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)

“Power, I said. Power to walk into the gold vaults of the nations, into the secrets of kings, into the holy of holies. Power to make multitudes run squealing in terror at the touch of my little invisible finger. Even the moon’s frightened of me. Frightened to death. The whole world’s frightened to death.”
—R.C. Sherriff (1896–1975)

“The matter of consulting experienced workers, of keeping all the workers informed of changes in production and wage methods, and how the changes are arrived at, seems to me the most important duty in the whole field of management.”
—Mary Barnett Gilson (1877–?)

“Only mediocrities progress. An artist revolves in a cycle of masterpieces, the first of which is no less perfect than the last.”
—Oscar Wilde (1854–1900)