In a Switching Regulator,
a) output voltage is controlled by switching the input voltage on and off
b) electrical noise results due to rapid switching of voltage
c) the output voltage increases with increase in duty cycle
d) the output voltage switches in polarity as duty cycle increases
e) all of these
f) (a), (b) and (c)
f) (a), (b) and (c)
The correct answer is f) (a), (b), and (c).
In a switching regulator, the output voltage is controlled by switching the input voltage on and off. This allows for efficient regulation by rapidly switching between states to maintain a desired output voltage.
Due to the rapid switching of voltage, electrical noise can result. This noise is typically minimized through the use of filtering components and techniques.
The output voltage of a switching regulator can be controlled by adjusting the duty cycle, which is the ratio of the on-time to the total switching period. Increasing the duty cycle can increase the average output voltage, while decreasing the duty cycle can decrease it.
Therefore, all of these options (a), (b), and (c) are true for a switching regulator.