Duty Factor defines which relationship in a pulsed emitter?

Duty Factor defines which relationship in a pulsed emitter?

• A. The ratio of on time to total time
• B. The height of the pulse
• C. The energy per pulse
• D. The frequency of the Emitter

Answer: (A)

Duty factor tells you how much of each pulse cycle the emitter is actually on. It’s defined as the on-time divided by the total period: D = t_on / T. This is the ratio of time the transmitter is radiating to the full cycle length, not about how tall the pulse is, how much energy each pulse carries, or how often pulses occur. For example, if the pulse width is 2 microseconds and the period is 10 microseconds, the duty factor is 0.2, meaning the emitter is on 20% of the time in every cycle. The average power delivered is the peak power during the pulse multiplied by the duty factor, while the pulse height and energy per pulse depend on peak power and pulse width, and the repetition rate is set by the period (frequency).

Duty factor tells you how much of each pulse cycle the emitter is actually on. It’s defined as the on-time divided by the total period: D = t_on / T. This is the ratio of time the transmitter is radiating to the full cycle length, not about how tall the pulse is, how much energy each pulse carries, or how often pulses occur. For example, if the pulse width is 2 microseconds and the period is 10 microseconds, the duty factor is 0.2, meaning the emitter is on 20% of the time in every cycle. The average power delivered is the peak power during the pulse multiplied by the duty factor, while the pulse height and energy per pulse depend on peak power and pulse width, and the repetition rate is set by the period (frequency).