This filter is current driven and has the formulas given by the two diagram options. The circuit is from an American documentation from the 90s applying to any operational amplifier.
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
If you have an old cassette player or bought one from a junk shop, you can set up a small table...
This circuit was found in a 70s American documentation. The converter can be of any type and the...