What is DC variable power supply?

What is DC variable power supply?

A variable power supply is one which includes some means for the user to easily adjust the output voltage and sometimes the current. Adjustment is most often accomplished with a potentiometer, but may also be done with an analog control voltage, a digital input, an autotransformer, etc.

How do you find a DC supply variable?

To make Variable DC power supply, you will required following list of components;

  1. Transformer 220V to 30V ,2A rating.
  2. Diodes.
  3. High capacitance capacitor (1800uF)
  4. Small capacitors for IC.
  5. IC LM317.
  6. Resistors of 500 ohms.
  7. 1.5A fuse.
  8. Probes .

What is a variable DC voltage?

Variable DC voltage as a solution to improve output voltage quality in multilevel converters. Abstract: As the multilevel converters have many advantageous features over the conventional two-level converters, they have been widely investigated and applied in industry.

How do variable power supplies work?

A power supply can be given from the battery or from a hardware circuitry which converts the AC supply into the DC supply or step-down AC to step-up AC and vice-versa. A variable power supply is one which facilitates the user to vary and adjust the desired output voltage and output current.

What is variable 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.

How does a variable power supply work?

Why do we need variable DC voltage?

1. The DC voltage you have now is NOT fixed in its value(because supply AC voltage is always variable due to load fluctuation). 2. Now,if you draw power from this DC source at different loads(or different current requirement),the voltage you will get will be different in each case.