Explanation: RL or RLC filter is the most important components of the switching regulator, because there are several areas that are affected by the choke of inductor including energy storage for the regulators output ripple, transient, response etc. 12. Which is the most commonly used low voltage switching regulators?
A. Powdered Permalloy toroids
B. Fermite EI, U and toroid cores
C. Silicon steel EI butt stacks
D. None of the mentioned
Answer:A
Explanation: RL or RLC filter is the most important components of the switching regulator, because there are several areas that are affected by the choke of inductor including energy storage for the regulators output ripple, transient, response etc. 12. Which is the most commonly used low voltage switching regulators?
A. Powdered Permalloy toroids B. Fermite EI, U and toroid cores C. Silicon steel EI butt stacks D. None of the mentioned
Explanation: The silicon steel EI butt stack exhibits high permeability high flux density and ease of construction and mounting therefore, it is most commonly used in low voltage switching regulators. 13. Find the value of Rsc, L and Co for a µA7840 switching regulator to provide +5 v at 3A, using the following specifications: toff= 24µs, ripple voltage = 400mA and ton=26µs.