Types of Pulse Width Modulation

In different types of Pulse Width Modulation,

Options:

a) Leading edge of the pulse is kept constant
b) tail edge of the pulse is kept constant
c) centre of the pulse is kept constant
d) all of the above

Correct Answer: all of the above

Explanation:

There are types of Pulse Width Modulation. In one of the variations, leading edge of the pulse is kept constant and pulse width is measured with respect to leading edge. In second type, tail edge of the pulse is kept constant and pulse width is measured with respect to it. And the third type has a constant centre of the pulse and the pulse width changes on both the sides of the centre of the pulse.