This circuit with 24 dB per octave attenuation was found in the November 1973 Radio Electronics magazine. The components are for 1 kHz but can be recalculated for other frequencies.
This capacitive-coupled stage can be implemented with any general-purpose transistor. The circuit can...
This voltage follower or amplifier with unit gain uses an unusual operational amplifier nowadays. The...
November 2016 - The new wireless power modules for use in wearables from Semtech can now be...