Circuit layout for demodulating a voltage changes amplitude between a low and high level generating a charging voltage for each first and second charging circuit.

摘要

A voltage is (ASK)-modulated by a change in amplitude between a low and high level. On a first and second charging circuit one charging voltage is generated for each. A decoupling device decouples the first charging circuit with a predetermined ratio between the charging voltage of the second charging circuit and an input voltage for a rectifier circuit.