LIBRARY ieee,disciplines; USE ieee.math_real.all; USE ieee.math_real.all; USE work.electrical_system.all; USE work.all; -- Entity declaration -- ENTITY VOLTAGE_SOURCE IS GENERIC ( amplitude : REAL := 2.0; offset : REAL := 1.2; width : REAL := 0.002; period : REAL := 0.005; k : REAL := 100.0 ); PORT ( terminal RT : electrical; terminal LT : electrical ); END ENTITY VOLTAGE_SOURCE;