How to change duty cycle of square wave

1. How do you increase the duty cycle of a square wave?
2. How do you vary the duty cycle?
3. Which modulation controls the duty cycle of the square wave form?
4. What can be added to the circuit to change duty cycle?

How do you increase the duty cycle of a square wave?

By feeding this into one input of a comparator and adjusting the voltage on the other input using one of your potentiometers you can adjust the duty cycle on the comparator output.

How do you vary the duty cycle?

A variable resistor is used to adjust the duty cycle of the PWM produced by the PWM generator. In more complicated circuits, where auto-tuning of the duty cycle is required, PCB designers often turn to microcontrollers.

Which modulation controls the duty cycle of the square wave form?

A PWM is basically a digital unipolar square wave signal where the duration of the ON time can be adjusted (or modulated) as desired. This way the power delivered to the load can be controlled from a microcontroller.

What can be added to the circuit to change duty cycle?

You can add a potentiometer to shift the rate of current flow to/from the capacitor.