Find the output voltage for a step-up chopper when it is operated at a duty cycle of 50 % and Vs = 240 V.

To find the output voltage (( V_{out} )) for a step-up (boost) chopper, we can use the formula:

[

V_{out} = frac{V_s}{1 – D}

]

Where:

– ( V_s ) is the input voltage,

– ( D ) is the duty cycle (in decimal form).

Given:

– ( V_s = 240 , V )

– ( D = 50% = 0.5 )

Substituting the values in:

[

V_{out} = frac{240}{1 – 0.5} = frac{240}{0.5} = 480 , V

]

Therefore, the output voltage for the step-up chopper is 480 V.