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Why the output wave shape of the rectifier is disorted at high frequency supply?
Mizansohag
A: A rectifier is simply a diode or is it? At hi frequency the storage time or the disconnect time becomes significant that is why it looks distorted to the scope
Wiki User
∙ 13y ago
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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.
4 What is the difference between a transformer and a rectifier Which are found in a PC power supply?
A rectifier is a device that converts alternating current to direct current. A transformer is a device that changes the ratio fo current to voltage. A rectifier is found in a PC power supply.
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.
What is the peak inverse voltage rating of diode in bridge rectifier?
2x the peak supply voltage!
Why use half wave rectification and what are its advantages over full wave rectification?
A full-wave rectifier will provide an output through both the positive and negative halves of the AC sine wave. The half-wave rectifier will only provide an output for half the cycle. The filtered outputs of both rectifiers can be "smoothed" well, but the higher the load on the half-wave rectifier, the more the output voltage will vary across a cycle of input power. This results in higher ripple and makes regulation a bit more difficult. The full-wave rectifier will provide an output through both the positive and negative halves of the sine wave. It effectively "inverts" the negative half of the cycle and provides two "pulses" of power per cycle as opposed to one pulse per cycle for the half-wave rectifier. The full-wave rectifier might use a pair of diodes and a center tapped transformer, or might use four diodes in a full wave bridge configuration and a transformer with no center tap.
If vm is maximum peak voltage of rectifier outputthis rectifier output is connected to the capacitor filterwhat will be the approximate dc output voltage to the capacitor filter?
It should be the rms value of your supply.
Can you use a rectifier as a inverter if you place your ac supply were there should be an ac output?
You probably mean "... where there should be a DC output ?",and the answer is "No. They don't work in reverse.".
How do rectifiers and transformers work in a PC power supply?
There is no transformer used in PC power supply. There is rectifier used to rectify or convert AC input voltage into DC output voltage.Transformer based rectifier produces some spikes at the output DC voltage, hencethey uses SMPS (Switch Mode Power Supply) to avoid spikes to the output DC voltage and get a smooth DC voltage.
What is the type of transformer used to step down 230v ac to 48vdc?
A transformer alone cannot accomplish this. Transformers do not output DC directly, only AC. For DC output, additional components (rectifier, filter capacitor) are necessary. This would be properly called a DC power supply rather than just a transformer. To specify the proper power supply, you need at a minimum the input voltage (AC), the input frequency, the output voltage (DC), and the output current.
How do you determine the size of acapacitor in a rectifier circuit?
ANSWER In rectifiers for power supplies, the capacitor size is determined by the allowable ripple on the output. This can be determined by the rate at which the capacitor is drained. Specifically, this rate is the current drawn from the capacitor. Assume a half wave rectifier made from four diodes. For part of the cycle, the output current is supplied by the rectifier diode. This is also when the capacitor is charged. While the rectifier is not supplying current -- when the input waveform has dropped below the output voltage -- the capacitor must supply the current. Then, as the input waveform rises above the capacitor voltage, the rectifier supplies the current to charge the capacitor and the output circuit.
Where do you use a full wave rectifier?
Right: Example out of a transformer AC to DCAnother Answer:Anywhere there is AC and DC is required. A full wave rectifier is a circuit that produces a DC pulse using both halves of an AC sine wave - full wave rectifier.
Why we don't get negative half cycle in rectifier outpus?
We don't get negative half cycles at a rectifier's output only in a positive supply.If the supply is for a negative voltage, then there will be no positive half cycles at the output.Read a bit more about rectification.We don't get negative half cycle in rectifier outputs because the negative part of the supply only shows up across the diode when it is in the reverse bias and blocked (acting like an open switch) there by making the output voltage zero at that instant.
Why three-phase rectifier is preferred upon single-phase rectifier?
The choice of single or three phase depends on the available supply. But a three-phase full wave rectifier provides 6 pulses of DC per cycle, while a single-phase full-wave rectifier provides only two. That makes the output DC easier to smooth.
What pins go to power load and ground on a bridge rectifier for building a DC power supply?
The two pins with the ~ symbol are for the AC input and the + and - are for the pulsing DC output
What are the Advantages and disadvantages of half wave rectifier and full wave rectifier in terms of signals?
Advantages: Simple circuit and low cost.(ii)Disadvantages:1. The output current in the load contains, in addition to dc component, ac components of basic frequency equal to that of the input voltage frequency. Ripple factor is high and an elaborate filtering is, therefore, required to give steady dc output.(iii)2.The power output and, therefore, rectification efficiency is quite low. This is due to the fact that power is delivered only half the time.(iv)3.Transformer utilization factor is low.(v)4.DC saturation of transformer core resulting in magnetizing current and hysteresis losses and generation of harmonics.The type of supply available from a half-wave rectifier is not satisfactory for general power supply.This type of supply can be satisfactory for some particular purposes such as battery charging.
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.
What is the difference between rectifier and inverter type welding machine?
A welding rectifier is a m/c which converts A.C. supply to D.C.supply. Rectifiers are used for heavy welding work. An invertor is a welding m/c which converts A.C. supply to D.C.supply and then again converts D.C. to A.C. The wt. of invertor welding m/c is less than a welding transformer.
