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What should the maximum ripple that a new power supply should have?
Wiki User
∙ 7y ago
For a god quality PC power supply;
120mV on the 12V rail
50mV on the 5V and 3.3V rails
Wiki User
∙ 7y ago
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Difference between linear power supply and switch mode power supply?
a linear power supply the noise or ripple can be reduced to mv. However it is bulky heavy and inefficient A switching power supply it is easier to filter its output but the hi frequency noise and spikes are not that ease to get rid off. The weight and size can be greatly reduced and the efficiency greatly improved
Why for an ideal power supply the output voltage is independent of the load?
Obviously, you don't want the voltage to sag. For computer power supplies, you want the power to be even, pure, and clean without any ripple.
How is the power supply of a computer measured?
Power supplies are rated at the maximum wattage they can put out. Of course, a computers requirements vary depending on what the computer is doing, so a computer power supply should be of the same, or greater, wattage requirement of the computer when under it's greatest load.
The fan in a 250-watt power supply is malfunctioning. what action should you take?
Remove and replace the power supply.
What is the first step you should take when testing a power supply?
You first have to know the type of power supply your are testing. Then you could test whether the power supply is receiving anything from its source. Next check if it is giving any output.
What is the value of ripple in the ideal dc power supply?
In an ideal DC power supply, there is no ripple.
Unit of ripple factor?
Ripple, in DC power supplies, is technically unitless. Ripple voltage is specified in Volts/Volt, or a percentage. For example, a 12VDC power supply with 120mV (pk-pk) of ripple voltage is (0.12/12) = 1% ripple voltage.
What cause excessive ripple voltage from a power supply.?
I think the cause of ripple voltage would be from a bad ground or capacitve voltage.
What is the maximum power output of a class 2 power supply?
The maximum power of a class 2 power can be between 40-50v. You should always make sure you are aware what is the maximum output for your electronics.
How do you calculate the capacitance value of filter capacitor for full-wave bridge 12VDC power supply?
THe Filter capacitor value depnds on the maximum current I of the Power supply , Switching frequency and the permissible ripple C= (I * (1/2f ))/ ( V * %Ripple) - for a full wave rectifier C= (I * (1/f ))/ ( V * %Ripple) - for a Half wave rectifier Where C= Capcitance in Farads I = Current in Amps f = Switching Frequency V = Nominal voltage in this case 12 V Reji J Thoppil
What is ripple voltage in 12 volt power supply?
A: Ripple is a residual voltage evident as voltage following the AC input frequency. The ripple magnitude is a function of not enough of both filtering capacitance or overloading the output. Increasing capacitance will reduce the ripple or reducing the loading
How is it possible your power supply is faulty multimeter test says acceptable?
A multimeter draws next to no current, so will not effectively test the power supply under load. The voltage on the meter is averaged out and so will not show ripple current, or spurious dips in the supply. You will need an oscilloscope to check for ripple current (poor smoothing) and the supply needs to be under a load.
The small amount of ac signal present on the output of a filtering network for a dc power supply is known as?
Ripple.
What size fuse should be used for 2 amp power supply?
If the 2 amps is the output amperage of the power supply, the maximum that should be drawn from the unit is 2 amps. The load amperage that is connected to the power supply should govern the amperage of the fuse used. There is not much range there, the fusing could go from .25 to 2 amps. If the input amperage is 2 amps then the input and output voltage of the power supply should be stated.
What is 660VA for stepdown transformer capacity?
the maximum power it will supply
How does a filter operates in DC power supply?
It removes the remaining AC ripple after the rectifier, using capacitors (to bypass it to ground) and/or inductors (to block it).
Difference between linear power supply and switch mode power supply?
a linear power supply the noise or ripple can be reduced to mv. However it is bulky heavy and inefficient A switching power supply it is easier to filter its output but the hi frequency noise and spikes are not that ease to get rid off. The weight and size can be greatly reduced and the efficiency greatly improved
