1. What is Pulse Width?

Pulse width refers to the duration of time that a pulse signal remains in its active state (usually high) during one complete cycle. It is a fundamental parameter in digital electronics, signal processing, and pulse-width modulation (PWM) applications.

2. How Does the Calculator Work?

The calculator uses the pulse width formula:

Where:

• \( \text{Pulse Width} \) — Duration of the pulse in active state (seconds)
• \( \text{Period} \) — Total time for one complete cycle (seconds)
• \( \text{Duty Cycle} \) — Percentage of time the signal is active during one period (%)

Explanation: The formula calculates the actual time duration of the pulse by multiplying the total period by the duty cycle percentage converted to a decimal value.

3. Importance of Pulse Width Calculation

Details: Accurate pulse width calculation is essential for designing and analyzing digital circuits, PWM controllers for motor speed control, LED dimming, power regulation, and timing applications in embedded systems.

4. Using the Calculator

Tips: Enter the period in seconds and duty cycle as a percentage (0-100%). Both values must be positive numbers, with duty cycle between 0% and 100%.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between pulse width and frequency?
A: Frequency is the reciprocal of period (Frequency = 1/Period). Pulse width determines the active time regardless of frequency.

Q2: How does duty cycle affect pulse width?
A: Higher duty cycle means longer pulse width for the same period. A 50% duty cycle results in equal on and off times.

Q3: What are typical applications of pulse width calculation?
A: PWM motor control, LED brightness control, switching power supplies, digital communication protocols, and timing circuits.

Q4: Can pulse width be longer than the period?
A: No, pulse width cannot exceed the period since it represents a portion of one complete cycle.

Q5: How is pulse width measured in practice?
A: Using oscilloscopes, logic analyzers, or digital multimeters with pulse width measurement capabilities.