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For a god quality PC power supply;

120mV on the 12V rail

50mV on the 5V and 3.3V rails

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8y ago

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Related Questions

What is the value of ripple in the ideal dc power supply?

In an ideal DC power supply, there is no ripple.


Where do you set meter when checking for ripple?

When checking for ripple on a power supply, you should set the meter to the AC voltage setting. Connect the meter probes across the output terminals of the power supply while it is under load, if possible. This allows you to measure any AC voltage fluctuations (ripple) superimposed on the DC output. Ensure that the range is appropriate for the expected ripple voltage level.


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


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.


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


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.


The small amount of ac signal present on the output of a filtering network for a dc power supply is known as?

Ripple.


How capacitor helps to improve the ripple factor?

A capacitor helps improve the ripple factor in power supply circuits by smoothing out the fluctuations in voltage that occur after rectification. When connected in parallel with the load, the capacitor charges during the peaks of the rectified voltage and discharges during the troughs, effectively reducing the voltage ripple. This results in a more stable DC output, which is particularly important for sensitive electronic devices. By minimizing the ripple, the capacitor enhances the overall performance and reliability of the power supply.


What is 660VA for stepdown transformer capacity?

the maximum power it will supply