Working of half wave rectifier

Answer 1

AnswerA half-wave rectifier converts an alternating voltage (such as your wall socket) into a pulsing DC signal. This can be further processed with circuits called 'filters' and 'regulators' to produce a steady DC voltage (such as a battery.) The basic half-wave rectifier is a 'diode'. This is an electrical one-way street that only allows flow in one direction. When the AC voltage is going one direction, the diode allows current flow. When the AC is of the opposite direction, the diode blocks current flow. Since only one half of the full AC signal is allowed to pass, it is called a half-wave rectifier. Using 2 diodes and a center tapped transformer, or 4 diodes arranged in a bridge rectifier circuit, the entire wave can be converted and it is called a full-wave rectifier. Try researching 'power supplies' for more information.

Answer 2

Half wave rectifier is used to convert an AC signal into pulsating DC signal.....

(Note:pulsating DC wave because the current is unidirectional but the amplitude is not the same)

In Half wave rectifier consists of a input transformer(step down) connected to a diode and a load...

DIODE:diode is made up of semi-conducting material which conducts only in one direction...

operation: An AC source produces sinusoidal wave. the diode conducts only in one direction and passes only the positive half cycle of the sinusoidal wave.thus the AC signal gets converted into unidirectional wave(i.e. DC).

Even though the output is unidirectional yet it is pulsating...

more over there will be some AC signal present in it this is known as ripple...

to eliminate this filters are used...

FILTERS: capacitor and inductors are used as filter..

for example when inductor is connected in series with the diode it eliminates the AC signal as inductor acts as short circuit to DC and acts as open circuit to AC.......

Answer 3

It's cheap...doesn't need a center tapped transformer, needs only one rectifier diode, but due to the fact that it only conducts on one half cycle, it needs more smoothing capacitance and has more ripple if loaded.

Answer 4

we are using diode in half-wave rectifier because we need only positive half cycle and we need not want -ve cycle.and coming to diode it allows only d.c and it does not allows a.c (it consists of both +ve & -ve half cycles) .for this reason we are using diode in half wave rectifier

Answer 5

A simple half wave rectifier is still used in many signal demodulation processes. Here there is no advantage to full wave rectification.

As soon as there is a need for power, rather than just a signal, then full wave rectification demonstrates its superiority.

Answer 6

An AC signal contains both positive and negative voltage to get rid of either polarity a half wave rectifier can be used

Answer 7

A common use - is to convert AC mains to DC. The rectifier effectively 'erases' one half of the incoming alternating current - producing a clean direct current at the output.

Answer 8

AMETEK programable power

Answer 9

application controlled rectifier