This notch filter was found in National Semiconductor documentation from the 1980s. Operational amplifiers are from that era. The configuration can be adapted to use modern operational amplifiers.
Unlike the previous detector circuit, this includes the inverter not requiring a high voltage...
Indicated on an 80's Radio Electronics, this circuit provides at its output a voltage that is the...
This one-digit counter is part f the samples bench of the MultiSIM in one of its versions. The...