(A)diode are extensively used in rectifier ckt that convert
ac voltage into fixed dc voltage.i/p voltage to the
rectifier could be sigle phase or three phase...
(B)on the other hand converters working can be explained
with the help of their 4 types-
1.ac-dc conveters(also known as controlled rectifier)-
natural commutated thyristors are extensively used.the
average value of o/p voltage can be controlled by varying
the conduction time of thyristors or firing angle delay.the
i/p could be a single or three phase source...
2.ac-ac converters(also known as ac voltage controller)-
these converters are used to obtain a variable ac o/p
voltage from a fixed ac source.in which TRIAC are used and
average value of o/p voltage is controlled by varying the
conduction time of a thyristor or firing angle delay...
3.dc-dc converters(also known as chopper or switching
regulators)-in which transistors are used and average time
of o/p voltage is controlled by varying the conduction time
4.dc-ac converters(also known as inverter)-in which also
transistors are used.the o/p voltage is of the alternating
form.the o/p voltage can be controlled by varying the
conduction time of the thyristors...
Rectifier means to change AC voltage into a fixed DC
voltage (240vac into 48vdc). Converter means to change the
AC voltage level into another level of the same AC voltage
(120vac to 240, or 240vac to 120vac)
Rectifier means Alternating current(AC) to Direct current(DC) conversion and apply the use of diodes.
A converter can be AC to DC or DC to AC or conversion from one level of either AC or DC to another level.
A rectifier converts AC voltage into DC voltage. A
converter is something more general. It describes not only
rectifiers, but also devices that can turn DC into AC or
perform DC-to-DC or AC-to-AC conversion.
converter change one form of supply in to other.that is
from AC to DC, DC to AC(inverter), AC to AC(cylic
converter) with change in frequency.
rectifier convert AC into DC.that rectifier is a kind of
converter. But all the converters are not rectifiers.
In all whole converters makes use of SCR, MOSFET and
transistors, rectifiers is almost always diodes (bridge or