Sine Wave vs Square Wave: Visual Comparison of AC and DC Signals #1838208 (License: Personal Use)

The image displays two fundamental electrical waveforms: a continuous, oscillating sine wave above, characteristic of alternating current (AC) and analog signals; and a stepped square wave below, representing digital or pulsed direct current (DC) used in logic circuits and PWM control. Both are rendered in bold black lines against a clean white background for clarity and educational use.

Used in electronics tutorials, engineering textbooks, and technical blogs to illustrate signal types; supports user intent for learning waveform fundamentals, circuit design, or troubleshooting signal integrity.