Special topics in AC analysis When signals are sine waves we introduce new units suited to the task of understanding how they move through systems. Decibel — power ratios RMS — root-mean-square AC analysis $\qquad$ Amplifiers Comment (cancel reply) Name E-mail Send me an email when someone comments. Submit Comments are held for moderation. There will be a delay before they appear. Comments may include Markdown. To share something privately: Contact me.