my friends. I have a series problem with power supply noise.I tried several circuits still i couldnt get rid of it. can some one suggest a good cct to reduse DC power supply noise(com mode and diff mode)
thanks 4 all
i do not know of any circuits which explicitly filter the power supply noise. I have seen some crude RC filters on power supply but in general differential amplifiers are used which have high PSRR(Power Supply Rejection Ratio) since the power supply noise appears as common mode.