This circuit is from an American publication of the 80's. It makes use of components of the time. However, the circuit is the basis for a modern shield application since the input is TTL.
This second-order filter was found in old American documentation and can be applied to other...
Found in an old Elektor, this circuit uses two 7-segment displays to indicate the volume of an...
Found in a 90s Popular Electronics, this circuit makes use of power MOSFETs. Equivalent MOSFETs can be...