption thereof when the switching element (S) is in the non-conductive state, and in that a counter ( 8 ) is provided, which counts the number (N) of charging and/or discharging processes occurring within the predetermined measuring time (T), and in that a computing unit ( 10 ) is provided which calculates the average current consumption from the number (N), the measuring time (T) and the determined size of the energy store (C) as well as with the upper threshold value (Uso) and the lower threshold value (Usu).