VOLTAGE REGULATOR

1.       THE BASIC PURPOSE OF A POWER SUPPLY IS TO

• Forward bias

• Provide one or more fixed voltages

• Reverse bias

• All of the above

The block diagram of regulated power supply consist of

• Transformer

• Rectifier

• DC Filter

• All of the above

The smaller the voltage regulation, the better the operation of the voltage supply circuit. Explain why.

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Answer explanation

An amplifier is an electronic circuit designed by using an active device like bipolar junction transistor.

Transformer is a device that

• step up or step down the ac voltage provided by the wall outlet to a desired amplitude through the action of a magnetic field

• which will convert the standard ac voltage

• regulate an AC line voltage

• supplies low voltage for electronics circuits

Answer explanation

Choose two types of rectifier circuits

• Half wave rectifier

• Uncontrolled rectifier

• Full wave rectifier

• Controlled rectifier

V_NL represent to

• Full no load output voltage

• Power supply

• No-load output voltage

• Load resistance

Draw and label the types of regulator

Shunt regulator circuit known as

• Form of voltage regulator where the regulating element shunts the current to ground

• Increases the load resistance

• Maintain the constant value

• Changed the output voltage

What is line regulation ?

• The process of keeping Zener diode voltage constant inspite of changes in AC supply

• The process of keeping load voltage constant irrespective of the fluctuation in AC supply or the line voltage

• The process of keeping load voltage constant irrespective of fluctuation in load current

• The process of keeping Zener current constant irrespective of fluctuation in AC supply

Answer explanation

Line regulation is the process of keeping the load voltage constant, irrespective of fluctuation in AC supply or the line voltage. In line regulation, the load current is considered constant.

What is load regulation?

• The process of keeping the load voltage constant irrespective of any change in AC supply

• The process of keeping the load voltage constant irrespective of variations in load current

• The process of keeping load voltage constant irrespective of variations in source current

• The process of keeping load current constant irrespective of variations in AC suppl

Answer explanation

Load regulation is the process of keeping V_O constant irrespective of variations in load current. The line voltage is taken to be constant during load regulation.