###### Asked in Electronics Engineering

Electronics Engineering

# What is the ripple frequency for single phase wave rectifier?

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## Related Questions

###### Asked in Home Electricity, Electronics Engineering, Electrical Engineering

### What is ripple frequency of 50 Hz 3 phase full ac supply?

A single phase half wave rectifier outputs ripple the same
frequency as the input.
A single phase full wave rectifier outputs ripple fundamental
twice the input frequency (assuming balanced recitfiers).
A three phase full wave rectifier outputs ripple fundamental six
times the input frequency. So 50 Hz input would yield 300 Hz
ripple.
See Sources and Related Links for more information.

###### Asked in Electronics Engineering

### How could you measure ripple frequency to determine if a diode were open in a bridge rectifier circuit?

Measuring ripple frequency would determine if a diode were open
in a bridge rectifier circuit because the ripple frequency is
normally twice the input frequency in a functioning full wave
bridge rectifier. If one diode were open, the ripple frequency
would only be the input frequency.
Note: This is true for single phase or bi-phase operation. Three
phase operation is more complex, but still doable - You would
expect three times input frequency in normal state, and two times
(asymmetric) with one open diode.

###### Asked in Home Electricity, Electrical Engineering, Electrical Wiring

### What happens when you lose an input phase on a three phase bridge rectifier?

If the rectifier is wye connected, ripple will increase. If it
is delta connected, ripple will substantially increase. Whether or
not the rest of the rectifier, filter, and regulator are damaged
will depend on how much current is being pulled by whats left, and
by how deep the ripple actually becomes.

###### Asked in Consumer Electronics, Electrical Engineering, The Difference Between

### What is the difference between filter and rectifier?

A rectifier is a device that contains diodes to convert an AC
supply into DC. The resultant DC voltage has ripple on it at twice
the source frequency, or six times the source frequency for a
3-phase rectifier. The subsequent filter is there to filter out the
ripple to provide a constant dc voltage.
On power supplies the filter is often a series inductor, while
on low-power supplies used in electronics the filter is a parallel
capacitor. Additional components may be added to give extra pure DC
is required.

###### Asked in Home Electricity, Electronics Engineering, Electrical Engineering

### What is the ripple frequency of a half wave rectified 3 phase 50Hz supply?

you can't have half wave rectified polyphase AC power, unless
you are using only one of the phases. however with only one diode
from each phase of three 50 Hz phases the ripple frequency is 150
Hz, with two making a full three phase bridge the ripple frequency
is 300 Hz. perhaps that was what you meant.

###### Asked in Electrical Engineering, Welding and Cutting

### Is welding transformer a frequency changing transformer?

Not really. Frequency in is frequency out, unless there is some
conversion circuit in between, such as a motor-generator set or
some kind of inverter. You may (and should) notice, however, that a
typical welding transformer is rectifying three phase AC to DC,
using a full wave rectifier. This results in a pulsating DC voltage
where the ripple frequency is 360hz.

###### Asked in Electronics Engineering, Electrical Engineering

### What is the equation for calculating 3 phase half wave rectifier?

with three phase you can use one phase to make a half wave
any two is at least 2/3wave
with all three 3 diodes you get a very pure dc the output never
never gets near
ripple frequency is 180hz
a six diode bridge will give 360 hz ripple with about 2% voltage
excursion
much less filtering required to get pure dc

###### Asked in Home Electricity, Electrical Engineering, Electrical Wiring

### What is difference between single phase and three phase rectifiers?

Single phase rectifiers are suitable to power loads of up to
only about 15 kW.
For higher power demands, three phase rectifiers are preferred
for the following reasons:
Higher dc voltage, better TUF, better input power factor, less
ripple content in the output current - therefore giving better load
performance and a smaller size of filter circuit parameters because
of the higher ripple frequency.

###### Asked in Technology

### What is the frequency of ripple component in the output inductor filter?

It depends on the rectifier.
For a half-wave, it's the same as the AC mains: i.e. 60 Hz mains
gives 60 Hz ripple.
For a full-wave or a bridge, it's twice the AC mains: 60 Hz
mains gives 120 Hz ripple.
Three-phase systems are more complicated, so you would need to
check in an electrical engineering book.

###### Asked in Electronics Engineering, Electrical Engineering

### How many uf capacitor for using 6V 100amp rectifier?

To determine the required capacitance for a 6 volt 100 amp
rectifier, you would need to know the ripple voltage that the
circuit would tolerate. You would also need to know the ripple
frequency. More specifically, you would need to know the time from
one peak value to the intersection of the capacitor's voltage decay
curve and the next turn on point for the rectifier.
Let's say that the tolerated ripple voltage is 1 volt, and that
the ripple frequency is 120 hertz, as provided by a full wave
rectifier. This is a period of 8.3 millseconds. The actual time
from ripple peak to ripple trough is actually slightly less than
8.3 millseconds, but that is a function of ripple slope, as
somewhat complex calculation, so lets use 8.3 millseconds, which
will be conservative.
1 volt in 8.3 millseconds is 120 volts per second. Plug that in
to the equation for a capacitor ...
dv/dt = i/c
..., along with the current of 100 ampere, solve for c and you
get ...
dv/dt = i/c
120 = 100/c
c = 100/120
c = 0.83 farads
Now, 8.3 farads is a very large capacitor. Lets improve the
situation with a three phase rectifier. In that case, the ripple
frequency is 360 hertz, or 2.8 milliseconds, requiring a 0.28 farad
capacitor, still a large value, but better than 0.83 farads.

###### Asked in Home Electricity, Electronics Engineering, Electrical Engineering

### What is an unregulated full wave DC supply circuit?

An unregulated full wave DC supply circuit is a full wave
rectifier followed by a capacitor or capacitor/inductor filter, but
there is no regulator following it.
The full wave rectifier is either two diodes running from a
center tapped transformer winding (or some kind of split phase
power such as 120/240), or it is four diodes in bridge
configuration running from a normal (non-tapped) transformer
winding (or some kind of single phase power).
The no-load output voltage will be the peak rectification
voltage. The loaded output voltage will have ripple, extending from
the peak rectification voltage down to the level provided by the
filter just prior to the rectifiers turning back on in the next AC
cycle. The ripple frequency will be twice the supply frequency,
i.e. 120 hz for a 60 hz supply.

###### Asked in Home Electricity, Electrical Engineering

### Why frequency is constant in a single phase transformer?

a transformer or inductor or capacitor does not change
frequency
frequency is controlled at the generating station with the speed
of the motor or turbine
the number of phases will not make a difference
an inductor or capacitor can shift phase up to 90 degrees
you can make 3 phase power from single phase power with
inductors capacitors and transformers