cupoftea
Advanced Member level 5
Hi,
We have a HV power supply for new innovative microwave oven prototype. We wish to measure ripple voltage on it…it is 30kV DC. We believe to measure ripple voltage we need to use a stack of lower voltage capacitors in series. We then look at the voltage of the lowest one. So ..we don’t want to have balancing resistors across all the caps, as this will give an RC time constant, and will filter out the ripple voltage….so how do we do this? We are expecting the ripple frequency to be around 25kHz, as this is the switching frequency of the HV SMPS.
We have a HV power supply for new innovative microwave oven prototype. We wish to measure ripple voltage on it…it is 30kV DC. We believe to measure ripple voltage we need to use a stack of lower voltage capacitors in series. We then look at the voltage of the lowest one. So ..we don’t want to have balancing resistors across all the caps, as this will give an RC time constant, and will filter out the ripple voltage….so how do we do this? We are expecting the ripple frequency to be around 25kHz, as this is the switching frequency of the HV SMPS.