Bias circuit for a linear amplifier

摘要

A bias circuit for a linear amplifier having an NF amplifier whose NF loop includes a first capacitor, bias means for providing a given bias potential to the amplifier through a charging circuit of a second capacitor and precharge means for precharging the first capacitor only when the second capacitor is charged by the given bias potential. With such a circuit connection, the first capacitor is charged within a short period from the time when the power source has been in ON state.