PWM technically be the pulse-width modulation (also known as PWM stands for pulse-width modulation) of a signal or energy source. It is a technique in which the duty cycle of a periodic signal (a sine or a square, for example) is modified, either for transmitting information through a communications channel or to control the amount of power that is sent to a load. Pair

One hertz is one cycle per second, meaning repeating cycle as an event. For example, hertz is applied physics measuring the number of times for a second wave (either acoustic or electromagnetic) is repeated or can be applied, among other uses, to ocean waves that reach the Beach vibrations per second or a solid. The quantity that measures the frequency hertz is called,in this regard, the inverse of the period. One hertz is an oscillation frequency of suffering a particle over a period of one second.