Undesirable elements found in hydraulic and electronic circuits differ in physics as well as philosophy. In principle, hydraulic filters consist of porous media that trap particles greater than a specified size to remove contaminants from the fluid, all of which are undesirable. Traditional electronic filters consist of a combination of resistors, capacitors, and inductors to take advantage of circuit resonance to perform band-blocking or bandpassing filter functions to eliminate or reduce unwanted frequencies...
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