The duty cycle of a clock is 60%. If the low time of the clock is 50µ, what is the clock frequency?

Question

The duty cycle of a clock is 60%. If the low time of the clock is 50µ, what is the clock frequency?

Answer 1

Because we know the duty cycle is 60%, we know that for 40% of the cycle's period, the clock is low.

Knowing this fact, we can use the following relation: 50microsec / 40% = fullPeriod / 100%. The full period comes out to be 125 microseconds.

To get the frequency, all we need to do is use the frequency-period relationship: frequency = 1 / period. After plugging in the values for the period, the clock frequency comes out to be 8000Hz (or 8kHz).