A-16. High-pass filter, low-frequency discriminator, or low-frequency attenuator.
A-17. Low-pass filter, high-frequency discriminator or high-frequency attenuator.
A-18. At low-frequency, a capacitor acts as an open and an inductor acts as a short. At high-frequency,
a capacitor acts as a short and an inductor acts as an open.
A-19. Frequency cutoff (fco).