DIY simple band-pass filter - Do It Easy With ScienceProg
ElectronicsNotes on Twitter: "It is very easy to make a simple high pass filter out of a single transistor circuit stage. #highpassfilter #circuitdesign https://t.co/2hHxXL91OZ https://t.co/L58JP0UolS" / Twitter
Simple 12 db low pass filter ∞ L.E.P.
ElectronicsNotes on Twitter: "A simple one transistor high pass filter can be very useful when some attenuation is needed & there is no space left on the PCB. #highpassfilter #electronicdesign #circuitdesign #transistor
operational amplifier - How to design BJT active filters? - Electrical Engineering Stack Exchange