Power (physics) - Peak Power and Duty Cycle

Peak Power and Duty Cycle

In the case of a periodic signal of period, like a train of identical pulses, the instantaneous power is also a periodic function of period . The peak power is simply defined by:

$P_0 = \max$ .

The peak power is not always readily measurable, however, and the measurement of the average power is more commonly performed by an instrument. If one defines the energy per pulse as:

$\epsilon_\mathrm{pulse} = \int_{0}^{T}p(t) \mathrm{d}t \,$

then the average power is:

$P_\mathrm{avg} = \frac{1}{T} \int_{0}^{T}p(t) \mathrm{d}t = \frac{\epsilon_\mathrm{pulse}}{T} \,$ .

One may define the pulse length such that so that the ratios

$\frac{P_\mathrm{avg}}{P_0} = \frac{\tau}{T} \,$

are equal. These ratios are called the duty cycle of the pulse train.

Read more about this topic: Power (physics)

Famous quotes containing the words peak, power, duty and/or cycle:

“Sleep shall neither night nor day
Hang upon his penthouse lid;
He shall live a man forbid;
Weary sev’n-nights, nine times nine,
Shall he dwindle, peak and pine;
Though his bark cannot be lost,
Yet it shall be tempest-tossed.”
—William Shakespeare (1564–1616)

“We who didn’t inherit political power nor are made to acquire riches like nothing better than that which expands and solidifies the power of the spirit.”
—Johann Wolfgang Von Goethe (1749–1832)

“There is nothing on earth so easy as to forget, if a person chooses to set about it. I’m sure I have as much forgot your poor, dear uncle, as if he had never existed; and I thought it my duty to do so.”
—Richard Brinsley Sheridan (1751–1816)

“The Buddha, the Godhead, resides quite as comfortably in the circuits of a digital computer or the gears of a cycle transmission as he does at the top of a mountain or in the petals of a flower.”
—Robert M. Pirsig (b. 1928)