Critical galvanometer transfer function
= Critical galvanometer transfer function
With $e^{i\omega t}$ <phasors>, <critical damping> gives $\Theta(\omega)=F_0/(\omega_0+i\omega)^2$, <amplitude> $F_0/(\omega_0^2+\omega^2)$ and <phase> $-2\arctan(\omega/\omega_0)$. The response strongly suppresses <alternating currents> well above the mechanical <frequency>.