model circuitoRC
  resistor R(R = 1000.0);
  capacitor C(C = 0.01);
  fonteDegrau U(V0 = 10.0, t0 = 10.0);
  terra T;
equation
  connect(U.p,R.p);
  connect(R.n,C.p);
  connect(C.n,T.c);
  connect(T.c,U.n);
end circuitoRC;