ripple voltage

13 examples (0.04 sec)
  • However, ripple voltage is also commonly expressed as the peak-to-peak value.
  • The output ripple voltage will decrease in line with the usually reduced load current.
  • If it were odd and ended on a clamping cell the ripple voltage would be very large.
  • When the ripple current is within the battery-manufacturer-recommended level, the ripple voltage will also be well within the recommended level.
  • Simple AC-powered battery chargers have much higher ripple current and ripple voltage than other kinds of battery supplies.
  • Another application is in DC power supplies where very low ripple voltage (under load) is of paramount importance, such as in class-A amplifiers.
  • The ripple voltage is very large in this situation; the peak-to-peak ripple voltage is equal to the peak ac voltage.
  • For the rms value of the ripple voltage, the calculation is more involved as the shape of the ripple waveform has a bearing on the result.
  • There is still an AC ripple voltage component at the power supply frequency for a half-wave rectifier, twice that for full-wave, where the voltage is not completely smoothed.
  • A more usual alternative to a filter, and essential if the DC load requires very low ripple voltage, is to follow the reservoir capacitor with an active voltage regulator circuit.
  • When this happens, the capacitors no longer adequately serve their purpose of filtering the direct current voltages on the motherboard, and a result of this failure is an increase in the ripple voltage that the capacitor is supposed to filter out.
  • A disadvantage is that the ripple voltage can still be 50% of peak, and have total harmonic distortion (THD) of 35%, which is rather high.
  • Disadvantages include greater complexity, the generation of high-amplitude, high-frequency energy that the low-pass filter must block to avoid electromagnetic interference (EMI), a ripple voltage at the switching frequency and the harmonic frequencies thereof.