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:

“You know, I often thought that the gangster and the artist are the same in the eyes of the masses. They’re admired and hero-worshipped but there is always present underlying desire to see them destroyed at the peak of their glory.”
—Stanley Kubrick (b. 1928)

“...every woman who has any margin of time or money to spare should adopt some one public interest, some philanthropic undertaking, or some social agitation of reform, and give to that cause whatever time and work she may be able to afford ...”
—Frances Power Cobbe (1822–1904)

“The abominable doctrine taught in the pulpit, the press, in books and elsewhere, is that the whole duty of women is self- abasement and self-sacrifice. I do not believe subjection is woman’s duty any more than it is the duty of a man to be under subjection to another man or many men. Women have the right of independence, of conscience, of will and of responsibility.”
—Anna Howard Shaw (1847–1919)

“The cycle of the machine is now coming to an end. Man has learned much in the hard discipline and the shrewd, unflinching grasp of practical possibilities that the machine has provided in the last three centuries: but we can no more continue to live in the world of the machine than we could live successfully on the barren surface of the moon.”
—Lewis Mumford (1895–1990)