Low voltage supply circuit for operating integrated circuit of operating device, has integrated circuit supplied with electric current when voltage level at current supply connection of integrated circuit is lower than reference voltage

摘要

The circuit has a current amplification circuit (10) for supplying an input voltage (1). The amplification circuit is subjected to a control input with a reference voltage that is produced by a zener diode based on the input voltage. An integrated circuit (8) is supplied with electric current, only when a voltage level at a current supply connection of the integrated circuit is lower than the reference voltage at the control input of the amplification circuit. Two parallel input resistances are switched between the amplification circuit and the integrated circuit. An independent claim is also included for a method for operating an integrated circuit in an operating device.