What is an adjustable voltage regulator?

An adjustable voltage regulator produces a DC output voltage, which can be adjusted to any other value of certain voltage range. Hence, adjustable voltage regulator is also called as a variable voltage regulator. The DC output voltage value of an adjustable voltage regulator can be either positive or negative.

What are the advantages of adjustable over fixed voltage regulator?

The adjustable voltage regulators offer variety of performance and reliability advantages over fixed voltage regulators i.e. improved system performance by having line and load regulation of a factor of 10 or better. Also, it improves the system reliability and performance.

What are the 2 types of voltage regulator?

There are two main types of voltage regulators: linear and switching. Both types regulate a system’s voltage, but linear regulators operate with low efficiency and switching regulators operate with high efficiency.

Which type of voltage regulator is best?

When high efficiency is needed, or a wide range of input voltage is expected, a switching regulator becomes the best option. Switching voltage regulators have power efficiencies of 85\% or better compared to linear voltage regulator efficiencies that are often below 50\%.

Can fixed regulator be used as variable regulator?

LM317 is a simple Variable Voltage Regulator IC that can be used to produce voltages in the range of 1.5V to 37V. But you can produce the same from a fixed voltage regulator like 7805 as well (although not the same range). This can be achieved by adding two resistors.

Which IC is adjustable voltage regulator?

Adjustable/Variable Voltage Regulator using LM 117 IC. A circuit that regulates the output voltage within a desired range and can be adjustable within that range is called an Adjustable Voltage Regulator.

Is an example for positive adjustable voltage regulator?

LM317 is a classic example of positive adjustable voltage regulator, whose output voltage can be varied over a range of 1.2 volts to 57 volts. In this circuit, the value of Vref is the reference voltage between the adjustment terminals and the output taken as 1.25 Volt.

Which is the most commonly used low voltage switching regulators?

silicon steel EI butt stack
12. Which is the most commonly used low voltage switching regulators? 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.

What is fixed voltage?

In short, a fixed voltage type is a variable voltage type that integrates the external resistor.